Signaling responses and their role in the mitigation of abiotic stresses

Tanpure, Rahul S.; Ghuge, Sandip A.; Dawkar, Vishal V.; Kumar, Anil

doi:10.1016/b978-0-12-822849-4.00008-5

Cited by 2 publications

(2 citation statements)

References 142 publications

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“…In response to cold stress, the production of ROS and NO mediates the alterations in chromatin structure and coordinates modification of histone and DNA methylation to activate the expression of stress-responsive genes ( Kim, 2021 ; Tanpure et al, 2021 ). In eukaryotes, chromatin is organized as repeating subunits called nucleosome consisting of 147 bp DNA wrapped around a histone octamer containing four different histone proteins, H2A, H2B, H3, and H4 present in pairs.…”

Section: Transcriptional Reprogramming Involving Chromatin Modificati...mentioning

confidence: 99%

Fine-Tuning Cold Stress Response Through Regulated Cellular Abundance and Mechanistic Actions of Transcription Factors

2022

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Inflictions caused by cold stress can result in disastrous effects on the productivity and survival of plants. Cold stress response in plants requires crosstalk between multiple signaling pathways including cold, heat, and reactive oxygen species (ROS) signaling networks. CBF, MYB, bHLH, and WRKY families are among the TFs that function as key players in the regulation of cold stress response at the molecular level. This review discusses some of the latest understanding on the regulation of expression and the mechanistic actions of plant TFs to address cold stress response. It was shown that the plant response consists of early and late responses as well as memory reprogramming for long-term protection against cold stress. The regulatory network can be differentiated into CBF-dependent and independent pathways involving different sets of TFs. Post-transcriptional regulation by miRNAs, control during ribosomal translation process, and post-translational regulation involving 26S proteosomic degradation are processes that affect the cellular abundance of key regulatory TFs, which is an important aspect of the regulation for cold acclimation. Therefore, fine-tuning of the regulation by TFs for adjusting to the cold stress condition involving the dynamic action of protein kinases, membrane ion channels, adapters, and modifiers is emphasized in this review.

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Section: Transcriptional Reprogramming Involving Chromatin Modificati...mentioning

confidence: 99%

Fine-Tuning Cold Stress Response Through Regulated Cellular Abundance and Mechanistic Actions of Transcription Factors

2022

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“…The traditional approach to engineer plants for improved abiotic stress tolerance entails interruption at various stages of the response, from sensors and signaling/regulatory elements (such as kinases, transcription factors) to effectors like osmoprotectants, phytohormones, antioxidant enzymes, and heatshock proteins (Tanpure et al, 2021). Ramireddy et al (2018) created transgenic barley plants with an expanded root system by accelerating cytokinin breakdown in the roots by the production of a cytokinin oxidase/dehydrogenase under the control of rootspecific rice promoters.…”

Section: Metabolism and Signal Transduction Of Cytokininsmentioning

confidence: 99%

Cytokinin biosynthesis in cyanobacteria: Insights for crop improvement

Uniyal

Bhandari²,

Singh³

et al. 2022

Front. Genet.

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Cytokinins, a type of phytohormones that induce division of cytoplasm, have considerable value in agriculture due to their influences on several physiological processes of plants such as morphogenesis, development of chloroplast, seed dormancy, leaf senescence, etc. Previously, it was assumed that plants obtain cytokinin from the soil produced by microbes as these hormones were first discovered in soil-inhabiting bacteria i.e., Agrobacterium tumefaciens. Later, the cytokinin biosynthesis gene, i.e., ipt gene, has been reported in plants too. Though plants synthesize cytokinins, several studies have reported that the exogenous application of cytokinins has numerous beneficial effects including the acceleration of plant growth and boosting economic yield. Cyanobacteria may be employed in the soil not only as the source of cytokinins but also as the source of other plant growth-promoting metabolites. These organisms biosynthesize the cytokinins using the enzyme isopentenyl transferases (IPTs) in a fashion similar to the plants; however, there are few differences in the biosynthesis mechanism of cytokinins in cyanobacteria and plants. Cytokinins are important for the establishment of interaction between plants and cyanobacteria as evidenced by gene knockout experiments. These hormones are also helpful in alleviating the adverse effects of abiotic stresses on plant development. Cyanobacterial supplements in the field result in the induction of adventitious roots and shoots on petiolar as well as internodal segments. The leaf, root, and stem explants of certain plants exhibited successful regeneration when treated with cyanobacterial extract/cell suspension. These successful regeneration practices mark the way of cyanobacterial deployment in the field as a great move toward the goal of sustainable agriculture.

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Signaling responses and their role in the mitigation of abiotic stresses

Cited by 2 publications

References 142 publications

Fine-Tuning Cold Stress Response Through Regulated Cellular Abundance and Mechanistic Actions of Transcription Factors

Fine-Tuning Cold Stress Response Through Regulated Cellular Abundance and Mechanistic Actions of Transcription Factors

Cytokinin biosynthesis in cyanobacteria: Insights for crop improvement

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