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Physiology and Molecular Biology of Plant Stress Tolerance: 2nd Edition

A special issue of International Journal of Molecular Sciences (ISSN 1422-0067). This special issue belongs to the section "Molecular Plant Sciences".

Deadline for manuscript submissions: 20 June 2025 | Viewed by 911

Special Issue Editor


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Guest Editor
College of Horticulture & Landscape Architecture, Northeast Agricultural University, Harbin 150030, China
Interests: transcription factors in abiotic stress (cold, drought, salt, etc.) and response of fruit
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Special Issue Information

Dear Colleagues,

Plants in the natural environment are constantly challenged by changes in the environment, including abiotic and biotic stresses. Abiotic stresses such as drought, salt, heat, cold, and nutrient deficiency adversely affect plant growth, development, and productivity. Biotic stress, such as bacteria, viruses, fungi, parasites, beneficial and harmful insects, weeds, and cultivated or native plants, is a major focus of agricultural research due to the vast economic losses caused to cash crops. Plants have evolved a series of regulatory mechanisms to cope with stress in the process of adapting to abiotic or biotic stress. Studying the regulatory mechanisms of plant stress tolerance to adversity is beneficial in selecting excellent resistant varieties.

This Special Issue aims to provide a platform for research on the physiology and molecular biology of plant stress tolerance. We believe that this Special Issue will be helpful to researchers and to the improvement of plants’ tolerance to stresses in the future. We welcome your submission of original papers and reviews containing molecular results.

Prof. Dr. De-Guo Han
Guest Editor

Manuscript Submission Information

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Keywords

  • plant–pathogen interactions
  • biotic and abiotic stress
  • plant innate immunity
  • phytohormones
  • genes

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Published Papers (1 paper)

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Research

23 pages, 6614 KiB  
Article
5-Aminolevulinic Acid (5-ALA)-Induced Drought Resistance in Maize Seedling Root at Physiological and Transcriptomic Levels
by Yaqiong Shi, Zihao Jin, Jingyi Wang, Guangkuo Zhou, Fang Wang and Yunling Peng
Int. J. Mol. Sci. 2024, 25(23), 12963; https://doi.org/10.3390/ijms252312963 - 2 Dec 2024
Viewed by 613
Abstract
Drought stress seriously affects the growth, development, yield, and quality of maize. This study aimed to investigate the effects of exogenous 5-ALA on root morphology and physiological changes in maize seedlings and to detect its regulatory network. The results showed that adding 25 [...] Read more.
Drought stress seriously affects the growth, development, yield, and quality of maize. This study aimed to investigate the effects of exogenous 5-ALA on root morphology and physiological changes in maize seedlings and to detect its regulatory network. The results showed that adding 25 mg/L 5-ALA accelerated root morphogenesis (root average diameter, main root length, total root length, and root surface area) and promoted dry matter accumulation and free radical removal. Transcriptome analysis showed that after applying exogenous 5-ALA, differently expressed genes (DEGs) were mainly involved in histidine metabolism, amino acid biosynthesis, plasma membrane components, secondary active sulfate transmembrane transporter activity, and anion reverse transporter activity. Two inbred lines specifically responded to organelle and structural molecular activity, and 5-ALA may regulate maize roots to achieve drought tolerance through these two pathways. In addition, candidate genes that may regulate maize root growth were screened by weighted gene co-expression network analysis (WGCNA). These genes may play important roles in alleviating drought stress through lignin synthesis, heat shock proteins, iron storage and transport, calcium binding proteins, and plasma membrane regulation of exogenous regulator 5-ALA. Our results may provide a theoretical basis for clarifying the response of maize seedling roots to drought and the mechanism of exogenous hormones in alleviating drought. Full article
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