Research Progress on the Functions of Gasotransmitters in Plant Responses to Abiotic Stresses

Yao, Yandong; Yang, Yan; Li, Changxia; Huang, Dengjing; Zhang, Jing; Wang, Chunlei; Li, Weifang; Wang, Ni; Deng, Yuzheng; Liao, Weibiao

doi:10.3390/plants8120605

Cited by 44 publications

(18 citation statements)

References 121 publications

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“…In addition to NO, two more gaseous signaling molecules (gasotransmitters), hydrogen sulfide (H 2 S), and carbon monoxide (CO) produced within plant cells are an integral part of ABA-dependent stomatal closure as well as other stress conditions. These three gasotransmitters interacted with ABA-signaling during drought ( García-Mata and Lamattina, 2013 ; Yao et al, 2019 ; Gahir et al, 2020 ). Under abiotic stress, ABA could elevate the levels of NO as well as CO or H 2 S. For e.g., ABA activated heme oxygenase (HO), thereby increased CO levels and caused stomatal closure ( Cao et al, 2007 ; Wang and Liao, 2016 ).…”

Section: Aba-interaction With Gasotransmittersmentioning

confidence: 99%

Abscisic Acid-Induced Stomatal Closure: An Important Component of Plant Defense Against Abiotic and Biotic Stress

2021

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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.

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Section: Aba-interaction With Gasotransmittersmentioning

confidence: 99%

Abscisic Acid-Induced Stomatal Closure: An Important Component of Plant Defense Against Abiotic and Biotic Stress

2021

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“…Pro is a kind of organic osmolyte with a wide distribution in plant cells. Previous studies have demonstrated the increase of Pro after the application of signal transmitter agents in defense of abiotic stresses [ 89 , 103 , 104 ]. Pretreatment with exogenous H 2 S increased endogenous Pro content, and the activities and transcription levels of proline-5-carboxylate reductase (P5CR) and proline dehydrogenase (PDH) in foxtail millet, whereas H 2 S scavenger or inhibitor reduced the above effects [ 105 ].…”

Section: Crosstalk Between H 2 S and Other Signal Molecules In Response To Abiotic Stressesmentioning

confidence: 99%

Hydrogen Sulfide in Plants: Crosstalk with Other Signal Molecules in Response to Abiotic Stresses

Wang

Deng

Liu

et al. 2021

IJMS

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Hydrogen sulfide (H2S) has recently been considered as a crucial gaseous transmitter occupying extensive roles in physiological and biochemical processes throughout the life of plant species. Furthermore, plenty of achievements have been announced regarding H2S working in combination with other signal molecules to mitigate environmental damage, such as nitric oxide (NO), abscisic acid (ABA), calcium ion (Ca2+), hydrogen peroxide (H2O2), salicylic acid (SA), ethylene (ETH), jasmonic acid (JA), proline (Pro), and melatonin (MT). This review summarizes the current knowledge within the mechanism of H2S and the above signal compounds in response to abiotic stresses in plants, including maintaining cellular redox homeostasis, exchanging metal ion transport, regulating stomatal aperture, and altering gene expression and enzyme activities. The potential relationship between H2S and other signal transmitters is also proposed and discussed.

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“…Since the past two decades, the role of gasotransmitters in modulating stomatal closure, as a part of plant innate immunity response to protect against biotic/abiotic stress conditions has drawn considerable attention (García-Mata and Lamattina 2013, Scuffi et al 2016, Yao et al 2019. Examples of such gasotransmitters that induce stomatal closure are NO, carbon monoxide (CO) and hydrogen sulfide (H2S).…”

Section: Introductionmentioning

confidence: 99%

The role of gasotransmitters in movement of stomata: mechanisms of action and importance for plant immunity

Gahir¹,

Bharath²,

Raghavendra³

2020

Biol. plant.

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Stomatal guard cells are specialized epidermal cells regulating gas exchange. The ability to open or close in response to external and internal cues makes stomata a dynamic and fascinating system. Stomatal closure upon infection ensures restriction of pathogen entry into the plant and forms an essential component of innate immunity. The opening or closure of stomata is dependent on the turgidity or flaccidity of guard cells, respectively, facilitated by several signaling components, including reactive oxygen species, nitric oxide (NO) and Ca 2+ . Among these, NO is the most extensively studied gasotransmitter. Its pivotal role in stomatal closure by modulating various downstream components as well as regulation of crucial proteins by post-translational modifications makes NO an essential factor. Two more gasotransmitters, carbon monoxide and hydrogen sulfide, also trigger stomatal closure. Other gaseous molecules, like ethylene, methane, sulfur dioxide, ozone, and CO2, can modulate stomatal closure, but they are not considered strictly as gasotransmitters due to specific criteria. We review the signaling events in guard cells triggered by these gasotransmitters leading to stomatal closure. We point out the dual role of NO to promote stomatal closure and stomatal opening. Both NO and H2S help in reinforcing the innate immunity against pathogen attack. Although there is extensive information on the mechanism of NO action on stomata, the enzymatic source of NO or CO is still ambiguous. Similarly, research is warranted to establish the relative importance of and interactions among the three main gasotransmitters. Further studies on gasotransmitters would answer the ambiguity about their functions and confirm if they can act independently.

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Research Progress on the Functions of Gasotransmitters in Plant Responses to Abiotic Stresses

Cited by 44 publications

References 121 publications

Abscisic Acid-Induced Stomatal Closure: An Important Component of Plant Defense Against Abiotic and Biotic Stress

Abscisic Acid-Induced Stomatal Closure: An Important Component of Plant Defense Against Abiotic and Biotic Stress

Hydrogen Sulfide in Plants: Crosstalk with Other Signal Molecules in Response to Abiotic Stresses

The role of gasotransmitters in movement of stomata: mechanisms of action and importance for plant immunity

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