Abiotic Stress Response in Plants: Role of Cytoskeleton

Soda, Neelam; Singla‐Pareek, Sneh L.; Pareek, Ashwani

doi:10.1002/9783527694570.ch6

Cited by 9 publications

(7 citation statements)

References 138 publications

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“…Consistent with the hypersensitivity of im leaves to high temperature stress (Figs 6 and 7), the genes involved in ABA responses, heat shock protein (HSP) synthesis, transport, cytoskeleton and stomatal movements were differentially expressed in the im leaves (Fig 8 and Tables 2 and S1) [31,[81][82][83]. As also discussed earlier, ABA is a stress-responsive phytohormone that is considered the first messenger for stomatal regulation [31].…”

Section: Molecular Mechanisms Of Temperature Stress Response In Im Leavessupporting

confidence: 79%

“…Intracellular calcium ion and reactive oxygen species (ROS) are the second messengers that commonly involve in downstream of the stomatal regulatory pathways and abiotic stress responses [ 32 ]. Expansion and shrinking of guard cells needed for stomatal opening and closing are regulated by the turgor pressure driven by the influx of K + , anions, and sugar as well as restructuring of the cytoskeleton [ 31 , 83 ]. Multiple factors including phospholipases, small molecules derived from membrane lipids, protein kinases and protein phosphatases also play regulatory roles in ABA signaling pathway and abiotic stress responses [ 31 ] thus affecting stomatal activity.…”

Section: Discussionmentioning

confidence: 99%

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Evidence for thermosensitivity of the cotton (Gossypium hirsutum L.) immature fiber (im) mutant via hypersensitive stomatal activity

et al. 2021

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Thickness of cotton fiber, referred to as fiber maturity, is a key determinant of fiber quality, lint yield, and textile performance. The cotton immature fiber (im) mutant has been used to study fiber maturity since its fiber is thinner than the wild type near isogeneic line (NIL), Texas Marker-1 (TM-1). The im phenotype is caused by a single recessive mutation of a pentatricopeptide repeat (PPR) gene that reduces the activity of mitochondrial complex I and up-regulates stress responsive genes. However, the mechanisms altering the stress responses in im mutant are not well understood. Thus, we characterized growth and gas exchange in im and TM-1 under no stress and also investigated their stress responses by comparing gas exchange and transcriptomic profiles under high temperature. Phenotypic differences were detected between the NILs in non-fiber tissues although less pronounced than the variation in fibers. At near optimum temperature (28±3°C), im maintained the same photosynthetic performance as TM-1 by means of greater stomatal conductance. In contrast, under high temperature stress (>34°C), im leaves reduced photosynthesis by decreasing the stomatal conductance disproportionately more than TM-1. Transcriptomic analyses showed that the genes involved in heat stress responses were differentially expressed between the NIL leaves. These results indicate that the im mutant previously reported to have low activity of mitochondrial complex I displays increased thermosensitivity by impacting stomatal conductance. They also support a notion that mitochondrial complex I activity is required for maintenance of optimal photosynthetic performance and acclimation of plants to high temperature stress. These findings may be useful in the future efforts to understand how physiological mechanisms play a role in determining cotton fiber maturity and may influence stress responses in other crops.

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Section: Molecular Mechanisms Of Temperature Stress Response In Im Leavessupporting

confidence: 79%

Section: Discussionmentioning

confidence: 99%

Evidence for thermosensitivity of the cotton (Gossypium hirsutum L.) immature fiber (im) mutant via hypersensitive stomatal activity

et al. 2021

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“…Carbohydrate/protein binding interactions may help protect proteins from misfolding or degradation (Williams and Davies, 2001). Cytoskeletal protein binding may influence the plant's ability to maintain cell integrity and adapt to structural changes caused by Al stress (Soda et al, 2016). This was followed by activities of molecular regulatory enzymes like hydrolase, transferase, pyrophosphatase, protein kinase, etc.…”

Section: Discussionmentioning

confidence: 99%

Physiological and proteomic characterization revealed the response mechanisms underlying aluminium tolerance in lentil (Lens culinaris Medikus)

Singh,

Maithreyi,

Taunk

et al. 2024

Physiologia Plantarum

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Aluminium (Al) toxicity causes major plant distress, affecting root growth, nutrient uptake and, ultimately, agricultural productivity. Lentil, which is a cheap source of vegetarian protein, is recognized to be sensitive to Al toxicity. Therefore, it is important to dissect the physiological and molecular mechanisms of Al tolerance in lentil. To understand the physiological system and proteome composition underlying Al tolerance, two genotypes [L‐4602 (Al‐tolerant) and BM‐4 (Al‐sensitive)] were studied at the seedling stage. L‐4602 maintained a significantly higher root tolerance index and malate secretion with reduced Al accumulation than BM‐4. Also, label‐free proteomic analysis using ultra‐performance liquid chromatography‐tandem mass spectrometer exhibited significant regulation of Al‐responsive proteins associated with antioxidants, signal transduction, calcium homeostasis, and regulation of glycolysis in L‐4602 as compared to BM‐4. Functional annotation suggested that transporter proteins (transmembrane protein, adenosine triphosphate‐binding cassette transport‐related protein and multi drug resistance protein), antioxidants associated proteins (nicotinamide adenine dinucleotide dependent oxidoreductase, oxidoreductase molybdopterin binding protein & peroxidases), kinases (calmodulin‐domain kinase & protein kinase), and carbohydrate metabolism associated proteins (dihydrolipoamide acetyltransferase) were found to be abundant in tolerant genotype providing protection against Al toxicity. Overall, the root proteome uncovered in this study at seedling stage, along with the physiological parameters measured, allow a greater understanding of Al tolerance mechanism in lentil, thereby assisting in future crop improvement programmes.

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“…The plant cytoskeleton is essential for the maintenance of cell structure. It has three major structural components: microtubules, actin and intermediate filaments (Soda et al ., 2016). Microtubules are a key sensor of stress responses in plants.…”

Section: Discussionmentioning

confidence: 99%

Species-specific epigenetic responses to drought stress of two sympatric oak species reflect their ecological preferences

Rubio,

Provost,

Brachi

et al. 2023

Preprint

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SummaryIn a context of climate change, it is necessary to decipher the strategies established by plants to cope with limited water supply.Transcriptome, methylome and small RNA data were generated for two oak species with contrasting levels of drought tolerance (Quercus roburandQuercus petraea), under control and drought stress conditionsAll data are in line with a species-specific response to drought stress consistent with their ecological preferences. The biological processes associated with genomic regions identified in all datasets were mainly associated with parietal processes inQ. petraea,which may explain in part its better tolerance to water deprivation.A significant proportion of DNA methylation differences observed in control conditions between the two oak species were maintained during DS which may constitute a pool of epigenetic markers discriminating these two oak species. These markers were enriched in highly differentiated SNPs suggesting that some of them may be associated both with the ecological differences or intrinsic barriers to reproduction between the two species.An integrative approach of the three datasets revealed genomic co-locations of potential importance for forest three adaptation to drought stress.

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Abiotic Stress Response in Plants: Role of Cytoskeleton

Cited by 9 publications

References 138 publications

Evidence for thermosensitivity of the cotton (Gossypium hirsutum L.) immature fiber (im) mutant via hypersensitive stomatal activity

Evidence for thermosensitivity of the cotton (Gossypium hirsutum L.) immature fiber (im) mutant via hypersensitive stomatal activity

Physiological and proteomic characterization revealed the response mechanisms underlying aluminium tolerance in lentil (Lens culinaris Medikus)

Species-specific epigenetic responses to drought stress of two sympatric oak species reflect their ecological preferences

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