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    2548 results match your criteria BMC Plant Biology [Journal]

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    Geometric morphometrics reveals shifts in flower shape symmetry and size following gene knockdown of CYCLOIDEA and ANTHOCYANIDIN SYNTHASE.
    BMC Plant Biol 2017 Nov 17;17(1):205. Epub 2017 Nov 17.
    Department of Biological Sciences, St. John's University, 8000 Utopia Parkway, Queens, NY, 11439, USA.
    Background: While floral symmetry has traditionally been assessed qualitatively, recent advances in geometric morphometrics have opened up new avenues to specifically quantify flower shape and size using robust multivariate statistical methods. In this study, we examine, for the first time, the ability of geometric morphometrics to detect morphological differences in floral dorsoventral asymmetry following virus-induced gene silencing (VIGS). Using Fedia graciliflora Fisch. Read More

    Genome-wide analysis of the auxin/indoleacetic acid (Aux/IAA) gene family in allotetraploid rapeseed (Brassica napus L.).
    BMC Plant Biol 2017 Nov 16;17(1):204. Epub 2017 Nov 16.
    National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, 430070, China.
    Background: Auxin/Indoleacetic acid (Aux/IAA) genes participate in the auxin signaling pathway and play key roles in plant growth and development. Although the Aux/IAA gene family has been identified in many plants, within allotetraploid Brassica napus little is known.

    Results: In this study, a total of 119 Aux/IAA genes were found in the genome of B. Read More

    GWAS of agronomic traits in soybean collection included in breeding pool in Kazakhstan.
    BMC Plant Biol 2017 Nov 14;17(Suppl 1):179. Epub 2017 Nov 14.
    Institute of Plant Biology and Biotechnology, Almaty, Kazakhstan, 050040.
    Background: In recent years soybean is becoming one of the most important oilseed crops in Kazakhstan. Only within the last ten years (2006-2016), the area under soybean is expanded from 45 thousand hectares (ha) in 2006 to 120 thousand ha in 2016. The general trend of soybean expansion is from south-eastern to eastern and northern regions of the country, where average temperatures are lower and growing seasons are shorter. Read More

    A key enzyme of animal steroidogenesis can function in plants enhancing their immunity and accelerating the processes of growth and development.
    BMC Plant Biol 2017 Nov 14;17(Suppl 1):189. Epub 2017 Nov 14.
    Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, Russia.
    Background: The initial stage of the biosynthesis of steroid hormones in animals occurs in the mitochondria of steroidogenic tissues, where cytochrome P450SCC (CYP11A1) encoded by the CYP11A1 gene catalyzes the conversion of cholesterol into pregnenolone - the general precursor of all the steroid hormones, starting with progesterone. This stage is missing in plants where mitochondrial cytochromes P450 (the mito CYP clan) have not been found. Generating transgenic plants with a mitochondrial type P450 from animals would offer an interesting option to verify whether plant mitochondria could serve as another site of P450 monooxygenase reaction for the steroid hormones biosynthesis. Read More

    Phylogenetic study of the endemic species Oxytropis almaatensis (Fabaceae) based on nuclear ribosomal DNA ITS sequences.
    BMC Plant Biol 2017 Nov 14;17(Suppl 1):173. Epub 2017 Nov 14.
    Institute of Plant Biology and Biotechnology, Almaty, Kazakhstan, 050040.
    Background: Oxytropis almaatensis Bajt. is a rare, narrow endemic species of the Trans-Ili Alatau mountains in Kazakhstan. Up to now, no studies regarding the taxonomy and variation of key morphological traits of O. Read More

    Identification and characterization of regulatory network components for anthocyanin synthesis in barley aleurone.
    BMC Plant Biol 2017 Nov 14;17(Suppl 1):184. Epub 2017 Nov 14.
    Institute of Cytology and Genetics, Siberian Branch of the Russian Academy of Sciences, Lavrentjeva ave. 10, Novosibirsk, 630090, Russia.
    Background: Among natural populations, there are different colours of barley (Hordeum vulgare L.). The colour of barley grains is directly related to the accumulation of different pigments in the aleurone layer, pericarp and lemma. Read More

    Development of F1 hybrid population and the high-density linkage map for European aspen (Populus tremula L.) using RADseq technology.
    BMC Plant Biol 2017 Nov 14;17(Suppl 1):180. Epub 2017 Nov 14.
    Saint Petersburg State Forest Technical University, Institutskiy per, 5, 194021, St. Petersburg, Russia.
    Background: Restriction-site associated DNA sequencing (RADseq) technology was recently employed to identify a large number of single nucleotide polymorphisms (SNP) for linkage mapping of a North American and Eastern Asian Populus species. However, there is also the need for high-density genetic linkage maps for the European aspen (P. tremula) as a tool for further mapping of quantitative trait loci (QTLs) and marker-assisted selection of the Populus species native to Europe. Read More

    Features of Ppd-B1 expression regulation and their impact on the flowering time of wheat near-isogenic lines.
    BMC Plant Biol 2017 Nov 14;17(Suppl 1):172. Epub 2017 Nov 14.
    The Federal Research Center "Institute of Cytology and Genetics of Siberian Branch of the Russian Academy of Sciences", Prospekt Lavrentyeva 10, Novosibirsk, Russian Federation, 630090.
    Background: Photoperiod insensitive Ppd-1a alleles determine early flowering of wheat. Increased expression of homoeologous Ppd-D1a and Ppd-A1a result from deletions in the promoter region, and elevated expression of Ppd-B1a is determined by an increased copy number.

    Results: In this study, using bread wheat cultivars Sonora and PSL2, which contrast in flowering time, and near-isogenic lines resulting from their cross, "Ppd-m" and "Ppd-w" with Ppd-B1a introgressed from Sonora, we investigated the putative factors that influence Ppd-B1a expression. Read More

    Metabolic pathways and genes identified by RNA-seq analysis of barley near-isogenic lines differing by allelic state of the Black lemma and pericarp (Blp) gene.
    BMC Plant Biol 2017 Nov 14;17(Suppl 1):182. Epub 2017 Nov 14.
    Institute of Cytology and Genetics SB RAS, Novosibirsk, Russia.
    Background: Some plant species have 'melanin-like' black seed pigmentation. However, the chemical and genetic nature of this 'melanin-like' black pigment have not yet been fully explored due to its complex structure and ability to withstand almost all solvents. Nevertheless, identification of genetic networks participating in trait formation is key to understanding metabolic processes involved in the expression of 'melanin-like' black seed pigmentation. Read More

    Impact of the 7-bp deletion in HvGA20ox2 gene on agronomic important traits in barley (Hordeum vulgare L.).
    BMC Plant Biol 2017 Nov 14;17(Suppl 1):181. Epub 2017 Nov 14.
    Saint Petersburg State University, Universitetskaya emb.7/9, St. Petersburg, 199034, Russia.
    Background: Alike to Reduced height-1 (Rht-1) genes in wheat and the semi dwarfing (sd-1) gene in rice, the sdw1/denso locus involved in the metabolism of the GA, was designated as the 'Green Revolution' gene in barley. The recent molecular characterization of the candidate gene HvGA20ox2 for sdw1/denso locus allows to estimate the impact of the functional polymorphism of this gene on the variation of agronomically important traits in barley.

    Results: We investigated the effect of the 7-bp deletion in exon 1 of HvGA20ox2 gene (sdw1. Read More

    Fine organization of genomic regions tagged to the 5S rDNA locus of the bread wheat 5B chromosome.
    BMC Plant Biol 2017 Nov 14;17(Suppl 1):183. Epub 2017 Nov 14.
    The Federal Research Center "Institute of Cytology and Genetics SB RAS", Novosibirsk, Russia.
    Background: The multigene family encoding the 5S rRNA, one of the most important structurally-functional part of the large ribosomal subunit, is an obligate component of all eukaryotic genomes. 5S rDNA has long been a favored target for cytological and phylogenetic studies due to the inherent peculiarities of its structural organization, such as the tandem arrays of repetitive units and their high interspecific divergence. The complex polyploid nature of the genome of bread wheat, Triticum aestivum, and the technically difficult task of sequencing clusters of tandem repeats mean that the detailed organization of extended genomic regions containing 5S rRNA genes remains unclear. Read More

    Evolution of VRN-1 homoeologous loci in allopolyploids of Triticum and their diploid precursors.
    BMC Plant Biol 2017 Nov 14;17(Suppl 1):188. Epub 2017 Nov 14.
    The Federal Research Center "Institute of Cytology and Genetics of Siberian Branch of the Russian Academy of Sciences", Lavrentiev ave. 10, Novosibirsk, 630090, Russia.
    Background: The key gene in genetic system controlling the duration of the vegetative period in cereals is the VRN1 gene, whose product under the influence of low temperature (vernalization) promotes the transition of the apical meristem cells into a competent state for the development of generative tissues of spike. As early genetic studies shown, the dominant alleles of this gene underlie the spring forms of plants that do not require vernalization for this transition. In wheat allopolyploids various combinations of alleles of the VRN1 homoeologous loci (VRN1 homoeoalleles) provide diversity in such important traits as the time to heading, height of plants and yield. Read More

    Molecular and agro-morphological characterization of ancient wheat landraces of turkey.
    BMC Plant Biol 2017 Nov 14;17(Suppl 1):171. Epub 2017 Nov 14.
    Department of Field Crops, Faculty of Agriculture, Akdeniz University, Antalya, Turkey.
    Background: Turkey is one of the important gene centers for many crop species. In this research, some ancient wheats such as tetraploid and diploid hulled wheats together with hexaploid tir wheats (Triticum aestivum ssp. leucospermum Korn. Read More

    Morphological description and DNA barcoding study of sand rice (Agriophyllum squarrosum, Chenopodiaceae) collected in Kazakhstan.
    BMC Plant Biol 2017 Nov 14;17(Suppl 1):177. Epub 2017 Nov 14.
    Institute of Plant Biology and Biotechnology, Almaty, Kazakhstan, 050040.
    Background: Sand rice (Agriophyllum squarrosum (L.) Moq.) is an annual shrub-like plant adapted to the mobile sand dunes in desert and semi-desert regions of Asia. Read More

    Characterizing the pathotype structure of barley powdery mildew and effectiveness of resistance genes to this pathogen in Kazakhstan.
    BMC Plant Biol 2017 Nov 14;17(Suppl 1):178. Epub 2017 Nov 14.
    Kazakh Research Institute of Farming and Crop Science, Almalibak, Karasaisky rayon, Almatinskaya oblast, Kazakhstan.
    Background: Powdery mildew of barley is a wind-borne and obligate biotrophic pathogen, which ranks among the most widespread barley pathogens worldwide. However, purposeful research towards studying the structure of the barley powdery mildew populations, of their virulence and of effectiveness of certain resistance genes against the infection was not conducted in Kazakhstan till present time. This paper is the first to describe characteristics of the pathotype structure of Blumeria graminis f. Read More

    GWAS for plant growth stages and yield components in spring wheat (Triticum aestivum L.) harvested in three regions of Kazakhstan.
    BMC Plant Biol 2017 Nov 14;17(Suppl 1):190. Epub 2017 Nov 14.
    Institute of Plant Biology and Biotechnology, Almaty, Kazakhstan, 050040.
    Background: Spring wheat is the largest agricultural crop grown in Kazakhstan with an annual sowing area of 12 million hectares in 2016. Annually, the country harvests around 15 million tons of high quality grain. Despite environmental stress factors it is predicted that the use of new technologies may lead to increases in productivity from current levels of 1. Read More

    Profiling membrane glycerolipids during γ-ray-induced membrane injury.
    BMC Plant Biol 2017 Nov 15;17(1):203. Epub 2017 Nov 15.
    Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, Yunnan, 650201, People's Republic of China.
    Background: γ-rays are high-energy radiation that cause a range of random injuries to plant cells. Most studies on this issue have focused on γ-ray-induced nucleotide damage and the production of reactive oxygen species in cells, so little is known about the glycerolipid metabolism during γ-rays induced membrane injury. Using an ESI-MS/MS-based lipidomic method, we analysed the lipidome changes in wild-type and phospholipase D (PLD)δ- and α1-deficient Arabidopsis after γ-ray treatment. Read More

    Transcriptome analysis in petals and leaves of chrysanthemums with different chlorophyll levels.
    BMC Plant Biol 2017 Nov 15;17(1):202. Epub 2017 Nov 15.
    Institute of Vegetable and Floriculture Science, National Agriculture and Food Research Organization, Fujimoto 2-1, Tsukuba, Ibaraki, 305-0852, Japan.
    Background: Chlorophylls (Chls) are magnesium-containing tetrapyrrole macromolecules responsible for the green color in plants. The Chl metabolic pathway has been intensively studied and nearly all the enzymes involved in the pathway have been identified and characterized. Synthesis and activity of these enzymes are tightly regulated in tissue- and developmental stage-specific manners. Read More

    The pennycress (Thlaspi arvense L.) nectary: structural and transcriptomic characterization.
    BMC Plant Biol 2017 Nov 14;17(1):201. Epub 2017 Nov 14.
    Department of Plant & Microbial Biology, University of Minnesota Twin Cities, Saint Paul, MN, 55108, USA.
    Background: Pennycress [Thlaspi arvense L (Brassicaceae)] is being domesticated as a renewable biodiesel feedstock that also provides crucial ecosystems services, including as a nutritional resource for pollinators. However, its flowers produce significantly less nectar than other crop relatives in the Brassicaceae. This study was undertaken to understand the basic biology of the pennycress nectary as an initial step toward the possibility of enhancing nectar output from its flowers. Read More

    Involvement of LeMDR, an ATP-binding cassette protein gene, in shikonin transport and biosynthesis in Lithospermum erythrorhizon.
    BMC Plant Biol 2017 Nov 13;17(1):198. Epub 2017 Nov 13.
    Institute of Plant Molecular Biology, State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, No. 163 Xianlin Avenue, Qixia District, Nanjing, 210023, People's Republic of China.
    Background: Shikonin is a naphthoquinone secondary metabolite with important medicinal value and is found in Lithospermum erythrorhizon. Considering the limited knowledge on the membrane transport mechanism of shikonin, this study investigated such molecular mechanism.

    Results: We successfully isolated an ATP-binding cassette protein gene, LeMDR, from L. Read More

    RNA-Seq analysis of resistant and susceptible sub-tropical maize lines reveals a role for kauralexins in resistance to grey leaf spot disease, caused by Cercospora zeina.
    BMC Plant Biol 2017 Nov 13;17(1):197. Epub 2017 Nov 13.
    Department of Molecular and Cell Biology, University of Cape Town, Private Bag, Rondebosch, Cape Town, 7701, South Africa.
    Background: Cercospora zeina is a foliar pathogen responsible for maize grey leaf spot in southern Africa that negatively impacts maize production. Plants use a variety of chemical and structural mechanisms to defend themselves against invading pathogens such as C. zeina, including the production of secondary metabolites with antimicrobial properties. Read More

    Plant-mediated RNAi silences midgut-expressed genes in congeneric lepidopteran insects in nature.
    BMC Plant Biol 2017 Nov 13;17(1):199. Epub 2017 Nov 13.
    Department of Molecular Ecology, Max-Planck-Institute for Chemical Ecology, Hans-Knöll-Str. 8, D-07745, Jena, Germany.
    Background: Plant-mediated RNAi (PMRi) silencing of insect genes has enormous potential for crop protection, but whether it works robustly under field conditions, particularly with lepidopteran pests, remains controversial. Wild tobacco Nicotiana attenuata and cultivated tobacco (N. tabacum) (Solanaceae) is attacked by two closely related specialist herbivores Manduca sexta and M. Read More

    Population genetic structure is shaped by historical, geographic, and environmental factors in the leguminous shrub Caragana microphylla on the Inner Mongolia Plateau of China.
    BMC Plant Biol 2017 Nov 13;17(1):200. Epub 2017 Nov 13.
    Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100193, China.
    Background: Understanding how landscape factors, including suites of geographic and environmental variables, and both historical and contemporary ecological and evolutionary processes shape the distribution of genetic diversity is a primary goal of landscape and conservation genetics and may be particularly consequential for species involved in ecological restoration. In this study, we examine the factors that shape the distribution of genetic variation in a leguminous shrub (Caragana microphylla) important for restoration efforts on the Mongolian Plateau in China. This region houses several major bioclimatic gradients, and C. Read More

    What makes for sound science?
    BMC Plant Biol 2017 Nov 10;17(1):196. Epub 2017 Nov 10.
    CSIRO Agriculture and Food, Canberra, Australia.
    The inclusive threshold policy for publication in BMC journals including BMC Plant Biology means that editorial decisions are largely based on the soundness of the research presented rather than the novelty or potential impact of the work. Here we discuss what is required to ensure that research meets the requirement of scientific soundness. BMC Plant Biology and the other BCM-series journals ( https://www. Read More

    The roles of call wall invertase inhibitor in regulating chilling tolerance in tomato.
    BMC Plant Biol 2017 Nov 9;17(1):195. Epub 2017 Nov 9.
    Hubei Key Laboratory of Genetic Regulation and Integrative Biology, School of Life Sciences, Central China Normal University, Wuhan, 430079, People's Republic of China.
    Background: Hexoses are important metabolic signals that respond to abiotic and biotic stresses. Cold stress adversely affects plant growth and development, limiting productivity. The mechanism by which sugars regulate plant cold tolerance remains elusive. Read More

    Co-expression network analysis of the transcriptomes of rice roots exposed to various cadmium stresses reveals universal cadmium-responsive genes.
    BMC Plant Biol 2017 Nov 7;17(1):194. Epub 2017 Nov 7.
    National Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing, China.
    Background: The migration of cadmium (Cd) from contaminated soil to rice is a cause for concern. However, the molecular mechanism underlying the response of rice roots to various Cd stresses remains to be clarified from the viewpoint of the co-expression network at a system-wide scale.

    Results: We employed a comparative RNAseq-based approach to identify early Cd-responsive differentially expressed genes (DEGs) in rice 'Nipponbare' seedling roots after 1 h of high-Cd treatment. Read More

    Genome-wide analysis of the cellulose synthase-like (Csl) gene family in bread wheat (Triticum aestivum L.).
    BMC Plant Biol 2017 Nov 3;17(1):193. Epub 2017 Nov 3.
    Department of Plant Science, McGill University, Sainte Anne de Bellevue, QC, Canada.
    Background: Hemicelluloses are a diverse group of complex, non-cellulosic polysaccharides, which constitute approximately one-third of the plant cell wall and find use as dietary fibres, food additives and raw materials for biofuels. Genes involved in hemicellulose synthesis have not been extensively studied in small grain cereals.

    Results: In efforts to isolate the sequences for the cellulose synthase-like (Csl) gene family from wheat, we identified 108 genes (hereafter referred to as TaCsl). Read More

    Genetic dissection of Sharka disease tolerance in peach (P. persica L. Batsch).
    BMC Plant Biol 2017 Nov 3;17(1):192. Epub 2017 Nov 3.
    Department of Agricultural and Environmental Sciences (DISAA), University of Milan, via Celoria 2, Milan, Italy.
    Background: Plum pox virus (PPV), agent of Sharka disease, is the most important quarantine pathogen of peach (P. persica L. Batsch). Read More

    Assessment of genetic diversity and yield performance in Jordanian barley (Hordeum vulgare L.) landraces grown under Rainfed conditions.
    BMC Plant Biol 2017 Nov 2;17(1):191. Epub 2017 Nov 2.
    Department of Horticulture and Crop Science, Faculty of Agriculture, The University of Jordan, Amman, 11942, Jordan.
    Background: Barley (Hordeum vulgare L.) is a major cereal crop, which is cultivated under variable environmental conditions and abiotic stresses in marginal areas around the globe. In this study, we evaluated 150 Jordanian landraces obtained from ICARDA Gene Bank and four local checks for yield and yield components related-traits in two locations across Jordan for three growing seasons under rainfed conditions. Read More

    A cadmium stress-responsive gene AtFC1 confers plant tolerance to cadmium toxicity.
    BMC Plant Biol 2017 Oct 30;17(1):187. Epub 2017 Oct 30.
    Department of Biochemistry and Molecular Biology, College of Life Sciences, Nanjing Agricultural University, Nanjing, 210095, China.
    Background: Non-essential trance metal such as cadmium (Cd) is toxic to plants. Although some plants have developed elaborate strategies to deal with absorbed Cd through multiple pathways, the regulatory mechanisms behind the Cd tolerance are not fully understood. Ferrochelatase-1 (FC1, EC4. Read More

    Global analysis of the MATE gene family of metabolite transporters in tomato.
    BMC Plant Biol 2017 Oct 30;17(1):185. Epub 2017 Oct 30.
    Division of Plant and Soil Sciences, West Virginia University, 3425 New Agricultural Sciences Building, Morgantown, WV, 26506-6108, USA.
    Background: Species in the Solanaceae family are known for producing plethora of specialized metabolites. In addition to biosynthesis pathways, a full comprehension of secondary metabolism must also take into account the transport and subcellular compartmentalization of substances. Here, we examined the MATE (Multidrug and Toxic Compound Extrusion, or Multi-Antimicrobial Extrusion) gene family in the tomato (Solanum lycopersicum) genome with the objective of better understanding the transport of secondary metabolites in this model species. Read More

    Gene coexpression network analysis of fruit transcriptomes uncovers a possible mechanistically distinct class of sugar/acid ratio-associated genes in sweet orange.
    BMC Plant Biol 2017 Oct 30;17(1):186. Epub 2017 Oct 30.
    Plant Nutrient Signaling and Fruit Quality Improvement Laboratory, National Citrus Engineering Research Center, Citrus Research Institute, Southwest University, Beibei, Chongqing, 400712, China.
    Background: The ratio of sugars to organic acids, two of the major metabolites in fleshy fruits, has been considered the most important contributor to fruit sweetness. Although accumulation of sugars and acids have been extensively studied, whether plants evolve a mechanism to maintain, sense or respond to the fruit sugar/acid ratio remains a mystery. In a prior study, we used an integrated systems biology tool to identify a group of 39 acid-associated genes from the fruit transcriptomes in four sweet orange varieties (Citrus sinensis L. Read More

    Transposable elements generate population-specific insertional patterns and allelic variation in genes of wild emmer wheat (Triticum turgidum ssp. dicoccoides).
    BMC Plant Biol 2017 Oct 27;17(1):175. Epub 2017 Oct 27.
    Department of Life Sciences, Ben-Gurion University, 84105, Beer-Sheva, Israel.
    Background: Natural populations of the tetraploid wild emmer wheat (genome AABB) were previously shown to demonstrate eco-geographically structured genetic and epigenetic diversity. Transposable elements (TEs) might make up a significant part of the genetic and epigenetic variation between individuals and populations because they comprise over 80% of the wild emmer wheat genome. In this study, we performed detailed analyses to assess the dynamics of transposable elements in 50 accessions of wild emmer wheat collected from 5 geographically isolated sites. Read More

    Genome-wide analysis of wheat calcium ATPases and potential role of selected ACAs and ECAs in calcium stress.
    BMC Plant Biol 2017 Oct 27;17(1):174. Epub 2017 Oct 27.
    Atta-ur-Rahman School of Applied Biosciences, National University of Sciences and Technology, Islamabad, 44000, Pakistan.
    Background: P2- type calcium ATPases (ACAs-auto inhibited calcium ATPases and ECAs-endoplasmic reticulum calcium ATPases) belong to the P- type ATPase family of active membrane transporters and are significantly involved in maintaining accurate levels of Ca(2+), Mn(2+) and Zn(2+) in the cytosol as well as playing a very important role in stress signaling, stomatal opening and closing and pollen tube growth. Here we report the identification and possible role of some of these ATPases from wheat.

    Results: In this study, ACA and ECA sequences of six species (belonging to Poaceae) were retrieved from different databases and a phylogenetic tree was constructed. Read More

    Efficient preparation of Arabidopsis pollen tubes for ultrastructural analysis using chemical and cryo-fixation.
    BMC Plant Biol 2017 Oct 27;17(1):176. Epub 2017 Oct 27.
    Department of Plant and Microbial Biology & Zurich-Basel Plant Science Center, University of Zurich, 8008, Zurich, Switzerland.
    Background: The pollen tube (PT) serves as a model system for investigating plant cell growth and morphogenesis. Ultrastructural studies are indispensable to complement data from physiological and genetic analyses, yet an effective method is lacking for PTs of the model plant Arabidopsis thaliana.

    Methods: Here, we present reliable approaches for ultrastructural studies of Arabidopsis PTs, as well as an efficient technique for immunogold detection of cell wall epitopes. Read More

    Comparative transcriptomic analyses of normal and malformed flowers in sugar apple (Annona squamosa L.) to identify the differential expressed genes between normal and malformed flowers.
    BMC Plant Biol 2017 Oct 23;17(1):170. Epub 2017 Oct 23.
    Life Science and Technology School, Lingnan Normal University, Zhanjiang, Guangdong, 524048, People's Republic of China.
    Background: Sugar apple (Annona squamosa L.), a popular fruit with high medicinal and nutritional properties, is widely cultivated in tropical South Asia and America. The malformed flower is a major cause for a reduction in production of sugar apple. Read More

    Husk to caryopsis adhesion in barley is influenced by pre- and post-anthesis temperatures through changes in a cuticular cementing layer on the caryopsis.
    BMC Plant Biol 2017 Oct 23;17(1):169. Epub 2017 Oct 23.
    Scotland's Rural College, King's Buildings, West Mains Road, EH9 3JG, Edinburgh, Scotland.
    Background: At ripeness, the outer husk of "covered" barley grains firmly adheres to the underlying caryopsis. A cuticular cementing layer on the caryopsis is required for husk adhesion, however the quality of adhesion varies significantly among cultivars which produce the cementing layer, resulting in the economically important malting defect, grain skinning. The composition of the cementing layer, and grain organ development have been hypothesised to influence the quality of husk adhesion. Read More

    In vivo phosphoproteome characterization reveals key starch granule-binding phosphoproteins involved in wheat water-deficit response.
    BMC Plant Biol 2017 Oct 23;17(1):168. Epub 2017 Oct 23.
    College of Life Science, Capital Normal University, Xisanhuan Beilu No. 105, 100048, Beijing, People's Republic of China.
    Background: Drought stress during grain development causes significant yield loss in cereal production. The phosphorylated modification of starch granule-binding proteins (SGBPs) is an important mechanism regulating wheat starch biosynthesis. In this study, we performed the first proteomics and phosphoproteomics analyses of SGBPs in elite Chinese bread wheat (Triticum aestivum L. Read More

    Different genetic architectures underlie crop responses to the same pathogen: the {Helianthus annuus * Phoma macdonaldii} interaction case for black stem disease and premature ripening.
    BMC Plant Biol 2017 Oct 19;17(1):167. Epub 2017 Oct 19.
    Terres Inovia, UMR 1248 AGIR, BP52627, F-31326, Castanet-Tolosan, France.
    Background: Phoma macdonaldii has been reported as the causal agent of black stem disease (BS) and premature ripening (PR) on sunflower. PR is considered as the most widespread and detrimental disease on sunflower in France. While genetic variability and QTL mapping for partial resistance of sunflower to stem, collar and roots attacks have been reported on plantlets in controlled conditions, this work aims to describe the genetic variability in a subset of a sunflower lines, and for the first time to map QTL involved in PR resistance evaluated in field conditions using controlled inoculation. Read More

    Constitutive expression of OsDof4, encoding a C2-C2 zinc finger transcription factor, confesses its distinct flowering effects under long- and short-day photoperiods in rice (Oryza sativa L.).
    BMC Plant Biol 2017 Oct 19;17(1):166. Epub 2017 Oct 19.
    State Key Laboratory of Plant Genomics and National Center for Plant Gene Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, No.1 West Beichen Road, Chaoyang District, Beijing, 100101, China.
    Background: Dof (DNA binding with one finger) proteins, a class of plant-specific transcription factors which contain a conserved C2-C2-type zinc finger domain, are involved in many fundamental processes. In the Arabidopsis photoperiod response pathway, CDF (CYCLING DOF FACTOR) proteins have a primary role as acting via transcriptional repression of the direct FLOWERING LOCUS T (FT) activator CONSTANS (CO). Our previous study indicated that one of CDF homologs, OsDOf12, was involved in photoperiodic flowering. Read More

    TaFlo2-A1, an ortholog of rice Flo2, is associated with thousand grain weight in bread wheat (Triticum aestivum L.).
    BMC Plant Biol 2017 Oct 16;17(1):164. Epub 2017 Oct 16.
    State Key Laboratory of Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, 1 West Beichen Road, Chaoyang District, Beijing, 100101, China.
    Background: The Flo2 gene is a member of a conserved gene family in plants. This gene has been found to be related to thousand grain weight (TGW) in rice. Its orthologs in hexaploid wheat were cloned, and the haplotype variation in TaFlo2-A1 was tested for association with TGW. Read More

    Lipidomics analysis unravels the effect of nitrogen fertilization on lipid metabolism in tea plant (Camellia sinensis L.).
    BMC Plant Biol 2017 Oct 16;17(1):165. Epub 2017 Oct 16.
    Key Laboratory of Tea Plant Biology and Resources Utilization (Ministry of Agriculture), Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou, 310008, China.
    Background: Nitrogen (N) plays an important role in the formation of tea quality-related compounds, like amino acids and flavor/aroma origin compounds. Lipids, which have been reported to be affected by N deficiency, are precursors to the generation of flavor/aroma origin compounds in tea plant. However, there is no literature about the lipid profiles of tea plant affected by N fertilization. Read More

    Genome-wide trait-trait dynamics correlation study dissects the gene regulation pattern in maize kernels.
    BMC Plant Biol 2017 Oct 16;17(1):163. Epub 2017 Oct 16.
    School of Biological and Science Technology, University of Jinan, Jinan, 250022, China.
    Background: Dissecting the genetic basis and regulatory mechanisms for the biosynthesis and accumulation of nutrients in maize could lead to the improved nutritional quality of this crop. Gene expression is regulated at the genomic, transcriptional, and post-transcriptional levels, all of which can produce diversity among traits. However, the expression of most genes connected with a particular trait usually does not have a direct association with the variation of that trait. Read More

    Hydrogen peroxide is involved in hydrogen sulfide-induced lateral root formation in tomato seedlings.
    BMC Plant Biol 2017 Oct 13;17(1):162. Epub 2017 Oct 13.
    College of Sciences, Nanjing Agricultural University, Nanjing, 210095, China.
    Background: Both hydrogen sulfide (H2S) and hydrogen peroxide (H2O2) are separately regarded as a highly reactive molecule involved in root morphogenesis. In this report, corresponding causal link governing lateral root formation was investigated.

    Methods: By using pharmacological, anatomic, and molecular approaches, evidence presented here revealed the molecular mechanism underlying tomato lateral root development triggered by H2S. Read More

    Maize RNA PolIV affects the expression of genes with nearby TE insertions and has a genome-wide repressive impact on transcription.
    BMC Plant Biol 2017 Oct 12;17(1):161. Epub 2017 Oct 12.
    Department of Agronomy, Food, Natural resources, Animals and Environment, University of Padova, Viale dell'Università 16, 35020, Legnaro, PD, Italy.
    Background: RNA-directed DNA methylation (RdDM) is a plant-specific epigenetic process that relies on the RNA polymerase IV (Pol IV) for the production of 24 nucleotide small interfering RNAs (siRNA) that guide the cytosine methylation and silencing of genes and transposons. Zea mays RPD1/RMR6 gene encodes the largest subunit of Pol IV and is required for normal plant development, paramutation, transcriptional repression of certain transposable elements (TEs) and transcriptional regulation of specific alleles.

    Results: In this study we applied a total RNA-Seq approach to compare the B73 and rpd1/rmr6 leaf transcriptomes. Read More

    Four terpene synthases contribute to the generation of chemotypes in tea tree (Melaleuca alternifolia).
    BMC Plant Biol 2017 Oct 4;17(1):160. Epub 2017 Oct 4.
    Division of Ecology and Evolution, Research School of Biology, The Australian National University, Canberra, 2601, Australia.
    Background: Terpene rich leaves are a characteristic of Myrtaceae. There is significant qualitative variation in the terpene profile of plants within a single species, which is observable as "chemotypes". Understanding the molecular basis of chemotypic variation will help explain how such variation is maintained in natural populations as well as allowing focussed breeding for those terpenes sought by industry. Read More

    Avocado fruit maturation and ripening: dynamics of aliphatic acetogenins and lipidomic profiles from mesocarp, idioblasts and seed.
    BMC Plant Biol 2017 Sep 29;17(1):159. Epub 2017 Sep 29.
    Escuela de Ingeniería y Ciencias, Campus Monterrey, Tecnologico de Monterrey, Monterrey, Nuevo Leon, Mexico.
    Background: Avocado fruit contains aliphatic acetogenins (oft-acetylated, odd-chain fatty alcohols) with promising bioactivities for both medical and food industries. However, we have scarce knowledge about their metabolism. The present work aimed to study changes in acetogenin profiles from mesocarp, lipid-containing idioblasts, and seeds from 'Hass' cultivar during fruit development, germination, and three harvesting years. Read More

    Leaves play a central role in the adaptation of nitrogen and sulfur metabolism to ammonium nutrition in oilseed rape (Brassica napus).
    BMC Plant Biol 2017 Sep 20;17(1):157. Epub 2017 Sep 20.
    Department of Plant Biology and Ecology, University of the Basque Country (UPV/EHU), Apdo. 644, E-48080, Bilbao, Spain.
    Background: The coordination between nitrogen (N) and sulfur (S) assimilation is required to suitably provide plants with organic compounds essential for their development and growth. The N source induces the adaptation of many metabolic processes in plants; however, there is scarce information about the influence that it may exert on the functioning of S metabolism. The aim of this work was to provide an overview of N and S metabolism in oilseed rape (Brassica napus) when exposed to different N sources. Read More

    Diversity, distribution of Puroindoline genes and their effect on kernel hardness in a diverse panel of Chinese wheat germplasm.
    BMC Plant Biol 2017 Sep 20;17(1):158. Epub 2017 Sep 20.
    State Key Laboratory of Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, 1 West Beichen Road, Chaoyang District, Beijing, 100101, China.
    Background: Kernel hardness, which has great influence on the end-use properties of common wheat, is mainly controlled by Puroindoline genes, Pina and Pinb. Using EcoTILLING platform, we herein investigated the allelic variations of Pina and Pinb genes and their association with the Single Kernel Characterization System (SKCS) hardness index in a diverse panel of wheat germplasm.

    Results: The kernel hardness varied from 1. Read More

    B-BOX genes: genome-wide identification, evolution and their contribution to pollen growth in pear (Pyrus bretschneideri Rehd.).
    BMC Plant Biol 2017 Sep 19;17(1):156. Epub 2017 Sep 19.
    School of Life Sciences, Anhui Agricultural University, Hefei, 230036, China.
    Background: The B-BOX (BBX) proteins have important functions in regulating plant growth and development. In plants, the BBX gene family has been identified in several plants, such as rice, Arabidopsis and tomato. However, there still lack a genome-wide survey of BBX genes in pear. Read More

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