Role of Plant Transcription Factors in Abiotic Stress Tolerance

Lata, Charu; Yadav, Amita; Prasad, Manoj

doi:10.5772/23172

Cited by 75 publications

(56 citation statements)

References 181 publications

(154 reference statements)

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“…Many of these genes were also found to respond to various environmental stresses (Lata et al 2011c ;Puranik et al 2012 ). SNAC1 , a stress-responsive NAC is activated primarily in guard cells under dehydration (Hu et al 2006 ).…”

Section: The Nac Regulonmentioning

confidence: 99%

“…The NAC (NAM, ATAF, and CUC) family is one of the plant-specifi c TF family whose members are involved in plant developmental programs and disease resistance (Lata et al 2011c ). Many of these genes were also found to respond to various environmental stresses (Lata et al 2011c ;Puranik et al 2012 ).…”

Section: The Nac Regulonmentioning

confidence: 99%

“…The ABAdependent phosphorylation of the AREB/ABF proteins could be a possible mechanism for this response . The ABFs/ AREBs are grouped under group A AtbZIPs (Jakoby et al 2002 ), which generally function in ABA signaling during seed maturation as well as under stress conditions (Lata et al 2011c ). Reports indicate that these ABFs play a role in diverse stress signaling pathways, viz.…”

Section: The Areb/abf Regulonmentioning

confidence: 99%

See 2 more Smart Citations

Drought Stress Responses and Signal Transduction in Plants

Lata

Muthamilarasan

Prasad

2015

Elucidation of Abiotic Stress Signaling in Plants

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Nature provides all necessary components for healthy growth and development of plants in the form of air, water, light, nutrients, and soil. Any imbalance in the environmental harmony may cause stress to them. Stresses encountered by plants can broadly be categorized into biotic and abiotic stresses. Biotic stresses are mainly caused by pathogens and herbivory, whereas abiotic stresses include the threat imposed by drought, salinity, and extremes of temperature, heavy metals, and pollution. Drought stress is a major cause of yield instability in crops across diverse eco-geographic regions worldwide. A variety of biochemical, molecular, and physiological changes are manifested by plants in response to drought stress. The cellular abscisic acid (ABA) concentration increases on water defi cit leading to the activation of a number of stress-responsive genes and the patterns of expression of these genes are very complex, with some genes being induced early while others respond slowly. In general, drought-responsive genes respond to salt and cold stresses as well as to exogenous ABA treatment. However, there are several genes, which express themselves in an ABA-independent manner suggesting that both ABAdependent and -independent signal transduction cascades exist for drought stress perception, response, and adaptation. Drought stress response and adaptation in plants involves an array of pathways for signal perception, transduction, gene expression and synthesis of proteins, and other stress metabolites. Droughtresponsive genes can mainly be classifi ed into two groups. First group constitutes genes whose products provide osmotolerance and protection to plants thus directly functioning in tolerance to stress, while the second group includes genes playing a role in signal transduction as well as regulation of gene expression. This chapter summarizes the complex molecular mechanisms of drought stress response and adaptation in plants, highlighting the transcriptional regulation of stress-responsive

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Section: The Nac Regulonmentioning

confidence: 99%

Section: The Nac Regulonmentioning

confidence: 99%

Section: The Areb/abf Regulonmentioning

confidence: 99%

See 1 more Smart Citation

Drought Stress Responses and Signal Transduction in Plants

Lata

Muthamilarasan

Prasad

2015

Elucidation of Abiotic Stress Signaling in Plants

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“…Plant-water relations are largely determined by several physiological characteristics including relative water content (RWC) of the leaves wherein drought stressed plants have lower RWC as compared to non-stressed ones [17]. At the biochemical level, water deficit has been observed to stimulate the accumulation of the reactive oxygen species (ROS) such as superoxide (O 2 − ), hydrogen peroxide (H 2 O 2 ) and the hydroxyl radical ( -OH in the leaf, all of which damage the cell constituents [18], leading to leaf chlorosis and senescence [19].…”

Section: Introductionmentioning

confidence: 99%

Comprehensive Screening of Some West and Central African Sesame Genotypes for Drought Resistance Probing by Agromorphological, Physiological, Biochemical and Seed Quality Traits

et al. 2017

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Abstract:Sesame is an important crop in West and Central Africa playing a role of an alternative cash crop for smallholders. However, sesame productivity is highly impaired by drought. This study aimed at identifying some drought-resistant genotypes and efficient screening traits in large sesame germplasm. Ten genotypes were examined based on 21 biochemical, physiological, agromorphological and seed quality traits under three weeks of water stress. A high variability for drought resistance was observed among the genotypes. The genotypes WC17, WC18 and WC14 were drought resistant, WC12, WC13, WC06 and WC03 were moderately drought resistant while, WC02, WC10 and WC08 were drought sensitive, based on principal component analysis. The resistant genotypes exhibited both avoidance and tolerance features including increase of the root system, reduced water loss, highest activity of antioxidative enzymes and accumulation of proline. They produced higher biomass and had higher ability to maintain seed quality under drought stress compared with the sensitive genotypes. Strong accumulation (~200% ratio stress/control) of biochemical markers including superoxide dismutase, ascorbate peroxidase, catalase and proline could be regarded as an important indicator for selecting drought resistant genotypes. This study represents a reference for future research towards developing new varieties with improved drought resistance in West and Central Africa.

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“…Transcription factors play important roles in the regulation of stress response-related gene expression. Five plant-specific transcription factor families (MYB, BZIP, WRKY, AP2/ERF, and NAC) related to biotic and abiotic stressors have been extensively studied (Lata et al, 2011). NAC transcription factors are plant-specific proteins that play an important role in plant development and abiotic and/or biotic stress responses (Olsen et al, 2005).…”

Section: Introductionmentioning

confidence: 99%

Drought-tolerant rice germplasm developed from an Oryza officinalis transformation-competent artificial chromosome clone

Liu¹,

Zhang²,

Chen³

et al. 2015

Genet. Mol. Res.

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ABSTRACT. Oryza officinalis has proven to be a natural gene reservoir for the improvement of domesticated rice as it carries many desirable traits; however, the transfer of elite genes to cultivated rice by conventional hybridization has been a challenge for rice breeders. In this study, the conserved sequence of plant stress-related NAC transcription factors was selected as a probe to screen the O. officinalis genomic transformation-competent artificial chromosome library by Southern blot; 11 positive transformation-competent artificial chromosome clones were subsequently detected. By Agrobacterium-mediated transformation, an indica rice variety, Huajingxian 74 (HJX74), was transformed with a TAC clone harboring a NAC gene-positive genomic fragment from O. officinalis. Molecular analysis revealed that the O. officinalis genomic fragment was integrated into the genome of HJX74. The transgenic lines exhibited high tolerance to drought stress. Our results demonstrate that the introduction of stress-related transformation-competent artificial chromosome clones, coupled with a transgenic validation approach, is an 13667-13678 (2015) effective method of transferring agronomically important genes from O. officinalis to cultivated rice.

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Role of Plant Transcription Factors in Abiotic Stress Tolerance

Cited by 75 publications

References 181 publications

Drought Stress Responses and Signal Transduction in Plants

Drought Stress Responses and Signal Transduction in Plants

Comprehensive Screening of Some West and Central African Sesame Genotypes for Drought Resistance Probing by Agromorphological, Physiological, Biochemical and Seed Quality Traits

Drought-tolerant rice germplasm developed from an Oryza officinalis transformation-competent artificial chromosome clone

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