Roles of dehydrin genes in wheat tolerance to drought stress

Hassan, Nemat M.; El-Bastawisy, Zeinab M.; El-Sayed, Ahmed K. A.; Ebeed, Heba Talat; Alla, Mamdouh M. Nemat

doi:10.1016/j.jare.2013.11.004

Cited by 64 publications

(30 citation statements)

References 47 publications

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“…Karak showed the highest DHN15.1 expression level among the tested landraces, on the other hand, Ramtha showed the lowest. The up regulation of DHN expression level in drought tolerant genotypes compared to drought sensitive ones under drought stress conditions in the present study is in agreement with Hassan et al (2015). Stress factors that affect plant growth are associated with plant cell dehydration.…”

Section: Discussionsupporting

confidence: 91%

Phenotypic and molecular variation in drought tolerance of Jordanian durum wheat (Triticum durum Desf.) landraces

Khateeb

Shalabi

Schroeder

et al. 2017

Physiol Mol Biol Plants

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Drought is considered one of the major constraints of plant growth and productivity worldwide. Plants respond to drought through different mechanisms including physiological, biochemical, and gene expression modulation. Studying these mechanisms will provide better understanding of drought response mechanisms and will help breeders in developing new cultivars. In this study, growth, biochemical, and molecular responses of four wheat ( Desf.) landraces to drought stress (300 mM mannitol) were investigated at the seedling stage. Reverse transcription-polymerase chain reaction was used to assess gene expression level for a drought stress responsive gene (). Germination percentage, shoot length, root length, and root number for all landraces were decreased significantly under drought stress. However, drought stress caused an increase in proline content, lipid peroxidation level, and transcript level. According to the studied traits, the Karak landrace showed long shoots (48% relative to its control), the longest roots (45% relative to its control) and the highest proline content (483% relative to its control). The results indicate that from the landraces studied, Karak may be selected as the most tolerant wheat landrace and may help in wheat breeding programs for adaptation to drought-prone environments.

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Section: Discussionsupporting

confidence: 91%

Phenotypic and molecular variation in drought tolerance of Jordanian durum wheat (Triticum durum Desf.) landraces

Khateeb

Shalabi

Schroeder

et al. 2017

Physiol Mol Biol Plants

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“…In addition play important roles in different kinds of environmental stress conditions, such as heat and drought, low, and high temperatures and salinity . Several studies demonstrated an increase of plant HSP under different stress conditions, indicating an enhanced need for protein protection under drought stress . We found several HSPs (D6C500, Contig26564, Contig1511, IPR013126) increased in Messire and P665 in response to drought (Fig.…”

Section: Discussionmentioning

confidence: 59%

Label‐free quantitative proteomic analysis of tolerance to drought in Pisum sativum

et al. 2016

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Abiotic stresses caused by adverse environmental conditions are responsible for heavy economic losses on pea crop, being drought one of the most important abiotic constraints. Development of pea cultivars well adapted to dry conditions has been one of the major tasks in breeding programs. The increasing food requirements drive the necessity to broaden the molecular basis of tolerance to drought to develop pea cultivars well adapted to dry conditions. We have used a shotgun proteomic approach (nLC-MSMS) to study the tolerance to drought in three pea genotypes that were selected based on differences in the level of water deficit tolerance. Multivariate statistical analysis of data unraveled 367 significant differences of 700 identified when genotypes and/or treatment were compared. More than half of the significantly changed proteins belong to primary metabolism and protein regulation categories. We propose different mechanisms to cope drought in the genotypes studied. Maintenance of the primary metabolism and protein protection seems a strategy for drought tolerance. On the other hand susceptibility might be related to maintenance of the homeostatic equilibrium, a very energy consuming process. Data are available via ProteomeXchange with identifier PXD004587.

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“…LEA proteins are thought to function in many ways including stabilizers of membranes and proteins and antioxidants to protect cells from damage [47]. In response to water deficit, the expression of these genes is higher in wheat tolerant cultivars compared to sensitive ones [48]. In this study, six out of the top 25 induced genes in resistant genotypes at 6 h (5% of the DEGs) encode LEA proteins in addition to two other dehydrin-type of LEAs (Table 3).…”

Section: Cryo-protectantmentioning

confidence: 65%

Transcriptome Analysis of Drought-Resistant and Drought-Sensitive Sorghum (Sorghum bicolor) Genotypes in Response to PEG-Induced Drought Stress

Abdel‐Ghany

Ullah

Ben-Hur

et al. 2020

IJMS

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Drought is a major limiting factor of crop yields. In response to drought, plants reprogram their gene expression, which ultimately regulates a multitude of biochemical and physiological processes. The timing of this reprogramming and the nature of the drought-regulated genes in different genotypes are thought to confer differential tolerance to drought stress. Sorghum is a highly drought-tolerant crop and has been increasingly used as a model cereal to identify genes that confer tolerance. Also, there is considerable natural variation in resistance to drought in different sorghum genotypes. Here, we evaluated drought resistance in four genotypes to polyethylene glycol (PEG)-induced drought stress at the seedling stage and performed transcriptome analysis in seedlings of sorghum genotypes that are either drought-resistant or drought-sensitive to identify drought-regulated changes in gene expression that are unique to drought-resistant genotypes of sorghum. Our analysis revealed that about 180 genes are differentially regulated in response to drought stress only in drought-resistant genotypes and most of these (over 70%) are up-regulated in response to drought. Among these, about 70 genes are novel with no known function and the remaining are transcription factors, signaling and stress-related proteins implicated in drought tolerance in other crops. This study revealed a set of drought-regulated genes, including many genes encoding uncharacterized proteins that are associated with drought tolerance at the seedling stage.

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Roles of dehydrin genes in wheat tolerance to drought stress

Cited by 64 publications

References 47 publications

Phenotypic and molecular variation in drought tolerance of Jordanian durum wheat (Triticum durum Desf.) landraces

Phenotypic and molecular variation in drought tolerance of Jordanian durum wheat (Triticum durum Desf.) landraces

Label‐free quantitative proteomic analysis of tolerance to drought in Pisum sativum

Transcriptome Analysis of Drought-Resistant and Drought-Sensitive Sorghum (Sorghum bicolor) Genotypes in Response to PEG-Induced Drought Stress

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