Drought stress responses in crops

Shanker, Arun K.; Maheswari, M.; Yadav, Sushil Kumar; Desai, Suseelendra; Bhanu, Divya; Attal, Neha Bajaj; Venkateswarlu, B.

doi:10.1007/s10142-013-0356-x

Cited by 204 publications

(156 citation statements)

References 78 publications

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“…This is consistent with earlier reports of drought-induced responses of photosynthesis and metabolism in higher plants. 81,82 In conclusion, we have analyzed gene expression profiles associated with drought stress in flax, and identified 183 differentially expressed genes in shoot and root. These differentially regulated genes belong to 12 diverse functional categories and some of these display coordinated expression under stress conditions suggesting functional importance to drought responses in flax.…”

Section: Discussionmentioning

confidence: 99%

Genome-wide analysis of drought induced gene expression changes in flax (Linum usitatissimum)

et al. 2014

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Section: Discussionmentioning

confidence: 99%

Genome-wide analysis of drought induced gene expression changes in flax (Linum usitatissimum)

et al. 2014

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“…Crop species including wheat are challenged by several biotic and abiotic factors affecting agronomic production (Xin et al 2010;Pandey et al 2014). Moreover, several abiotic stress factors such as droughts, floods, and salinity become more common as a result of global climate change (Shanker et al 2014).…”

Section: Introductionmentioning

confidence: 99%

miRNA-based drought regulation in wheat

Akdoğan

Tüfekçi

Uranbey

et al. 2015

Funct Integr Genomics

198

121

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MicroRNAs (miRNAs) are a class of small non-coding regulatory RNAs that regulate gene expression by guiding target mRNA cleavage or translational inhibition. Drought is a common environmental stress influencing crop growth and development. To date, it has been reported that a number of plant miRNA are involved in drought stress response. In this study, we comparatively investigated drought stress-responsive miRNAs in the root and leaf of bread wheat (Triticum aestivum cv. Sivas 111/33) by miRNA microarray screening. miRNA microarray analysis showed that 285 miRNAs (207 upregulated and 78 downregulated) and 244 miRNAs (115 upregulated and 129 downregulated) were differentially expressed in leaf and root tissues, respectively. Among the differentially expressed miRNAs, 23 miRNAs were only expressed in the leaf and 26 miRNAs were only expressed in the root of wheat growth under drought stress. Upon drought treatment, expression of miR159, miR160, miR166, miR169, miR172, miR395, miR396, miR408, miR472, miR477, miR482, miR1858, miR2118, and miR5049 were found to be significantly differentiated in bread wheat. The regulatory network analysis showed that miR395 has connections with a number of target transcripts, and miR159 and miR319 share a number of target genes. Drought-tolerant and drought-sensitive wheat cultivars showed altered expression pattern upon drought stress in terms of investigated miRNA and their target transcript expression level.

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“…However, it is important to identify genotypes that present mechanisms of water stress tolerance early, which justifies studies of water stress during germination (Thakur and Sharma, 2005). The use of molecular techniques to identify metabolic changes and gene expression, combined with conventional breeding should be employed to develop new cultivars with higher water stress tolerance (Shanker et al, 2014). Although gene expression is an excellent method for studying plant responses under abiotic stress conditions, protein levels are usually not related to the transcript number inside the cell, since several post-transcriptional changes may occur (Timperio et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

Heat-resistant protein expression during germination of maize seeds under water stress

Abreu¹,

Neta²,

Pinho³

et al. 2016

Genet. Mol. Res.

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ABSTRACT. Low water availability is one of the factors that limit agricultural crop development, and hence the development of genotypes with increased water stress tolerance is a challenge in plant breeding programs. Heat-resistant proteins have been widely studied, and are reported to participate in various developmental processes and to accumulate in response to stress. This study aimed to evaluate heat-resistant protein expression under water stress conditions during the germination of maize seed inbreed lines differing in their water stress tolerance. Maize seed lines 91 and 64 were soaked in 0, -0.3, -0.6, and -0.9 MPa water potential for 0, 6, 12, 18, and 24 h. Line 91 is considered more water stress-tolerant than line 64. The analysis of heat-resistant protein expression was made by gel electrophoresis and spectrophotometry. In general, higher expression of heat-resistant proteins was observed in seeds from line 64 subjected to shorter soaking periods and lower water potentials. However, in the water stress-tolerant line 91, a higher expression was observed in seeds that were subjected to -0.3 and -0.6 MPa water potentials. In the absence of water stress, heat-resistant protein expression was reduced with increasing soaking period. Thus, there was a difference in heat-resistant protein expression among the seed lines differing in water stress tolerance. Increased heatresistant protein expression was observed in seeds from line 91 when subjected to water stress conditions for longer soaking periods.

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Drought stress responses in crops

Cited by 204 publications

References 78 publications

Genome-wide analysis of drought induced gene expression changes in flax (Linum usitatissimum)

Genome-wide analysis of drought induced gene expression changes in flax (Linum usitatissimum)

miRNA-based drought regulation in wheat

Heat-resistant protein expression during germination of maize seeds under water stress

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