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rice abiotic stress

Xinyou Cao, Liqin Hu, Xueyan Chen, Rongzhi Zhang, Dungong Cheng, Haosheng Li, Zhaoshi Xu, Liancheng Li, Yongbin Zhou, Aifeng Liu, Jianming Song, Cheng Liu, Jianjun Liu, Zhendong Zhao, Ming Chen, Youzhi Ma
BACKGROUND: Potassium (K) is essential to plant growth and development. Foxtail millet (Setaria italic L.) is an important fodder grain crop in arid and semi-arid regions of Asia and Africa because of its strong tolerance to drought and barren stresses. The molecular mechanisms of physiological and biochemical responses and regulations to various abiotic stresses such as low potassium conditions in foxtail millet are not fully understood, which hinders the research and exploitation of this valuable resource...
February 15, 2019: BMC Genomics
Yeon-Ju Na, Hye-Kyung Choi, Min Young Park, Seo-Wha Choi, Kieu Thi Xuan Vo, Jong-Seong Jeon, Soo Young Kim
Approximately 75 MAP kinase kinase kinases (MAPKKKs) have been identified in the rice genome. However, only a few of them have been functionally characterized. In this paper, we report the function of a rice MAPKKK, OsMAPKKK63. OsMAPKKK63 was found to be induced by several abiotic stresses, including high salinity, chilling and drought. Our data indicate that OsMAPKKK63 possesses in vitro kinase activity and that it interacts with rice MAP kinase kinase OsMKK1 and OsMKK6. The two rice MKKs are known mediator of the salt stress response, implying that OsMAPKKK63 may be involved in the high salinity response...
February 14, 2019: Plant Signaling & Behavior
Arpita Das, Krishnendu Pramanik, Rishu Sharma, Saikat Gantait, Joydeep Banerjee
Germin-like proteins (GLPs) are involved in biotic and abiotic stress tolerance in different plant species. Rice (Oryza sativa L.) genome contains about 40 GLP family member proteins in nine chromosomes. Although some of the rice GLP (OsGLP) promoters have been studied through in silico analysis as well as experimentally, studies regarding the distribution pattern of the biotic and abiotic stress associated transcription factor binding sites (TFbs) in the promoter regions of OsGLP genes have not been attempted thoroughly...
2019: PloS One
Navin Kumar, Ambedkar Gautam, Arvind Kumar Dubey, Ruma Ranjan, Ashutosh Pandey, Babita Kumari, Gayatri Singh, Sachin Mandotra, Puneet Singh Chauhan, Saripella Srikrishna, Venkatesh Dutta, Shekhar Mallick
γ-aminobutyric acid (GABA) is a free amino acid, which helps to counteract biotic and abiotic stresses in plants. In the present study, two concentrations of GABA, i.e., 0.5 mM and 1 mM were applied to examine the tolerance of rice seedlings against As(III) (25 µM) toxicity, through the modulations of fatty acids (FAs), stress responsive amino acids (AAs) and polyamines (PAs) biosynthesis. Exogenous GABA (0.5 mM) application significantly reduced the H2 O2 and TBARS levels and recovered the growth parameters against As(III) stressed rice seedlings...
February 8, 2019: Ecotoxicology and Environmental Safety
Chih-Cheng Lin, Ya-Ting Chao, Wan-Chieh Chen, Hsiu-Yin Ho, Mei-Yi Chou, Ya-Ru Li, Yu-Lin Wu, Hung-An Yang, Hsiang Hsieh, Choun-Sea Lin, Fu-Hui Wu, Shu-Jen Chou, Hao-Chung Jen, Yung-Hsiang Huang, Deli Irene, Wen-Jin Wu, Jian-Li Wu, Daniel J Gibbs, Meng-Chiao Ho, Ming-Che Shih
The rice SUB1A-1 gene, which encodes a group VII ethylene response factor (ERFVII), plays a pivotal role in rice survival under flooding stress, as well as other abiotic stresses. In Arabidopsis , five ERFVII factors play roles in regulating hypoxic responses. A characteristic feature of Arabidopsis ERFVIIs is a destabilizing N terminus, which functions as an N-degron that targets them for degradation via the oxygen-dependent N-end rule pathway of proteolysis, but permits their stabilization during hypoxia for hypoxia-responsive signaling...
February 5, 2019: Proceedings of the National Academy of Sciences of the United States of America
Joungsu Joo, Youn Hab Lee, Sang Ik Song
OsbZIP42 is a positive regulator of ABA signaling and drought stress tolerance. The activation of OsbZIP42 depends on stress-/ABA-activated protein kinase 4 (SAPK4) and an additional ABA-dependent modification of OsbZIP42. Basic leucine zipper transcription factors (bZIP TFs) play important roles in the ABA signaling pathway in plants. Rice OsbZIP42 is a member of the group E bZIP, which is an ortholog of Arabidopsis group A bZIP. This latter group includes abscisic acid-responsive element (ABRE)-binding factors (ABFs) involved in abiotic stress tolerance...
February 2, 2019: Planta
Md Shofiqul Islam, John Ontoy, Prasanta K Subudhi
Soil and water salinity is one of the major abiotic stresses that reduce growth and productivity in major food crops including rice. The lack of congruence of salt tolerance quantitative trait loci (QTLs) in multiple genetic backgrounds and multiple environments is a major hindrance for undertaking marker-assisted selection (MAS). A genome-wide meta-analysis of QTLs controlling seedling-stage salt tolerance was conducted in rice using QTL information from 12 studies. Using a consensus map, 11 meta-QTLs for three traits with smaller confidence intervals were localized on chromosomes 1 and 2...
January 29, 2019: Plants (Basel, Switzerland)
Sajid Hussain, Chunquan Zhu, Zhigang Bai, Jie Huang, Lianfeng Zhu, Xiaochuang Cao, Satyabrata Nanda, Saddam Hussain, Aamir Riaz, Qingduo Liang, Liping Wang, Yefeng Li, Qianyu Jin, Junhua Zhang
Salt stress is one of the key abiotic stresses causing huge productivity losses in rice. In addition, the differential sensitivity to salinity of different rice genotypes during different growth stages is a major issue in mitigating salt stress in rice. Further, information on quantitative proteomics in rice addressing such an issue is scarce. In the present study, an isobaric tags for relative and absolute quantitation (iTRAQ)-based comparative protein quantification was carried out to investigate the salinity-responsive proteins and related biochemical features of two contrasting rice genotypes-Nipponbare (NPBA, japonica ) and Liangyoupeijiu (LYP9, indica ), at the maximum tillering stage...
January 28, 2019: International Journal of Molecular Sciences
Ram B Khadka, Norman Uphoff
Many benefits of Trichoderma inoculation for improving crop production have been documented, including growth and yield enhancement and the alleviation of biotic and abiotic stresses. However, because rice is usually cultivated under continuous flooding that creates anaerobic soil conditions, this limits the benefits of these beneficial fungi. Cultivating rice with the methods of the System of Rice Intensification (SRI) provides rice plants with a more favorable environment for their colonization by beneficial microbes in the soil because the soil is more aerobic under SRI management and contains more organic matter...
2019: PeerJ
Manoj Kumar Yadav, S Aravindan, Umakanta Ngangkham, S Raghu, S R Prabhukarthikeyan, U Keerthana, B C Marndi, Totan Adak, Susmita Munda, Rupesh Deshmukh, D Pramesh, Sanghamitra Samantaray, P C Rath
Understanding of genetic diversity is important to explore existing gene in any crop breeding program. Most of the diversity preserved in the landraces which are well-known reservoirs of important traits for biotic and abiotic stresses. In the present study, the genetic diversity at twenty-four most significant blast resistance gene loci using twenty-eight gene specific markers were investigated in landraces originated from nine diverse rice ecologies of India. Based on phenotypic evaluation, landraces were classified into three distinct groups: highly resistant (21), moderately resistant (70) and susceptible (70)...
2019: PloS One
Mariya Tsaneva, Kristof De Schutter, Bruno Verstraeten, Els J M Van Damme
Rice ( Oryza sativa ) is one of the main staple crops worldwide but suffers from important yield losses due to different abiotic and biotic stresses. Analysis of quantitative trait loci (QTL) is a classical genetic method which enables the creation of more resistant cultivars but does not yield information on the genes directly involved or responsible for the desired traits. Lectins are known as proteins with diverse functions in plants. Some of them are abundant proteins in seeds and are considered as storage/defense proteins while other lectins are known as stress-inducible proteins, implicated in stress perception and signal transduction as part of plant innate immunity...
January 20, 2019: International Journal of Molecular Sciences
Mohamed A El-Esawi, Aisha A Alayafi
Rab family proteins play a crucial role in plant developmental processes and tolerance to environmental stresses. The current study investigated whether rice Rab7 ( OsRab7 ) overexpression could improve rice tolerance to drought and heat stress conditions. The OsRab7 gene was cloned and transformed into rice plants. The survival rate, relative water content, chlorophyll content, gas-exchange characteristics, soluble protein content, soluble sugar content, proline content, and activities of antioxidant enzymes (CAT, SOD, APX, POD) of the transgenic rice lines were significantly higher than that of the wild-type...
January 17, 2019: Genes
Muhammad Asad Ullah Asad, Shamsu Ado Zakari, Qian Zhao, Lujian Zhou, Yu Ye, Fangmin Cheng
Abiotic stresses trigger premature leaf senescence by affecting some endogenous factors, which is an important limitation for plant growth and grain yield. Among these endogenous factors that regulate leaf senescence, abscisic acid (ABA) works as a link between the oxidase damage of cellular structure and signal molecules responding to abiotic stress during leaf senescence. Considering the importance of ABA, we collect the latest findings related to ABA biosynthesis, ABA signaling, and its inhibitory effect on chloroplast structure destruction, chlorophyll (Chl) degradation, and photosynthesis reduction...
January 10, 2019: International Journal of Molecular Sciences
Jiaming Li, Minghui Zhang, Jian Sun, Xinrui Mao, Jing Wang, Jingguo Wang, Hualong Liu, Hongliang Zheng, Zhen Zhen, Hongwei Zhao, Detang Zou
Trihelix transcription factors play a role in plant growth, development and various stress responses. Here, we identified 41 trihelix family genes in the rice genome. These OsMSL s (Myb/SANT-LIKE) were located on twelve chromosomes. Synteny analysis indicated only six duplicated gene pairs in the rice trihelix family. Phylogenetic analysis of these OsMSL s and the trihelix genes from other species divided them into five clusters. OsMSL s from different groups significantly diverged in terms of gene structure and conserved functional domains...
January 10, 2019: International Journal of Molecular Sciences
Funing Meng, Dan Xiang, Jianshu Zhu, Yong Li, Chuanzao Mao
Roots are fundamentally important for growth and development, anchoring the plant to its growth substrate, facilitating water and nutrient uptake from the soil, and sensing and responding to environmental signals such as biotic and abiotic stresses. Understanding the molecular mechanisms controlling root architecture is essential for improving nutrient uptake efficiency and crop yields. In this review, we describe the progress being made in the identification of genes and regulatory pathways involved in the development of root systems in rice (Oryza sativa L...
January 10, 2019: Rice
Ghazala Nawaz, Hunseung Kang
BACKGROUND: Despite increasing characterization of DEAD-box RNA helicases (RHs) in chloroplast gene expression regulation at posttranscriptional levels in plants, their functional roles in growth responses of crops, including rice (Oryza sativa), to abiotic stresses are yet to be characterized. In this study, rice OsRH58 (LOC_Os01g73900), a chloroplast-localized DEAD-box RH, was characterized for its expression patterns upon stress treatment and its functional roles using transgenic Arabidopsis plants under normal and abiotic stress conditions...
January 9, 2019: BMC Plant Biology
Abdullah Shalmani, Xiu-Qing Jing, Yi Shi, Izhar Muhammad, Meng-Ru Zhou, Xiao-Yong Wei, Qiong-Qiong Chen, Wen-Qiang Li, Wen-Ting Liu, Kun-Ming Chen
BACKGROUND: B-box (BBX) proteins play important roles in plant growth regulation and development including photomorphogenesis, photoperiodic regulation of flowering, and responses to biotic and abiotic stresses. RESULTS: In the present study we retrieved total 131 BBX members from five Poaceae species including 36 from maize, 30 from rice, 24 from sorghum, 22 from stiff brome, and 19 from Millet. All the BBX genes were grouped into five subfamilies on the basis of their phylogenetic relationships and structural features...
January 9, 2019: BMC Genomics
Apinya Longya, Chaivarakun Chaipanya, Marina Franceschetti, Josephine H R Maidment, Mark James Banfield, Chatchawan Jantasuriyarat
Higher yield potential and greater yield stability are common targets for crop breeding programs, including those in rice. Despite these efforts, biotic and abiotic stresses continue to impact rice production. Rice blast disease, caused by Magnaporthe oryzae, is the most devastating disease affecting rice worldwide. In the field, resistant varieties are unstable and can become susceptible to disease within a few years of release due to the adaptive potential of the blast fungus, specifically in the effector (avirulence or AVR) gene pool...
January 2, 2019: Molecular Plant-microbe Interactions: MPMI
Yuhua Zhang, Jiapeng Fang, Xibao Wu, Liyao Dong
BACKGROUND: Salinization is a primary abiotic stress constraining global plant growth and production. Weedy rice, though highly homologous to cultivated rice, is more salt tolerant during seed germination and seedling growth; we hypothesize that this is owing to ionic homeostasis and changes in the expression of genes encoding ion transport regulators. RESULTS: The four different genotypes of weedy (JYGY-1 and JYFN-4) and cultivated (Nipponbare and 9311) rice have different salt-tolerance during seed germination and seedling vegetative growth under salt stress...
December 29, 2018: BMC Plant Biology
Yoav Yichie, Chris Brien, Bettina Berger, Thomas H Roberts, Brian J Atwell
BACKGROUND: Soil salinity is widespread in rice-producing areas globally, restricting both vegetative growth and grain yield. Attempts to improve the salt tolerance of Asian rice, Oryza sativa-the most salt sensitive of the major cereal crops-have met with limited success, due to the complexity of the trait and finite variation in salt responses among O. sativa lines. Naturally occurring variation among the more than 20 wild species of the Oryza genus has great potential to provide breeders with novel genes to improve resistance to salt...
December 22, 2018: Rice
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