Editorial: Climate change and stress mitigation strategy in plants

COPYRIGHT © 2023 Shukla, Kumar and Kumar. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms. TYPE Editorial PUBLISHED 28 September 2023 DOI 10.3389/fpls.2023.1291905

The selected articles in this Research Topic collectively offer a comprehensive panorama of research perspectives on plant responses to various abiotic stresses.Research involving Abscisic acid-Polyacrylamide (ABA-PAM) treatment has shown promise in enhancing the rhizosphere microbial community and bolstering forage plants' resilience against drought.This significant study offers potential solutions for addressing drought-induced grassland degradation.Additionally, salinity stress represents a critical abiotic challenge hindering plant growth.An enlightening review article delving into plant adaptation strategies to combat salinity stress via osmolyte accumulation, coupled with its interaction with phytohormones, not only enhances our comprehension but also guides the development of climateresilient crops.
Histone deacetylase play an important role in regulation of gene expression through deacetylation.The investigation on histone deacetylase 2 (HD2) protein family in cotton genome revealed their evolutionary relationship and higher expression of GhHDT3D.2 gene in response to drought and salt stress.This study not only sheds light on the evolutionary trajectory of cotton's HD2 genes but also establishes a foundation for future investigations into enhancing drought and salinity stress resilience in cotton.
DnaJ type-I protein belongs to the heat shock protein family, recognized for its pivotal role in protein folding, protein repair and their reactivation-a cornerstone of stress tolerance mechanism in plants.The heterologous expression of DnaJ type-I protein-a homolog of Vigna aconitifolia (VaDJI), revealed its role in ABA insensitivity and multiple stress tolerance in transgenic tobacco plants.This revelation sheds light on VaDJI's mechanisms, elucidating its positive control over drought stress tolerance and ABA signaling-a valuable asset for enhancing drought and heat stress tolerance in crops.Further, the advent of gene editing tool has revolutionized the area of genetic manipulation in plants.A comprehensive review article summarizes the recent breakthroughs, unraveling abiotic stress response mechanisms in plants and unveiling the potency of the CRISPR/Cas-mediated gene-editing system.A spectrum of stressors-drought, salinity, cold, heat, and heavy metals-finds enhanced tolerance through this revolutionary approach.Notably, the review underscores the cutting-edge strides in prime editing and base editing tools, underscoring their potential in crop improvement.
A comprehensive exploration of groundnut's response to heat stress has yielded a noteworthy article.This study identifies genomic regions and candidate genes associated with heat tolerance related traits.Impressively, the investigation uncovered 45 major main effect QTLs controlling 21 agronomic traits.Notably, the research unraveled the presence of three QTL clusters (Cluster-1-Ah03, Cluster-2-Ah12, and Cluster-3-Ah20), harbouring a substantial proportion of the major QTLs (30 out of 45, or 66.6%).These clusters accounting 10.4% to 49.5% phenotypic variance.Further, this study spotlighted important candidate genes within these QTL clusters.These genes include the DHHC-type zinc finger family protein (arahy.J0Y6Y5), FRIGIDA-like protein (arahy.0C3V8Z),Kelch repeat F-box protein (arahy.I7X4PC), Pentatricopeptide repeat-containing protein (arahy.4A4JE9),peptide transporter 1 (arahy.8ZMT0C),and post-illumination chlorophyll fluorescence increase (arahy.92ZGJC)and Ulp1 protease family (arahy.X568GS).Their involvement underscores the genetic basis of heat stress adaptation in groundnut.This study provides a platform for further fine mapping, gene discovery, and the development of markers for genomics-assisted breeding aimed at developing heat-tolerant superior lines/varieties.Abiotic stress response mechanisms in plants.
Moreover, a compelling synergy between elevated CO 2 (eCO 2 ) and selenium nanoparticles (SeNPs) unveiled in wheat plants.Notably, the combined effects of selenium nanoparticles and eCO 2 surpassed the effect of eCO 2 alone.The treatment of SeNPs + eCO 2 yielded remarkable benefits, evidencing enhanced total antioxidant capacity, polyphenols, flavonoids, and total tocopherols within plants.This treatment also culminated in the highest accumulation of photosynthetic pigment content in leaves.While eCO 2 alone exhibited positive effects on Rubisco activity and stomatal conductance, this study fundamentally illuminates the intricate interplay between climate change impacts and crop responses, highlighting the potential of nanoparticle treatments.
Overexpression of peanut (Arachis hypogaea L.) AhGRFi gene in Arabidopsis thaliana led to an enhanced suppression of root growth under exogenous NAA treatment.In addition, this overexpression triggered an upregulation of auxin-responsive genes including IAA3, IAA7, IAA17, and SAUR-AC1, while genes GH3.2 and GH3.3 experienced downregulation in transgenic plants.Notably, the response of genes GH3.2, GH3.3, and SAUR-AC1 showcased contrasting shifts under NAA treatment.These findings collectively indicate the involvement of the 14-3-3 protein in peanut in modulating root growth through intricate auxin signaling pathways.

Conclusions and perspective
The abiotic stress response mechanism in plant is a complex process.This amalgamation of studies significantly advances our understanding of plant responses to abiotic stresses.This Research Topic offers promising avenues for enhancing crop resilience and productivity amidst the dynamic shifts in our climate/in the face of changing climates.We believe that this Research Topic encourages future research in this challenging but vital and fruitful field of study.