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https://www.readbyqxmd.com/read/28346818/regulation-of-low-temperature-stress-in-plants-by-micrornas
#1
REVIEW
Swati Megha, Urmila Basu, Nat N V Kav
Low temperature is one of the most common environmental stresses that seriously affects the growth and development of plants. However, plants have the plasticity in their defense mechanisms enabling them to tolerate and, sometimes, even survive adverse environmental conditions. MicroRNAs (miRNAs) are small non-coding RNAs, approximately 19-21 nucleotides in length, and are being increasingly recognized as regulators of gene expression at the post-transcriptional level and have the ability to influence a broad range of biological processes...
March 27, 2017: Plant, Cell & Environment
https://www.readbyqxmd.com/read/28344081/plasma-membrane-crpk1-mediated-phosphorylation-of-14-3-3-proteins-induces-their-nuclear-import-to-fine-tune-cbf-signaling-during-cold-response
#2
Ziyan Liu, Yuxin Jia, Yanglin Ding, Yiting Shi, Zhen Li, Yan Guo, Zhizhong Gong, Shuhua Yang
In plant cells, changes in fluidity of the plasma membrane may serve as the primary sensor of cold stress; however, the precise mechanism and how the cell transduces and fine-tunes cold signals remain elusive. Here we show that the cold-activated plasma membrane protein cold-responsive protein kinase 1 (CRPK1) phosphorylates 14-3-3 proteins. The phosphorylated 14-3-3 proteins shuttle from the cytosol to the nucleus, where they interact with and destabilize the key cold-responsive C-repeat-binding factor (CBF) proteins...
March 21, 2017: Molecular Cell
https://www.readbyqxmd.com/read/28338609/ectopic-expression-of-aeluropus-littoralis-plasma-membrane-protein-gene-altmp1-confers-abiotic-stress-tolerance-in-transgenic-tobacco-by-improving-water-status-and-cation-homeostasis
#3
Walid Ben Romdhane, Rania Ben-Saad, Donaldo Meynard, Jean-Luc Verdeil, Jalel Azaza, Nabil Zouari, Lotfi Fki, Emmanuel Guiderdoni, Abdullah Al-Doss, Afif Hassairi
We report here the isolation and functional analysis of AlTMP1 gene encoding a member of the PMP3 protein family. In Aeluropus littoralis, AlTMP1 is highly induced by abscisic acid (ABA), cold, salt, and osmotic stresses. Transgenic tobacco expressing AlTMP1 exhibited enhanced tolerance to salt, osmotic, H₂O₂, heat and freezing stresses at the seedling stage. Under greenhouse conditions, the transgenic plants showed a higher level of tolerance to drought than to salinity. Noteworthy, AlTMP1 plants yielded two- and five-fold more seeds than non-transgenic plants (NT) under salt and drought stresses, respectively...
March 24, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28334275/identification-of-a-novel-bzip-transcription-factor-in-camellia-sinensis-as-a-negative-regulator-of-freezing-tolerance-in-transgenic-arabidopsis
#4
Lu Wang, Hongli Cao, Wenjun Qian, Lina Yao, Xinyuan Hao, Nana Li, Yajun Yang, Xinchao Wang
Background and Aims: Basic region/leucine zipper (bZIP) transcription factors play vital roles in the abiotic stress response of plants. However, little is known about the function of bZIP genes in Camellia sinensis . Methods: CsbZIP6 was overexpressed in Arabidopsis thaliana . Effects of CsbZIP6 overexpression on abscisic acid (ABA) sensitivity, freezing tolerance and the expression of cold-responsive genes in arabidopsis were studied. Key Results: CsbZIP6 was induced during cold acclimation in tea plant...
March 14, 2017: Annals of Botany
https://www.readbyqxmd.com/read/28332574/natural-variation-in-ctb4a-enhances-rice-adaptation-to-cold-habitats
#5
Zhanying Zhang, Jinjie Li, Yinghua Pan, Jilong Li, Lei Zhou, Hongli Shi, Yawen Zeng, Haifeng Guo, Shuming Yang, Weiwei Zheng, Jianping Yu, Xingming Sun, Gangling Li, Yanglin Ding, Liang Ma, Shiquan Shen, Luyuan Dai, Hongliang Zhang, Shuhua Yang, Yan Guo, Zichao Li
Low temperature is a major factor limiting rice productivity and geographical distribution. Improved cold tolerance and expanded cultivation to high-altitude or high-latitude regions would help meet growing rice demand. Here we explored a QTL for cold tolerance and cloned the gene, CTB4a (cold tolerance at booting stage), encoding a conserved leucine-rich repeat receptor-like kinase. We show that different CTB4a alleles confer distinct levels of cold tolerance and selection for variation in the CTB4a promoter region has occurred on the basis of environmental temperature...
March 23, 2017: Nature Communications
https://www.readbyqxmd.com/read/28330560/an-event-of-alternative-splicing-affects-the-expression-of-the-ntrc-gene-encoding-nadph-thioredoxin-reductase-c-in-seed-plants
#6
Victoria A Nájera, María Cruz González, Juan Manuel Pérez-Ruiz, Francisco Javier Cejudo
The NTRC gene encodes a NADPH-dependent thioredoxin reductase with a joint thioredoxin domain, exclusive of photosynthetic organisms. An updated search shows that although most species harbor a single copy of the NTRC gene, two copies were identified in different species of the genus Solanum, Glycine max and the moss Physcomitrella patens. The phylogenetic analysis of NTRCs from different sources produced a tree with the major groups of photosynthetic organisms: cyanobacteria, algae and land plants, indicating the evolutionary success of the NTRC gene among photosynthetic eukaryotes...
May 2017: Plant Science: An International Journal of Experimental Plant Biology
https://www.readbyqxmd.com/read/28326090/vaerd15-a-transcription-factor-gene-associated-with-cold-tolerance-in-chinese-wild-vitis-amurensis
#7
Dongdong Yu, Lihua Zhang, Kai Zhao, Ruxuan Niu, Huan Zhai, Jianxia Zhang
Early responsive to dehydration (ERD) genes can be rapidly induced to counteract abiotic stresses, such as drought, low temperatures or high salinities. Here, we report on an ERD gene (VaERD15) related to cold tolerance from Chinese wild Vitis amurensis accession 'Heilongjiang seedling'. The full-length VaERD15 cDNA is 685 bp, including a 66 bp 5'-untranslated region (UTR), a 196 bp 3'-UTR region and a 423 bp open reading frame encoding 140 amino acids. The VaERD15 protein shares a high amino acid sequence similarity with ERD15 of Arabidopsis thaliana...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28323054/cbfs-at-the-crossroads-of-plant-hormone-signaling-in-cold-stress-response
#8
Javier Barrero-Gil, Julio Salinas
No abstract text is available yet for this article.
March 16, 2017: Molecular Plant
https://www.readbyqxmd.com/read/28317232/soil-parent-material-a-major-driver-of-plant-nutrient-limitations-in-terrestrial-ecosystems
#9
Laurent Augusto, David L Achat, Mathieu Jonard, David Vidal, Bruno Ringeval
Because the capability of terrestrial ecosystems to fix carbon is constrained by nutrient availability, understanding how nutrients limit plant growth is a key contemporary question. However, what drives nutrient limitations at global scale remains to be clarified. Using global data on plant growth, plant nutritive status, and soil fertility, we investigated to which extent soil parent materials explain nutrient limitations. We found that N limitation was not linked to soil parent materials, but was best explained by climate: ecosystems under harsh (i...
March 19, 2017: Global Change Biology
https://www.readbyqxmd.com/read/28282385/genetic-architecture-of-cold-tolerance-in-rice-oryza-sativa-determined-through-high-resolution-genome-wide-analysis
#10
Ehsan Shakiba, Jeremy D Edwards, Farman Jodari, Sara E Duke, Angela M Baldo, Pavel Korniliev, Susan R McCouch, Georgia C Eizenga
Cold temperature is an important abiotic stress which negatively affects morphological development and seed production in rice (Oryza sativa L.). At the seedling stage, cold stress causes poor germination, seedling injury and poor stand establishment; and at the reproductive stage cold decreases seed yield. The Rice Diversity Panel 1 (RDP1) is a global collection of over 400 O. sativa accessions representing the five major subpopulations from the INDICA and JAPONICA varietal groups, with a genotypic dataset consisting of 700,000 SNP markers...
2017: PloS One
https://www.readbyqxmd.com/read/28281578/improved-drought-tolerance-in-wheat-plants-overexpressing-a-synthetic-bacterial-cold-shock-protein-gene-secspa
#11
Tai-Fei Yu, Zhao-Shi Xu, Jin-Kao Guo, Yan-Xia Wang, Brian Abernathy, Jin-Dong Fu, Xiao Chen, Yong-Bin Zhou, Ming Chen, Xing-Guo Ye, You-Zhi Ma
Cold shock proteins (CSPs) enhance acclimatization of bacteria to adverse environmental circumstances. The Escherichia coli CSP genes CspA and CspB were modified to plant-preferred codon sequences and named as SeCspA and SeCspB. Overexpression of exogenous SeCspA and SeCspB in transgenic Arabidopsis lines increased germination rates, survival rates, and increased primary root length compared to control plants under drought and salt stress. Investigation of several stress-related parameters in SeCspA and SeCspB transgenic wheat lines indicated that these lines possessed stress tolerance characteristics, including lower malondialdehyde (MDA) content, lower water loss rates, lower relative Na(+) content, and higher chlorophyll content and proline content than the control wheat plants under drought and salt stresses...
March 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28277967/plant-electrome-can-be-pushed-toward-a-self-organized-critical-state-by-external-cues-evidences-from-a-study-with-soybean-seedlings-subject-to-different-environmental-conditions
#12
Gustavo M Souza, Arlan S Ferreira, Gustavo F R Saraiva, Gabriel R A Toledo
In the present study, we have investigated how the low-voltage electrical signals of soybean seedlings change their temporal dynamic under different environmental conditions (cold, low light, and low osmotic potential). We have used electrophytografic technique (EPG) with sub-dermal electrodes inserted in 15-days-old seedlings located between root and shoot, accounting for a significant part of the individual seedlings. Herein, to work on a specific framework to settle this type of the study, we are adopting the term "electrome" as a reference to the totality of electrical activity measured...
March 4, 2017: Plant Signaling & Behavior
https://www.readbyqxmd.com/read/28276450/the-effect-of-cold-priming-on-the-fitness-of-arabidopsis-thaliana-accessions-under-natural-and-controlled-conditions
#13
Jelena Cvetkovic, Klaus Müller, Margarete Baier
Priming improves an organism's performance upon a future stress. To test whether cold priming supports protection in spring and how it is affected by cold acclimation, we compared seven Arabidopsis accessions with different cold acclimation potentials in the field and in the greenhouse for growth, photosynthetic performance and reproductive fitness in March and May after a 14 day long cold-pretreatment at 4 °C. In the plants transferred to the field in May, the effect of the cold pretreatment on the seed yield correlated with the cold acclimation potential of the accessions...
March 9, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28275855/expression-of-cold-and-drought-regulatory-protein-cccdr-of-pigeonpea-imparts-enhanced-tolerance-to-major-abiotic-stresses-in-transgenic-rice-plants
#14
Mellacheruvu Sunitha, Tamirisa Srinath, Vudem Dashavantha Reddy, Khareedu Venkateswara Rao
Transgenic rice expressing pigeonpea Cc CDR conferred high-level tolerance to different abiotic stresses. The multiple stress tolerance observed in CcCDR -transgenic lines is attributed to the modulation of ABA-dependent and-independent signalling-pathway genes. Stable transgenic plants expressing Cajanus cajan cold and drought regulatory protein encoding gene (CcCDR), under the control of CaMV35S and rd29A promoters, have been generated in indica rice. Different transgenic lines of CcCDR, when subjected to drought, salt, and cold stresses, exhibited higher seed germination, seedling survival rates, shoot length, root length, and enhanced plant biomass when compared with the untransformed control plants...
March 8, 2017: Planta
https://www.readbyqxmd.com/read/28265283/exogenous-melatonin-mitigates-photoinhibition-by-accelerating-non-photochemical-quenching-in-tomato-seedlings-exposed-to-moderate-light-during-chilling
#15
Fei Ding, Meiling Wang, Bin Liu, Shuoxin Zhang
Melatonin plays an important role in tolerance to multiple stresses in plants. Recent studies have shown that melatonin relieves photoinhibition in plants under cold stress; however, the mechanisms are not fully understood. Non-photochemical quenching (NPQ) is a key process thermally dissipating excess light energy that plants employ as a protective mechanism to prevent the over reduction of photosystem II. Here, we report the effects of exogenous melatonin on NPQ and mitigation of photoinhibition in tomato seedlings exposed to moderate light during chilling...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28261247/selection-of-candidate-reference-genes-for-gene-expression-analysis-in-kentucky-bluegrass-poa-pratensis-l-under-abiotic-stress
#16
Kuiju Niu, Yi Shi, Huiling Ma
Kentucky bluegrass (Poa pratensis L.) belong to Gramineae and is widely used in lawns, golf courses, landscapes, and sport fields as a prominent cool-season grass. Gene expression patterns during different stages of plant development can provide clues toward the understanding of its biological functions. The selection and validation of reference genes are the first steps in any real-time quantitative PCR gene expression study. Therefore, suitable reference genes are necessary for obtaining reliable results in real-time quantitative PCR analyses of Kentucky bluegrass...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28258553/cassava-c-repeat-binding-factor-1-gene-responds-to-low-temperature-and-enhances-cold-tolerance-when-overexpressed-in-arabidopsis-and-cassava
#17
Dong An, Qiuxiang Ma, Hongxia Wang, Jun Yang, Wenzhi Zhou, Peng Zhang
Cassava MeCBF1 is a typical CBF transcription factor mediating cold responses but its low expression in apical buds along with a retarded response cause inefficient upregulation of downstream cold-related genes, rendering cassava chilling-sensitive. Low temperature is a major abiotic stress factor affecting survival, productivity and geographic distribution of important crops worldwide. The C-repeat/dehydration-responsive element binding transcription factors (CBF/DREB) are important regulators of abiotic stress response in plants...
March 4, 2017: Plant Molecular Biology
https://www.readbyqxmd.com/read/28249019/genome-wide-characterization-and-expression-profiling-of-hd-zip-gene-family-related-to-abiotic-stress-in-cassava
#18
Zehong Ding, Lili Fu, Yan Yan, Weiwei Tie, Zhiqiang Xia, Wenquan Wang, Ming Peng, Wei Hu, Jiaming Zhang
Homeodomain-leucine zipper (HD-Zip) gene family plays important roles in various abiotic stresses and hormone signaling in plants. However, no information is currently available regarding this family in cassava (Manihot esculenta), an important drought-tolerant crop in tropical and sub-tropical areas. Here, 57 HD-Zip genes (MeHDZ01-57) were identified in the cassava genome, and they were classified into four subfamilies based on phylogenetic analysis, which was further supported by their gene structure and conserved motif characteristics...
2017: PloS One
https://www.readbyqxmd.com/read/28241790/leaf-transcriptome-analysis-of-a-subtropical-evergreen-broadleaf-plant-wild-oil-tea-camellia-camellia-oleifera-revealing-candidate-genes-for-cold-acclimation
#19
Jiaming Chen, Xiaoqiang Yang, Xiaomao Huang, Shihua Duan, Chuan Long, Jiakuan Chen, Jun Rong
BACKGROUND: Cold tolerance is a key determinant of the geographical distribution range of a plant species and crop production. Cold acclimation can enhance freezing-tolerance of plant species through a period of exposure to low nonfreezing temperatures. As a subtropical evergreen broadleaf plant, oil-tea camellia demonstrates a relatively strong tolerance to freezing temperatures. Moreover, wild oil-tea camellia is an essential genetic resource for the breeding of cultivated oil-tea camellia, one of the four major woody oil crops in the world...
February 28, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28241738/response-of-micrornas-to-cold-treatment-in-the-young-spikes-of-common-wheat
#20
Guoqi Song, Rongzhi Zhang, Shujuan Zhang, Yulian Li, Jie Gao, Xiaodong Han, Mingli Chen, Jiao Wang, Wei Li, Genying Li
BACKGROUND: MicroRNAs (miRNAs) are a class of small non-coding RNAs that play important roles in biotic and abiotic stresses by regulating their target genes. For common wheat, spring frost damage frequently occurs, especially when low temperature coincides with plants at early floral organ differentiation, which may result in significant yield loss. Up to date, the role of miRNAs in wheat response to frost stress is not well understood. RESULTS: We report here the sequencing of small RNA transcriptomes from the young spikes that were treated with cold stress and the comparative analysis with those of the control...
February 28, 2017: BMC Genomics
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