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https://www.readbyqxmd.com/read/28731217/small-rnas-in-regulating-temperature-stress-response-in-plants
#1
Qing Liu, Shijuan Yan, Tifeng Yang, Shaohong Zhang, Yue-Qin Chen, Bin Liu
Due to global climate change, temperature stress has become one of the primary causes of crop losses worldwide. Much progress has been made in unraveling the complex stress response mechanisms in plants, particularly in the identification of temperature stress responsive protein-coding genes. Recently discovered microRNAs (miRNAs) and endogenous small-interfering RNAs (siRNAs) have also been demonstrated as important players in plant temperature stress response. Using high-throughput sequencing, many small RNAs, especially miRNAs, have been identified to be triggered by cold or heat...
July 21, 2017: Journal of Integrative Plant Biology
https://www.readbyqxmd.com/read/28726715/overexpression-of-the-osimp-gene-increases-the-accumulation-of-inositol-and-confers-enhanced-cold-tolerance-in-tobacco-through-modulation-of-the-antioxidant-enzymes-activities
#2
Rong-Xiang Zhang, Li-Jun Qin, De-Gang Zhao
Inositol is a cyclic polyol that is involved in various physiological processes, including signal transduction and stress adaptation in plants. l-myo-inositol monophosphatase (IMPase) is one of the metal-dependent phosphatase family members and catalyzes the last reaction step of biosynthesis of inositol. Although increased IMPase activity induced by abiotic stress has been reported in chickpea plants, the role and regulation of the IMP gene in rice (Oryza sativa L.) remains poorly understood. In the present work, we obtained a full-length cDNA sequence coding IMPase in the cold tolerant rice landraces in Gaogonggui, which is named as OsIMP...
July 20, 2017: Genes
https://www.readbyqxmd.com/read/28724905/flowering-time-in-banana-musa-spp-a-day-neutral-plant-is-controlled-by-at-least-three-flowering-locus-t-homologues
#3
Akhilesh K Chaurasia, Hemant B Patil, Bal Krishna, V R Subramaniam, Prafullachandra V Sane, Aniruddha P Sane
Banana is an important day neutral food crop with a long flowering/fruiting cycle that is affected by hot summers or cold winters in different places. Manipulating its life cycle requires an understanding of its flowering time machinery to bypass these stresses. Twelve FLOWERING LOCUS T (FT) and two TWIN SISTER OF FT (TSF) members were isolated from banana and their organization and expression pattern studied during development in two varieties that differ in flowering time namely Grand Nain (AAA genotype) and Hill banana (AAB genotype)...
July 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28716420/characterization-of-bdcbf-genes-and-genome-wide-transcriptome-profiling-of-bdcbf3-dependent-and-independent-cold-stress-responses-in-brachypodium-distachyon
#4
Jingjie Hao, Jinliang Yang, Jiangli Dong, Shui-Zhang Fei
Freezing stress substantially reduces crop yields and limits plant distribution. The identification of genes critical for cold acclimation is thus of great importance. C-repeat binding factors (CBFs) are transcription factors that play key regulatory roles in the cold acclimation process, which dramatically increases freezing tolerance in plants. We report here that B. distachyon can successfully cold acclimate and we identified a CBF gene family consisting of eight genes in a tandem array and are designated as BdCBF1-8...
September 2017: Plant Science: An International Journal of Experimental Plant Biology
https://www.readbyqxmd.com/read/28716417/alcohol-dehydrogenase-1-adh1-confers-both-abiotic-and-biotic-stress-resistance-in-arabidopsis
#5
Haitao Shi, Wen Liu, Yue Yao, Yunxie Wei, Zhulong Chan
Although the transcriptional regulation and upstream transcription factors of AtADH1 in response to abiotic stress are widely revealed, the in vivo roles of AtADH1 remain unknown. In this study, we found that the expression of AtADH1 was largely induced after salt, drought, cold and pathogen infection. Further studies found that AtADH1 overexpressing plants were more sensitive to abscisic acid (ABA) in comparison to wide type (WT), while AtADH1 knockout mutants showed no significant difference compared with WT in ABA sensitivity...
September 2017: Plant Science: An International Journal of Experimental Plant Biology
https://www.readbyqxmd.com/read/28716048/transcriptome-analysis-uncovers-arabidopsis-f-box-stress-induced-1-as-a-regulator-of-jasmonic-acid-and-abscisic-acid-stress-gene-expression
#6
Lauren E Gonzalez, Kristen Keller, Karen X Chan, Megan M Gessel, Bryan C Thines
BACKGROUND: The ubiquitin 26S proteasome system (UPS) selectively degrades cellular proteins, which results in physiological changes to eukaryotic cells. F-box proteins are substrate adaptors within the UPS and are responsible for the diversity of potential protein targets. Plant genomes are enriched in F-box genes, but the vast majority of these have unknown roles. This work investigated the Arabidopsis F-box gene F-BOX STRESS INDUCED 1 (FBS1) for its effects on gene expression in order elucidate its previously unknown biological function...
July 17, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28714602/genome-wide%C3%A2-identification-and-characterization%C3%A2-of%C3%A2-hsp-gene-superfamily-in-whitefly-bemisia-tabaci-and-expression-profiling%C3%A2-analysis%C3%A2-under-temperature-stress
#7
Xin-Ru Wang, Chao Wang, Fei-Xue Ban, Dan-Tong Zhu, Shu-Sheng Liu, Xiao-Wei Wang
Heat shock proteins (Hsp) are essential molecular chaperones that play important roles in the stress stimulation of insects. Bemisia tabaci, a phloem feeder and invasive species, can cause extensive crop damage through direct feeding and transmission of plant viruses. Here we employed comprehensive genomics approaches to identity HSP superfamily members in Middle East Asia Minor 1 whitefly genome. In total, we identified 26 Hsp genes, including 3 Hsp90, 17 Hsp70, 1 Hsp60 and 5 sHSP (small heat shock protein, sHSP) genes...
July 17, 2017: Insect Science
https://www.readbyqxmd.com/read/28713404/genome-wide-identification-and-analysis-of-genes-conserved-between-japonica-and-indica-rice-cultivars-that-respond-to-low-temperature-stress-at-the-vegetative-growth-stage
#8
Manu Kumar, Yun-Shil Gho, Ki-Hong Jung, Seong-Ryong Kim
Cold stress is very detrimental to crop production. However, only a few genes in rice have been identified with known functions related to cold tolerance. To meet this agronomic challenge more effectively, researchers must take global approaches to select useful candidate genes and find the major regulatory factors. We used five Gene expression omnibus series data series of Affymetrix array data, produced with cold stress-treated samples from the NCBI Gene Expression Omnibus (http://www.ncbi.nlm.nih.gov/geo/), and identified 502 cold-inducible genes common to both japonica and indica rice cultivars...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28713394/a-novel-nac-transcription-factor-pbenac1-of-pyrus-betulifolia-confers-cold-and-drought-tolerance-via-interacting-with-pbedrebs-and-activating-the-expression-of-stress-responsive-genes
#9
Cong Jin, Kong-Qing Li, Xiao-Yong Xu, Hu-Ping Zhang, Hui-Xian Chen, Yu-Hong Chen, Jing Hao, Yang Wang, Xiao-San Huang, Shao-Ling Zhang
NAC (NAM, ATAF, and CUC) transcription factors are important regulator in abiotic stress and plant development. However, knowledge concerning the functions of plant NAC TFs functioning in stress tolerance and the underlying molecular basis are still limited. In this study, we report functional characterization of the NAC TF, PbeNAC1, isolated from Pyrus betulifolia. PbeNAC1 were greatly induced by cold and drought, while salt stress had little effect on expression. PbeNAC1 was localized in the nuclei showed transactivation activity...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28712388/ring-e3-ligases-key-regulatory-elements-are-involved-in-abiotic-stress-responses-in-plants
#10
Seok Keun Cho, Moon Young Ryu, Jong Hum Kim, Jeong Soo Hong, Tae Rin Oh, Woo Taek Kim, Seong Wook Yang
Plants are constantly exposed to a variety of abiotic stresses, such as drought, heat, cold, flood, and salinity. To survive under such unfavorable conditions, plants have evolutionarily developed their own resistant-mechanisms. For several decades, many studies have clarified specific stress response pathways of plants through various molecular and genetic studies. In particular, it was recently discovered that ubiquitin proteasome system (UPS), a regulatory mechanism for protein turn over, is greatly involved in the stress responsive pathways...
July 17, 2017: BMB Reports
https://www.readbyqxmd.com/read/28704400/genome-wide-analysis-of-the-ccch-zinc-finger-family-identifies-tissue-specific-and-stress-responsive-candidates-in-chickpea-cicer-arietinum-l
#11
Seema Pradhan, Chandra Kant, Subodh Verma, Sabhyata Bhatia
The CCCH zinc finger is a group of proteins characterised by a typical motif consisting of three cysteine residues and one histidine residue. These proteins have been reported to play important roles in regulation of plant growth, developmental processes and environmental responses. In the present study, genome wide analysis of the CCCH zinc finger gene family was carried out in the available chickpea genome. Various bioinformatics tools were employed to predict 58 CCCH zinc finger genes in chickpea (designated CarC3H1-58), which were analysed for their physio-chemical properties...
2017: PloS One
https://www.readbyqxmd.com/read/28696392/comparative-transcriptome-analysis-reveals-adaptive-evolution-of-notopterygium-incisum-and-notopterygium-franchetii-two-high-alpine-herbal-species-endemic-to-china
#12
Yun Jia, Mi-Li Liu, Ming Yue, Zhe Zhao, Gui-Fang Zhao, Zhong-Hu Li
The extreme conditions (e.g., cold, low oxygen, and strong ultraviolet radiation) of the high mountains provide an ideal natural laboratory for studies on speciation and the adaptive evolution of organisms. Up to now, few genome/transcriptome-based studies have been carried out on how plants adapt to conditions at extremely high altitudes. Notopterygium incisum and Notopterygium franchetii (Notopterygium, Apiaceae) are two endangered high-alpine herbal plants endemic to China. To explore the molecular genetic mechanisms of adaptation to high altitudes, we performed high-throughput RNA sequencing (RNA-seq) to characterize the transcriptomes of the two species...
July 11, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28694815/co-overexpression-of-the-constitutively-active-form-of-osbzip46-and-aba-activated-protein-kinase-sapk6-improves-drought-and-temperature-stress-resistance-in-rice
#13
Yu Chang, Ba Hoanh Nguyen, Yongjun Xie, Benze Xiao, Ning Tang, Wenliu Zhu, Tongmin Mou, Lizhong Xiong
Drought is one of the major abiotic stresses threatening rice (Oryza sativa) production worldwide. Drought resistance is controlled by multiple genes, and therefore, a multi-gene genetic engineering strategy is theoretically useful for improving drought resistance. However, the experimental evidence for such a strategy is still lacking. In this study, a few drought-responsive genes from rice were assembled by a multiple-round site-specific assembly system, and the constructs were introduced into the rice cultivar KY131 via Agrobacterium-mediated transformation...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28692266/slmapk1-2-3-and-antioxidant-enzymes-are-associated-with-h2o2-induced-chilling-tolerance-in-tomato-plants
#14
Liu Wang, Ruirui Zhao, Yanyan Zheng, Lin Chen, Rui Li, Junfei Ma, Xiaofeng Hong, Peihua Ma, Jiping Sheng, Lin Shen
Hydrogen peroxide (H2O2) acts as a signaling molecule in response to cold stress. Mitogen-activated protein kinases (MAPKs) and C-repeat/dehydration-responsive factor (CBF) play important roles in cold response regulation. To investigate the roles of MAPKs and CBF in H2O2-induced chilling tolerance, tomato (Solanum lycopersicum cv. Ailsa Craig) plants were treated with 1 mM H2O2 before chilling treatment. The results showed that H2O2 treatment protected subcellular structure, increased concentrations of abscisic acid (ABA), zeatin riboside (ZR) and methyl jasmonate (MeJA), but decreased the concentration of gibberellic acid (GA3)...
July 10, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28690154/overexpression-of-a-novel-myb-related-transcription-factor-osmybr1-confers-improved-drought-tolerance-and-decreased-aba-sensitivity-in-rice
#15
Xuming Yin, Yanchun Cui, Manling Wang, Xinjie Xia
The MYB proteins play important roles in regulating plant responses to environmental stresses. We cloned and functionally characterized a novel MYB-related gene, OsMYBR1, from rice. Our microarray and qRT-PCR analyses showed that its expression was induced by drought and cold in different tissues at various developmental stages. This gene encodes a putative MYB-related protein of 463 amino acid residues. Compared with wild-type (WT) plants, transgenic plants over-expressing OsMYBR1 exhibited much greater tolerance to drought stress and decreased sensitivity to abscisic acid (ABA)...
July 6, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28679505/characterisation-of-phospholipid-diacylglycerol-acyltransferases-pdats-from-camelina-sativa-and-their-roles-in-stress-responses
#16
Lixia Yuan, Xue Mao, Kui Zhao, Xiajie Ji, Chunli Ji, Jinai Xue, Runzhi Li
As an important oilseed worldwide, Camelina sativa is being increasingly explored for its use in production of food, feed, biofuel and industrial chemicals. However, detailed mechanisms of camelina oil biosynthesis and accumulation, particularly in vegetative tissues, are understood to a very small extent. Here, we present genome-wide identification, cloning and functional analysis of phospholipid diacylglycerol acyltransferase (PDAT) in C. sativa, which catalyses the final acylation step in triacylglycerol (TAG) biosynthesis by transferring a fatty acyl moiety from a phospholipid to diacylglycerol (DAG)...
July 15, 2017: Biology Open
https://www.readbyqxmd.com/read/28679357/genome-scale-analysis-of-regulatory-protein-acetylation-enzymes-from-photosynthetic-eukaryotes
#17
R Glen Uhrig, Pascal Schläpfer, Devang Mehta, Matthias Hirsch-Hoffmann, Wilhelm Gruissem
BACKGROUND: Reversible protein acetylation occurring on Lys-N(e) has emerged as a key regulatory post-translational modification in eukaryotes. It is mediated by two groups of enzymes: lysine acetyltransferases (KATs) and lysine deacetylases (KDACs) that catalyze the addition and removal of acetyl groups from target proteins. Estimates indicate that protein acetylation is second to protein phosphorylation in abundance, with thousands of acetylated sites now identified in different subcellular compartments...
July 5, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28676446/identification-and-expression-profiling-of-oryza-sativa-nucleotidyl-transferase-protein-ntp-genes-under-various-stress-conditions
#18
Haiqi Yang, Jianbo Song, Luming Yue, Xiaowei Mo, Jun Song, Beixin Mo
Nucleotidyl transferase proteins (NTPs) modify the 3' ends of mature small RNAs, leading to their stabilization or degradation. The first two plant NTPs, HESO1 and URT1, were identified in Arabidopsis. These two NTPs act cooperatively to uridylate the 3' terminal nucleotide of specific miRNAs, leading to their degradation and thereby affecting the expression of genes regulated by these miRNAs. Little is known about NTPs in other plants. Here, we performed a comprehensive analysis of 13 putative NTP genes in Oryza sativa, a major crop in global food production...
July 1, 2017: Gene
https://www.readbyqxmd.com/read/28674548/photoprotective-strategies-of-mediterranean-plants-in-relation-to-morphological-traits-and-natural-environmental-pressure-a-meta-analytical-approach
#19
Beatriz Fernández-Marín, Antonio Hernández, Jose I Garcia-Plazaola, Raquel Esteban, Fátima Míguez, Unai Artetxe, Maria T Gómez-Sagasti
Despite being a small geographic extension, Mediterranean Basin is characterized by an exceptional plant biodiversity. Adaptive responses of this biocoenosis are delineated by an unusual temporal dissociation along the year between optimal temperature for growth and water availability. This fact generates the combination of two environmental stress factors: a period of summer drought, variable in length and intensity, and the occurrence of mild to cold winters. Both abiotic factors, trigger the generation of (photo)oxidative stress and plants orchestrate an arsenal of structural, physiological, biochemical, and molecular mechanisms to withstand such environmental injuries...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28668354/the-use-of-metabolomic-quantitative-trait-locus-mapping-and-osmotic-adjustment-traits-for-the-improvement-of-crop-yields-under-environmental-stresses
#20
REVIEW
Mostafa Adbelrahman, David J Burritt, Lam-Son P Tran
The sustainable production of food to feed an increasing world population is a major challenge for plant scientists, especially due to the unpredictable and dynamic nature of global climatic conditions. Heat waves, drought, increased soil salinity, unseasonal cold and flooding are all becoming more common climate-related causes of stress for crop plants, and are already affecting yields and the geographical distributions of optimal growing regions for many crops. Therefore, the development and application of multi-faceted strategies, including sustainable agricultural practices and the development and cultivation of intraspecific hybrids containing genetic traits associated with abiotic stress tolerance from wild relatives, will either alone or together be essential to sustainably grow high-yielding crops under increasingly stressful environmental conditions...
June 28, 2017: Seminars in Cell & Developmental Biology
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