Neither Endogenous Abscisic Acid nor Endogenous Jasmonate Is Involved in Salicylic Acid-, Yeast Elicitor-, or Chitosan-Induced Stomatal Closure in<i>Arabidopsis thaliana</i>

Issak, Mohammad; Okuma, Eiji; Munemasa, Shintaro; Nakamura, Yoshimasa; Mori, Izumi C.; Murata, Yoshiyuki

doi:10.1271/bbb.120980

Cited by 26 publications

(19 citation statements)

References 17 publications

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“…While both ABA and jasmonic acid have both been found to raise in concentration in response to chitosan treatment [114,120], and it is well-documented that these hormones are involved in the control of stomatal aperture [170], it was recently shown that the stomatal closure recorded after chitosan treatment does not involve JA and ABA signaling. This conclusion was reached because JA/ABA mutants still respond to chitosan with stomatal closure [171].…”

Section: Physiological Responses To Chitin Treatmentmentioning

confidence: 96%

A Review of the Applications of Chitin and Its Derivatives in Agriculture to Modify Plant-Microbial Interactions and Improve Crop Yields

2013

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Abstract:In recent decades, a greater knowledge of chitin chemistry, and the increased availability of chitin-containing waste materials from the seafood industry, have led to the testing and development of chitin-containing products for a wide variety of applications in the agriculture industry. A number of modes of action have been proposed for how chitin and its derivatives can improve crop yield. In addition to direct effects on plant nutrition and plant growth stimulation, chitin-derived products have also been shown to be toxic to plant pests and pathogens, induce plant defenses and stimulate the growth and activity of beneficial microbes. A repeating theme of the published studies is that chitin-based treatments augment and amplify the action of beneficial chitinolytic microbes. This article reviews the evidence for claims that chitin-based products can improve crop yields and the current understanding of the modes of action with a focus on plant-microbe interactions.

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Section: Physiological Responses To Chitin Treatmentmentioning

confidence: 96%

A Review of the Applications of Chitin and Its Derivatives in Agriculture to Modify Plant-Microbial Interactions and Improve Crop Yields

2013

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“…However, another report showed that endogenous ABA is not involved in SA‐induced stomatal closure because SA can induce stomatal closure not only in Arabidopsis wildtype plants but also in ABA‐deficient aba2 mutant plants. Moreover, SA‐induced stomatal closure was accompanied by the production of ROS mediated by salicylhydroxamic acid‐sensitive peroxidases (Issak et al ., ). Taken together, these lines of evidence suggest that ABA and SA coordinately regulate ROS production in response to drought and pathogen invasion; however, these signalling pathways are independent of each other.…”

Section: Specificity Of Ros Signallingmentioning

confidence: 97%

Behind the scenes: the roles of reactive oxygen species in guard cells

2013

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1121I.1121II.1122III.1125IV.1129V.11331134References1134 Summary Guard cells regulate stomatal pore size through integration of both endogenous and environmental signals; they are widely recognized as providing a key switching mechanism that maximizes both the efficient use of water and rates of CO2 exchange for photosynthesis; this is essential for the adaptation of plants to water stress. Reactive oxygen species (ROS) are widely considered to be an important player in guard cell signalling. In this review, we focus on recent progress concerning the role of ROS as signal molecules in controlling stomatal movement, the interaction between ROS and intrinsic and environmental response pathways, the specificity of ROS signalling, and how ROS signals are sensed and relayed. However, the picture of ROS‐mediated signalling is still fragmented and the issues of ROS sensing and the specificity of ROS signalling remain unclear. Here, we review some recent advances in our understanding of ROS signalling in guard cells, with an emphasis on the main players known to interact with abscisic acid signalling.

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“…SA‐deficient mutants can close in response to ABA, but ABA‐deficient ( aba2 ) plants did not close stomata in response to SA (Zeng & He, ). More recently, it has been suggested that aba2 plants can close in response to SA (Issak et al ., ). As there was more than an order of magnitude difference in SA concentrations between the two studies, these results may not be as contradictory as they first seem.…”

Section: Stimulus‐induced Closurementioning

confidence: 97%

Gate control: guard cell regulation by microbial stress

2014

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Contents 1049I.1049II.1050III.1055IV.1057V.10581059References1059 Summary Terrestrial plants rely on stomata, small pores in the leaf surface, for photosynthetic gas exchange and transpiration of water. The stomata, formed by a pair of guard cells, dynamically increase and decrease their volume to control the pore size in response to environmental cues. Stresses can trigger similar or opposing movements: for example, drought induces closure of stomata, whereas many pathogens exploit stomata and cause them to open to facilitate entry into plant tissues. The latter is an active process as stomatal closure is part of the plant's immune response. Stomatal research has contributed much to clarify the signalling pathways of abiotic stress, but guard cell signalling in response to microbes is a relatively new area of research. In this article, we discuss present knowledge of stomatal regulation in response to microbes and highlight common points of convergence, and differences, compared to stomatal regulation by abiotic stresses. We also expand on the mechanisms by which pathogens manipulate these processes to promote disease, for example by delivering effectors to inhibit closure or trigger opening of stomata. The study of pathogen effectors in stomatal manipulation will aid our understanding of guard cell signalling.

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Neither Endogenous Abscisic Acid nor Endogenous Jasmonate Is Involved in Salicylic Acid-, Yeast Elicitor-, or Chitosan-Induced Stomatal Closure inArabidopsis thaliana

Cited by 26 publications

References 17 publications

A Review of the Applications of Chitin and Its Derivatives in Agriculture to Modify Plant-Microbial Interactions and Improve Crop Yields

A Review of the Applications of Chitin and Its Derivatives in Agriculture to Modify Plant-Microbial Interactions and Improve Crop Yields

Behind the scenes: the roles of reactive oxygen species in guard cells

Gate control: guard cell regulation by microbial stress

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