11,379 results match your criteria Planta[Journal]


Mining the natural genetic variation in Arabidopsis thaliana for adaptation to sequential abiotic and biotic stresses.

Planta 2018 Dec 14. Epub 2018 Dec 14.

Plant-Microbe Interactions, Department of Biology, Science4Life, Utrecht University, PO Box 80056, 3508 TB, Utrecht, The Netherlands.

Main Conclusion: In this genome-wide association study, we obtained novel insights into the genetic basis of the effect of herbivory or drought stress on the level of resistance against the fungus Botrytis cinerea. In nature, plants function in complex environments where they encounter different biotic and abiotic stresses individually, sequentially or simultaneously. The adaptive response to a single stress does not always reflect how plants respond to such a stress in combination with other stresses. Read More

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December 2018

A lavender ABC transporter confers resistance to monoterpene toxicity in yeast.

Planta 2018 Dec 8. Epub 2018 Dec 8.

Department of Biology, University of British Columbia, Kelowna, BC, V1V 1V7, Canada.

Main Conclusion: Functional expression of a multidrug resistance-type ABC transporter from Lavandula angustifolia improved yeast resistance to geraniol, a monoterpene constituent of lavender essential oil. Plant ATP-binding cassette (ABC) transporters are a large family of membrane proteins involved in active and selective transport of structurally diverse compounds. In this study, we functionally evaluated LaABCB1, a multidrug resistance (MDR)-type ABC transporter strongly expressed in the secretory cells of lavender glandular trichomes, where monoterpene essential oil constituents are synthesized and secreted. Read More

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December 2018
1 Read

Papillae formation on Arabidopsis leaf trichomes requires the function of Mediator tail subunits 2, 14, 15a, 16, and 25.

Planta 2018 Dec 7. Epub 2018 Dec 7.

School of Biological Sciences, Illinois State University, Normal, IL, 61790, USA.

Main Conclusion: Arabidopsis Mediator subunits 2, 14, 15a, 16, and 25 are required for papillae development on the trichome cell wall surface. Arabidopsis leaf hairs exhibit raised protrusions, termed papillae, on their cell wall surfaces. Here, we show that the glassy hair mutant, glh2, exhibits trichomes with an approximate 11-fold decrease in papillae density on their surfaces in comparison to wild type. Read More

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December 2018

Indole-3-acetylaspartate and indole-3-acetylglutamate, the IAA-amide conjugates in the diploid strawberry achene, are hydrolyzed in growing seedlings.

Planta 2018 Dec 8. Epub 2018 Dec 8.

USDA/ARS Genetic Improvement of Fruit and Vegetables Laboratory, 10300 Baltimore Avenue, Beltsville, MD, 20705, USA.

Main Conclusion: Indole-3-acetylaspartate and indole-3-acetylglutamate are the stored auxin amino acid conjugates of the achene of the diploid strawberry and serve as sources of auxin during seedling growth. The edible part of the strawberry, a pseudocarp, has long been known to enlarge in response to auxin produced by the developing achenes, the botanical true fruit. Auxin homeostasis involves a complex interaction between biosynthesis, conjugate formation and hydrolysis, catabolism and transport. Read More

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December 2018
1 Read

Antioxidant capacity of Camellia japonica cultivars assessed by near- and mid-infrared spectroscopy.

Planta 2018 Dec 1. Epub 2018 Dec 1.

LAQV/REQUIMTE, Departamento de Ciências Químicas, Faculdade de Farmácia, Universidade do Porto, Rua Jorge Viterbo Ferreira, 228, 4050-313, Porto, Portugal.

Main Conclusion: Camellia japonica antioxidant capacity highly differs among its cultivars and could be successfully predicted by near- and mid-infrared spectroscopy. Camellia japonica is a Theaceae family species which are mainly used as an ornamental plant due to its colourful flowers presenting over than 32,000 recognized cultivars. However, this species have been somehow neglected due to the popular tea source, Camellia sinensis. Read More

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December 2018
1 Read

Plasma-membrane electrical responses to salt and osmotic gradients contradict radiotracer kinetics, and reveal Na-transport dynamics in rice (Oryza sativa L.).

Planta 2018 Nov 29. Epub 2018 Nov 29.

School of Agriculture and Food, Faculty of Veterinary and Agricultural Sciences, The University of Melbourne, Melbourne, VIC, 3010, Australia.

Main Conclusion: A systematic analysis of NaCl-dependent, plasma-membrane depolarization (∆∆Ψ) in rice roots calls into question the current leading model of rapid membrane cycling of Na under salt stress. To investigate the character and mechanisms of Na influx into roots, Na-dependent changes in plasma-membrane electrical potentials (∆∆Ψ) were measured in root cells of intact rice (Oryza sativa L., cv. Read More

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November 2018
4 Reads

Transcriptional and metabolic changes in the desiccation tolerant plant Craterostigma plantagineum during recurrent exposures to dehydration.

Planta 2018 Nov 29. Epub 2018 Nov 29.

Institute of Molecular Physiology and Biotechnology of Plants (IMBIO), University of Bonn, Kirschallee 1, 53115, Bonn, Germany.

Main Conclusion: Multiple dehydration/rehydration treatments improve the adaptation of Craterostigma plantagineum to desiccation by accumulating stress-inducible transcripts, proteins and metabolites. These molecules serve as stress imprints or memory and can lead to increased stress tolerance. It has been reported that repeated exposure to dehydration may generate stronger reactions during a subsequent dehydration treatment in plants. Read More

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November 2018
2 Reads

ATR-FTIR spectroscopy non-destructively detects damage-induced sour rot infection in whole tomato fruit.

Planta 2018 Nov 28. Epub 2018 Nov 28.

School of Pharmacy and Biomedical Sciences, University of Central Lancashire, Preston, UK.

Main Conclusion: ATR-FTIR spectroscopy with subsequent multivariate analysis non-destructively identifies plant-pathogen interactions during disease progression, both directly and indirectly, through alterations in the spectral fingerprint. Plant-environment interactions are essential to understanding crop biology, optimizing crop use, and minimizing loss to ensure food security. Damage-induced pathogen infection of delicate fruit crops such as tomato (Solanum lycopersicum) are therefore important processes related to crop biology and modern horticulture. Read More

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November 2018
5 Reads

Genetic modification of western wheatgrass (Pascopyrum smithii) for the phytoremediation of RDX and TNT.

Planta 2018 Nov 28. Epub 2018 Nov 28.

Department of Civil and Environmental Engineering, University of Washington, Box 355014, Seattle, WA, 98195-5014, USA.

Main Conclusion: Transgenic western wheatgrass degrades the explosive RDX and detoxifies TNT. Contamination, from the explosives, hexahydro-1, 3, 5-trinitro-1, 3, 5-triazine (RDX), and 2, 4, 6-trinitrotoluene (TNT), especially on live-fire training ranges, threatens environmental and human health. Phytoremediation is an approach that could be used to clean-up explosive pollution, but it is hindered by inherently low in planta RDX degradation rates, and the high phytotoxicity of TNT. Read More

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November 2018

Progressive programmed cell death inwards across the anther wall in male sterile flowers of the gynodioecious plant Plantago lanceolata.

Planta 2018 Nov 27. Epub 2018 Nov 27.

Department of Biology, Maynooth University, National University of Ireland Maynooth, Maynooth, Co. Kildare, Ireland.

Main Conclusion: A cell death signal is perceived and responded to by epidermal cells first before being conveyed inwards across the anther wall in male sterile Plantago lanceolata flowers. In gynodioecious plants, floral phenotype is determined by an interplay between cytoplasmic male sterility (CMS)-promoting factors and fertility-restoring genes segregating in the nuclear background. Plantago lanceolata exhibits at least four different sterilizing cytoplasms. Read More

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November 2018
1 Read

Overexpression of geraniol synthase induces heat stress susceptibility in Nicotiana tabacum.

Planta 2018 Nov 26. Epub 2018 Nov 26.

Department of Biological Science and Technology, Faculty of Industrial Science and Technology, Tokyo University of Science, 6-3-1 Niijuku, Katsushika-ku, Tokyo, 125-8585, Japan.

Main Conclusion: Transgenic tobacco plants overexpressing the monoterpene alcohol geraniol synthase exhibit hypersensitivity to thermal stress, possibly due to suppressed sugar metabolism and transcriptional regulation of genes involved in thermal stress tolerance. Monoterpene alcohols function in plant survival strategies, but they may cause self-toxicity to plants due to their hydrophobic and highly reactive properties. To explore the role of these compounds in plant stress responses, we assessed transgenic tobacco plants overexpressing the monoterpene alcohol geraniol synthase (GES plants). Read More

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November 2018
4 Reads

Engineering modular diterpene biosynthetic pathways in Physcomitrella patens.

Planta 2018 Nov 23. Epub 2018 Nov 23.

Biochemistry and Molecular Biology, Michigan State University, East Lansing, MI, 48824, USA.

Main Conclusion: Modular assembly and heterologous expression in the moss Physcomitrella patens of pairs of diterpene synthases results in accumulation of modern land plant diterpenoids. Physcomitrella patens is a representative of the ancient bryophyte plant lineage with a genome size of 511 Mb, dominant haploid life cycle and limited chemical and metabolic complexity. For these plants, exceptional capacity for genome editing through homologous recombination is met with recently demonstrated in vivo assembly of multiple heterologous DNA fragments. Read More

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November 2018
3 Reads

A hypothesis about the origin of carotenoid lipid droplets in the green algae Dunaliella and Haematococcus.

Planta 2018 Nov 23. Epub 2018 Nov 23.

Department of Chemistry and Biochemistry, University of California, Los Angeles, CA, 90095-1569, USA.

Main Conclusion: Hypercarotenogenesis in green algae evolved by mutation of PSY that increased its transcription at high light, disintegration of the eyespot in Dunaliella and acquisition of the capacity to export carotenoids from chloroplasts in Haematococcus. Carotenoids (Car) are lipid-soluble pigments synthesized in plants, algae, bacteria and fungi. Car have strong antioxidative properties and as such are utilized to reduce the danger of different diseases in humans. Read More

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November 2018
3 Reads

Isoprenyl diphosphate synthases: the chain length determining step in terpene biosynthesis.

Planta 2018 Nov 22. Epub 2018 Nov 22.

Roy J. Carver Department of Biochemistry, Biophysics and Molecular Biology, Iowa State University, Ames, IA, 50011, USA.

Main Conclusion: This review summarizes the recent developments in the study of isoprenyl diphosphate synthases with an emphasis on analytical techniques, product length determination, and the physiological consequences of manipulating expression in planta. The highly diverse structures of all terpenes are synthesized from the five carbon precursors dimethylallyl diphosphate and a varying number of isopentenyl diphosphate units through 1'-4 alkylation reactions. These elongation reactions are catalyzed by isoprenyl diphosphate synthases (IDS). Read More

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November 2018
7 Reads

Terpenes and isoprenoids: a wealth of compounds for global use.

Authors:
Sarada D Tetali

Planta 2018 Nov 22. Epub 2018 Nov 22.

Department of Plant Sciences, School of Life Sciences, University of Hyderabad, C. R. Prof. CR Rao Rd., CUC, Gachibowli, Hyderabad, 500046, Telangana, India.

Main Conclusion: Role of terpenes and isoprenoids has been pivotal in the survival and evolution of higher plants in various ecoregions. These products find application in the pharmaceutical, flavor fragrance, and biofuel industries. Fitness of plants in a wide range of environmental conditions entailed (i) evolution of secondary metabolic pathways enabling utilization of photosynthate for the synthesis of a variety of biomolecules, thereby facilitating diverse eco-interactive functions, and (ii) evolution of structural features for the sequestration of such compounds away from the mainstream primary metabolism to prevent autotoxicity. Read More

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November 2018
6 Reads

From plant physiology to pharmacology: fusicoccin leaves the leaves.

Planta 2018 Nov 22. Epub 2018 Nov 22.

Department of Biology, University of Rome Tor Vergata, via della Ricerca Scientifica, 00133, Rome, Italy.

Main Conclusion: This review highlights 50 years of research on the fungal diterpene fusicoccin, during which the molecule went from a tool in plant physiology research to a pharmacological agent in treating animal diseases. Fusicoccin is a phytotoxic glycosylated diterpene produced by the fungus Phomopsis amygdali, a pathogen of almond and peach plants. Widespread interest in this molecule started when it was discovered that it is capable of causing stomate opening in all higher plants, thereby inducing wilting of leaves. Read More

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November 2018
6 Reads

Eukaryotic microalgae as hosts for light-driven heterologous isoprenoid production.

Authors:
Kyle J Lauersen

Planta 2018 Nov 22. Epub 2018 Nov 22.

Faculty of Biology, Center for Biotechnology (CeBiTec), Bielefeld University, Universitätsstrasse 27, 33615, Bielefeld, Germany.

Main Conclusions: Eukaryotic microalgae hold incredible metabolic potential for the sustainable production of heterologous isoprenoid products. Recent advances in algal engineering have enabled the demonstration of prominent examples of heterologous isoprenoid production. Isoprenoids, also known as terpenes or terpenoids, are the largest class of natural chemicals, with a vast diversity of structures and biological roles. Read More

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November 2018
4 Reads

Engineering cyanobacteria for production of terpenoids.

Planta 2018 Nov 21. Epub 2018 Nov 21.

Department of Energy, Environmental and Chemical Engineering, Washington University, St. Louis, MO, 63130, USA.

Main Conclusion: This review summarizes recent advances in cyanobacterial terpenoid production. The challenges and opportunities of improving terpenoid production by cyanobacteria are discussed. Terpenoids are a diverse group of natural products with a variety of commercial applications. Read More

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November 2018
3 Reads

Abiotic stress regulates expression of galactinol synthase genes post-transcriptionally through intron retention in rice.

Planta 2018 Nov 21. Epub 2018 Nov 21.

Division of Plant Biology, Bose Institute (Centenary Campus), Kolkata, West Bengal, 700054, India.

Main Conclusion: Expression of the Galactinol synthase genes in rice is regulated through post-transcriptional intron retention in response to abiotic stress and may be linked to Raffinose Family Oligosaccharide synthesis in osmotic perturbation. Galactinol synthase (GolS) is the first committed enzyme in raffinose family oligosaccharide (RFO) synthesis pathway and synthesizes galactinol from UDP-galactose and inositol. Expression of GolS genes has long been implicated in abiotic stress, especially drought and salinity. Read More

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November 2018
6 Reads

Natural variation of ZmHKT1 affects root morphology in maize at the seedling stage.

Planta 2018 Nov 20. Epub 2018 Nov 20.

Jiangsu Key Laboratory of Crop Genetics and Physiology/Key Laboratory of Plant Functional Genomics of the Ministry of Education/Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding/Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Agricultural College of Yangzhou University, Yangzhou, 225009, China.

Main Conclusion: Eight variants in ZmHKT1 promoter were significantly associated with root diameter, four haplotypes based on these significant variants were found, and Hap2 has the largest root diameter. Roots play an important role in uptake of water, nutrients and plant anchorage. Identification of gene and corresponding SNPs associated with root traits would enable develop maize lines with better root traits that might help to improve capacity for absorbing nutrients and water acquisition. Read More

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November 2018
3 Reads
3.263 Impact Factor

Russeting partially restores apple skin permeability to water vapour.

Planta 2018 Nov 17. Epub 2018 Nov 17.

Institute for Horticultural Production Systems, Leibniz-University Hannover, Herrenhäuser Straße 2, 30419, Hannover, Germany.

Main Conclusion: The higher water loss of russeted fruit results from the higher permeance of the periderm of the russeted skin as compared to that of the intact cuticle and epidermis. Apple fruit surfaces are often in-parallel composites, comprising areas of intact cuticle (atop a healthy epidermis) adjacent to areas covered by periderm (so-called russet). The occurrence of non-russeting and russeting genotypes makes this species an ideal model to study the barrier properties of its composite skin. Read More

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November 2018
3 Reads

Single-repeat R3 MYB transcription factors from Platanus acerifolia negatively regulate trichome formation in Arabidopsis.

Planta 2018 Nov 17. Epub 2018 Nov 17.

Key Laboratory of Horticultural Plant Biology, Ministry of Education, College of Horticulture and Forestry Sciences, Huazhong Agricultural University, Wuhan, 430070, People's Republic of China.

Main Conclusion: Four R3 MYB genes were cloned and identified from Platanus acerifolia and analysed according to endogenous gene expression profiles, protein-protein interaction patterns, phenotypic effects and related gene expression profiles in transgenic Arabidopsis, suggesting that London plane R3 MYB genes inhibit trichome formation in Arabidopsis. The CPC-like MYB transcription factors including CAPRICE (CPC), TRIPTYCHON (TRY), ENHANCER OF TRY AND CPC 1, 2 and 3 (ETC1, ETC2 and ETC3), TRICHOMELESS1 (TCL1) and TRICHOMELESS2(TCL2) play important roles in controlling trichome patterning in Arabidopsis. In this study, four sequences homologous with the Arabidopsis CPC family were identified from London plane and named PaTRY, PaCPC-like1, PaCPC-like2 and PaCPC-like3. Read More

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November 2018
1 Read

Correction to: Casein kinase 2 α and β subunits inversely modulate ABA signal output in Arabidopsis protoplasts.

Planta 2018 Nov 17. Epub 2018 Nov 17.

Biological Resources and Post-harvest Division, Japan International Research Center for Agricultural Sciences (JIRCAS), Tsukuba, Ibaraki, 305-8686, Japan.

The article Casein kinase 2 α and β subunits inversely modulate ABA signal output in Arabidopsis protoplasts, written by Yukari Nagatoshi, Miki Fujita, and Yasunari Fujita, was originally published electronically on the publisher's internet portal (currently SpringerLink) on 24 May 2018 without open access. With the author(s)' decision to opt for Open Choice the copyright of the article changed on 19 November 2018 to © The Author(s) 2018 and the article is forthwith distributed under the terms of the Creative Commons Attribution 4.0 International License ( http://creativecommons. Read More

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November 2018
4 Reads

Quantitative characteristics of pubescence in wheat (Triticum aestivum L.) are associated with photosynthetic parameters under conditions of normal and limited water supply.

Planta 2018 Nov 16. Epub 2018 Nov 16.

Institute of Cytology and Genetics SB RAS, Prospekt Lavrentieva 10, Novosibirsk, 630090, Russia.

Main Conclusion: Density and length of leaf pubescence are important factors of diversity in the response to water deficiency among wheat genotypes. Many studies evidence an important protective value of leaf hairiness in plants, especially under the conditions of drought, thermal loads and increased solar radiation. However, the physiological and adaptive roles of such traits in cereals, including cultivated plants, have not been sufficiently studied to date. Read More

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November 2018

Host responses and impact on the boxwood blight pathogen, Calonectria pseudonaviculata.

Planta 2018 Nov 13. Epub 2018 Nov 13.

Hampton Roads Agricultural Research and Extension Centre, Virginia Tech, Virginia Beach, VA, 23455, USA.

Main Conclusion: Boxwood leaves are more susceptible to Calonectria pseudonaviculata (Cps) and better suited for Cps reproduction than those of pachysandra and sweet box. Passages through a non-boxwood host may alter Cps ability to sporulate. Calonectria pseudonaviculata (Cps) infects boxwood and its two common companion plants-pachysandra and sweet box. Read More

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November 2018
2 Reads

Genome-wide identification, characterization, and expression analysis of the expansin gene family in Chinese jujube (Ziziphus jujuba Mill.).

Planta 2018 Nov 8. Epub 2018 Nov 8.

National Engineering Laboratory for Tree Breeding, College of Biological Sciences and Technology, Beijing Forestry University, Beijing, 100083, China.

Main conclusion 30 expansin genes were identified in the jujube genome. Phylogenetic analysis classified expansins into 17 subgroups. Closely related expansins share a conserved gene structure. Read More

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November 2018
1 Read

Efficacy of biological agents and compost on growth and resistance of tomatoes to late blight.

Planta 2018 Nov 7. Epub 2018 Nov 7.

Institute of Population genetics, Heinrich Heine University Duesseldorf, Universitaetsstr. 1, 26.03.00.25, 40225, Düsseldorf, Germany.

Main Conclusion: This study identified biocontrol measures for improving plant quality and resistance under biotic stress caused by the most devastating pathogen in tomato production. The management of plant diseases are dependent on a variety of factors. Two important variables are the soil quality and its bacterial/fungal community. Read More

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November 2018
3 Reads

Fitness costs associated with multiple resistance to dicamba and atrazine in Chenopodium album.

Planta 2018 Nov 7. Epub 2018 Nov 7.

School of Agriculture and Environment (PN 433), Massey University, Private Bag 11-222, Palmerston North, 4442, New Zealand.

Main Conclusion: Detrimental pleiotropic effects of resistance mutation(s) were observed for multiple-resistant phenotypes (resistant to both atrazine and dicamba). The multiple-resistant phenotypes had lower growth rates and less capacity for vegetative growth compared to the phenotypes only resistant to atrazine. The fitness costs that are conferred by herbicide resistance alleles can affect the rate of herbicide resistance evolution within populations. Read More

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November 2018
2 Reads

Comparative transcriptome analysis to elucidate the enhanced thermotolerance of tea plants (Camellia sinensis) treated with exogenous calcium.

Planta 2018 Nov 3. Epub 2018 Nov 3.

Tea Research Institute, College of Horticulture, Nanjing Agricultural University, Weigang No. 1, Nanjing, 210095, People's Republic of China.

Main Conclusion: The molecular mechanisms regulating calcium-mediated thermotolerance in Camellia sinensis were revealed by RNA-Sequencing. Heat stress is one of the most remarkable abiotic factors limiting the growth and productivity of Camellia sinensis plants. Calcium helps regulate plant responses to various adverse environmental conditions, including heat stress. Read More

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November 2018
5 Reads

Regulation of compound leaf development in mungbean (Vigna radiata L.) by CUP-SHAPED COTYLEDON/NO APICAL MERISTEM (CUC/NAM) gene.

Planta 2018 Nov 2. Epub 2018 Nov 2.

Laboratory Center of Life Sciences, College of Life Sciences, Nanjing Agricultural University, Nanjing, China.

Main Conclusion: The results provide a significant verification of functional redundancy and diversity of CUC/NAM genes in legumes. The CUP-SHAPED COTYLEDON/NO APICAL MERISTEM (CUC/NAM) orthologs play key roles for plant organ boundary formation and organ development. Here, we performed a forward screen of the gamma irradiation mutagenesis population in mungbean and characterised a mutant, reduced rachis and fused leaflets (rrf1), which gave rise to the formation of compound leaves with reduced rachis and fused leaflets. Read More

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November 2018
11 Reads

Chloroplasts preferentially take up ferric-citrate over iron-nicotianamine complexes in Brassica napus.

Planta 2018 Oct 31. Epub 2018 Oct 31.

Department of Plant Physiology and Molecular Plant Biology, Institute of Biology, ELTE Eötvös Loránd University, Pázmány Péter sétány 1/C, 1117, Budapest, Hungary.

Main Conclusion: Fe uptake machinery of chloroplasts prefers to utilise Fe(III)-citrate over Fe-nicotianamine complexes. Iron uptake in chloroplasts is a process of prime importance. Although a few members of their iron transport machinery were identified, the substrate preference of the system is still unknown. Read More

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October 2018

The elicitin β-cryptogein's activity in tomato is mediated by jasmonic acid and ethylene signalling pathways independently of elicitin-sterol interactions.

Planta 2018 Oct 29. Epub 2018 Oct 29.

Department of Biochemistry, Faculty of Science, Masaryk University, Kotlářská 2, 61137, Brno, Czech Republic.

Main Conclusion: The level of resistance induced in different tomato genotypes after β-CRY treatment correlated with the upregulation of defence genes, but not sterol binding and involved ethylene and jasmonic acid signalling. Elicitins, a family of small proteins secreted by Phytophthora and Pythium spp., are the most well-known microbe-associated molecular patterns of oomycetes, a lineage of fungus-like organisms that include many economically significant crop pathogens. Read More

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October 2018
3 Reads

Why chartreuse? The pigment vulpinic acid screens blue light in the lichen Letharia vulpina.

Planta 2018 Oct 29. Epub 2018 Oct 29.

Faculty of Environmental Sciences and Natural Resource Management, Norwegian University of Life Sciences, P.O. Box 5003, 1432, Ås, Norway.

Main Conclusion: Chlorophyll fluorescence, infrared gas exchange and photoinhibition data consistently show that vulpinic acid in L. vulpina functions as a strong blue light screening compound. The cortical lichen compounds, parietin, atranorin, usnic acid and melanins are known to screen photosynthetically active radiation (PAR), thereby protecting the underlying photobionts. Read More

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October 2018
1 Read

Involvement of ethylene biosynthesis and perception during germination of dormant Avena fatua L. caryopses induced by KAR or GA.

Planta 2018 Oct 29. Epub 2018 Oct 29.

Department of Plant Physiology and Genetic Engineering, Faculty of Biology, University of Szczecin, Wąska 13, 71-415, Szczecin, Poland.

Main Conclusion: Germination of primary dormant wild oat caused by KAR or GA is associated with ACC accumulation and increased ethylene production shortly before radicle protrusion as a result of the non-transcriptional and transcriptional activation of ACS and ACO enzymes, respectively. Response to both compounds involves the modulation of ethylene sensitivity through ethylene receptor genes. Harvested Avena fatua caryopses are primary dormant and, therefore, germinated poorly at 20 °C. Read More

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October 2018
3 Reads

Characterization of genome-wide microRNAs and their roles in development and biotic stress in pear.

Planta 2018 Oct 27. Epub 2018 Oct 27.

Laboratory of Fruit Cell and Molecular Breeding, China Agricultural University, Beijing, 100193, China.

Main Conclusion: Using a genome-wide analysis of miRNAs in 'Yali' pear (Pyrus bretschneideri) via the next-generation high-throughput sequencing of small RNAs with a bioinformatics analysis, we found that pbr-miR156, pbr-miR164, pbr-miR399, and pbr-miR482 and their target genes function in viral defense in 'Duli' and 'Hongbaoshi'. pbr-miR160, pbr-miR168, pbr-miR171, and pbr-miR319 and their targets function in auxin signaling pathways in 'Zhongai 4' and 'Zhongai 5'. Successful fruit production in pear (Pyrus spp. Read More

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October 2018
6 Reads
3.263 Impact Factor

Physical location of tandem repeats in the wheat genome and application for chromosome identification.

Planta 2018 Oct 24. Epub 2018 Oct 24.

School of Life Science and Technology, University of Electronic Science and Technology of China, Chengdu, 610054, China.

Main Conclusion: A general distribution of tandem repeats (TRs) in the wheat genome was predicted and a new web page combined with fluorescence in situ hybridization experiments, and the newly developed Oligo probes will improve the resolution for wheat chromosome identification. Comprehensive sequence analysis of tandem repeats (TR) in the wheat reference genome permits discovery and application of TRs for chromosome identification. Genome-wide localization of TRs was identified in the reference sequences of Chinese Spring using Tandem Repeat Finder (TRF). Read More

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October 2018

Molecular cloning and functional analysis of a biphenyl phytoalexin-specific O-methyltransferase from apple cell suspension cultures.

Planta 2018 Oct 24. Epub 2018 Oct 24.

Plant Molecular Biology Group, Biotechnology Department, Indian Institute of Technology Roorkee, Roorkee, 247667, India.

Main Conclusion: This manuscript describes the cloning and functional characterization of a biphenyl phytoalexin biosynthetic gene, 3,5-dihydroxybiphenyl O-methyltransferase from elicitor-treated cell cultures of scab resistant apple cultivar 'Florina'. Apples belong to the subtribe Malinae of the Rosaceae family. Biphenyls and dibenzofurans are the specialized phytoalexins of Malinae, of which aucuparin is the most widely distributed biphenyl. Read More

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October 2018

Diversity and evolution of cytochromes P450 in stramenopiles.

Planta 2018 Oct 19. Epub 2018 Oct 19.

Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, 266071, China.

Main Conclusion: Comparative genomic analysis of cytochromes P450 revealed high diversification and dynamic changes in stramenopiles, associated with transcriptional responsiveness to various environmental stimuli. Comparative genomic and molecular evolution approaches were used to characterize cytochromes P450 (P450) diversity in stramenopiles. Phylogenetic analysis pointed to a high diversity of P450 in stramenopiles and identified three major clans. Read More

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October 2018
6 Reads

Correction to: Spatiotemporal activities of Douglas-fir BiP Pro1 promoter in transgenic potato.

Planta 2018 12;248(6):1581

Department of Biochemistry and Microbiology, Centre for Forest Biology, University of Victoria, Victoria, BC, V8W 3P6, Canada.

In Table 1, the unit of measure provided for GUS activity in unstressed leaves was not given correctly in the original publication. It should read. Read More

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December 2018
3.260 Impact Factor

Ploidy and hybridity effects on leaf size, cell size and related genes expression in triploids, diploids and their parents in Populus.

Planta 2018 Oct 16. Epub 2018 Oct 16.

Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, National Engineering Laboratory for Tree Breeding, Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants of Ministry of Education, Key Laboratory of Forest Trees and Ornamental Plants Biological Engineering of State Forestry Administration, College of Biological Sciences and Technology, Beijing Forestry University, Beijing, 100083, China.

Main Conclusion: Cell-size enlargement plays a pivotal role in increasing the leaf size of triploid poplar, and polyploidization could change leaf shape. ABP1 was highly expressed in triploid plants and positively related to cell size. In the plant kingdom, the leaf is the most important energy production organ, and polyploidy often exhibits a "Gigas" effect on leaf size, which benefits agriculture and forestry. Read More

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October 2018
2 Reads

Genotypic and heat stress effects on leaf cuticles of field pea using ATR-FTIR spectroscopy.

Planta 2018 Oct 13. Epub 2018 Oct 13.

Department of Plant Sciences, University of Saskatchewan, 51 Campus Drive, Saskatoon, SK, S7N 5A8, Canada.

Main Conclusion: ATR-FTIR spectroscopy in combination with uni- and multivariate analysis was used to quantify the spectral-chemical composition of the leaf cuticle of pea, investigating the effects of variety and heat stress. Field pea (Pisum sativum L.) is sensitive to heat stress and our goal was to improve canopy cooling and flower retention by investigating the protective role of lipid-related compounds in leaf cuticle, and to use results in the future to identify heat resistant genotypes. Read More

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October 2018
1 Read

Genome-wide identification and functional analysis of the splicing component SYF2/NTC31/p29 across different plant species.

Planta 2018 Oct 13. Epub 2018 Oct 13.

State Key Laboratory of Crop Biology, College of Life Science, Shandong Agricultural University, Taian, Shandong, China.

Main Conclusion: This study systematically identifies plant SYF2/NTC31/p29 genes from 62 plant species by a combinatory bioinformatics approach, revealing the importance of this gene family in phylogenetics, duplication, transcriptional, and post-transcriptional regulation. Alternative splicing is a post-transcriptional regulatory mechanism, which is critical for plant development and stress responses. The entire process is strictly attenuated by a complex of splicing-related proteins, designated splicing factors. Read More

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October 2018
1 Read

Genetic, evolutionary and phylogenetic aspects of the plastome of annatto (Bixa orellana L.), the Amazonian commercial species of natural dyes.

Planta 2018 Oct 11. Epub 2018 Oct 11.

Laboratório de Fisiologia Molecular de Plantas, Departamento de Biologia Vegetal, Universidade Federal de Viçosa, Viçosa, MG, Brazil.

Main Conclusion: The plastome of B. orellana reveals specific evolutionary features, unique RNA editing sites, molecular markers and the position of Bixaceae within Malvales. Annatto (Bixa orellana L. Read More

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October 2018
4 Reads

Evolutionary and functional analyses of the 2-oxoglutarate-dependent dioxygenase genes involved in the flavonoid biosynthesis pathway in tobacco.

Planta 2018 Oct 6. Epub 2018 Oct 6.

China Tobacco Gene Research Center, Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou, 450001, China.

Main Conclusion: This study illustrates the differences in the gene structure of 2-oxoglutarate-dependent oxygenase involved in flavonoid biosynthesis (2ODD-IFB), and their potential roles in regulating tobacco flavonoid biosynthesis and plant growth. Flavonol synthase (FLS), anthocyanidin synthase (ANS), and flavanone 3β-hydroxylase belong to the 2-oxoglutarate-dependent (2ODD) oxygenase family, and each performs crucial functions in the biosynthesis of flavonoids. We identified two NtFLS genes, two NtANS genes, and four NtF3H genes from Nicotiana tabacum genome, as well as their homologous genes in the N. Read More

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October 2018
12 Reads
3.263 Impact Factor

Characterization of Maf1 in Arabidopsis: function under stress conditions and regulation by the TOR signaling pathway.

Planta 2018 Oct 6. Epub 2018 Oct 6.

Department of Systems Biology, Yonsei University, Seoul, 03722, Korea.

Main Conclusion: Maf1 repressor activity is critical for plant survival during environmental stresses, and is regulated by its phosphorylation/dephosphorylation through the activity of TOR and PP4/PP2A phosphatases. Maf1 is a global repressor of RNA polymerase III (Pol III), and is conserved in eukaryotes. Pol III synthesizes small RNAs, 5S rRNA, and tRNAs that are essential for protein translation and cell growth. Read More

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October 2018
1 Read

A review of the seed biology of Paeonia species (Paeoniaceae), with particular reference to dormancy and germination.

Planta 2018 Oct 1. Epub 2018 Oct 1.

Jiangsu Key Laboratory of Crop Genetics and Physiology, College of Horticulture and Plant Protection, Yangzhou University, Yangzhou, 225009, People's Republic of China.

Main Conclusion: Most Paeonia species have epicotyl dormancy. Germination of peony seeds requires warm stratification for embryo growth and radicle protrusion followed by cold stratification for epicotyl growth. The genus Paeonia (Paeoniaceae) includes many popular ornamentals, has colorful flowers and contains several Chinese medicinal species. Read More

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October 2018

Spatiotemporal activities of Douglas-fir BiP Pro1 promoter in transgenic potato.

Planta 2018 Dec 1;248(6):1569-1579. Epub 2018 Oct 1.

Department of Biochemistry and Microbiology, Centre for Forest Biology, University of Victoria, Victoria, BC, V8W 3P6, Canada.

Main Conclusion: The PmBiPPro1 promoter of the luminal binding protein (BiP) from Douglas-fir is fully functional in transgenic potato, responsive to wounding, and has high transcriptional activity in tubers. A predefined pattern and level of transgene expression targeted to specific tissues or organs and at a particular developmental stage is a pre-requisite for the successful development of plants with desired traits. Here, we evaluated the transcriptional activity of the PmBiPPro1 promoter of the luminal binding protein (BiP) from Douglas-fir, by expressing reporter β-D-glucuronidase (GUS) gene constructs containing three different PmBiPPro1 promoter versions (2258 bp, 1259 bp, and 278 bp) in transgenic potato. Read More

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December 2018
3.260 Impact Factor

Knockdown of PCBER1, a gene of neolignan biosynthesis, resulted in increased poplar growth.

Planta 2018 Sep 29. Epub 2018 Sep 29.

Thuenen Institute of Forest Genetics, Sieker Landstrasse 2, 22927, Grosshansdorf, Germany.

Main Conclusion: Poplar trees displayed an increased plant height due to the transgenic knockdown of PCBER1, a gene of lignan biosynthesis. The wood composition was slightly altered in both overexpression and knockdown lines. The gene PHENYLCOUMARAN BENZYLIC ETHER REDUCTASE1 (PCBER1) is well known as an important gene in the synthesis of lignans, a group of diverse phenylpropanoid derivatives. Read More

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September 2018
10 Reads

De novo sequencing of the Lavandula angustifolia genome reveals highly duplicated and optimized features for essential oil production.

Planta 2018 Sep 29. Epub 2018 Sep 29.

Department of Biology, University of British Columbia, Kelowna, BC, Canada.

Main Conclusion: The first draft genome for a member of the genus Lavandula is described. This 870 Mbp genome assembly is composed of over 688 Mbp of non-gap sequences comprising 62,141 protein-coding genes. Lavenders (Lavandula: Lamiaceae) are economically important plants widely grown around the world for their essential oils (EOs), which contribute to the cosmetic, personal hygiene, and pharmaceutical industries. Read More

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September 2018
16 Reads

Epigenetic control of UV-B-induced flavonoid accumulation in Artemisia annua L.

Planta 2018 Sep 28. Epub 2018 Sep 28.

Department of Botany, Institute of Science, Banaras Hindu University, Varanasi, India.

Main Conclusion: UV-B-induced flavonoid biosynthesis is epigenetically regulated by site-specific demethylation of AaMYB1, AaMYC, and AaWRKY TF-binding sites in AaPAL1 promoter-causing overexpression of AaPAL gene in Artemisia annua. The present study was undertaken to understand the epigenetic regulation of flavonoid biosynthesis under the influence of ultraviolet-B radiation using Artemisia annua L. as an experimental model. Read More

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September 2018
5 Reads
3.260 Impact Factor