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Cold stress plant

Chunyan Mo, Shumin Wan, Youquan Xia, Ning Ren, Yang Zhou, Xingyu Jiang
Cassava is an energy crop that is tolerant of multiple abiotic stresses. It has been reported that the interaction between Calcineurin B-like (CBL) protein and CBL-interacting protein kinase (CIPK) is implicated in plant development and responses to various stresses. However, little is known about their functions in cassava. Herein, 8 CBL ( MeCBL ) and 26 CIPK ( MeCIPK ) genes were isolated from cassava by genome searching and cloning of cDNA sequences of Arabidopsis CBL s and CIPK s. Reverse-transcriptase polymerase chain reaction (RT-PCR) analysis showed that the expression levels of MeCBL and MeCIPK genes were different in different tissues throughout the life cycle...
2018: Frontiers in Plant Science
Michał Rurek, Magdalena Czołpińska, Tomasz Andrzej Pawłowski, Włodzimierz Krzesiński, Tomasz Spiżewski
Complex proteomic and physiological approaches for studying cold and heat stress responses in plant mitochondria are still limited. Variations in the mitochondrial proteome of cauliflower ( Brassica oleracea var. botrytis ) curds after cold and heat and after stress recovery were assayed by two-dimensional polyacrylamide gel electrophoresis (2D PAGE) in relation to mRNA abundance and respiratory parameters. Quantitative analysis of the mitochondrial proteome revealed numerous stress-affected protein spots. In cold, major downregulations in the level of photorespiratory enzymes, porine isoforms, oxidative phosphorylation (OXPHOS) and some low-abundant proteins were observed...
March 16, 2018: International Journal of Molecular Sciences
Yanping Chen, Yingjun Chi, Qingchang Meng, Xiaolin Wang, Deyue Yu
In plants, various proteins are regulated by the ubiquitin-mediated system in response to different environmental stresses, such as drought, cold and heat. The Skp1-Cullin-F-box (SCF) complex, one of the multisubunit E3 ligases, has been shown to be involved in abiotic response pathways. In this study, Glycine max SKP1-like 1 (GmSK1), which had the typical characteristics of an SKP1 protein, with an alpha/beta structure, targeted to the cytoplasm and nucleus, was isolated from soybean [Glycine max (L.)]. GmSK1 was constitutively expressed in all the tested tissues, especially in the roots...
March 7, 2018: Plant Physiology and Biochemistry: PPB
Dengwei Jue, Xuelian Sang, Liqin Liu, Bo Shu, Yicheng Wang, Jianghui Xie, Chengming Liu, Shengyou Shi
Ubiquitin-conjugating enzymes (E2s or UBC enzymes) play vital roles in plant development and combat various biotic and abiotic stresses. Longan ( Dimocarpus longan Lour.) is an important fruit tree in the subtropical region of Southeast Asia and Australia; however the characteristics of the UBC gene family in longan remain unknown. In this study, 40 D. longan UBC genes ( DlUBCs ), which were classified into 15 groups, were identified in the longan genome. An RNA-seq based analysis showed that DlUBCs showed distinct expression in nine longan tissues...
March 15, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
Jun You, Yanyan Wang, Yujuan Zhang, Komivi Dossa, Donghua Li, Rong Zhou, Linhai Wang, Xiurong Zhang
Sesame (Sesamum indicum L.) is an important oilseed crop. However, multiple abiotic stresses severely affect sesame growth and production. Raffinose family oligosaccharides (RFOs), such as raffinose and stachyose, play an important role in desiccation tolerance of plants and developing seeds. In the present study, three types of key enzymes, galactinol synthase (GolS), raffinose synthase (RafS) and stachyose synthase (StaS), responsible for the biosynthesis of RFOs were identified at the genome-wide scale in sesame...
March 12, 2018: Scientific Reports
Ya'nan Jin, Shanshan Zhai, Wenjia Wang, Xihan Ding, Zhifu Guo, Liping Bai, Shu Wang
Adverse environmental conditions limit various aspects of plant growth, productivity, and ecological distribution. To get more insights into the signaling pathways under low temperature, we identified 10 C-repeat binding factors ( CBFs ), 9 inducer of CBF expression ( ICEs ) and 10 cold-responsive ( CORs ) genes from Aegilops - Triticum composite group under cold stress. Conserved amino acids analysis revealed that all CBF, ICE, COR contained specific and typical functional domains. Phylogenetic analysis of CBF proteins from Triticeae showed that these CBF homologs were divided into 11 groups...
March 2018: Physiology and Molecular Biology of Plants: An International Journal of Functional Plant Biology
Yanglin Ding, Yuxin Jia, Yiting Shi, Xiaoyan Zhang, Chunpeng Song, Zhizhong Gong, Shuhua Yang
Cold stress is a major environmental factor that negatively affects plant growth and survival. OST1 has been identified as a key protein kinase in plant response to cold stress; however, little is known about the underlying molecular mechanism. In this study, we identified BTF3 and BTF3L (BTF3-like), β-subunits of a nascent polypeptide-associated complex (NAC), as OST1 substrates that positively regulate freezing tolerance. OST1 phosphorylates BTF3 and BTF3L in vitro and in vivo , and facilitates their interaction with C-repeat-binding factors (CBFs) to promote CBF stability under cold stress...
March 5, 2018: EMBO Journal
Guaiqiang Chai, Chunlian Li, Feng Xu, Yang Li, Xue Shi, Yong Wang, Zhonghua Wang
BACKGROUND: The cuticle covers the surface of the polysaccharide cell wall of leaf epidermal cells and forms an essential diffusion barrier between the plant and the environment. The cuticle is composed of cutin and wax. Cuticular wax plays an important role in the survival of plants by serving as the interface between plants and their biotic and abiotic environments, especially restricting nonstomatal water loss. Leaf cuticular waxes of hexaploid wheat at the seedling stage mainly consist of primary alcohols, aldehydes, fatty acids, alkane and esters...
March 5, 2018: BMC Plant Biology
Dongzhi Lin, Kailun Zheng, Zhaohui Liu, Zhikang Li, Sheng Teng, Jianlong Xu, Yanjun Dong
Transcriptionally active chromosome (TAC) is a component of protein-DNA complexes with RNA polymerase activity, expressed in the plastid. However, the function of rice TAC proteins is still poorly understood. In this paper, we first report the identification of a new rice ( L.) mutant () in the gene encoding TAC. The mutant displayed an albino phenotype and malformed chloroplasts before the three-leaf stage when grown at low temperatures (20°C) and a normal phenotype at higher temperatures (>28°C). Map-based cloning revealed that encodes a novel chloroplast-targeted TAC protein in rice...
March 2018: Plant Genome
M Akbari, H Salehi, A Niazi
The main goals of the present study were to screen Iranian common bermudagrasses to find cold-tolerant accessions and evaluate their genetic and morphological variabilities. In this study, 49 accessions were collected from 18 provinces of Iran. One foreign cultivar of common bermudagrass was used as control. Morphological variation was evaluated based on 14 morphological traits to give information about taxonomic position of Iranian common bermudagrass. Data from morphological traits were evaluated to categorize all accessions as either cold sensitive or tolerant using hierarchical clustering with Ward's method in SPSS software...
February 26, 2018: Molecular Biotechnology
Han Cheng, Xiang Chen, Jialin Fang, Zewei An, Yanshi Hu, Huasun Huang
The rubber tree (Hevea brasiliensis Muell. Arg) is a tropical, perennial, woody plant that is susceptible to cold stress. In China, cold stress has been found to severely damage rubber plants in plantations in past decades. Although several Hevea clones that are resistant to cold have been developed, their cold hardiness mechanism has yet to be elucidated. For the study reported herein, we subjected the cold-resistant clone CATAS93-114 and the cold-sensitive clone Reken501 to chilling stress, and characterized their transcriptomes at 0, 2, 8 and 24 h after the start of chilling...
February 21, 2018: Tree Physiology
Jingjing Geng, Ji-Hong Liu
The basic helix-loop-helix (bHLH) transcription factors (TFs) comprise one of the largest gene families in plants and participate in various physiological processes, but physiological role and regulatory function of the majority of bHLHs remain poorly understood. Here, a total of 56 putative CsbHLH genes were identified in sweet orange (Citrus sinensis) based on a genome-wide analysis. The CsbHLHs, except four members, were distributed throughout nine chromosomes and divided into 19 subgroups. Most of the CsbHLH genes were responsive to cold stress, with the greatest upregulation being observed in CsbHLH18...
February 21, 2018: Journal of Experimental Botany
Laure Gallien, Damaris Zurell, Niklaus E Zimmermann
Disentangling the different processes structuring ecological communities is a long-standing challenge. In species-rich ecosystems, most emphasis has so far been given to environmental filtering and competition processes, while facilitative interactions between species remain insufficiently studied. Here, we propose an analysis framework that not only allows for identifying pairs of facilitating and facilitated species, but also estimates the strength of facilitation and its variation along environmental gradients...
February 2018: Ecology and Evolution
Divya Vashisth, Ritesh Kumar, Shubhra Rastogi, Vikas Kumar Patel, Alok Kalra, Madan Mohan Gupta, Anil Kumar Gupta, Ajit Kumar Shasany
Artemisia annua is known to be the source of artemisinin worldwide which is an antimalarial compound but is synthesised in very limited amount in the plant. Most research laid emphasis on the methods of enhancing artemisinin but our study has been planned in a way that it may simultaneously address two problems encountered by the plant. Firstly, to know the effect on the artemisinin content in the era of climate change because the secondary metabolites tend to increase under stress. Secondly, to identify some of the stress responsive genes that could help in stress tolerance of the plant under abiotic stress...
February 21, 2018: Scientific Reports
Youjing Wang, Lin Jiang, Jiaqi Chen, Lei Tao, Yimin An, Hongsheng Cai, Changhong Guo
The WRKY transcription factors play an important role in the regulation of transcriptional reprogramming associated with plant abiotic stress responses. In this study, the WRKY transcription factor MsWRKY11, containing the plant-specific WRKY zinc finger DNA-binding motif, was isolated from alfalfa. The MsWRKY11 gene was detected in all plant tissues (root, stem, leaf, flower, and fruit), with high expression in root and leaf tissues. MsWRKY11 was upregulated in response to a variety of abiotic stresses, including salinity, alkalinity, cold, abscisic acid, and drought...
2018: PloS One
Simone Klatt, Christoph C F Schinkel, Bernhard Kirchheimer, Stefan Dullinger, Elvira Hörandl
Background and Aims: Alpine plants grow in harsh environments and are thought to face occasional frost during the sensitive reproductive phase. Apomixis (asexual reproduction via seed) can be advantageous when sexual reproduction is disturbed by cold stress. Apomictic polyploids tend to grow in colder climates than their sexual diploid relatives. Whether cold temperatures actually induce apomixis was unknown to date. Methods: We tested experimentally in climate cabinets for effects of low temperatures and repeated frost on phenology, fitness and mode of reproduction in diploid and tetraploid cytotypes of the alpine species Ranunculus kuepferi...
February 15, 2018: Annals of Botany
Yong Zhou, Lifang Hu, Lunwei Jiang, Shiqiang Liu
Metacaspase (MC), a family of caspase-like proteins, plays vital roles in regulating programmed cell death (PCD) during development and in response to stresses in plants. In this study, five MC genes (designated as CsMC1 to CsMC5) were identified in the cucumber (Cucumis sativus) genome. Sequence analysis revealed that CsMC1-CsMC3 belong to type I MC proteins, while CsMC4 and CsMC5 are type II MC proteins. Phylogenetic tree and conserved motif analysis of MC proteins indicated that these proteins can be classified into two groups, which are correlated with the types of these MC proteins...
February 20, 2018: Genome Génome / Conseil National de Recherches Canada
Sang Shang, Chunlai Wu, Chao Huang, Weiwei Tie, Yan Yan, Zehong Ding, Zhiqiang Xia, Wenquan Wang, Ming Peng, Libo Tian, Wei Hu
GENERAL REGULATORY FACTOR (GRF) proteins play vital roles in the regulation of plant growth, development, and response to abiotic stress. However, little information is known for this gene family in cassava ( Manihot esculenta ). In this study, 15 MeGRFs were identified from the cassava genome and were clustered into the ε and the non-ε groups according to phylogenetic, conserved motif, and gene structure analyses. Transcriptomic analyses showed eleven Me GRFs with constitutively high expression in stems, leaves, and storage roots of two cassava genotypes...
February 20, 2018: Genes
Walid Ben-Romdhane, Rania Ben-Saad, Donaldo Meynard, Nabil Zouari, Ali Mahjoub, Lotfi Fki, Emmanuel Guiderdoni, Abdullah Al-Doss, Afif Hassairi
Herein, we report isolation of the AlTMP2 gene from the halophytic C4 grass Aeluropus littoralis. The subcellular localization suggested that AlTMP2 is a plasma membrane protein. In A. littoralis exposed to salt and osmotic stresses, the AlTMP2 gene was induced early and at a high rate, but was upregulated relatively later in response to abscisic acid and cold treatments. Expression of AlTMP2 in tobacco conferred improved tolerance against salinity, osmotic, H 2 O 2 , heat, and freezing stresses at the germination and seedling stages...
February 15, 2018: Protoplasma
Mona H Soliman, Aisha A M Alayafi, Amr A El Kelish, Abdelghafar M Abu-Elsaoud
BACKGROUND: High and low temperatures constitute the most damaging type of abiotic stress and limit the survival, and productivity of plants. The present study aimed to evaluate the role of exogenous applications of acetylsalicylic acid (ASA) in reducing the deleterious effects of cold stress. Phaseolus vulgaris L. seedlings were treated with foliar-sprayed ASA at concentrations of 0-3 mM and then subjected to chilling stress at 4 °C for 2 or 4 days. RESULTS: Growth, photosynthesis, biochemical alterations, oxidative damage and antioxidant enzyme activities as well as the expression of cold-responsive genes (CBF3-COR47), were monitored during the experiment...
February 15, 2018: Botanical Studies (Taipei, Taiwan)
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