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https://www.readbyqxmd.com/read/28212614/transcriptomic-profiling-provides-molecular-insights-into-hydrogen-peroxide-induced-adventitious-rooting-in-mung-bean-seedlings
#1
Shi-Weng Li, Yan Leng, Rui-Fang Shi
BACKGROUND: Hydrogen peroxide (H2O2) has been known to function as a signalling molecule involved in the modulation of various physiological processes in plants. H2O2 has been shown to act as a promoter during adventitious root formation in hypocotyl cuttings. In this study, RNA-Seq was performed to reveal the molecular mechanisms underlying H2O2-induced adventitious rooting. RESULTS: RNA-Seq data revealed that H2O2 treatment greatly increased the numbers of clean reads and expressed genes and abundance of gene expression relative to the water treatment...
February 17, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28197155/dissecting-the-biochemical-and-transcriptomic-effects-of-a-locally-applied-heat-treatment-on-developing-cabernet-sauvignon-grape-berries
#2
Fatma Lecourieux, Christian Kappel, Philippe Pieri, Justine Charon, Jérémy Pillet, Ghislaine Hilbert, Christel Renaud, Eric Gomès, Serge Delrot, David Lecourieux
Reproductive development of grapevine and berry composition are both strongly influenced by temperature. To date, the molecular mechanisms involved in grapevine berries response to high temperatures are poorly understood. Unlike recent data that addressed the effects on berry development of elevated temperatures applied at the whole plant level, the present work particularly focuses on the fruit responses triggered by direct exposure to heat treatment (HT). In the context of climate change, this work focusing on temperature effect at the microclimate level is of particular interest as it can help to better understand the consequences of leaf removal (a common viticultural practice) on berry development...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28190387/engineering-crops-for-future-a-phosphoproteomics-approach
#3
Vinay Kumar, Tushar Khare, Mansi Sharma, Shabir Hussain Wani
Abiotic stresses like salinity, drought, heat, metal, radiation and oxidative stress, and especially their combinations are major limiting factors for growth and productivity of the crops. Various molecular and biochemical processes governing the plant responses to abiotic stresses have often been investigated and hold the key for producing high-yielding and abiotic stress-tolerant crops. Plant responses to abiotic stresses are dynamic and intricate, and vary with type, level, and duration of the stress involved, as well as on the type of tissue under stress...
February 9, 2017: Current Protein & Peptide Science
https://www.readbyqxmd.com/read/28188666/natural-variation-for-gene-expression-responses-to-abiotic-stress-in-maize
#4
Amanda J Waters, Irina Makarevitch, Jaclyn Noshay, Liana T Burghardt, Candice N Hirsch, Cory D Hirsch, Nathan M Springer
Plants respond to abiotic stress through a variety of physiological, biochemical, and transcriptional mechanisms. Many genes exhibit altered levels of expression in response to abiotic stress, which requires concerted action of both cis- and trans-regulatory features. In order to study the variability in transcriptome response to abiotic stress, RNA sequencing was performed using 14-day-old maize seedlings of inbreds B73, Mo17, Oh43, PH207 and B37 under control, cold and heat conditions. Large numbers of genes that responded differentially to stress between parental inbred lines were identified...
November 7, 2016: Plant Journal: for Cell and Molecular Biology
https://www.readbyqxmd.com/read/28187136/candidate-genes-and-molecular-markers-associated-with-heat-tolerance-in-colonial-bentgrass
#5
David Jespersen, Faith C Belanger, Bingru Huang
Elevated temperature is a major abiotic stress limiting the growth of cool-season grasses during the summer months. The objectives of this study were to determine the genetic variation in the expression patterns of selected genes involved in several major metabolic pathways regulating heat tolerance for two genotypes contrasting in heat tolerance to confirm their status as potential candidate genes, and to identify PCR-based markers associated with candidate genes related to heat tolerance in a colonial (Agrostis capillaris L...
2017: PloS One
https://www.readbyqxmd.com/read/28178571/genome-wide-identification-and-analysis-of-biotic-and-abiotic-stress-regulation-of-small-heat-shock-protein-hsp20-family-genes-in-bread-wheat
#6
Senthilkumar K Muthusamy, Monika Dalal, Viswanathan Chinnusamy, Kailash C Bansal
Small Heat Shock Proteins (sHSPs)/HSP20 are molecular chaperones that protect plants by preventing protein aggregation during abiotic stress conditions, especially heat stress. Due to global climate change, high temperature is emerging as a major threat to wheat productivity. Thus, the identification of HSP20 and analysis of HSP transcriptional regulation under different abiotic stresses in wheat would help in understanding the role of these proteins in abiotic stress tolerance. We used sequences of known rice and Arabidopsis HSP20 HMM profiles as queries against publicly available wheat genome and wheat full length cDNA databases (TriFLDB) to identify the respective orthologues from wheat...
January 22, 2017: Journal of Plant Physiology
https://www.readbyqxmd.com/read/28174587/integrating-small-rna-sequencing-with-qtl-mapping-for-identification-of-mirnas-and-their-target-genes-associated-with-heat-tolerance-at-the-flowering-stage-in-rice
#7
Qing Liu, Tifeng Yang, Ting Yu, Shaohong Zhang, Xingxue Mao, Junliang Zhao, Xiaofei Wang, Jingfang Dong, Bin Liu
Although, microRNAs (miRNAs) have been reported to be associated with heat tolerance at the seedling stage in rice, their involvement in heat tolerance at the flowering stage is still unknown. In this study, small RNA profiling was conducted in a heat-tolerant variety Gan-Xiang-Nuo (GXN) and a heat-sensitive variety Hua-Jing-Xian-74 (HJX), respectively. Totally, 102 miRNAs were differentially expressed (DE) under heat stress. Compared to HJX, GXN had more DE miRNAs and its DE miRNAs changed earlier under heat stress...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28174579/overexpression-of-mpcys4-a-phytocystatin-gene-from-malus-prunifolia-willd-borkh-enhances-stomatal-closure-to-confer-drought-tolerance-in-transgenic-arabidopsis-and-apple
#8
Yanxiao Tan, Mingjun Li, Yingli Yang, Xun Sun, Na Wang, Bowen Liang, Fengwang Ma
Phytocystatins (PhyCys) comprise a group of inhibitors for cysteine proteinases in plants. They play a wide range of important roles in regulating endogenous processes and protecting plants against various environmental stresses, but the underlying mechanisms remain largely unknown. Here, we detailed the biological functions of MpCYS4, a member of cystatin genes isolated from Malus prunifolia. This gene was activated under water deficit, heat (40°C), exogenous abscisic acid (ABA), or methyl viologen (MV) (Tan et al...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28167040/induction-of-cyclic-electron-flow-around-photosystem-i-during-heat-stress-in-grape-leaves
#9
Yongjiang Sun, Qingwei Geng, Yuanpeng Du, Xinghong Yang, Heng Zhai
Photosystem II (PSII) in plants is susceptible to high temperatures. The cyclic electron flow (CEF) around PSI is thought to protect both PSII and PSI from photodamage. However, the underlying physiological mechanisms of the photosynthetic electron transport process and the role of CEF in grape at high temperatures remain unclear. To investigate this issue, we examined the responses of PSII energy distribution, the P700 redox state and CEF to high temperatures in grape leaves. After exposing 'Cabernet Sauvignon' leaves to various temperatures (25, 30, 35, 40 and 45°C) in the light (600μmol photons m(-2)s(-1)) for 4h, the maximum quantum yield of PSII (Fv/Fm) significantly decreased at high temperatures (40 and 45°C), while the maximum photo-oxidizable P700 (Pm) was not affected...
March 2017: Plant Science: An International Journal of Experimental Plant Biology
https://www.readbyqxmd.com/read/28164334/ethylene-response-factor-74-erf74-plays-an-essential-role-in-controlling-a-respiratory-burst-oxidase-homolog-d-rbohd-dependent-mechanism-in-response-to-different-stresses-in-arabidopsis
#10
Yuan Yao, Run Jun He, Qiao Li Xie, Xian Hai Zhao, Xiao Mei Deng, Jun Bo He, Lili Song, Jun He, Alan Marchant, Xiao-Yang Chen, Ai-Min Wu
Recent studies indicate that the ETHYLENE RESPONSE FACTOR VII (ERF-VII) transcription factor is an important regulator of osmotic and hypoxic stress responses in plants. However, the molecular mechanism of ERF-VII-mediated transcriptional regulation remains unclear. Here, we investigated the role of ERF74 (a member of the ERF-VII protein family) by examining the abiotic stress tolerance of an ERF74 overexpression line and a T-DNA insertion mutant using flow cytometry, transactivation and electrophoretic mobility shift assays...
March 2017: New Phytologist
https://www.readbyqxmd.com/read/28155114/over-expression-of-slja2-decreased-heat-tolerance-of-transgenic-tobacco-plants-via-salicylic-acid-pathway
#11
Zhong-Ming Liu, Meng-Meng Yue, Dong-Yue Yang, Shao-Bo Zhu, Na-Na Ma, Qing-Wei Meng
Over-expression of SlJA2 decreased the accumulation of SA, which resulted in significant physiological and gene expression changes in transgenic tobacco plants, leading to the decreased heat tolerance of transgenic tobacco. NAC family, the largest transcription factors in plants, responses to different environmental stimuli. Here, we isolated a typical NAC transcription factor (SlJA2) from tomato and got transgenic tobacco with SlJA2 over-expression. Expression of SlJA2 was induced by heat stress (42 °C), chilling stress (4 °C), drought stress, osmotic stress, abscisic acid, and salicylic acid...
February 2, 2017: Plant Cell Reports
https://www.readbyqxmd.com/read/28154243/plant-immune-system-crosstalk-between-responses-to-biotic-and-abiotic-stresses-the-missing-link-in-understanding-plant-defence
#12
Naghmeh Nejat, Nitin Mantri
Environmental pollution, global warming and climate change exacerbate the impact of biotic and abiotic stresses on plant growth and yield. Plants have evolved sophisticated defence network, also called innate immune system, in response to ever- changing environmental conditions. Significant progress has been made in identifying the key stress-inducible genes associated with defence response to single stressors. However, relatively little information is available on the signaling crosstalk in response to combined biotic/abiotic stresses...
February 3, 2017: Current Issues in Molecular Biology
https://www.readbyqxmd.com/read/28152098/genome-wide-association-analysis-for-heat-tolerance-at-flowering-detected-a-large-set-of-genes-involved-in-adaptation-to-thermal-and-other-stresses
#13
Tanguy Lafarge, Crisanta Bueno, Julien Frouin, Laval Jacquin, Brigitte Courtois, Nourollah Ahmadi
Fertilization sensitivity to heat in rice is a major issue within climate change scenarios in the tropics. A panel of 167 indica landraces and improved varieties was phenotyped for spikelet sterility (SPKST) under 38°C during anthesis and for several secondary traits potentially affecting panicle micro-climate and thus the fertilization process. The panel was genotyped with an average density of one marker per 29 kb using genotyping by sequencing. Genome-wide association analyses (GWAS) were conducted using three methods based on single marker regression, haplotype regression and simultaneous fitting of all markers, respectively...
2017: PloS One
https://www.readbyqxmd.com/read/28150171/molecular-cloning-and-functional-analysis-of-the-drought-tolerance-gene-mshsp70-from-alfalfa-medicago-sativa-l
#14
Zhenyi Li, Ruicai Long, Tiejun Zhang, Zhen Wang, Fan Zhang, Qingchuan Yang, Junmei Kang, Yan Sun
Heat shock proteins (HSPs) are a ubiquitously expressed class of protective proteins that play a key role in plant response to stressful conditions. This study aimed to characterize and investigate the function of an HSP gene in alfalfa (Medicago sativa). MsHSP70, which contains a 2028-bp open reading frame, was identified through homology cloning. MsHSP70 shares high sequence identity (94.47%) with HSP70 from Medicago truncatula. Expression analysis of MsHSP70 in alfalfa organs revealed a relatively higher expression level in aerial organs such as flowers, stems and leaves than in roots...
February 1, 2017: Journal of Plant Research
https://www.readbyqxmd.com/read/28143399/expansion-and-stress-responses-of-the-ap2-erebp-superfamily-in-cotton
#15
Chunxiao Liu, Tianzhen Zhang
BACKGROUND: The allotetraploid cotton originated from one hybridization event between an extant progenitor of Gosssypium herbaceum (A1) or G. arboreum (A2) and another progenitor, G. raimondii Ulbrich (D5) 1-1.5 million years ago (Mya). The APETALA2/ethylene-responsive element binding protein (AP2/EREBP) transcription factors constitute one of the largest and most conserved gene families in plants. They are characterized by their AP2 domain, which comprises 60-70 amino acids, and are classified into four main subfamilies: the APETALA2 (AP2), Related to ABI3/VP1 (RAV), Dehydration-Responsive Element Binding protein (DREB) and Ethylene-Responsive Factor (ERF) subfamilies...
January 31, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28138902/ectopic-expression-of-plant-rna-chaperone-offering-multiple-stress-tolerance-in-e-coli
#16
Bushra Jabeen, S M Saqlan Naqvi, Tariq Mahmood, Tasawar Sultana, Madiha Arif, Fariha Khan
Members of the plant glycine-rich RNA-binding proteins (GR-RBPs) family have been reported in flowering, development, circadian rhythms, biotic and abiotic stresses. Particularly, GR-RBPs are reported to function as RNA chaperones, promoting growth and acclimation during cold shock. It is indispensable to further question the efficacy and mechanism of GR-RBPs under various environmental strains. Monitoring the expression of stress-regulated proteins under stress conditions has been a beneficial strategy to study their functional roles...
January 30, 2017: Molecular Biotechnology
https://www.readbyqxmd.com/read/28124256/brassinosteroid-action-in-plant-abiotic-stress-tolerance
#17
Priti Krishna, Bishun D Prasad, Tawhidur Rahman
Brassinosteroids (BRs) are a class of plant steroidal hormones that play essential roles in plant growth and development. Systematic studies had first been undertaken concomitantly to determine both the effects of exogenous BR on stress phenotypes of Arabidopsis thaliana and Brassica napus (rapeseed) seedlings and the expression of stress marker genes in BR-treated and untreated seedlings. When reproducible and convincing evidence of the role of BR in stress tolerance had been obtained, molecular mechanisms underlying the ability of BR to confer tolerance against heat, cold, drought, and salt stress, as well as pathogen resistance were studied with several molecular approaches and tools...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28122507/drought-stress-had-a-predominant-effect-over-heat-stress-on-three-tomato-cultivars-subjected-to-combined-stress
#18
Rong Zhou, Xiaqing Yu, Carl-Otto Ottosen, Eva Rosenqvist, Liping Zhao, Yinlei Wang, Wengui Yu, Tongmin Zhao, Zhen Wu
BACKGROUND: Abiotic stresses due to environmental factors could adversely affect the growth and development of crops. Among the abiotic stresses, drought and heat stress are two critical threats to crop growth and sustainable agriculture worldwide. Considering global climate change, incidence of combined drought and heat stress is likely to increase. The aim of this study was to shed light on plant growth performance and leaf physiology of three tomatoes cultivars ('Arvento', 'LA1994' and 'LA2093') under control, drought, heat and combined stress...
January 25, 2017: BMC Plant Biology
https://www.readbyqxmd.com/read/28112571/overexpression-of-oligouridylate-binding-protein-1b-results-in-aba-hypersensitivity
#19
Cam Chau Nguyen, Kentaro Nakaminami, Akihiro Matsui, Shunsuke Watanabe, Yuri Kanno, Mitsunori Seo, Motoaki Seki
Oligouridylate binding protein 1b (UBP1b), a marker protein of plant stress granules (SGs), plays a role in heat stress tolerance in plants. A previous microarray analysis revealed that the expression of several ABA signaling-related genes is higher in UBP1b-overexpressing Arabidopsis plants (UBP1b-ox) subjected to both non-stressed and heat stress conditions. Root elongation and seed germination assays demonstrated that UBP1b-ox exhibited hypersensitivity to ABA. RT-qPCR analysis confirmed that mitogen-activated protein kinase (MAPK) cascade genes, such as MPK3, MKK4, and MKK9 were up-regulated in UBP1b-ox plants...
January 23, 2017: Plant Signaling & Behavior
https://www.readbyqxmd.com/read/28110460/ability-of-rf5-and-rf6-to-restore-fertility-of-chinsurah-boro-ii-type-cytoplasmic-male-sterile-oryza-sativa-ssp-japonica-lines
#20
Honggen Zhang, Jianlan Che, Yongshen Ge, Yan Pei, Lijia Zhang, Qiaoquan Liu, Minghong Gu, Shuzhu Tang
BACKGROUND: Three-line Oryza sativa (ssp. japonica) hybrids have been developed mainly using Chinsurah Boro II (BT)-type cytoplasmic male sterility (CMS). The Rf1 gene restores the fertility of BT-type CMS lines, and is the only fertility restorer gene (Rf) that has been used to produce three-line japonica hybrids. Using more Rf genes to breed BT-type restorer lines may broaden the genetic diversity of the restorer lines, and represents a viable approach to improve the heterosis level of BT-type japonica hybrids...
December 2017: Rice
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