Molecular Mechanisms of Plant Stress Regulation

A special issue of Plants (ISSN 2223-7747). This special issue belongs to the section "Plant Molecular Biology".

Deadline for manuscript submissions: closed (31 December 2025) | Viewed by 1136

Special Issue Editor


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Guest Editor
Department of Biology and Microbiology, South Dakota State University, Brookings, SD 57007, USA
Interests: crop improvement; crop-wild relatives; molecular mechanism of stress regulations; gene family evolution; plant molecular systematics; bioinformatics; genomics/genetics

Special Issue Information

Dear Colleagues,

Plants constantly face a variety of environmental stresses, both biotic and abiotic, which can significantly impact their growth and productivity. Understanding the molecular mechanisms underlying plant stress responses is important for developing resilient crops that can thrive under adverse conditions. This Special Issue of Plants aims to explore the latest research on the molecular pathways and regulatory networks involved in plant stress regulation. We invite submissions that provide insights into the roles of key genes, proteins, and metabolites in stress perception, signal transduction, and adaptive responses. Studies employing cutting-edge techniques in genomics, transcriptomics, proteomics, and metabolomics to dissect these complex mechanisms are particularly welcome. By shedding light on the intricate molecular processes that plants use to cope with both biotic and abiotic stresses, this Special Issue seeks to contribute to the advancement of sustainable agriculture and food security.

Prof. Dr. Madhav Nepal
Guest Editor

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Keywords

  • plant stress
  • molecular regulation
  • crop improvement
  • omics
  • stress responsive gene
  • stress regulation networks
  • sustainable agriculture

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Published Papers (1 paper)

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Research

19 pages, 4724 KB  
Article
Molecular Insights into the Role of PcHSP20s in Mediating Thermotolerance in Polygonatum cyrtonema
by Jianbo Song, Chengyan Tu, Shuling Liu, Xuemei Yan, Ling Fu, Xiao Tang, Hongyang Yu and Liming Zeng
Plants 2026, 15(4), 619; https://doi.org/10.3390/plants15040619 - 15 Feb 2026
Viewed by 562
Abstract
Small heat shock proteins (HSP20s) are known to function as molecular chaperones that bind to denatured proteins under high-temperature stress and assist in their conformational recovery, thereby contributing to plant thermotolerance. In the present study, three HSP20 genes—PcHSP12.8, PcHSP12.9, and [...] Read more.
Small heat shock proteins (HSP20s) are known to function as molecular chaperones that bind to denatured proteins under high-temperature stress and assist in their conformational recovery, thereby contributing to plant thermotolerance. In the present study, three HSP20 genes—PcHSP12.8, PcHSP12.9, and PcHSP13.4—were identified in the transcriptome of Polygonatum cyrtonema Hua. Bioinformatics analysis indicated their phylogenetic relationships, conserved domains, and potential tertiary structures. RT-qPCR analysis revealed up-regulation of all three genes in response to heat stress. Subcellular localization studies further suggested that PcHSP12.8, PcHSP12.9, and PcHSP13.4 are predominantly localized in the nucleus. Heterologous expression of these genes in a heat-sensitive yeast mutant appeared to improve cell survival under heat stress relative to the control strain. In Arabidopsis thaliana overexpressing these genes, moderate improvements in germination rate, root elongation, and stress survival were observed compared to wild-type plants under heat stress. Transgenic lines also showed a tendency toward reduced reactive oxygen species accumulation, as reflected by decreased 3,3′-diaminobenzidine (DAB) and nitroblue tetrazolium (NBT) staining, together with increased activities of catalase (CAT) and peroxidase (POD), as well as higher chlorophyll retention under thermal stress. Taken together, these findings imply that the three PcHSP20 genes could be involved in thermotolerance in P. cyrtonema. Full article
(This article belongs to the Special Issue Molecular Mechanisms of Plant Stress Regulation)
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