Molecular Mechanisms of Plant Tolerance to Environmental Cues

A special issue of Plants (ISSN 2223-7747). This special issue belongs to the section "Plant Response to Abiotic Stress and Climate Change".

Deadline for manuscript submissions: 30 June 2027 | Viewed by 871

Special Issue Editor


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Guest Editor
College of Forestry and Biotechnology, Zhejiang A&F University, Hangzhou, China
Interests: heat and drought stress; plant molecular biology; plant–pathogen interaction; single-cell RNA sequencing; spatial transcriptomics; stress physiology

Special Issue Information

Dear Colleagues,

Plants constantly encounter complex environmental challenges that activate sophisticated signaling networks involving phytohormones (e.g., abscisic acid, salicylic acid, and jasmonic acid), transcription factors, reactive oxygen and nitrogen species (ROS and RNS), and calcium signaling pathways. These molecular signals coordinate gene expression, protein modifications, and metabolic alteration essential for stress perception and adaptation. Understanding how plants integrate and regulate these responses, including the crosstalk between biotic and abiotic stress pathways and epigenetic modifications, is critical for developing resilient crops capable of withstanding multifactorial stresses under changing climate conditions. Contributions exploring regulatory gene networks, post-translational modifications, stress-responsive proteins, and innovative biotechnological approaches to enhance plant stress tolerance are highly encouraged. This Special Issue aims to compile advanced research elucidating the molecular mechanisms underlying plant tolerance to environmental cues, including both abiotic stresses (such as heat, drought, salinity, and oxidative stress) and biotic stresses caused by pathogens, pests, and herbivores.

We invite researchers to submit original research articles and reviews that make substantial advances within this field.

Dr. Muhammad Ali
Guest Editor

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Keywords

  • plant abiotic stress tolerance
  • signal transduction in plants
  • gene regulation under stress
  • plant–pathogen interaction
  • epigenetics and plant stress
  • molecular adaptation in plants
  • stress-responsive proteins
  • plant stress physiology
  • ROS and RNS

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Published Papers (1 paper)

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Research

19 pages, 4373 KB  
Article
ABSCISIC ACID-INSENSITIVE 5 (ABI5) Orchestrates Seasonal Growth Cessation and Wood Formation Inhibition in Populus tomentosa
by Jianghai Mo, Wenxu Shi, Xiang Liu, Junlong Shen, Hangyu Tang, Changqing Li, Hong Wang, Chengshan Zhang, Keming Luo and Hongbin Wei
Plants 2026, 15(4), 578; https://doi.org/10.3390/plants15040578 - 12 Feb 2026
Viewed by 488
Abstract
Perennial trees in temperate regions precisely coordinate the timing of seasonal growth cessation and dormancy with environmental cues, primarily photoperiod. While the roles of abscisic acid (ABA) in dormancy regulation are well-established, its function in growth cessation remains less defined. ABSCISIC ACID-INSENSITIVE 5 [...] Read more.
Perennial trees in temperate regions precisely coordinate the timing of seasonal growth cessation and dormancy with environmental cues, primarily photoperiod. While the roles of abscisic acid (ABA) in dormancy regulation are well-established, its function in growth cessation remains less defined. ABSCISIC ACID-INSENSITIVE 5 (ABI5) is a basic leucine zipper transcription factor that plays a central role in ABA-mediated development and abiotic stress responses, yet its roles in photoperiodic regulation of growth cessation and its coordination with radial stem growth remain unknown. Here, we demonstrate that in poplar (Populus tomentosa) trees, exogenous ABA application exacerbated short-day (SD)-induced growth inhibition, accelerated bud set, and strongly suppressed secondary xylem formation. We identified a Populus ABI5 homolog, PtoABI5, whose expression is induced by both ABA and SDs. Overexpression of PtoABI5 phenocopied and enhanced SD responses, leading to premature growth cessation and a pronounced inhibition of cambial division and wood formation under SDs. Conversely, PtoABI5 suppressed the expression of the GA biosynthesis gene, while it enhanced the expression of GA catabolic genes. Exogenous GA application partially rescued both the apical growth defects and the impaired secondary xylem development in PtoABI5-overexpressing plants. Our findings establish PtoABI5 as a central integrator, linking ABA and GA signaling pathways to coordinately arrest shoot apical growth and seasonal wood formation, thereby fine-tuning the seasonal growth cycle in perennial trees. Full article
(This article belongs to the Special Issue Molecular Mechanisms of Plant Tolerance to Environmental Cues)
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