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BMC Plant Biology

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https://www.readbyqxmd.com/read/27905870/transcriptomic-and-proteomic-approach-to-identify-differentially-expressed-genes-and-proteins-in-arabidopsis-thaliana-mutants-lacking-chloroplastic-1-and-cytosolic-fbpases-reveals-several-levels-of-metabolic-regulation
#1
Mauricio Soto-Suárez, Antonio J Serrato, José A Rojas-González, Rocío Bautista, Mariam Sahrawy
BACKGROUND: During the photosynthesis, two isoforms of the fructose-1,6-bisphosphatase (FBPase), the chloroplastidial (cFBP1) and the cytosolic (cyFBP), catalyse the first irreversible step during the conversion of triose phosphates (TP) to starch or sucrose, respectively. Deficiency in cyFBP and cFBP1 isoforms provokes an imbalance of the starch/sucrose ratio, causing a dramatic effect on plant development when the plastidial enzyme is lacking. RESULTS: We study the correlation between the transcriptome and proteome profile in rosettes and roots when cFBP1 or cyFBP genes are disrupted in Arabidopsis thaliana knock-out mutants...
December 1, 2016: BMC Plant Biology
https://www.readbyqxmd.com/read/27903241/abundant-rna-editing-sites-of-chloroplast-protein-coding-genes-in-ginkgo-biloba-and-an-evolutionary-pattern-analysis
#2
Peng He, Sheng Huang, Guanghui Xiao, Yuzhou Zhang, Jianing Yu
BACKGROUND: RNA editing is a posttranscriptional modification process that alters the RNA sequence so that it deviates from the genomic DNA sequence. RNA editing mainly occurs in chloroplasts and mitochondrial genomes, and the number of editing sites varies in terrestrial plants. Why and how RNA editing systems evolved remains a mystery. Ginkgo biloba is one of the oldest seed plants and has an important evolutionary position. Determining the patterns and distribution of RNA editing in the ancient plant provides insights into the evolutionary trend of RNA editing, and helping us to further understand their biological significance...
December 1, 2016: BMC Plant Biology
https://www.readbyqxmd.com/read/27871243/osacos12-an-orthologue-of-arabidopsis-acyl-coa-synthetase5-plays-an-important-role-in-pollen-exine-formation-and-anther-development-in-rice
#3
Yueling Li, Dandan Li, Zongli Guo, Qiangsheng Shi, Shuangxi Xiong, Cheng Zhang, Jun Zhu, Zhongnan Yang
BACKGROUND: Sporopollenin is a major component of the pollen exine pattern. In Arabidopsis, acyl-CoA synthetase5 (ACOS5) is involved in sporopollenin precursor biosynthesis. In this study, we identified its orthologue, OsACOS12, in rice (Oryza sativa) and compared the functional conservation of ACOS in rice to Arabidopsis. RESULTS: Sequence analysis showed that OsACOS12 shares 63.9 % amino acid sequence identity with ACOS5. The osacos12 mutation caused by a pre-mature stop codon in LOC_Os04g24530 exhibits defective sexine resulting in a male sterile phenotype in rice...
November 21, 2016: BMC Plant Biology
https://www.readbyqxmd.com/read/27863470/transcript-profiling-for-early-stages-during-embryo-development-in-scots-pine
#4
Irene Merino, Malin Abrahamsson, Lieven Sterck, Blanca Craven-Bartle, Francisco Canovas, Sara von Arnold
BACKGROUND: Characterization of the expression and function of genes regulating embryo development in conifers is interesting from an evolutionary point of view. However, our knowledge about the regulation of embryo development in conifers is limited. During early embryo development in Pinus species the proembyo goes through a cleavage process, named cleavage polyembryony, giving rise to four embryos. One of these embryos develops to a dominant embryo, which will develop further into a mature, cotyledonary embryo, while the other embryos, the subordinate embryos, are degraded...
November 18, 2016: BMC Plant Biology
https://www.readbyqxmd.com/read/27846795/quantitative-modelling-of-legume-root-nodule-primordium-induction-by-a-diffusive-signal-of-epidermal-origin-that-inhibits-auxin-efflux
#5
Eva E Deinum, Wouter Kohlen, René Geurts
BACKGROUND: Rhizobium nitrogen fixation in legumes takes place in specialized organs called root nodules. The initiation of these symbiotic organs has two important components. First, symbiotic rhizobium bacteria are recognized at the epidermis through specific bacterially secreted lipo-chitooligosaccharides (LCOs). Second, signaling processes culminate in the formation of a local auxin maximum marking the site of cell divisions. Both processes are spatially separated. This separation is most pronounced in legumes forming indeterminate nodules, such as model organism Medicago truncatula, in which the nodule primordium is formed from pericycle to most inner cortical cell layers...
November 15, 2016: BMC Plant Biology
https://www.readbyqxmd.com/read/27842501/analysis-of-transcriptional-response-to-heat-stress-in-rhazya-stricta
#6
Abdullah Y Obaid, Jamal S M Sabir, Ahmed Atef, Xuan Liu, Sherif Edris, Fotouh M El-Domyati, Mohammed Z Mutwakil, Nour O Gadalla, Nahid H Hajrah, Magdy A Al-Kordy, Neil Hall, Ahmed Bahieldin, Robert K Jansen
BACKGROUND: Climate change is predicted to be a serious threat to agriculture due to the need for crops to be able to tolerate increased heat stress. Desert plants have already adapted to high levels of heat stress so they make excellent systems for identifying genes involved in thermotolerance. Rhazya stricta is an evergreen shrub that is native to extremely hot regions across Western and South Asia, making it an excellent system for examining plant responses to heat stress. Transcriptomes of apical and mature leaves of R...
November 14, 2016: BMC Plant Biology
https://www.readbyqxmd.com/read/27842496/proteomics-analysis-reveals-novel-host-molecular-mechanisms-associated-with-thermotherapy-of-ca-liberibacter-asiaticus-infected-citrus-plants
#7
Chika C Nwugo, Melissa S Doud, Yong-Ping Duan, Hong Lin
BACKGROUND: Citrus Huanglongbing (HLB), which is linked to the bacterial pathogen 'Ca. Liberibacter asiaticus' (Las), is the most devastating disease of citrus plants, and longer-term control measures via breeding or genetic engineering have been unwieldy because all cultivated citrus species are susceptible to the disease. However, the degree of susceptibility varies among citrus species, which has prompted efforts to identify potential Las resistance/tolerance-related genes in citrus plants for application in breeding or genetic engineering programs...
November 14, 2016: BMC Plant Biology
https://www.readbyqxmd.com/read/27835985/hypoxia-response-in-arabidopsis-roots-infected-by-plasmodiophora-brassicae-supports-the-development-of-clubroot
#8
Antoine Gravot, Gautier Richard, Tanguy Lime, Séverine Lemarié, Mélanie Jubault, Christine Lariagon, Jocelyne Lemoine, Jorge Vicente, Alexandre Robert-Seilaniantz, Michael J Holdsworth, Maria J Manzanares-Dauleux
BACKGROUND: The induction of alcohol fermentation in roots is a plant adaptive response to flooding stress and oxygen deprivation. Available transcriptomic data suggest that fermentation-related genes are also frequently induced in roots infected with gall forming pathogens, but the biological significance of this induction is unclear. In this study, we addressed the role of hypoxia responses in Arabidopsis roots during infection by the clubroot agent Plasmodiophora brassicae. RESULTS: The hypoxia-related gene markers PYRUVATE DECARBOXYLASE 1 (PDC1), PYRUVATE DECARBOXYLASE 2 (PDC2) and ALCOHOL DEHYDROGENASE 1 (ADH1) were induced during secondary infection by two isolates of P...
November 11, 2016: BMC Plant Biology
https://www.readbyqxmd.com/read/27832742/comparative-transcriptome-profiling-of-the-fertile-and-sterile-flower-buds-of-a-dominant-genic-male-sterile-line-in-sesame-sesamum-indicum-l
#9
Hongyan Liu, Mingpu Tan, Haijuan Yu, Liang Li, Fang Zhou, Minmin Yang, Ting Zhou, Yingzhong Zhao
BACKGROUND: Sesame (Sesamum indicum L.) is a globally important oilseed crop with highly-valued oil. Strong hybrid vigor is frequently observed within this crop, which can be exploited by the means of genic male sterility (GMS). We have previously developed a dominant GMS (DGMS) line W1098A that has great potential for the breeding of F1 hybrids. Although it has been genetically and anatomically characterized, the underlying molecular mechanism for male sterility remains unclear and therefore limits the full utilization of such GMS line...
November 10, 2016: BMC Plant Biology
https://www.readbyqxmd.com/read/27829377/range-wide-phenotypic-and-genetic-differentiation-in-wild-sunflower
#10
Edward V McAssey, Jonathan Corbi, John M Burke
BACKGROUND: Divergent phenotypes and genotypes are key signals for identifying the targets of natural selection in locally adapted populations. Here, we used a combination of common garden phenotyping for a variety of growth, plant architecture, and seed traits, along with single-nucleotide polymorphism (SNP) genotyping to characterize range-wide patterns of diversity in 15 populations of wild sunflower (Helianthus annuus L.) sampled along a latitudinal gradient in central North America...
November 10, 2016: BMC Plant Biology
https://www.readbyqxmd.com/read/27829376/the-fifth-leaf-and-spike-organs-of-barley-hordeum-vulgare-l-display-different-physiological-and-metabolic-responses-to-drought-stress
#11
Jordan A Hein, Mark E Sherrard, Kirk P Manfredi, Tilahun Abebe
BACKGROUND: Photosynthetic organs of the cereal spike (ear) provide assimilate for grain filling, but their response to drought is poorly understood. In this study, we characterized the drought response of individual organs of the barley spike (awn, lemma, and palea) and compared them with a vegetative organ (fifth leaf). Understanding differences in physiological and metabolic responses between the leaf and spike organs during drought can help us develop high yielding cultivars for environments where terminal drought is prevalent...
November 9, 2016: BMC Plant Biology
https://www.readbyqxmd.com/read/27829370/drought-stress-in-maize-causes-differential-acclimation-responses-of-glutathione-and-sulfur-metabolism-in-leaves-and-roots
#12
Nisar Ahmad, Mario Malagoli, Markus Wirtz, Ruediger Hell
BACKGROUND: Drought is the most important environmental stress that limits crop yield in a global warming world. Despite the compelling evidence of an important role of oxidized and reduced sulfur-containing compounds during the response of plants to drought stress (e.g. sulfate for stomata closure or glutathione for scavenging of reactive oxygen species), the assimilatory sulfate reduction pathway is almost not investigated at the molecular or at the whole plant level during drought...
November 9, 2016: BMC Plant Biology
https://www.readbyqxmd.com/read/27814672/identification-by-the-dartseq-method-of-the-genetic-origin-of-the-coffea-canephora-cultivated-in-vietnam-and-mexico
#13
Andrea Garavito, Christophe Montagnon, Romain Guyot, Benoît Bertrand
BACKGROUND: The coffee species Coffea canephora is commercially identified as "Conilon" when produced in Brazil, or "Robusta" when produced elsewhere in the world. It represents approximately 40 % of coffee production worldwide. While the genetic diversity of wild C. canephora has been well studied in the past, only few studies have addressed the genetic diversity of currently cultivated varieties around the globe. Vietnam is the largest Robusta producer in the world, while Mexico is the only Latin American country, besides Brazil, that has a significant Robusta production...
November 4, 2016: BMC Plant Biology
https://www.readbyqxmd.com/read/27809774/quantitative-trait-variation-is-revealed-in-a-novel-hypomethylated-population-of-woodland-strawberry-fragaria-vesca
#14
Jihua Xu, Karen K Tanino, Kyla N Horner, Stephen J Robinson
BACKGROUND: Phenotypic variation is determined by a combination of genotype, environment and their interactions. The realization that allelic diversity can be both genetic and epigenetic allows the environmental component to be further separated. Partitioning phenotypic variation observed among inbred lines with an altered epigenome can allow the epigenetic component controlling quantitative traits to be estimated. To assess the contribution of epialleles on phenotypic variation and determine the fidelity with which epialleles are inherited, we have developed a novel hypomethylated population of strawberry (2n = 2x = 14) using 5-azacytidine from which individuals with altered phenotypes can be identified, selected and characterized...
November 4, 2016: BMC Plant Biology
https://www.readbyqxmd.com/read/27809771/proteomic-analysis-of-maize-grain-development-using-itraq-reveals-temporal-programs-of-diverse-metabolic-processes
#15
Tao Yu, Geng Li, Shuting Dong, Peng Liu, Jiwang Zhang, Bin Zhao
BACKGROUND: Grain development in maize is an essential process in the plant's life cycle and is vital for use of the plant as a crop for animals and humans. However, little is known regarding the protein regulatory networks that control grain development. Here, isobaric tag for relative and absolute quantification (iTRAQ) technology was used to analyze temporal changes in protein expression during maize grain development. RESULTS: Maize grain proteins and changes in protein expression at eight developmental stages from 3 to 50 d after pollination (DAP) were performed using iTRAQ-based proteomics...
November 4, 2016: BMC Plant Biology
https://www.readbyqxmd.com/read/27809780/dual-functions-of-the-zmcct-associated-quantitative-trait-locus-in-flowering-and-stress-responses-under-long-day-conditions
#16
Lixia Ku, Lei Tian, Huihui Su, Cuiling Wang, Xiaobo Wang, Liuji Wu, Yong Shi, Guohui Li, Zhiyong Wang, Huitao Wang, Xiaoheng Song, Dandan Dou, Zhaobin Ren, Yanhui Chen
BACKGROUND: Photoperiodism refers to the ability of plants to measure day length to determine the season. This ability enables plants to coordinate internal biological activities with external changes to ensure normal growth. However, the influence of the photoperiod on maize flowering and stress responses under long-day (LD) conditions has not been analyzed by comparative transcriptome sequencing. The ZmCCT gene was previously identified as a homolog of the rice photoperiod response regulator Ghd7, and associated with the major quantitative trait locus (QTL) responsible for Gibberella stalk rot resistance in maize...
November 3, 2016: BMC Plant Biology
https://www.readbyqxmd.com/read/27793102/resequencing-of-capsicum-annuum-parental-lines-ycm334-and-taean-for-the-genetic-analysis-of-bacterial-wilt-resistance
#17
Yang Jae Kang, Yul-Kyun Ahn, Ki-Taek Kim, Tae-Hwan Jun
BACKGROUND: Bacterial wilt (BW) is a widespread plant disease that affects a broad range of dicot and monocot hosts and is particularly harmful for solanaceous plants, such as pepper, tomato, and eggplant. The pathogen responsible for BW is the soil-borne bacterium, Ralstonia solanacearum, which can adapt to diverse temperature conditions and is found in climates ranging from tropical to temperate. Resistance to BW has been detected in some pepper plant lines; however, the genomic loci and alleles that mediate this are poorly studied in this species...
October 28, 2016: BMC Plant Biology
https://www.readbyqxmd.com/read/27793088/regulation-of-polar-auxin-transport-in-grapevine-fruitlets-vitis-vinifera-l-and-the-proposed-role-of-auxin-homeostasis-during-fruit-abscission
#18
Nathalie Kühn, Alejandra Serrano, Carlos Abello, Aníbal Arce, Carmen Espinoza, Satyanarayana Gouthu, Laurent Deluc, Patricio Arce-Johnson
BACKGROUND: Indole-3-acetic acid (IAA), the most abundant auxin, is a growth promoter hormone involved in several developmental processes. Auxin homeostasis is very important to its function and this is achieved through the regulation of IAA biosynthesis, conjugation, degradation and transport. In grapevine, IAA plays an essential role during initial stages of berry development, since it delays fruitlet abscission by reducing the ethylene sensitivity in the abscission zone. For this reason, Continuous polar IAA transport to the pedicel is required...
October 28, 2016: BMC Plant Biology
https://www.readbyqxmd.com/read/27782807/damps-mamps-and-namps-in-plant-innate-immunity
#19
REVIEW
Hyong Woo Choi, Daniel F Klessig
BACKGROUND: Multicellular organisms have evolved systems/mechanisms to detect various forms of danger, including attack by microbial pathogens and a variety of pests, as well as tissue and cellular damage. Detection via cell-surface receptors activates an ancient and evolutionarily conserved innate immune system. RESULT: Potentially harmful microorganisms are recognized by the presence of molecules or parts of molecules that have structures or chemical patterns unique to microbes and thus are perceived as non-self/foreign...
October 26, 2016: BMC Plant Biology
https://www.readbyqxmd.com/read/27782806/flavonoids-and-darkness-lower-pcd-in-senescing-vitis-vinifera-suspension-cell-cultures
#20
Alberto Bertolini, Elisa Petrussa, Sonia Patui, Marco Zancani, Carlo Peresson, Valentino Casolo, Angelo Vianello, Enrico Braidot
BACKGROUND: Senescence is a key developmental process occurring during the life cycle of plants that can be induced also by environmental conditions, such as starvation and/or darkness. During senescence, strict control of genes regulates ordered degradation and dismantling events, the most remarkable of which are genetically programmed cell death (PCD) and, in most cases, an upregulation of flavonoid biosynthesis in the presence of light. Flavonoids are secondary metabolites that play multiple essential roles in development, reproduction and defence of plants, partly due to their well-known antioxidant properties, which could affect also the same cell death machinery...
October 26, 2016: BMC Plant Biology
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