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rice abiotic stress

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https://www.readbyqxmd.com/read/30107647/ethylenediurea-edu-mitigates-the-negative-effects-of-ozone-in-rice-insights-into-its-mode-of-action
#1
Md Ashrafuzzaman, Zahidul Haque, Basharat Ali, Boby Mathew, Peng Yu, Frank Hochholdinger, Joao Braga de Abreu Neto, Max R McGillen, Hans-Jürgen Ensikat, William J Manning, Michael Frei
Monitoring of ozone damage to crops plays an increasingly important role for the food security of many developing countries. Ethylenediurea (EDU) could be a tool to assess ozone damage to vegetation on field scale, but its physiological mode of action remains unclear. This study investigated mechanisms underlying the ozone-protection effect of EDU in controlled chamber experiments. Ozone sensitive and tolerant rice genotypes were exposed to ozone (108 ppb, 7 h day-1 ) and control conditions. EDU alleviated ozone effects on plant morphology, foliar symptoms, lipid peroxidation and photosynthetic parameters in sensitive genotypes...
August 14, 2018: Plant, Cell & Environment
https://www.readbyqxmd.com/read/30103148/overexpression-of-rcc3-improves-root-system-architecture-and-enhances-salt-tolerance-in-rice
#2
Xingxing Li, Rongrong Chen, Yanli Chu, Junyang Huang, Liang Jin, Guixue Wang, Junli Huang
Root system architecture represents an underexplored target for improving global crop yields. In this study, we investigated the biological role of the rice root-specific gene RCc3 in improving root growth and responses to abiotic stress by overexpressing RCc3 in rice plants. RCc3 was induced by osmotic and heat stress. RCc3 overexpression produced pleiotropic phenotypes of improved root system architecture, including increased growth of primary root, adventitious roots and lateral roots at the seedling stage...
August 8, 2018: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/30099612/overexpressing-heat-shock-protein-oshsp50-2-improves-drought-tolerance-in-rice
#3
Jianhua Xiang, Xinbo Chen, Wei Hu, Yanci Xiang, Mingli Yan, Jieming Wang
OsHSP50.2, an HSP90 family gene up-regulated by heat and osmotic stress treatments, positively regulates drought stress tolerance probably by modulating ROS homeostasis and osmotic adjustment in rice. Heat-shock proteins (HSPs) serve as molecular chaperones for a variety of client proteins in abiotic stress response and play pivotal roles in protecting plants against stress, but the molecular mechanism remains largely unknown. Here, we report an HSP90 family gene, OsHSP50.2, which acts as a positive regulator in drought stress tolerance in rice (Oryza sativa)...
August 11, 2018: Plant Cell Reports
https://www.readbyqxmd.com/read/30099611/the-wheat-tdrl1-is-the-functional-homolog-of-the-rice-rss1-and-promotes-plant-salt-stress-tolerance
#4
Habib Mahjoubi, Yutaka Tamari, Shin Takeda, Oumaya Bouchabké-Coussa, Moez Hanin, Etienne Herzog, Anne-Catherine Schmit, Marie-Edith Chabouté, Chantal Ebel
Rice rss1 complementation assays show that wheat TdRL1 and RSS1 are true functional homologs. TdRL1 over-expression in Arabidopsis conferred salt stress tolerance and alleviated ROS accumulation. Plants have developed highly flexible adaptive responses to their ever-changing environment, which are often mediated by intrinsically disordered proteins (IDP). RICE SALT SENSITIVE 1 and Triticum durum RSS1-Like 1 protein (TdRL1) are both IDPs involved in abiotic stress responses, and possess conserved D and DEN-Boxes known to be required for post-translational degradation by the APC/Ccdc20 cyclosome...
August 11, 2018: Plant Cell Reports
https://www.readbyqxmd.com/read/30097269/maize-similar-to-rcd1-gene-induced-by-salt-enhances-arabidopsis-thaliana-abiotic-stress-resistance
#5
Xiaoyu Li, Yunjian Xu, Fang Liu, Manli Zhao, Yi Sun, Qing Ma
Plant SRO (SIMILAR TO RCD-ONE) proteins play important roles in regulating oxidation and metal ion metabolism. Numbers of SRO proteins have been functional identified in Arabidopsis and rice, but little is known in maize. In this study, we identified a salt induced SRO gene, ZmSRO1b, from maize and analyzed its characteristics. ZmSRO1b expressed mainly in leaf tissues. The ZmSRO1b is encoded by 595 amino acid residues and shared conserved protein models with AtRCD1 and AtSRO1 from Arabidopsis. Promoter-elements analysis showed ZmSRO1b promoter harbored salt and metal stress responsive elements, DRE, GT-like and MRE...
August 6, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/30092010/overexpression-of-the-rice-gene-ossiz1-in-arabidopsis-improves-drought-heat-and-salt-tolerance-simultaneously
#6
Neelam Mishra, Anurag P Srivastava, Nardana Esmaeili, Wenjun Hu, Guoxin Shen
Sumoylation is one of the post translational modifications, which affects cellular processes in plants through conjugation of small ubiquitin like modifier (SUMO) to target substrate proteins. Response to various abiotic environmental stresses is one of the major cellular functions regulated by SUMO conjugation. SIZ1 is a SUMO E3 ligase, facilitating a vital step in the sumoylation pathway. In this report, it is demonstrated that over-expression of the rice gene OsSIZ1 in Arabidopsis leads to increased tolerance to multiple abiotic stresses...
2018: PloS One
https://www.readbyqxmd.com/read/30084165/closing-the-global-ozone-yield-gap-quantification-and-cobenefits-for-multistress-tolerance
#7
Gina Mills, Katrina Sharps, David Simpson, Håkan Pleijel, Michael Frei, Kent Burkey, Lisa Emberson, Johan Uddling, Malin Broberg, Zhaozhong Feng, Kazuhiko Kobayashi, Madhoolika Agrawal
Increasing both crop productivity and the tolerance of crops to abiotic and biotic stresses is a major challenge for global food security in our rapidly changing climate. For the first time, we show how the spatial variation and severity of tropospheric ozone effects on yield compare with effects of other stresses on a global scale, and discuss mitigating actions against the negative effects of ozone. We show that the sensitivity to ozone declines in the order soybean > wheat > maize > rice, with genotypic variation in response being most pronounced for soybean and rice...
August 7, 2018: Global Change Biology
https://www.readbyqxmd.com/read/30078233/a-wuschel-homeobox-transcription-factor-oswox13-enhances-drought-tolerance-and-triggers-early-flowering-in-rice
#8
Pham-Thi Minh-Thu, Joung Sug Kim, Songhwa Chae, Kyong Mi Jun, Gang-Seob Lee, Dong-Eun Kim, Jong-Joo Cheong, Sang Ik Song, Baek Hie Nahm, Yeon-Ki Kim
Plants have evolved strategies to cope with drought stress by maximizing physiological capacity and adjusting developmental processes such as flowering time. The WOX13 orthologous group is the most conserved among the clade of WOX homeodomain-containing proteins and is found to function in both drought stress and flower development. In this study, we isolated and characterized OsWOX13 from rice. OsWOX13 was regulated spatially in vegetative organs but temporally in flowers and seeds. Overexpression of OsWOX13 (OsWOX13-ov) in rice under the rab21 promoter resulted in drought resistance and early flowering by 7-10 days...
July 30, 2018: Molecules and Cells
https://www.readbyqxmd.com/read/30073130/identification-of-splice-variant-of-osgbf1-in-oryza-sativa-ssp-indica-genotypes-under-salinity-stress
#9
Narasimha Ashwini, Radha Sivarajan Sajeevan, Makarala Udayakumar, Karaba N Nataraja
G-box-binding factors are plant transcription factors, involved in a wide range of biological processes including abiotic stress responses. In this study, we analyzed the expression of OsGBF1 during salt stress in two contrasting Oryza sativa spp. indica genotypes, Rasi and Tellahamsa . Two-day-old seedlings were exposed to NaCl stress under two different conditions. One set was exposed to 100 mM NaCl before transferring to 250 mM (induction stress), while another set was transferred directly to 250 mM (shock stress)...
August 2018: 3 Biotech
https://www.readbyqxmd.com/read/30067784/genome-wide-identification-and-expression-profiling-of-the-auxin-response-factor-arf-gene-family-in-physic-nut
#10
Yuehui Tang, Xinxin Bao, Kun Liu, Jian Wang, Ju Zhang, Youwei Feng, Yangyang Wang, Luoxiao Lin, Jingcheng Feng, Chengwei Li
Auxin response factors (ARF) are important transcription factors which mediate the transcription of auxin responsive genes by binding directly to auxin response elements (AuxREs) found in the promoter regions of these genes. To date, no information has been available about the genome-wide organization of the ARF transcription factor family in physic nut. In this study, 17 ARF genes (JcARFs) are identified in the physic nut genome. A detailed investigation into the physic nut ARF gene family is performed, including analysis of the exon-intron structure, conserved domains, conserved motifs, phylogeny, chromosomal locations, potential small RNA targets and expression profiles under various conditions...
2018: PloS One
https://www.readbyqxmd.com/read/30066217/functional-characterization-of-two-myo-inositol-1-phosphate-synthase-mips-gene-promoters-from-the-halophytic-wild-rice-porteresia-coarctata
#11
Papri Basak, Shiny Sangma, Abhishek Mukherjee, Tanushree Agarwal, Sonali Sengupta, Sudipta Ray, Arun Lahiri Majumder
The promoter deletion mutants from second isoform of INO1 (gene-encoding MIPS) from Porteresia coarctata of 932 bp (pPcINO1.2.932) and 793 bp (pPcINO1.2.793) prove to be very efficient as salt/drought stress-inducible promoters, while pPcINO1.2.932 is found to be responsive to cold stress as well. The promoters of the two identified myo-inositol-1-phosphate synthase (INO1) isoforms from salt-tolerant wild rice, Porteresia coarctata (PcINO1.1 and PcINO1.2) have been compared bioinformatically with their counterparts present in the salt-sensitive rice, Oryza sativa...
July 31, 2018: Planta
https://www.readbyqxmd.com/read/30061119/indeterminate-spikelet-1-recruits-histone-deacetylase-and-a-transcriptional-repression-complex-to-regulate-rice-salt-tolerance
#12
Xiliu Cheng, Shaoxuan Zhang, Weichun Tao, Xiangxiang Zhang, Jie Liu, Jiaqiang Sun, Haiwen Zhang, Li Pu, Rongfeng Huang, Tao Chen
Perception and transduction of salt stress signals are critical for plant survival, growth and propagation. Thus, identification of components of the salt stress signaling pathway is important for rice (Oryza sativa) molecular breeding of salt stress resistance. Here, we report the identification of an AP2/ERF (apetala2/ethylene response factor) transcription factor indeterminate spikelet 1 (IDS1) and its roles in the regulation of rice salt tolerance. By genetic screening and phenotype analysis, we demonstrated that IDS1 conferred transcriptional repression activity and acted as a negative regulator of salt tolerance in rice...
July 30, 2018: Plant Physiology
https://www.readbyqxmd.com/read/30031604/natural-and-targeted-isovariants-of-the-rice-actin-depolymerizing-factor-2-can-alter-its-functional-and-regulatory-binding-properties
#13
Sonali Sengupta, Kanniah Rajasekaran, Niranjan Baisakh
Actin depolymerizing factors (ADFs) are ubiquitous actin-binding proteins that play essential roles in maintaining cellular actin dynamics by depolymerizing/severing F-actin. Plant ADF isoforms show functional divergence via differential biochemical and cellular properties. We have shown previously that ADF2 of rice (OsADF2) and smooth cordgrass (SaADF2) displayed contrasting biochemical properties and stress response in planta. As a proof-of-concept that amino acid variances contribute to such functional difference, single amino acid mutants of OsADF2 were generated based on its sequence differences with SaADF2...
July 18, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/30031485/novel-trichoderma-strains-isolated-from-tree-barks-as-potential-biocontrol-agents-and-biofertilizers-for-direct-seeded-rice
#14
Harekrushna Swain, Totan Adak, Arup K Mukherjee, Prasun K Mukherjee, Pratap Bhattacharyya, Shantiprava Behera, Torit Baran Bagchi, Rashmishree Patro, Shasmita, Ansuman Khandual, M K Bag, T K Dangar, S Lenka, M Jena
This study is the first time report of utilization of Trichoderma spp. isolated from different tree bark from Odisha state of India for rice crop health management and higher productivity. Six isolates of Trichoderma spp. were identified based on the morphological characteristics and species determination was performed by molecular assays. One of the isolated strains determined as Trichoderma erinaceum outperformed others. Trichoderma erinaceum controlled three soil borne plant pathogens i.e. Rhizoctonia solani, Sclerotium rolfsii and Sclerotium oryzae effectively under controlled condition and R...
September 2018: Microbiological Research
https://www.readbyqxmd.com/read/30029591/analysis-of-brachypodium-mirna-targets-evidence-for-diverse-control-during-stress-and-conservation-in-bioenergy-crops
#15
Karl R Franke, Skye A Schmidt, Sunhee Park, Dong-Hoon Jeong, Monica Accerbi, Pamela J Green
BACKGROUND: Since the proposal of Brachypodium distachyon as a model for the grasses, over 500 Bdi-miRNAs have been annotated in miRBase making Brachypodium second in number only to rice. Other monocots, such as switchgrass, are completely absent from the miRBase database. While a significant number of miRNAs have been identified which are highly conserved across plants, little research has been done with respect to the conservation of miRNA targets. Plant responses to abiotic stresses are regulated by diverse pathways many of which involve miRNAs; however, it can be difficult to identify miRNA guided gene regulation when the miRNA is not the primary regulator of the target mRNA...
July 20, 2018: BMC Genomics
https://www.readbyqxmd.com/read/30028850/functional-analysis-of-the-hd-zip-transcription-factor-genes-oshox12-and-oshox14-in-rice
#16
Jingxia Shao, Imran Haider, Lizhong Xiong, Xiaoyi Zhu, Rana Muhammad Fraz Hussain, Elin Övernäs, Annemarie H Meijer, Gaisheng Zhang, Mei Wang, Harro J Bouwmeester, Pieter B F Ouwerkerk
The homeodomain-leucine zipper (HD-Zip) transcription factor family plays vital roles in plant development and morphogenesis as well as responses to biotic and abiotic stresses. In barley, a recessive mutation in Vrs1 (HvHox1) changes two-rowed barley to six-rowed barley, which improves yield considerably. The Vrs1 gene encodes an HD-Zip subfamily I transcription factor. Phylogenetic analysis has shown that the rice HD-Zip I genes Oshox12 and Oshox14 are the closest homologues of Vrs1. Here, we show that Oshox12 and Oshox14 are ubiquitously expressed with higher levels in developing panicles...
2018: PloS One
https://www.readbyqxmd.com/read/30028233/in-silico-analyses-of-rice-thionin-genes-and-the-antimicrobial-activity-of-osthion15-against-phytopathogens
#17
Krissana Boonpa, Suparuk Tantong, Kamonwan Weerawanich, Pawinee Panpetch, Onanong Pringsulaka, Sittiruk Roytrakul, Supaart Sirikantaramas
Thionins are a family of antimicrobial peptides. We performed in silico expression analyses of the 44 rice (Oryza sativa L.) thionins (OsTHIONs). Modulated expression levels of OsTHIONs under different treatments suggest their involvement in many processes, including biotic, abiotic and nutritional stress responses, and in hormone signaling. OsTHION15 (LOC_Os06g32600) was selected for further characterization based on several in silico analyses. OsTHION15 in O. sativa L. ssp. indica 'KDML 105' was expressed in all of the tissues/organs examined, including germinating seeds, leaves and roots of seedlings and mature plants, and inflorescences...
July 20, 2018: Phytopathology
https://www.readbyqxmd.com/read/30026748/overexpression-of-ssb-xoc-a-single-stranded-dna-binding-protein-from-xanthomonas-oryzae-pv-oryzicola-enhances-plant-growth-and-disease-and-salt-stress-tolerance-in-transgenic-nicotiana-benthamiana
#18
Yanyan Cao, Mingtao Yang, Wenxiu Ma, Yujing Sun, Gongyou Chen
We previously reported that SSBXoc , a highly conserved single-stranded DNA-binding protein from Xanthomonas spp., was secreted through the type III secretion system (T3SS) and functioned as a harpin-like protein to elicit the hypersensitive response (HR) in the non-host plant, tobacco. In this study, we cloned SsbXoc gene from X. oryzae pv. oryzicola ( Xoc ), the causal agent of bacterial leaf streak in rice, and transferred it into Nicotiana benthamiana via Agrobacterium-mediated transformation. The expression of SsbXoc in transgenic N ...
2018: Frontiers in Plant Science
https://www.readbyqxmd.com/read/30020522/a-zinc-finger-transcriptional-repressor-confers-pleiotropic-effects-on-rice-growth-and-drought-tolerance-by-down-regulating-stress-responsive-genes
#19
Xi Yuan, Peng Huang, Ruqin Wang, Haoyuan Li, Xueqing Lv, Min Duan, Haijuan Tang, Hongsheng Zhang, Ji Huang
The C2H2-type zinc finger proteins (ZFPs) are involved in a wide range of plant development and stress responses. Many studies have shown the positive roles of ZFP genes in stress tolerance. However, overexpression of ZFP genes usually leads to the side effect of growth retardation. Here we report a new member of ZFP family, Oryza sativa drought responsive zinc finger protein 1 (OsDRZ1) positively regulating both stress tolerance and plant architecture in rice (Oryza Sativa L.). OsDRZ1 was expressed throughout all tissues examined and could be induced by multiple abiotic stresses...
July 18, 2018: Plant & Cell Physiology
https://www.readbyqxmd.com/read/30011122/the-meloidogyne-graminicola-effector-mg16820-is-secreted-in-the-apoplast-and-cytoplasm-to-suppress-plant-host-defense-responses
#20
Diana Naalden, Annelies Haegeman, Janice de Almeida-Engler, Firehiwot Birhane Eshetu, Lander Bauters, Godelieve Gheysen
While invading roots, plant-parasitic nematodes secrete effectors to manipulate cellular regulation of the host to promote parasitism. The root-knot nematode Meloidogyne graminicola is one of the most damaging nematodes of rice. Here, we identified a novel effector of this nematode named Mg16820, expressed in the nematode subventral glands. We have localized the Mg16820 effector in the apoplast during the migration phase of the second-stage juvenile in rice roots. In addition, during early development of the feeding site, Mg16820 was localized in the giant cells where it accumulates in the cytoplasm and the nucleus...
July 16, 2018: Molecular Plant Pathology
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