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Wheat drought

Fei Luo, Xiong Deng, Yue Liu, Yueming Yan
BACKGROUND: Wheat (Triticum aestivum L.) serves as important grain crop widely cultivated in the world, which is often suffered by drought stress in natural conditions. As one of the most important post translation modifications, protein phosphorylation widely participates in plant abiotic stress regulation. In this study, we performed the first comparative analysis of phosphorylated protein characterization in flag leaves and developing grains of elite Chinese bread wheat cultivar Zhongmai 175 under water deficit by combining with proteomic approach and Pro-Q Diamond gel staining...
December 8, 2018: Botanical Studies (Taipei, Taiwan)
Xinshan Zang, Xiaoli Geng, Kexiang He, Fei Wang, Xuejun Tian, Mingming Xin, Yingyin Yao, Zhaorong Hu, Zhongfu Ni, Qixin Sun, Huiru Peng
Wheat ( Triticum aestivum L.) yield and quality are adversely affected by heat, drought, or the combination of these two stresses in many regions of the world. A phosphoenolpyruvate carboxylase kinase-related kinase gene, TaPEPKR2 , was identified from our previous heat stress-responsive transcriptome analysis of heat susceptible and tolerant wheat cultivars. Based on the wheat cultivar Chinese Spring genome sequence, TaPEPKR2 was mapped to chromosome 5B. Expression analysis revealed that TaPEPKR2 was induced by heat and polyethylene glycol treatment...
2018: Frontiers in Plant Science
Kaifa Wei, Huiqin Chen
BACKGROUND: The basic helix-loop-helix transcription factors play important roles in diverse cellular and molecular processes. Comparative functional genomics can provide powerful approaches to draw inferences about gene function and evolution among species. The comprehensive comparison of bHLH gene family in different gramineous plants has not yet been reported. RESULTS: In this study, a total of 183, 231 and 571 bHLHs were identified in rice, maize and wheat genomes respectively, and 1154 bHLH genes from the three species and Arabidopsis were classified into 36 subfamilies...
November 29, 2018: BMC Plant Biology
Jofre Carnicer, Constantí Stefanescu, Maria Vives-Ingla, Carlos López, Sofia Cortizas, Christopher Wheat, Roger Vila, Joan Llusià, Josep Peñuelas
1.Widespread population declines have been reported for diverse Mediterranean butterflies over the last three decades, and have been significantly associated to increased global change impacts. The specific landscape and climatic drivers of these declines remain uncertain for most declining species. 2.Here we analyse whether plastic phenotypic traits of a model butterfly species (Pieris napi) perform as reliable biomarkers of vulnerability to extreme temperature impacts in natural populations, showing contrasting trends in thermally exposed and thermally buffered populations...
November 27, 2018: Journal of Animal Ecology
Jonas Jägermeyr, Katja Frieler
Testing our understanding of crop yield responses to weather fluctuations at global scale is notoriously hampered by limited information about underlying management conditions, such as cultivar selection or fertilizer application. Here, we demonstrate that accounting for observed spatial variations in growing seasons increases the variance in reported national maize and wheat yield anomalies that can be explained by process-based model simulations from 34 to 58% and 47 to 54% across the 10 most weather-sensitive main producers, respectively...
November 2018: Science Advances
Shreya Bhattacharya, Arundhati Banerjee, Pragati Prasad Sah, Chittabrata Mal, Sujay Ray
Wheat (Triticum aestivum), having high nutritional values is one of the staple food of most of the countries in the world. The productivity of the crop decreases drastically when it encounters various abiotic stresses, most common of which are heat, drought, flood and salinity. There is a crucial role of stress response proteins for the survival of the crops in stress conditions. So the study of wheat stress response proteins is of great importance to raise wheat production in different stress conditions. In this study, we analysed 14-3-3 protein, a stress response protein that is expressed in three major stresses, for example heat, drought and salinity and helps the plants to survive in those conditions...
October 4, 2018: Computational Biology and Chemistry
Dalia Abdel-Fattah H Selim, Rania Mohamed A Nassar, Mohamed S Boghdady, Mercedes Bonfill
The aim of this study was to assess some physiological parameters and anatomical changes in two wheat plant cultivars (Triticum aestivum L. cvs. Sakha 93 and Sids 9) in response to irrigation with magnetized water under two levels of drought stress (field capacity (FC) of 75% and 50%) and the control (FC 100%) in two consecutive winter growing seasons (November 20 to May 5 2014/2015 and 2015/2016). Pot experiments were carried out in a greenhouse in the experimental farm of the Faculty of Agriculture, Menoufia University, Shibin El-Kom, Egypt...
November 14, 2018: Plant Physiology and Biochemistry: PPB
Fachao Shi, Xiufen Yang, Hongmei Zeng, Lihua Guo, Dewen Qiu
The protein elicitor PeaT1 was found in Alternaria tenuissima and exerted broad spectrum resistance in wheat, cotton, and rice. Recently, we found that overexpressing PeaT1 rice (OE) could enhance plant drought tolerance. Elucidating some elevated drought stress-related proteins and associated mechanisms is inevitable for improving drought tolerance in rice. In this study, combining a label-free quantitative proteomic method, multiple proteins were differentially accumulated in OE plants. Among these, a total of 57 significant changed proteins (including 32 up-regulated and 25 down-regulated) were mainly involved in metabolic, cellular, biological progress, and stress response...
November 2018: 3 Biotech
Guoyong Leng, Jim Hall
Understanding the potential drought impacts on agricultural production is critical for ensuring global food security. Instead of providing a deterministic estimate, this study investigates the likelihood of yield loss of wheat, maize, rice and soybeans in response to droughts of various intensities in the 10 largest producing countries. We use crop-country specific standardized precipitation index (SPI) and census yield data for 1961-2016 to build a probabilistic modeling framework for estimating yield loss risk under a moderate (-1...
November 5, 2018: Science of the Total Environment
Sergio Gálvez, Rosa Mérida-García, Carlos Camino, Philippa Borrill, Michael Abrouk, Ricardo H Ramírez-González, Sezgi Biyiklioglu, Francisco Amil-Ruiz, Gabriel Dorado, Hikmet Budak, Victoria Gonzalez-Dugo, Pablo J Zarco-Tejada, Rudi Appels, Cristobal Uauy, Pilar Hernandez
Wheat can adapt to most agricultural conditions across temperate regions. This success is the result of phenotypic plasticity conferred by a large and complex genome composed of three homoeologous genomes (A, B, and D). Although drought is a major cause of yield and quality loss in wheat, the adaptive mechanisms and gene networks underlying drought responses in the field remain largely unknown. Here, we addressed this by utilizing an interdisciplinary approach involving field water status phenotyping, sampling, and gene expression analyses...
November 16, 2018: Functional & Integrative Genomics
Tatyana A Pshenichnikova, Alexey V Doroshkov, Svetlana V Osipova, Alexey V Permyakov, Marina D Permyakova, Vadim M Efimov, Dmitry A Afonnikov
Density and length of leaf pubescence are important factors of diversity in the response to water deficiency among wheat genotypes. Many studies evidence an important protective value of leaf hairiness in plants, especially under the conditions of drought, thermal loads and increased solar radiation. However, the physiological and adaptive roles of such traits in cereals, including cultivated plants, have not been sufficiently studied to date. The aim of this work was to study the association of morphological characteristics of leaves with parameters of gas exchange and chlorophyll fluorescence in wheat lines carrying a genetically different leaf hairiness...
November 16, 2018: Planta
Mirza Hasanuzzaman, Kamrun Nahar, Anisur Rahman, Masashi Inafuku, Hirosuke Oku, Masayuki Fujita
Nitric oxide (NO) is an important plant signaling molecule that has a vital role in abiotic stress tolerance. In the present study, we assessed drought-induced (15 and 30% PEG, polyethylene glycol) damage in wheat ( Triticum aestivum L. cv. Prodip) seedlings and mitigation by the synergistic effect of exogenous Arg (0.5 mM l-Arginine) and an NO donor (0.5 mM sodium nitroprusside, SNP). Drought stress sharply decreased the leaf relative water content (RWC) but markedly increased the proline (Pro) content in wheat seedlings...
November 2018: Physiology and Molecular Biology of Plants: An International Journal of Functional Plant Biology
Nimesha Fernando, Singarayer K Florentine, Mani Naiker, Joe Panozzo, Bhagirath S Chauhan
Annual ryegrass is one of the most serious, costly weeds of winter cropping systems in Australia. To determine whether its competition-mediated plant defence mechanisms effect on wheat grain quality, wheat (cv. Yitpi) and annual ryegrass were grown under two levels of CO2 (400 ppm; (a[CO2 ]) vs 700 ppm; (e[CO2 ]), two levels of water (well-watered vs drought) and two types of competition (wheat only; (W), and wheat × annual ryegrass; (W × R) with four replicates. The competition × [CO2 ] interaction had a significant effect on wheat grain protein content, where it was increased in W × R under both e[CO2 ] (+17%) and a[CO2 ] (+21%)...
March 15, 2019: Food Chemistry
Rui Hu, Jie Xiao, Ting Gu, Xiaofen Yu, Yang Zhang, Junli Chang, Guangxiao Yang, Guangyuan He
BACKGROUND: WD40 domains are abundant in eukaryotes, and they are essential subunits of large multiprotein complexes, which serve as scaffolds. WD40 proteins participate in various cellular processes, such as histone modification, transcription regulation, and signal transduction. WD40 proteins are regarded as crucial regulators of plant development processes. However, the systematic identification and analysis of WD40 proteins have yet to be reported in wheat. RESULTS: In this study, a total of 743 WD40 proteins were identified in wheat, and they were grouped into 5 clusters and 11 subfamilies...
November 6, 2018: BMC Genomics
Offiong U Edet, Yasir S A Gorafi, Seong-Woo Cho, Masahiro Kishii, Hisashi Tsujimoto
Developing wheat-alien chromosome introgression lines to improve bread wheat's resistance to stresses, such as drought, salinity stress and diseases, requires reliable markers to identify and characterize the alien chromatins. Leymus mollis is a wild relative of bread wheat resistant to salinity and economically important diseases of wheat, but its genome sequence and cytological markers are not available. We devised a molecular marker-assisted strategy for L. mollis chromosome identification and applied it to produce 10 wheat-L...
October 31, 2018: Scientific Reports
Ling Hu, Yan Xie, Shoujin Fan, Zongshuai Wang, Fahong Wang, Bin Zhang, Haosheng Li, Jie Song, Lingan Kong
No abstract text is available yet for this article.
November 2018: Plant Science: An International Journal of Experimental Plant Biology
Philomin Juliana, Osval A Montesinos-López, José Crossa, Suchismita Mondal, Lorena González Pérez, Jesse Poland, Julio Huerta-Espino, Leonardo Crespo-Herrera, Velu Govindan, Susanne Dreisigacker, Sandesh Shrestha, Paulino Pérez-Rodríguez, Francisco Pinto Espinosa, Ravi P Singh
Genomic selection and high-throughput phenotyping (HTP) are promising tools to accelerate breeding gains for high-yielding and climate-resilient wheat varieties. Hence, our objective was to evaluate them for predicting grain yield (GY) in drought-stressed (DS) and late-sown heat-stressed (HS) environments of the International maize and wheat improvement center's elite yield trial nurseries. We observed that the average genomic prediction accuracies using fivefold cross-validations were 0.50 and 0.51 in the DS and HS environments, respectively...
October 19, 2018: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
M van der Velde, B Baruth, A Bussay, A Ceglar, S Garcia Condado, S Karetsos, R Lecerf, R Lopez, A Maiorano, L Nisini, L Seguini, M van den Berg
Here we assess the quality and in-season development of European wheat (Triticum spp.) yield forecasts during low, medium, and high-yielding years. 440 forecasts were evaluated for 75 wheat forecast years from 1993-2013 for 25 European Union (EU) Member States. By July, years with median yields were accurately forecast with errors below ~2%. Yield forecasts in years with low yields were overestimated by ~10%, while yield forecasts in high-yielding years were underestimated by ~8%. Four-fifths of the lowest yields had a drought or hot driver, a third a wet driver, while a quarter had both...
October 18, 2018: Scientific Reports
José Madrid-Espinoza, Nidia Brunel-Saldias, Fernando P Guerra, Adelina Gutiérrez, Alejandro Del Pozo
Aquaporins (AQPs) are transmembrane proteins essential for controlling the flow of water and other molecules required for development and stress tolerance in plants, including important crop species such as wheat ( Triticum aestivum ). In this study, we utilized a genomic approach for analyzing the information about AQPs available in public databases to characterize their structure and function. Furthermore, we validated the expression of a suite of AQP genes, at the transcriptional level, including accessions with contrasting responses to drought, different organs and water stress levels...
October 15, 2018: Genes
N I Dzyubenko
N.I. Vavilov was among the first scientists who recognized the high potential value of plant genetic resources (PGR) for humankind. In addition to his fundamental work on the centers of crop origin, he emphasized the importance of collection and ex situ conservation of cultivated plants and their wild relatives, to make them available for breeding programs and for future generations. Vavilov's ideas formed a solid scientific basis for the long-term efforts on securing PGR in ex situ genebanks, both internationally and in Russia...
October 2018: Biopreservation and Biobanking
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