30,999 results match your criteria Plant physiology[Journal]


Regeneration of Solanum tuberosum plants from protoplasts induces widespread genome instability.

Plant Physiol 2019 Feb 21. Epub 2019 Feb 21.

University of California at Davis CITY: Davis STATE: California POSTAL_CODE: 95616 United States Of America [US]

Non-transgenic genome editing in regenerable protoplasts, plant cells free of their cell wall, could revolutionize crop improvement because it reduces regulatory and technical complexity. However, plant tissue culture is known to engender frequent unwanted variation, termed somaclonal variation. To evaluate the contribution of large-scale genome instability to this phenomenon, we analyzed potatoes (Solanum tuberosum) regenerated from either protoplasts or stem explants for copy number changes by comparison of Illumina read depth. Read More

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http://dx.doi.org/10.1104/pp.18.00906DOI Listing
February 2019

Nitrate modulates the differentiation of root distal stem cells.

Plant Physiol 2019 Feb 20. Epub 2019 Feb 20.

State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University CITY: Beijing POSTAL_CODE: 100193 China [CN]

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http://dx.doi.org/10.1104/pp.18.01305DOI Listing
February 2019

Deficiency in the Phosphorylated Pathway of Serine Biosynthesis perturbs sulfur assimilation.

Plant Physiol 2019 Feb 20. Epub 2019 Feb 20.

Universitat de Valencia CITY: Burjassot POSTAL_CODE: 46100 Spain [ES]

Although the plant Phosphorylated Pathway of L-Serine Biosynthesis (PPSB) is essential for embryo and pollen development, and for root growth, its metabolic implications have not been fully investigated. A transcriptomics analysis of Arabidopsis (Arabidopsis thaliana) PPSB-deficient mutants at night, when PPSB activity is thought to be more important, suggested interaction with the sulfate assimilation process. As sulfate assimilation occurs mainly in the light, we also investigated it in PPSB-deficient lines in the day. Read More

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http://dx.doi.org/10.1104/pp.18.01549DOI Listing
February 2019

Independent Regulation of Symbiotic Nodulation by the SUNN Negative and CRA2 Positive Systemic Pathways.

Plant Physiol 2019 Feb 19. Epub 2019 Feb 19.

CNRS CITY: Gif-sur-Yvette France [FR]

Plant systemic signaling pathways allow the integration and coordination of shoot and root organ metabolism and development at the whole-plant level depending on nutrient availability. In legumes, two systemic pathways have been reported in the Medicago truncatula model to regulate root nitrogen-fixing symbiotic nodulation. Both pathways involve leucine-rich repeat receptor-like kinases (LRR-RLKs) acting in shoots and proposed to perceive signaling peptides produced in roots depending on soil nutrient availability. Read More

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http://dx.doi.org/10.1104/pp.18.01588DOI Listing
February 2019

Proteolytic processing of SERK3/BAK1 regulates plant immunity, development and cell death.

Plant Physiol 2019 Feb 19. Epub 2019 Feb 19.

Texas A&M University CITY: college station STATE: Texas POSTAL_CODE: 77843 United States Of America [US]

Plants have evolved many receptor-like kinases (RLKs) to sense extrinsic and intrinsic cues. The signaling pathways mediated by multiple leucine-rich repeat (LRR) RLK (LRR-RLK) receptors require ligand-induced receptor-coreceptor heterodimerization and transphosphorylation with BAK1/SERK family LRR-RLKs. Here we reveal an additional layer of regulation of BAK1 via a Ca2+-dependent proteolytic cleavage process that is conserved in Arabidopsis thaliana, Nicotiana benthamiana and Saccharomyces cerevisiae . Read More

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http://dx.doi.org/10.1104/pp.18.01503DOI Listing
February 2019

The R2R3-MYB transcription factor MYB49 regulates cadmium accumulation.

Plant Physiol 2019 Feb 19. Epub 2019 Feb 19.

Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences CITY: kunming STATE: yunnan POSTAL_CODE: 650223 China [CN]

Abscisic acid (ABA) reduces accumulation of potentially toxic cadmium (Cd) in plants. How the ABA signal is transmitted to modulate Cd uptake remains largely unclear. Here, we report that the basic region/leucine zipper transcription factor ABSCISIC ACID-INSENSITIVE5 (ABI5), a central ABA signaling molecule, is involved in ABA-repressed Cd accumulation in plants by physically interacting with a previously uncharacterized R2R3-MYB transcription factor MYB49. Read More

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http://dx.doi.org/10.1104/pp.18.01380DOI Listing
February 2019

AVR2 targets BSL family members, which act as susceptibility factors to suppress host immunity.

Plant Physiol 2019 Feb 19. Epub 2019 Feb 19.

University of Dundee CITY: Dundee POSTAL_CODE: DD2 5DA United Kingdom [GB]

To be successful plant pathogens, microbes use "effector proteins" to manipulate host functions to their benefit. Identifying host targets of effector proteins and characterizing their role in the infection process allow us to better understand plant-pathogen interactions and the plant immune system. Yeast two-hybrid and coimmunoprecipitation were used to demonstrate that the Phytophthora infestans effector PiAVR2 interacts with all three BSU1-like (BSL) family members from potato (Solanum tuberosum). Read More

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http://dx.doi.org/10.1104/pp.18.01143DOI Listing
February 2019

FT modulates genome-wide DNA-binding of the bZIP transcription factor FD.

Plant Physiol 2019 Feb 15. Epub 2019 Feb 15.

Umeå Plant Science Centre, Department of Plant Physiology, Umeå University CITY: Umeå Sweden [SE]

The transition to flowering is a crucial step in the plant life cycle that is controlled by multiple endogenous and environmental cues, including hormones, sugars, temperature, and photoperiod. Permissive photoperiod induces the expression of FLOWERING LOCUS T (FT) in the phloem companion cells (PCC) of leaves. The FT protein then acts as a florigen that is transported to the shoot apical meristem (SAM), where it physically interacts with the bZIP transcription factor FD and 14-3-3 proteins. Read More

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http://dx.doi.org/10.1104/pp.18.01505DOI Listing
February 2019

Mitochondrial Pyruvate Carriers Prevent Cadmium Toxicity by Sustaining the TCA Cycle and Glutathione Synthesis.

Plant Physiol 2019 Feb 15. Epub 2019 Feb 15.

Key Laboratory of Plant Cell Engineering and Germplasm Innovation, Ministry of Education; School of Life Science, Shandong University CITY: Qingdao STATE: Shandong Province POSTAL_CODE: 266237 China [CN]

Cadmium (Cd) is a major heavy metal pollutant and Cd toxicity is a serious cause of abiotic stress in the environment. Plants protect themselves against Cd stress through a variety of pathways. In a recent study, we found that mitochondrial pyruvate carriers (MPCs) are involved in Cd tolerance in Arabidopsis (Arabidopsis thaliana). Read More

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http://www.plantphysiol.org/lookup/doi/10.1104/pp.18.01610
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http://dx.doi.org/10.1104/pp.18.01610DOI Listing
February 2019
3 Reads
6.841 Impact Factor

ESA1 is involved in embryo sac abortion in interspecific hybrid progeny of rice.

Plant Physiol 2019 Feb 15. Epub 2019 Feb 15.

China Agricultural University CITY: Beijing STATE: Beijng China [CN]

The emergence of sterile individuals in the hybrid backcross progeny of wild and cultivated rice limits the use of wild rice alleles for improving cultivated rice, but the molecular mechanisms underlying this sterility remain unclear. Here, we identified the semi-sterile introgression line YIL42, derived from a cross between the indica rice variety Teqing (Oryza sativa L.) and Oryza rufipogon Griff. Read More

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http://www.plantphysiol.org/lookup/doi/10.1104/pp.18.01374
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http://dx.doi.org/10.1104/pp.18.01374DOI Listing
February 2019
4 Reads

A Family of NAI2-Interacting Proteins in the Biogenesis of the ER Body and Related Structures.

Plant Physiol 2019 Feb 15. Epub 2019 Feb 15.

Purdue University Department of Botany and Plant Pathology, Purdue University, 915 W. State Street CITY: West Lafayette POSTAL_CODE: 47907-2054 United States Of America [US]

Plants produce different types of endoplasmic reticulum (ER)-derived vesicles that accumulate and transport proteins, lipids, and metabolites. In the Brassicales, a distinct ER-derived structure called the ER body is found throughout the epidermis of cotyledons, hypocotyls, and roots. NAI2 is a key factor for ER body formation in Arabidopsis (Arabidopsis thaliana). Read More

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http://www.plantphysiol.org/lookup/doi/10.1104/pp.18.01500
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http://dx.doi.org/10.1104/pp.18.01500DOI Listing
February 2019
1 Read

Mesorhizobium huakuii HtpG interaction with nsLTP AsE246 is required for symbiotic nitrogen fixation.

Plant Physiol 2019 Feb 14. Epub 2019 Feb 14.

Huazhong Agricultural University CITY: Wuhan China [CN]

Plant non-specific lipid transfer proteins (nsLTPs) are involved in a number of biological processes including root nodule symbiosis. However, the role of nsLTPs in legume-rhizobium symbiosis remains poorly understood, and no rhizobia proteins that interact with nsLTPs have been reported to date. In this study, we used a bacteria two-hybrid system and identified the HtpG protein from Mesorhizobium huakuii that interacts with the nsLTP AsE246. Read More

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http://dx.doi.org/10.1104/pp.18.00336DOI Listing
February 2019

B-box containing proteins BBX30 and BBX31, acting downstream of HY5, negatively regulate photomorphogenesis in Arabidopsis.

Plant Physiol 2019 Feb 14. Epub 2019 Feb 14.

Peking University CITY: Beijing China [CN]

Light-mediated seedling development is coordinately controlled by a variety of key regulators. Here, we identified two B-box (BBX) containing proteins, BBX30 and BBX31, as repressors of photomorphogenesis. ELONGATED HYPOCOTYL 5 (HY5), a central regulator of light signaling, directly binds to the G-box cis-element present in the promoters of BBX30 and BBX31 and negatively controls their transcription levels in the light. Read More

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http://dx.doi.org/10.1104/pp.18.01244DOI Listing
February 2019

HDA9-PWR-HOS15 is a core histone deacetylase complex regulating transcription and development.

Plant Physiol 2019 Feb 14. Epub 2019 Feb 14.

University of Wisconsin-Madison CITY: Madison STATE: WI POSTAL_CODE: 53715 United States Of America [US]

Histone deacetylases (HDACs) remove acetyl groups from histone proteins and play important roles in many genomic processes. How HDACs perform specialized molecular and biological functions in plants is poorly understood. Here, we identify HIGH EXPRESSION OF OSMOTICALLY RESPONSIVE GENES 15 (HOS15) as a core member of the Arabidopsis HISTONE DEACETYLASE9-POWERDRESS (HDA9-PWR) complex. Read More

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http://dx.doi.org/10.1104/pp.18.01156DOI Listing
February 2019

An Arabidopsis TIR-lectin two-domain protein confers defence properties against Tetranychus urticae.

Plant Physiol 2019 Feb 14. Epub 2019 Feb 14.

Centro de Biotecnologia y Genomica de Plantas CITY: Pozuelo de Alarcon STATE: Madrid POSTAL_CODE: 28223 Spain [ES]

Plant immunity depends on fast and specific transcriptional reprogramming triggered by the perception of biotic stresses. Numerous studies have been conducted to better understand the response of plants to the generalist herbivore two-spider mite (Tetranychus urticae). However, how plants perceive mites and how this perception is translated into changes in gene expression is largely unknown. Read More

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http://dx.doi.org/10.1104/pp.18.00951DOI Listing
February 2019

Control of cognate sense mRNA translation by cis-natural antisense RNAs.

Plant Physiol 2019 Feb 13. Epub 2019 Feb 13.

University of Lausanne CITY: Lausanne POSTAL_CODE: CH-1015 Switzerland [CH]

Cis-Natural Antisense Transcripts (cis-NATs), which overlap protein coding genes and are transcribed from the opposite DNA strand, constitute an important group of non-coding RNAs. Whereas several examples of cis-NATs regulating the expression of their cognate sense gene are known, most cis-NATs function by altering the steady-state level or structure of mRNA via changes in transcription, mRNA stability or splicing, and very few cases involve the regulation of sense mRNA translation. This study was designed to systematically search for cis-NATs influencing cognate sense mRNA translation in Arabidopsis thaliana. Read More

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http://www.plantphysiol.org/lookup/doi/10.1104/pp.19.00043
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http://dx.doi.org/10.1104/pp.19.00043DOI Listing
February 2019
4 Reads

The potassium transporter SlHAK10 is involved in mycorrhizal potassium uptake.

Plant Physiol 2019 Feb 13. Epub 2019 Feb 13.

Nanjing Agricultural University College of Resouces and Environmental Sciences, Nanjing Agricultural University, China CITY: Nanjing POSTAL_CODE: 210095 China [CN].

Most terrestrial plants form a root symbiosis with arbuscular mycorrhizal (AM) fungi, which receive fixed carbon from the plant and enhance the plant's uptake of mineral nutrients. AM symbiosis improves the phosphorous and nitrogen nutrition of host plants; however, little is known about the role of AM symbiosis in potassium (K+) nutrition. Here, we report that inoculation with the AM fungus Rhizophagus irregularis improved tomato (Solanum lycopersicum) plant growth and K+ acquisition, and K+ deficiency has a negative effect on root growth and AM colonization. Read More

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http://www.plantphysiol.org/lookup/doi/10.1104/pp.18.01533
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http://dx.doi.org/10.1104/pp.18.01533DOI Listing
February 2019
9 Reads

Isoprene Acts as a Signaling Molecule in Gene Networks Important for Stress Responses and Plant Growth.

Plant Physiol 2019 Feb 13. Epub 2019 Feb 13.

Michigan State University CITY: East Lansing STATE: Michigan POSTAL_CODE: 48824 United States Of America [US]

Isoprene synthase converts dimethylallyl diphosphate to isoprene and appears to be necessary and sufficient to allow plants to emit isoprene at significant rates. Isoprene can protect plants from abiotic stress but is not produced naturally by all plants; for example, Arabidopsis (Arabidopsis thaliana) and tobacco (Nicotiana tabacum) do not produce isoprene. It is typically present at very low concentrations, suggesting a role as a signaling molecule; however, its exact physiological role and mechanism of action are not fully understood. Read More

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http://dx.doi.org/10.1104/pp.18.01391DOI Listing
February 2019

Extrachloroplastic PP7L Functions in Chloroplast Development and Abiotic Stress Tolerance.

Plant Physiol 2019 Feb 13. Epub 2019 Feb 13.

Plant Molecular Biology (Botany), Department Biology I, Ludwig-Maximilians-Universität München CITY: Planegg-Martinsried POSTAL_CODE: 82152 Germany [DE]

Chloroplast biogenesis is indispensable for proper plant development and environmental acclimation. In a screen for mutants affected in photosynthesis, we identified the pp7l mutant, which displayed delayed chloroplast development in cotyledons and young leaves. PP7L, PP7 and PP7-long constitute a subfamily of phosphoprotein phosphatases (PPPs). Read More

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http://dx.doi.org/10.1104/pp.19.00070DOI Listing
February 2019

The AAA-ATPase MIDASIN 1 Functions in Ribosome Biogenesis and Is Essential for Embryo and Root Development.

Plant Physiol 2019 Feb 12. Epub 2019 Feb 12.

Shandong Academy of Agricultural Sciences CITY: Jinan STATE: Shandong POSTAL_CODE: 250100 China [CN]

Ribosome biogenesis is an orchestrated process that relies on many assembly factors. The AAA-ATPase Midasin 1 (Mdn1) functions as a ribosome assembly factor in yeast (Saccharomyces cerevisiae), but the roles of MDN1 in Arabidopsis thaliana are poorly understood. Here, we showed that the Arabidopsis null mutant of MDN1 is embryo-lethal. Read More

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http://dx.doi.org/10.1104/pp.18.01225DOI Listing
February 2019

Extensive variations in diurnal growth patterns and metabolism amongst Ulva spp strains.

Plant Physiol 2019 Feb 12. Epub 2019 Feb 12.

NUI Galway CITY: Galway Ireland [IE]

Green macroalgae of the genus Ulva play a key role in coastal ecosystems and are of increasing commercial importance. However, physiological differences between strains and species have yet to be described in detail. Furthermore, the strains of Ulva used in aquaculture usually originate from opportunistic collection in the wild without prior selection of best performing strains. Read More

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http://www.plantphysiol.org/lookup/doi/10.1104/pp.18.01513
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http://dx.doi.org/10.1104/pp.18.01513DOI Listing
February 2019
1 Read

A MYB Triad Controls Primary and Phenylpropanoid Metabolites for Pollen Coat Patterning.

Plant Physiol 2019 Feb 12. Epub 2019 Feb 12.

The Weizmann Institute of Science CITY: Rehovot 76100 POSTAL_CODE: . Israel [IL]

The pollen wall is a complex, durable structure essential for plant reproduction. A substantial portion of phenylpropanoids (e.g. Read More

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http://dx.doi.org/10.1104/pp.19.00009DOI Listing
February 2019

Histone deacetylase HDA19 affects root cortical cell fate by interacting with SCARECROW.

Plant Physiol 2019 Feb 8. Epub 2019 Feb 8.

Peking University CITY: Beijing POSTAL_CODE: 100871 China [CN]

The Arabidopsis root epidermis is a simple model for investigating cell fate specification and pattern formation. In addition to regulatory networks consisting of transcription factors, histone deacetylases are also involved in the formation of cellular patterns. Here, we report that HDA19 affects the root epidermal cellular pattern through regulation of cortical cell fate by interacting with SCARECROW (SCR). Read More

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http://dx.doi.org/10.1104/pp.19.00056DOI Listing
February 2019

Identification of novel inhibitors of auxin-induced Ca2+ signaling via a plant-based chemical screen.

Plant Physiol 2019 Feb 8. Epub 2019 Feb 8.

VIB CITY: Gent POSTAL_CODE: 9052 Belgium [BE]

Many signal perception mechanisms are connected to Ca2+-based second messenger signaling to modulate specific cellular responses. The well-characterized plant hormone auxin elicits a very rapid Ca2+ signal. However, the cellular targets of auxin-induced Ca2+ are largely unknown. Read More

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http://dx.doi.org/10.1104/pp.18.01393DOI Listing
February 2019

ABC transporter-mediated transport of glutathione conjugates enhances seed yield and quality in chickpea.

Plant Physiol 2019 Feb 8. Epub 2019 Feb 8.

NATIONAL INSTITUTE OF PLANT GENOME RESEARCH (NIPGR) CITY: NEW DELHI STATE: Delhi POSTAL_CODE: 110067 India [IN]

The identification of functionally relevant molecular tags is vital for genomics-assisted crop improvement and enhancement of seed yield, quality and productivity in chickpea. The simultaneous improvement of yield/productivity as well as quality traits often requires pyramiding of multiple genes, which remains a major hurdle given various associated epistatic and pleotropic effects. Unfortunately, no single gene that can improve yield/productivity along with quality and other desirable agromorphological traits is known, hampering the genetic enhancement of chickpea. Read More

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http://dx.doi.org/10.1104/pp.18.00934DOI Listing
February 2019

Fucoxanthin-chlorophyll protein complexes of the centric diatom Cyclotella meneghiniana differ in Lhcx1 and Lhcx6_1 content.

Plant Physiol 2019 Feb 7. Epub 2019 Feb 7.

Institute of Molecular Biosciences, Goethe University Frankfurt CITY: Frankfurt Germany [DE]

The ecological success of diatoms, key contributors to photosynthesis, is partly based on their ability to perfectly balance efficient light harvesting and photoprotection. Diatoms contain higher numbers of antenna proteins than vascular plants for light-harvesting and for photoprotection. These proteins are arranged in fucoxanthin-chlorophyll protein (FCP) complexes. Read More

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http://dx.doi.org/10.1104/pp.18.01363DOI Listing
February 2019

Low water potential and At14a-like 1 (AFL1) effects on endocytosis and actin filament organization.

Plant Physiol 2019 Feb 6. Epub 2019 Feb 6.

Academia Sinica CITY: Taipei POSTAL_CODE: 11526 Taiwan

At14a-Like1 (AFL1) is a stress-induced protein of unknown function that promotes growth during low water potential stress and drought. Previous analysis indicated that AFL1 may have functions related to endocytosis and regulation of actin filament organization, processes for which the effects of low water potential are little known. We found that low water potential led to a decrease in endocytosis, as measured by uptake of the membrane impermeable dye FM4-64. Read More

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http://dx.doi.org/10.1104/pp.18.01314DOI Listing
February 2019
1 Read

Branched-Chain Amino Acid Catabolism Impacts Triacylglycerol Homeostasis in Chlamydomonas reinhardtii.

Plant Physiol 2019 Feb 6. Epub 2019 Feb 6.

CEA Cadarache CITY: Saint paul lez durance POSTAL_CODE: 13108 France [FR]

Nitrogen (N) starvation-induced triacylglycerol (TAG) synthesis and its complex relationship with starch metabolism in algal cells has been intensively studied; however, few studies have examined the interaction between amino acid metabolism and TAG biosynthesis. Here, via a forward genetic screen for TAG homeostasis, we isolated a Chlamydomonas mutant (bkdE1α) that is deficient in the E1α subunit of the branched-chain ketoacid dehydrogenase (BCKDH) complex. Metabolomics analysis revealed a defect in the catabolism of branched-chain amino acids (BCAAs) in bkdE1α. Read More

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http://dx.doi.org/10.1104/pp.18.01584DOI Listing
February 2019

GOLDEN 2-LIKE Transcription Factors Regulate WRKY40 Expression in Response to Abscisic Acid.

Plant Physiol 2019 Feb 5. Epub 2019 Feb 5.

Life Science Department, Northeast Normal University CITY: Changchun STATE: Jilin POSTAL_CODE: 130024 China [CN]

Arabidopsis thaliana GARP (Golden 2, ARR-B, Psr1) family transcription factors, GOLDEN 2-LIKE 1 and 2 (GLK1/2), function in different biological processes; however, whether and how these transcription factors modulate the response to abscisic acid (ABA) remains unknown. In this study, we used a glk1 glk2 double mutant to understand the role of GLK1/2 in ABA response. The glk1 glk2 double mutant displayed ABA-hypersensitive phenotypes during seed germination and seedling development and an osmotic stress-resistant phenotype during seedling development. Read More

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http://dx.doi.org/10.1104/pp.18.01466DOI Listing
February 2019
2 Reads

Direct comparison of leaf plasmodesma structure and function in relation to phloem loading type.

Plant Physiol 2019 Feb 5. Epub 2019 Feb 5.

University of Copenhagen CITY: Frederiksberg POSTAL_CODE: 1871F Denmark [DK].

The export of photosynthetically produced sugars from leaves depends on plasmodesmatal transport of sugar molecules from mesophyll to phloem. Traditionally, the density of plasmodesmata (PD) along this phloem loading pathway has been used as a defining feature of different phloem loading types, with species proposed to have either many or few PD between the phloem and surrounding cells of the leaf. However, quantitative determination of PD density has rarely been performed. Read More

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http://dx.doi.org/10.1104/pp.18.01353DOI Listing
February 2019

The B-box-containing microprotein miP1a/BBX31 regulates photomorphogenesis and UV-B protection.

Plant Physiol 2019 Feb 5. Epub 2019 Feb 5.

Indian Institute of Science Education and Research (IISER) Bhopal CITY: Bhopal STATE: Madhya Pradesh India [IN]

The bZIP transcription factor ELONGATED HYPOCOTYL 5 (HY5) represents a major hub in the light-signaling cascade both under visible and UV-B light. The mode of transcriptional regulation of HY5, especially under UV-B light, is not well characterized. B-BOX (BBX) transcription factors regulate HY5 transcription and also post-transcriptionally modulate HY5 to control photomorphogenesis under white light. Read More

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http://www.plantphysiol.org/lookup/doi/10.1104/pp.18.01258
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http://dx.doi.org/10.1104/pp.18.01258DOI Listing
February 2019
6 Reads

Ascorbic acid integrates the antagonistic modulation of ethylene and abscisic acid in the accumulation of reactive oxygen species.

Plant Physiol 2019 Feb 5. Epub 2019 Feb 5.

Biotechnolgy Research Institute, Chinese Academy of Agricultural Sciences CITY: Beijing POSTAL_CODE: 100081 China [CN]

During plant growth and development, ethylene and abscisic acid (ABA) play important roles and exert synergistic or antagonistic effects on various biological processes, but the detailed mechanism underlying the interaction of the two phytohormones, especially in the regulation of the accumulation of reactive oxygen species (ROS), is largely unclear. Here, we report that ethylene inhibits but ABA promotes the accumulation of ROS in Arabidopsis (Arabidopsis thaliana) seedlings. Furthermore, changes in the biosynthesis of ascorbic acid (AsA) act as a key factor in integrating the interaction of ethylene and ABA in the regulation of ROS levels. Read More

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http://www.plantphysiol.org/lookup/doi/10.1104/pp.18.01250
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http://dx.doi.org/10.1104/pp.18.01250DOI Listing
February 2019
2 Reads

Spatiotemporal coupling of vessel cavitation and discharge of stored xylem water in a tree sapling.

Plant Physiol 2019 Feb 4. Epub 2019 Feb 4.

USDA-Agricultural Research Service & UC Davis . CITY: Davis STATE: CA POSTAL_CODE: . United States Of America [US].

Water discharge from stem internal storage compartments is thought to minimize the risk of vessel cavitation. Based on this concept, one would expect that water storage compartments involved in the buffering of xylem tensions empty prior to the onset of vessel cavitation under drought stress, and potentially refill following soil saturation. However, scant in-vivo data exist that elucidate this localized spatiotemporal coupling. Read More

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http://dx.doi.org/10.1104/pp.18.01303DOI Listing
February 2019

Single-cell RNA sequencing resolves molecular relationships among individual plant cells.

Plant Physiol 2019 Feb 4. Epub 2019 Feb 4.

University of Michigan CITY: Ann Arbor STATE: Michigan POSTAL_CODE: 48109-1048 United States Of America [US]

Single-cell RNA sequencing (scRNA-seq) has been used extensively to study cell-specific gene expression in animals, but it has not been widely applied to plants. Here, we describe the use of a commercially available droplet-based microfluidics platform for high-throughput scRNA-seq to obtain single-cell transcriptomes from protoplasts from more than 10,000 Arabidopsis root cells. We find that all major tissues and developmental stages are represented in this single-cell transcriptome population. Read More

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http://www.plantphysiol.org/lookup/doi/10.1104/pp.18.01482
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http://dx.doi.org/10.1104/pp.18.01482DOI Listing
February 2019
2 Reads

Fluctuating Light Interacts with Time of Day and Leaf Development Stage to Reprogram Gene Expression.

Plant Physiol 2019 Feb 4. Epub 2019 Feb 4.

Forschungszentrum Juelich CITY: Juelich POSTAL_CODE: 52425 Germany [DE]

Natural-light environments are highly variable. Flexible adjustment between light energy utilization and photoprotection is therefore of vital importance for plant performance and fitness in the field. Short-term reactions to changing light intensity are triggered inside chloroplasts and leaves within seconds to minutes, whereas long-term adjustments proceed over hours and days, integrating multiple signals. Read More

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http://dx.doi.org/10.1104/pp.18.01443DOI Listing
February 2019

Osmotic stress activates two reactive oxygen species pathways with distinct effects on protein nanodomains and diffusion.

Plant Physiol 2019 Feb 4. Epub 2019 Feb 4.

SupAgro/INRA/CNRS/UM UMR 5004 CITY: Montpellier Cedex 1 POSTAL_CODE: F-34 060 France [FR].

Physiological acclimation of plants to an ever-changing environment is governed by complex combinatorial signaling networks that perceive and transduce various abiotic and biotic stimuli. Reactive oxygen species (ROS) serve as one of the second messengers in plant responses to hyperosmotic stress. The molecular bases of ROS production and the primary cellular processes that they target were investigated in the Arabidopsis (Arabidopsis thaliana) root. Read More

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http://dx.doi.org/10.1104/pp.18.01065DOI Listing
February 2019

SEED CAROTENOID DEFICIENT Functions in Isoprenoid Biosynthesis via the Plastid MEP Pathway.

Plant Physiol 2019 Feb 4. Epub 2019 Feb 4.

China Agricultural University CITY: Beijing POSTAL_CODE: 100193 China [CN]

Plastid isoprenoids, a diverse group of compounds that includes carotenoids, chlorophylls, tocopherols, and multiple hormones, are essential for plant growth and development. Here, we identified SEED CAROTENOID DEFICIENT (SCD), which encodes an enzyme that functions in the biosynthesis of plastid isoprenoids in maize (Zea mays). SCD converts 2C-methyl-D-erytrithol 2,4-cyclodiphosphate (MEcPP) to 1-hydroxy-2-methyl-2-(E)-butenyl 4-diphosphate (HMBPP) in the second-to-last step of the methylerythritol phosphate (MEP) pathway. Read More

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http://dx.doi.org/10.1104/pp.18.01148DOI Listing
February 2019
1 Read

Senescence and defense pathways contribute to heterosis.

Plant Physiol 2019 Feb 1. Epub 2019 Feb 1.

CSIRO Agriculture and Food CITY: Canberra STATE: ACT 2601 POSTAL_CODE: 2600 Australia [AU]

Hybrids are used extensively in agriculture due to their superior performance in seed yield and plant growth, yet the molecular mechanisms underpinning hybrid performance are not well understood. Recent evidence has suggested that a decrease in basal defense response gene expression regulated by reduced levels of salicylic acid (SA) may be important for vigor in certain hybrid combinations. Decreasing levels of SA in the Arabidopsis thaliana accession C24 through the introduction of the SA catabolic enzyme salicylate 1 hydroxylase (NahG) increases plant size, phenocopying the large sized C24/Landsberg erecta (Ler) F1 hybrids. Read More

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http://dx.doi.org/10.1104/pp.18.01205DOI Listing
February 2019

NIN acts as a Network Hub Controlling a Growth Module Required for Rhizobial Infection.

Plant Physiol 2019 Feb 1. Epub 2019 Feb 1.

Shanghai Institute of Plant Physiology and Ecology CITY: Shanghai STATE: Shanghai POSTAL_CODE: NR4 7UH China [CN]

The symbiotic infection of root cells by nitrogen-fixing rhizobia bacteria during nodulation requires the transcription factor Nodule Inception (NIN). Our root hair transcriptomic study extends NIN's regulon to include RHIZOBIUM POLAR GROWTH (RPG) and genes involved in cell wall modification, gibberellin biosynthesis, and a comprehensive group of nutrient (N, P, S) uptake and assimilation genes, suggesting that NIN's recruitment to nodulation was based on its role as a growth module, a role shared with other NIN-Like Proteins (NLPs). The expression of JA-genes in nin suggests involvement of NIN in the resolution of growth versus defence outcomes. Read More

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http://dx.doi.org/10.1104/pp.18.01572DOI Listing
February 2019

Natural variation in 9-cis-epoxycartenoid dioxygenase 3 and ABA accumulation.

Plant Physiol 2019 Feb 1. Epub 2019 Feb 1.

Academia Sinica CITY: Taipei POSTAL_CODE: 11526 Taiwan

The stress hormone abscisic acid (ABA) is critical for drought resistance; however, mechanisms controlling ABA levels are unclear. At low water potential, ABA accumulation in the Arabidopsis thaliana accession Shahdara (Sha) was less than that in Landsberg erecta (Ler) or Columbia. Analysis of a Ler x Sha recombinant inbred line population revealed a single major effect quantitative trait locus for ABA accumulation, which included 9-cis-epoxycarotenoid dioxygenase 3 (NCED3) as a candidate gene. Read More

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http://dx.doi.org/10.1104/pp.18.01185DOI Listing
February 2019

Polar Localization of the Borate Exporter BOR1 Requires AP2-Dependent Endocytosis.

Plant Physiol 2019 Feb 1. Epub 2019 Feb 1.

Osaka Prefecture University CITY: Sakai POSTAL_CODE: 060-8589 Japan [JP]

Boron (B) is an essential element in plants but is toxic when it accumulates to high levels. In root cells of Arabidopsis thaliana, the borate exporter BOR1 is polarly localized in the plasma membrane toward the stele-side for directional transport of B. Upon high-B supply, BOR1 is rapidly internalized and degraded in the vacuole. Read More

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http://dx.doi.org/10.1104/pp.18.01017DOI Listing
February 2019
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A functional unfolded protein response is required for normal vegetative development.

Plant Physiol 2019 Feb 1. Epub 2019 Feb 1.

Iowa State University CITY: Ames STATE: Iowa POSTAL_CODE: 50011 United States Of America [US]

The Unfolded Protein Response (UPR) is activated in plants in response to endoplasmic reticulum (ER) stress and plays an important role in mitigating stress damage. Multiple factors act in the UPR including the membrane-associated transcription factor, bZIP17, and the membrane-associated RNA splicing factor, INOSITOL REQUIRING ENZYME1 (IRE1). We have analyzed an Arabidopsis (Arabidopsis thaliana) ire1a ire1b bzip17 triple mutant, with defects in stress signaling, and found that the mutant is also impaired in vegetative plant growth under conditions without externally applied stress. Read More

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http://dx.doi.org/10.1104/pp.18.01261DOI Listing
February 2019

CORRECTION: Vol. 167: 1361-1373, 2015.

Authors:

Plant Physiol 2019 Feb;179(2):770-771

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http://dx.doi.org/10.1104/pp.18.01488DOI Listing
February 2019

Hijacking the ER Membrane: Lessons from .

Plant Physiol 2019 Feb;179(2):367-368

Department of Plant Biology, Michigan State University, East Lansing, Michigan 48824

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http://dx.doi.org/10.1104/pp.18.01551DOI Listing
February 2019

Functions of extracellular vesicles in immunity and virulence.

Plant Physiol 2019 Jan 31. Epub 2019 Jan 31.

LMU Munich CITY: Munich Germany [DE]

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http://dx.doi.org/10.1104/pp.18.01557DOI Listing
January 2019

Protein phosphatase 2A B'α and B'β protect the centromeric cohesion during meiosis I.

Plant Physiol 2019 Jan 31. Epub 2019 Jan 31.

Institute of Molecular Cell Biology CITY: Shijiazhuang STATE: Hebei POSTAL_CODE: 050024 China [CN]

During meiosis, the stepwise release of sister chromatid cohesion is crucial for the equal distribution of genetic material to daughter cells, enabling generation of fertile gametophytes. However, the molecular mechanism that protects centromeric cohesion from release at meiosis I is unclear in Arabidopsis (Arabidopsis thaliana). Here, we report that the protein phosphatase 2A (PP2A) regulatory subunits B'α and B'β participate in the control of sister chromatid separation. Read More

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http://dx.doi.org/10.1104/pp.18.01320DOI Listing
January 2019

Myosins XI Are Involved in Exocytosis of Cellulose Synthase Complexes.

Plant Physiol 2019 Jan 31. Epub 2019 Jan 31.

Purdue University CITY: West Lafayette STATE: Indiana POSTAL_CODE: 47907-2064 United States Of America [US]

In plants, cellulose is synthesized at the cell surface by plasma membrane (PM)-localized cellulose synthase (CESA) complexes (CSCs). The molecular and cellular mechanisms that underpin delivery of CSCs to the PM, however, are poorly understood. Cortical microtubules have been shown to interact with CESA-containing compartments and mark the site for CSC delivery, but are not required for the delivery itself. Read More

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http://dx.doi.org/10.1104/pp.19.00018DOI Listing
January 2019

The UAP56-interacting export factors UIEF1 and UIEF2 function in mRNA export.

Plant Physiol 2019 Jan 30. Epub 2019 Jan 30.

Regensburg University CITY: Regensburg POSTAL_CODE: D-93053 Germany [DE]

In eukaryotes, the regulated transport of mRNAs from the nucleus to the cytosol through nuclear pore complexes represents an important step in the expression of protein-coding genes. In plants, the mechanism of nucleocytosolic mRNA transport and the factors involved are poorly understood. The Arabidopsis thaliana genome encodes two likely orthologues of UAP56-interacting factor (UIF), which acts as mRNA export factor in mammalian cells. Read More

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http://www.plantphysiol.org/lookup/doi/10.1104/pp.18.01476
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http://dx.doi.org/10.1104/pp.18.01476DOI Listing
January 2019
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A Multilevel Study of Melon Fruit Reticulation Provides Insight into Skin Ligno-suberization Hallmarks.

Plant Physiol 2019 Jan 30. Epub 2019 Jan 30.

The Weizmann Institute of Science CITY: Rehovot 76100 POSTAL_CODE: . Israel [IL]

The skin of fleshy fruit is typically covered by a thick cuticle. Yet, some fruit species develop different forms of layers directly above their skin. Reticulation for example, is a specialized suberin-based coating that ornaments melon (Cucumis melo L. Read More

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http://dx.doi.org/10.1104/pp.18.01158DOI Listing
January 2019

Loliolide, a carotenoid metabolite, is a potential endogenous inducer of herbivore resistance.

Plant Physiol 2019 Jan 30. Epub 2019 Jan 30.

Institute of Agrobiological Sciences, National Agriculture and Food Research Organization CITY: Tsukuba STATE: Ibaraki POSTAL_CODE: 305-8602 Japan [JP]

Jasmonic acid (JA) plays an important role in the induction of herbivore resistance in many plants. However, JA-independent herbivore resistance has been suggested. An herbivore-resistance-inducing substance was isolated from Tobacco mosaic virus-infected tobacco (Nicotiana tabacum) leaves in which a hypersensitive response (HR) was induced and identified as loliolide, which has been identified as a β-carotene metabolite. Read More

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http://www.plantphysiol.org/lookup/doi/10.1104/pp.18.00837
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http://dx.doi.org/10.1104/pp.18.00837DOI Listing
January 2019
8 Reads