Physiological, Morphological and Molecular Mechanisms for Drought Tolerance in Rice

vani, Shi; Dwivedi, D. K.; Husain, Raja; Kumar, Girjesh; Yadav, G. P.; Kumar, Gaurav; Mitra, S.K.; Singh, O. N.; Vikram, Nitin; Khan, Naveed Ahmad

doi:10.20546/ijcmas.2017.607.431

Cited by 4 publications

(3 citation statements)

References 47 publications

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“…Plants have adopted many molecular mechanisms to withstand different abiotic stress, and a number of stress related genes get stimulated under stress conditions 66, 67 . Among them, MAPKs (Mitogen Activated Protein Kinases) are the most important enzymes for the plant growth and development and also play an important role in signal transduction under extreme conditions 68– 72 .…”

Section: Vigsmentioning

confidence: 99%

Milestones achieved in response to drought stress through reverse genetic approaches

Singh

Kukreja²,

Goutam

2018

F1000Res

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Drought stress is the most important abiotic stress that constrains crop production and reduces yield drastically. The germplasm of most of the cultivated crops possesses numerous unknown drought stress tolerant genes. Moreover, there are many reports suggesting that the wild species of most of the modern cultivars have abiotic stress tolerant genes. Due to climate change and population booms, food security has become a global issue. To develop drought tolerant crop varieties knowledge of various genes involved in drought stress is required. Different reverse genetic approaches such as virus-induced gene silencing (VIGS), clustered regularly interspace short palindromic repeat (CRISPR), targeting induced local lesions in genomes (TILLING) and expressed sequence tags (ESTs) have been used extensively to study the functionality of different genes involved in response to drought stress. In this review, we described the contributions of different techniques of functional genomics in the study of drought tolerant genes.

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Section: Vigsmentioning

confidence: 99%

Milestones achieved in response to drought stress through reverse genetic approaches

Singh

Kukreja²,

Goutam

2018

F1000Res

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“…Plants have a variety of molecular mechanisms to deal with abiotic stress and other stress-related genes are activated in response to stress 53,54 . An important enzyme for growth and development in the plant, Mitogen-Activated Protein Kinases (MAPKs), which are also very important in signal transduction under severe conditions [55][56][57][58][59] .…”

Section: Introductionmentioning

confidence: 99%

Comparative Analysis of Gene Expression in Selected Drought Resistant Vegetables

Olumide¹,

Moses²,

Chukwuma³

et al. 2023

Asian J. of Plant Sciences

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Drought is an environmental stress that is known worldwide to be a major concern in the production of quality food crops. Several characteristics of drought tolerance have been confirmed in Amaranthus hypochondriacus, Amaranthus tricolor, Amaranthus hybridus, Vigna unguiculata and have been utilized in the breeding of drought-tolerant genotypes of several vegetables. Four techniques were described in this study for gene expression in Amaranthus. In sunflower, RNA sequencing by rtPCR is the major method used in gene expression. However, in Arabidopsis, microarray technology which includes cDNA or oligonucleotide microarrays is the technique analysed in the study. Several other vegetables have shown different ways of adapting to drought and the biochemical and physiological effects have been observed in some other neglected vegetables. Not much is available in the literature on a comparative review of expressed genes for drought tolerance in literature. This review aims to bridge such a gap by comparing gene expression analyses and providing a single front of information for a user.

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“…Numerous genes are expressed and translated in response to drought and have been identified to interact with the environment, thus the networks associated with water deficit conditions are quite complex [14].…”

Section: Introductionmentioning

confidence: 99%

Global transcriptome and weighted gene co-expression network analyses of growth-stage-specific and hybrid-cultivar-specific drought stress responses in maize

Liu¹,

Zenda²,

Jin³

et al. 2020

Preprint

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Background Drought is the major abiotic stress threatening maize ( Zea mays L.) production globally. Therefore, deciphering the molecular basis of maize drought tolerance remains pertinent. Results Here, through a comprehensive comparative leaf transcriptome analysis of drought-tolerant hybrid ND476 plants subjected to water-sufficient (control) and water-deficit (drought) treatment conditions at four (V12, VT, R1, and R4) crop growth stages, we report key cultivar-specific and growth-stage-specific molecular mechanisms regulating drought stress responses in maize. Based on the transcriptome analysis, a total of 3451 differentially expressed genes (DEGs) were identified from the four experimental comparisons, with 2403, 650, 397 and 313 DEGS observed at the V12, VT, R1, and R4 stages, respectively. The expression changes in these genes effected corresponding metabolic pathway responses related to drought tolerance in maize. Subsequently, 3451 DEGs were divided into 12 modules by weighted gene co-expression network analysis (WGCNA), comprising 277 hub genes covering drought-responsive genes involved in water-deficit stress and developmental signaling crosstalk. Interestingly, the co-expressed genes that clustered into similar modules exhibited diverse expression tendencies and got annotated to different GO terms at different stages. MapMan analysis revealed that DEGs related to stress signal transduction, detoxification, transcription factor regulation, hormone signaling and secondary metabolites biosynthesis were universal across the four growth stages. However, the DEGs associated with photosynthesis and amino acid metabolism; protein degradation; transport; and RNA transcriptional regulation were uniquely enriched at the V12, VT, R2, and R4 stages, respectively. Conclusions Our results affirmed that maize drought stress adaptation is a whole-plant response as well as a stage-specific response process. We hope that our findings will aid in clarifying the fundamental cultivar-specific and growth-stage-specific molecular mechanisms regulating drought stress responses in maize. In addition, the genes and metabolic pathways identified here can be valuable genetic resources or selection targets for developing new drought resistant maize cultivars.

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Physiological, Morphological and Molecular Mechanisms for Drought Tolerance in Rice

Cited by 4 publications

References 47 publications

Milestones achieved in response to drought stress through reverse genetic approaches

Milestones achieved in response to drought stress through reverse genetic approaches

Comparative Analysis of Gene Expression in Selected Drought Resistant Vegetables

Global transcriptome and weighted gene co-expression network analyses of growth-stage-specific and hybrid-cultivar-specific drought stress responses in maize

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