Molecular Mechanisms of Plant Stress Adaptation

A special issue of Biology (ISSN 2079-7737). This special issue belongs to the section "Plant Science".

Deadline for manuscript submissions: 31 December 2024 | Viewed by 473

Special Issue Editor


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Guest Editor
College of Life Science, Northwest A & F University, Yangling 712100, China
Interests: plant functional genomics; plant stress biology; molecular mechanisms of plant response to abiotic stresses
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

In the face of ever-changing environmental conditions, plants have evolved remarkable molecular mechanisms to cope with various stressors. The field of molecular mechanisms of plant stress explores the intricate processes by which plants sense, signal, and respond to adverse conditions. Understanding these molecular mechanisms is crucial for developing strategies to enhance plant resilience, improve crop productivity, and ensure global food security in the face of climate change and other environmental challenges.

It is my pleasure to present this Special Issue on Molecular Mechanisms of Plant Stress Adaptation in this esteemed journal. There are a number of research articles in this issue that delve into the molecular processes underlying plant stress adaptation. This area of plant biology will provide us with a better understanding of how plants respond to different environmental stresses, allowing us to develop new strategies for increasing crop resilience and productivity.

The aim of this Special Issue, "Molecular Mechanisms of Plant Stress Adaptation", is to elucidate the molecular mechanisms and signaling networks involved in plant stress adaptation. This Special Issue covers a wide range of topics, including hormonal regulation, genetic factors, epigenetic modifications, reactive oxygen species signaling, nutrient sensing, and metabolic adaptations in plants under stress. This issue aims to advance our understanding and foster innovative strategies for improving crop resilience and productivity by exploring the molecular mechanisms underlying plant stress adaptation. In order to contribute to understanding molecular mechanisms underlying plant stress adaptation, researchers around the world were invited to submit original research articles, reviews, and perspectives.

Dr. Wenqiang Li
Guest Editor

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Keywords

  • plant adaptation
  • environmental stress
  • molecular mechanism
  • genetic improvement
  • stress tolerance

Published Papers (1 paper)

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Research

23 pages, 2070 KiB  
Article
Exogenous Glycinebetaine Regulates the Contrasting Responses in Leaf Physiochemical Attributes and Growth of Maize under Drought and Flooding Stresses
by Guo-Yun Wang, Shakeel Ahmad, Bing-Wei Wang, Li-Bo Shi, Yong Wang, Cheng-Qiao Shi and Xun-Bo Zhou
Biology 2024, 13(6), 360; https://doi.org/10.3390/biology13060360 - 21 May 2024
Viewed by 110
Abstract
Flooding and drought are the two most devastating natural hazards limiting maize production. Exogenous glycinebetaine (GB), an osmotic adjustment agent, has been extensively used but there is limited research on its role in mitigating the negative effects of different abiotic stresses. This study [...] Read more.
Flooding and drought are the two most devastating natural hazards limiting maize production. Exogenous glycinebetaine (GB), an osmotic adjustment agent, has been extensively used but there is limited research on its role in mitigating the negative effects of different abiotic stresses. This study aims to identify the different roles of GB in regulating the diverse defense regulation of maize against drought and flooding. Hybrids of Yindieyu 9 and Heyu 397 grown in pots in a ventilated greenhouse were subjected to flooding (2–3 cm standing layer) and drought (40–45% field capacity) at the three-leaf stage for 8 d. The effects of different concentrations of foliar GB (0, 0.5, 1.0, 5.0, and 10.0 mM) on the physiochemical attributes and growth of maize were tested. Greater drought than flooding tolerance in both varieties to combat oxidative stress was associated with higher antioxidant activities and proline content. While flooding decreased superoxide dismutase and guaiacol peroxidase (POD) activities and proline content compared to normal water, they all declined with stress duration, leading to a larger reactive oxygen species compared to drought. It was POD under drought stress and ascorbate peroxidase under flooding stress that played crucial roles in tolerating water stress. Foliar GB further enhanced antioxidant ability and contributed more effects to POD to eliminate more hydrogen peroxide than the superoxide anion, promoting growth, especially for leaves under water stress. Furthermore, exogenous GB made a greater increment in Heyu 397 than Yindieyu 9, as well as flooding compared to drought. Overall, a GB concentration of 5.0 mM, with a non-toxic effect on well-watered maize, was determined to be optimal for the effective mitigation of water-stress damage to the physiochemical characteristics and growth of maize. Full article
(This article belongs to the Special Issue Molecular Mechanisms of Plant Stress Adaptation)
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