Salicylic acid receptor NPR1 is involved in guard cell chitosan signaling

Prodhan, Yeasin; Issak, Mohammad; Munemasa, Shintaro; Nakamura, Yoshimasa; Murata, Yoshiyuki

doi:10.1080/09168451.2020.1718485

Cited by 11 publications

(3 citation statements)

References 30 publications

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“…Our preliminary study using BiFC analysis indicated that this might be the case in Arabidopsis (data not shown). A recent study found that NPR1 is involved in guard cell chitosan signaling (Prodhan et al, 2020). As we confirmed suppression of l ‐Glu‐dependent stomatal signaling in the npr1‐1 mutant, it may be that SRK2E/OST1 modifies the NPR1 functions controlled by l ‐Glu signaling.…”

Section: Discussionmentioning

confidence: 99%

l‐Glutamate activates salicylic acid signaling to promote stomatal closure and PR1 expression in Arabidopsis

Tsuruda

Yoshida

2023

Physiologia Plantarum

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Glutamate (l‐Glu), an animal neurotransmitter, plays an essential role in plant signaling and regulates various plant physiological responses. We previously showed that l‐Glu regulates stomatal closure in Arabidopsis via the glutamate receptor‐like 3.5 gene (GLR3.5). Here, we showed that l‐Glu activates salicylic acid (SA) signaling in Arabidopsis. l‐Glu not only promoted stomatal closure but also triggered the expression of the PR1 gene via GLR3.5. These l‐Glu‐dependent actions were strongly suppressed in SA‐insensitive npr1‐1 and SA‐deficient sid2‐2 mutants, indicating that SA is involved in l‐Glu signaling. A loss‐of‐function mutant of the gene encoding the SRK2E/OST1 kinase, which plays a pivotal role in abscisic acid signaling, was insensitive to both l‐Glu‐induced stomatal closure and PR1 expression. The glr3.5 mutants did not alleviate SA‐induced stomatal closure, indicating that SA may function downstream of GLR3.5. These results indicate that l‐Glu activates SA signaling, and that SRK2E/OST1 may play pivotal roles in such signaling.

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Section: Discussionmentioning

confidence: 99%

l‐Glutamate activates salicylic acid signaling to promote stomatal closure and PR1 expression in Arabidopsis

Tsuruda

Yoshida

2023

Physiologia Plantarum

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“…Recently, a new mechanism was revealed that NPR1 facilitated its own expression by recruiting WRKY18 and CDK8 to the promoter of NPR1 , leading the increased expression of the PR gene ( Chen et al, 2019 ). NPR1 , as SA receptor, involved in the chitosan-induced stomata closure and thus played a vital role in adjust to the adverse environments in plants ( Prodhan et al, 2020 ). The proteins NPR3 and NPR4 bind SA and their function is transcriptional co-repressor and they are partly redundant in their function ( Fu et al, 2012 ).…”

Section: Introductionmentioning

confidence: 99%

Genome-wide identification, evolution, and expression analysis of the NPR1-like gene family in pears

Wei

Zhao

Liu

et al. 2021

PeerJ

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The NONEXPRESSOR OF PATHOGENESIS-RELATED GENES 1 (NPR1) plays a master regulatory role in the salicylic acid (SA) signal transduction pathway and plant systemic acquired resistance (SAR). Members of the NPR1-like gene family have been reported to the associated with biotic/abiotic stress in many plants, however the genome-wide characterization of NPR1-like genes has not been carried out in Chinese pear (Pyrus bretschneideri Reld). In this study, a systematic analysis was conducted on the characteristics of the NPR1-like genes in P. bretschneideri Reld at the whole-genome level. A total nine NPR1-like genes were detected which eight genes were located on six chromosomes and one gene was mapped to scaffold. Based on the phylogenetic analysis, the nine PbrNPR1-like proteins were divided into three clades (Clades I–III) had similar gene structure, domain and conserved motifs. We sorted the cis-acting elements into three clades, including plant growth and development, stress responses, and hormone responses in the promoter regions of PbrNPR1-like genes. The result of qPCR analysis showed that expression diversity of PbrNPR1-like genes in various tissues. All the genes were up-regulated after SA treatment in leaves except for Pbrgene8896. PbrNPR1-like genes showed circadian rhythm and significantly different expression levels after inoculation with Alternaria alternata. These findings provide a solid insight for understanding the functions and evolution of PbrNPR1-like genes in Chinese pear.

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“…Inducing the defense response can be achieved by plant defense inducers or elicitors, which modulate some responses in the plants [6], and chitosan is in this group. This polymer is recognized as a microbe-associated molecular template (MAMP) because its structure is very similar to that of fungal cell wall fragments [7].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the Physicochemical Properties of Chitosans in Inducing the Defense Response of Coffea arabica against the Fungus Hemileia vastatrix

et al. 2021

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Chitosan is a natural polymer, and its biological properties depend on factors such as the degree of deacetylation and polymerization, viscosity, molecular mass, and dissociation constant. Chitosan has multiple advantages: it is biodegradable, biocompatible, safe, inexpensive, and non-toxic. Due to these characteristics, it has a wide range of applications. In agriculture, one of the most promising properties of chitosan is as an elicitor in plant defense against pathogenic microorganisms. In this work, four kinds of chitosan (practical grade, low molecular weight, medium molecular weight, and high-density commercial food grade) were used in concentrations of 0.01 and 0.05% to evaluate its protective effect against coffee rust. The best treatment was chosen to evaluate the defense response in coffee plants. The results showed a protective effect using practical-grade and commercial food-grade chitosan. In addition, the activity of enzymes with β-1,3 glucanase and peroxidase was induced, and an increase in the amount of phenolic compounds was observed in plants treated with high-molecular-weight chitosan at 0.05%; therefore, chitosan can be considered an effective molecule for controlling coffee rust.

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Salicylic acid receptor NPR1 is involved in guard cell chitosan signaling

Cited by 11 publications

References 30 publications

l‐Glutamate activates salicylic acid signaling to promote stomatal closure and PR1 expression in Arabidopsis

l‐Glutamate activates salicylic acid signaling to promote stomatal closure and PR1 expression in Arabidopsis

Genome-wide identification, evolution, and expression analysis of the NPR1-like gene family in pears

Evaluation of the Physicochemical Properties of Chitosans in Inducing the Defense Response of Coffea arabica against the Fungus Hemileia vastatrix

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