Systemic Signaling during Abiotic Stress in Plants

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: closed (31 March 2023) | Viewed by 6575

Special Issue Editor


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Guest Editor
Department of Biological Sciences, Pusan National University, Busan, Korea
Interests: plant-microbe interaction; abiotic stress tolerance; plant physiology;

Special Issue Information

Dear Colleagues,

In the presence of extreme environmental conditions, such as heat, salinity, and a decrease in water availability, plants can suffer a devastating impact on their growth and productivity, with the possibility that entire ecosystems could collapse. Systemic signaling and systemic acquired acclimation (SAA) are essential to the survival of plants during abiotic stress episodes. Microorganisms, the most common inhabitants of diverse environments, are capable of mitigating abiotic stress through their metabolic capabilities. It is well known that plants–microbe interactions involve a number of complex mechanisms within the plant's cellular system. Research in the field of biochemistry, molecular biology, and physiology is paving the way for a better understanding of the complex yet integrated functions of the cells. This Special Issue of Plants will highlight “Systemic Signaling during Abiotic Stress in Plants” and discuss current knowledge on the role of microbe-mediated mitigation under abiotic stress.

Dr. Gah-Hyun Lim
Guest Editor

Manuscript Submission Information

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Keywords

  • systemic acquired acclimation (SAA)
  • systemic signaling
  • plant–microbe interaction

Published Papers (2 papers)

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Research

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25 pages, 1841 KiB  
Article
Recent Developments in the Application of Plant Growth-Promoting Drought Adaptive Rhizobacteria for Drought Mitigation
by Ayomide Emmanuel Fadiji, Ma. del Carmen Orozco-Mosqueda, Sergio de los Santos-Villalobos, Gustavo Santoyo and Olubukola Oluranti Babalola
Plants 2022, 11(22), 3090; https://doi.org/10.3390/plants11223090 - 14 Nov 2022
Cited by 14 | Viewed by 2630
Abstract
Drought intensity that has increased as a result of human activity and global warming poses a serious danger to agricultural output. The demand for ecologically friendly solutions to ensure the security of the world’s food supply has increased as a result. Plant growth-promoting [...] Read more.
Drought intensity that has increased as a result of human activity and global warming poses a serious danger to agricultural output. The demand for ecologically friendly solutions to ensure the security of the world’s food supply has increased as a result. Plant growth-promoting rhizobacteria (PGPR) treatment may be advantageous in this situation. PGPR guarantees the survival of the plant during a drought through a variety of processes including osmotic adjustments, improved phytohormone synthesis, and antioxidant activity, among others and these mechanisms also promote the plant’s development. In addition, new developments in omics technology have improved our understanding of PGPR, which makes it easier to investigate the genes involved in colonizing plant tissue. Therefore, this review addresses the mechanisms of PGPR in drought stress resistance to summarize the most current omics-based and molecular methodologies for exploring the function of drought-responsive genes. The study discusses a detailed mechanistic approach, PGPR-based bioinoculant design, and a potential roadmap for enhancing their efficacy in combating drought stress. Full article
(This article belongs to the Special Issue Systemic Signaling during Abiotic Stress in Plants)
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Review

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12 pages, 888 KiB  
Review
Salicylic Acid and Mobile Regulators of Systemic Immunity in Plants: Transport and Metabolism
by Tae-Jin Kim and Gah-Hyun Lim
Plants 2023, 12(5), 1013; https://doi.org/10.3390/plants12051013 - 23 Feb 2023
Cited by 10 | Viewed by 3612
Abstract
Systemic acquired resistance (SAR) occurs when primary infected leaves produce several SAR-inducing chemical or mobile signals that are transported to uninfected distal parts via apoplastic or symplastic compartments and activate systemic immunity. The transport route of many chemicals associated with SAR is unknown. [...] Read more.
Systemic acquired resistance (SAR) occurs when primary infected leaves produce several SAR-inducing chemical or mobile signals that are transported to uninfected distal parts via apoplastic or symplastic compartments and activate systemic immunity. The transport route of many chemicals associated with SAR is unknown. Recently, it was demonstrated that pathogen-infected cells preferentially transport salicylic acid (SA) through the apoplasts to uninfected areas. The pH gradient and deprotonation of SA may lead to apoplastic accumulation of SA before it accumulates in the cytosol following pathogen infection. Additionally, SA mobility over a long distance is essential for SAR, and transpiration controls the partitioning of SA into apoplasts and cuticles. On the other hand, glycerol-3-phosphate (G3P) and azelaic acid (AzA) travel via the plasmodesmata (PD) channel in the symplastic route. In this review, we discuss the role of SA as a mobile signal and the regulation of SA transport in SAR. Full article
(This article belongs to the Special Issue Systemic Signaling during Abiotic Stress in Plants)
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