Abscisic Acid-Induced Stomatal Closure: An Important Component of Plant Defense Against Abiotic and Biotic Stress.
TLDR
In this paper, the importance of reactive oxygen species (ROS), reactive carbonyl species (RCS), nitric oxide (NO), and Ca2+ in guard cells as key signaling components during the ABA-mediated short-term plant defense reactions was highlighted.Abstract:
Abscisic acid (ABA) is a stress hormone that accumulates under different abiotic and biotic stresses. A typical effect of ABA on leaves is to reduce transpirational water loss by closing stomata and parallelly defend against microbes by restricting their entry through stomatal pores. ABA can also promote the accumulation of polyamines, sphingolipids, and even proline. Stomatal closure by compounds other than ABA also helps plant defense against both abiotic and biotic stress factors. Further, ABA can interact with other hormones, such as methyl jasmonate (MJ) and salicylic acid (SA). Such cross-talk can be an additional factor in plant adaptations against environmental stresses and microbial pathogens. The present review highlights the recent progress in understanding ABA's multifaceted role under stress conditions, particularly stomatal closure. We point out the importance of reactive oxygen species (ROS), reactive carbonyl species (RCS), nitric oxide (NO), and Ca2+ in guard cells as key signaling components during the ABA-mediated short-term plant defense reactions. The rise in ROS, RCS, NO, and intracellular Ca2+ triggered by ABA can promote additional events involved in long-term adaptive measures, including gene expression, accumulation of compatible solutes to protect the cell, hypersensitive response (HR), and programmed cell death (PCD). Several pathogens can counteract and try to reopen stomata. Similarly, pathogens attempt to trigger PCD of host tissue to their benefit. Yet, ABA-induced effects independent of stomatal closure can delay the pathogen spread and infection within leaves. Stomatal closure and other ABA influences can be among the early steps of defense and a crucial component of plants' innate immunity response. Stomatal guard cells are quite sensitive to environmental stress and are considered good model systems for signal transduction studies. Further research on the ABA-induced stomatal closure mechanism can help us design strategies for plant/crop adaptations to stress.read more
Citations
More filters
Journal ArticleDOI
Nitric oxide and hydrogen sulfide: an indispensable combination for plant functioning.
Vipul Kumar Mishra,Pooja Singh,Durgesh Kumar Tripathi,Francisco J. Corpas,Vijay Pratap Singh +4 more
TL;DR: A comprehensive review of the complex networks of these molecules, with particular emphasis on root development, stomatal movement, and plant cell death, was provided in this paper, where the authors showed that NO and H2S are involved in almost all plant physiological and stress-related processes.
Journal ArticleDOI
Inactivating transcription factor OsWRKY5 enhances drought tolerance through abscisic acid signaling pathways.
TL;DR: In this article, the authors showed that the rice WRKY transcription factor OsWRKY5 negatively regulates drought tolerance and showed that it was mainly expressed in developing leaves at the seedling and heading stages and that its expression was reduced by drought stress and by treatment with NaCl, mannitol, and abscisic acid (ABA).
Journal ArticleDOI
γ-Aminobutyrate (GABA) Regulated Plant Defense: Mechanisms and Opportunities
TL;DR: The application of exogenous GABA is associated with lower ROS levels, enhanced membrane stability, changes in the levels of nonenzymatic and enzymatic antioxidants, and crosstalk among phytohormones as mentioned in this paper.
Journal ArticleDOI
Changes in Photosynthesis Could Provide Important Insight into the Interaction between Wheat and Fungal Pathogens.
Huai Yang,Peigao Luo +1 more
TL;DR: It is generally found that changes in photosynthesis in the early stage of pathogen infection could be a causal factor influencing acquired resistance, while those in the late stage could be the result of resistance formation.
Journal ArticleDOI
Electrical Signals, Plant Tolerance to Actions of Stressors, and Programmed Cell Death: Is Interaction Possible?
TL;DR: In this paper, the authors hypothesize that programmed cell death (PCD) in plant cells can be interconnected with electrical signals (ESs) and show that generation of ESs accompanies K+ efflux from the cytoplasm that is also a probable mechanism of PCD initiation.
References
More filters
Journal ArticleDOI
Abiotic Stress Signaling and Responses in Plants
TL;DR: Core stress-signaling pathways involve protein kinases related to the yeast SNF1 and mammalian AMPK, suggesting that stress signaling in plants evolved from energy sensing.
Journal ArticleDOI
Plant Stomata Function in Innate Immunity against Bacterial Invasion
TL;DR: Examination of stomatal guard cells of Arabidopsis provides evidence that supports a model in which stomata, as part of an integral innate immune system, act as a barrier against bacterial infection.
Journal ArticleDOI
Hormone Crosstalk in Plant Disease and Defense: More Than Just JASMONATE-SALICYLATE Antagonism
TL;DR: Recent advances are reported, updating current knowledge on classical defense hormones SA, JA, and ET, and the roles of auxin, abscisic acid (ABA), cytokinins (CKs), and brassinosteroids in molding plant-pathogen interactions are updated.
Journal ArticleDOI
Plant hormone-mediated regulation of stress responses.
TL;DR: The intricate web of crosstalk among the often redundant multitudes of signaling intermediates is just beginning to be understood and future research employing genome-scale systems biology approaches to solve problems of such magnitude will undoubtedly lead to better understanding of plant development.
Journal ArticleDOI
Antagonistic Interaction between Abscisic Acid and Jasmonate-Ethylene Signaling Pathways Modulates Defense Gene Expression and Disease Resistance in Arabidopsis
Jonathan P. Anderson,Jonathan P. Anderson,Ellet Badruzsaufari,Ellet Badruzsaufari,Peer M. Schenk,John M. Manners,John M. Manners,Olivia J. Desmond,Olivia J. Desmond,Christina Ehlert,Donald J. Maclean,Donald J. Maclean,Paul R. Ebert,Paul R. Ebert,Kemal Kazan,Kemal Kazan +15 more
TL;DR: The results indicate that the antagonistic interactions between multiple components of ABA and the JA-ethylene signaling pathways modulate defense and stress responsive gene expression in response to biotic and abiotic stresses.