Hydrogen Sulfide Activates S-Type Anion Channel via OST1 and Ca 2+ Modules

Wang, Lei; Wan, Renjing; Shi, Yunhao; Xue, Shaowu

doi:10.1016/j.molp.2015.11.010

Cited by 47 publications

(31 citation statements)

References 10 publications

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“…At the same time, protein kinase OST1 functions in H2S-induced activated SLAC1 channel currents (Wang et al, 2016). These electrophysiological results accurately showed H2S-induced stomatal closure through numerous ions flow.…”

Section: +supporting

confidence: 55%

Hydrogen sulfide: the shutter button of stomata in plants

Jin

Pei

2016

Sci. China Life Sci.

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Section: +supporting

confidence: 55%

Hydrogen sulfide: the shutter button of stomata in plants

Jin

Pei

2016

Sci. China Life Sci.

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“…Sulfide, a metabolite in the sulfate assimilation pathway, has been reported to induce stomatal closure (Scuffi et al, 2014;Honda et al, 2015;Wang et al, 2016). To test the requirement of functional sulfur metabolism, we analyzed whether sulfate induces stomatal closure in mutants lacking the ability to produce sulfide (sir1-1) and those unable to incorporate sulfide into Cys (serat tko).…”

Section: Sulfate Assimilation Is Essential For Sulfate-induced Stomatmentioning

confidence: 99%

“…Sulfide is primarily produced in leaves by sulfite reductase (SiR), which catalyzes the last and committed step of sulfate reduction (Khan et al, 2010). However, the mode of action of sulfate or sulfide on stomata closure has not been identified due to the dual nature of these compounds as potential signaling molecules and as part of the primary metabolic network (Scuffi et al, 2014;Honda et al, 2015;Wang et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Sulfate is Incorporated into Cysteine to Trigger ABA Production and Stomatal Closure

et al. 2018

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Plants close stomata when root water availability becomes limiting. Recent studies have demonstrated that soil-drying induces root-to-shoot sulfate transport via the xylem and that sulfate closes stomata. Here we provide evidence for a physiologically relevant signaling pathway that underlies sulfate-induced stomatal closure in Arabidopsis (Arabidopsis thaliana). We uncovered that, in the guard cells, sulfate activates NADPH oxidases to produce reactive oxygen species (ROS) and that this ROS induction is essential for sulfate-induced stomata closure. In line with the function of ROS as the secondmessenger of abscisic acid (ABA) signaling, sulfate does not induce ROS in the ABA-synthesis mutant, aba3-1, and sulfateinduced ROS were ineffective at closing stomata in the ABA-insensitive mutant abi2-1 and a SLOW ANION CHANNEL1 loss-of-function mutant. We provided direct evidence for sulfate-induced accumulation of ABA in the cytosol of guard cells by application of the ABAleon2.1 ABA sensor, the ABA signaling reporter ProRAB18:GFP, and quantification of endogenous ABA marker genes. In concordance with previous studies, showing that ABA DEFICIENT3 uses Cys as the substrate for activation of the ABSCISIC ALDEHYDE OXIDASE3 (AAO3) enzyme catalyzing the last step of ABA production, we demonstrated that assimilation of sulfate into Cys is necessary for sulfate-induced stomatal closure and that sulfate-feeding or Cys-feeding induces transcription of NINE-CIS-EPOXYCAROTENOID DIOXYGENASE3, limiting the synthesis of the AAO3 substrate. Consequently, Cys synthesis-depleted mutants are sensitive to soil-drying due to enhanced water loss. Our data demonstrate that sulfate is incorporated into Cys and tunes ABA biosynthesis in leaves, promoting stomatal closure, and that this mechanism contributes to the physiological water limitation response.

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“…Our previous work also showed that heat shock could improve the resistance of maize seedlings to heat, chilling, salt, and drought stress (Gong et al, 2001). Numerous studies found that the acquisition of stress tolerance including cross-adaptation was involved in a complex signal network consisting of many second messengers such as Ca 2+ , abscisic acid (ABA), hydrogen peroxide (H 2 O 2 ) and nitric oxide (NO), as well as their crosstalk (Knight, 2000; Pandey, 2015; Li and Gu, 2016; Li and Jin, 2016; Niu and Liao, 2016; Wang et al, 2016). In tobacco, mechanical stimulation can successively trigger H 2 O 2 and NO signaling (Li and Gong, 2011, 2013), heat shock can induce Ca 2+ and ABA signaling one after the other (Gong et al, 1998a,b), which in turn induce cross-adaptation to heat and chilling stress, similar results were reported by Gong et al (2001) in maize seedlings.…”

Section: Introductionmentioning

confidence: 99%

Hydrogen Sulfide: A Signal Molecule in Plant Cross-Adaptation

2016

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For a long time, hydrogen sulfide (H2S) has been considered as merely a toxic by product of cell metabolism, but nowadays is emerging as a novel gaseous signal molecule, which participates in seed germination, plant growth and development, as well as the acquisition of stress tolerance including cross-adaptation in plants. Cross-adaptation, widely existing in nature, is the phenomenon in which plants expose to a moderate stress can induce the resistance to other stresses. The mechanism of cross-adaptation is involved in a complex signal network consisting of many second messengers such as Ca2+, abscisic acid, hydrogen peroxide and nitric oxide, as well as their crosstalk. The cross-adaptation signaling is commonly triggered by moderate environmental stress or exogenous application of signal molecules or their donors, which in turn induces cross-adaptation by enhancing antioxidant system activity, accumulating osmolytes, synthesizing heat shock proteins, as well as maintaining ion and nutrient balance. In this review, based on the current knowledge on H2S and cross-adaptation in plant biology, H2S homeostasis in plant cells under normal growth conditions; H2S signaling triggered by abiotic stress; and H2S-induced cross-adaptation to heavy metal, salt, drought, cold, heat, and flooding stress were summarized, and concluded that H2S might be a candidate signal molecule in plant cross-adaptation. In addition, future research direction also has been proposed.

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Hydrogen Sulfide Activates S-Type Anion Channel via OST1 and Ca 2+ Modules

Abstract: Voltage (mV) Voltage (mV) Voltage (mV) Voltage (mV) Current (pA) Current (pA) Current (pA) Current (pA) Voltage (mV)

Cited by 47 publications

References 10 publications

Hydrogen sulfide: the shutter button of stomata in plants

Hydrogen sulfide: the shutter button of stomata in plants

Sulfate is Incorporated into Cysteine to Trigger ABA Production and Stomatal Closure

Hydrogen Sulfide: A Signal Molecule in Plant Cross-Adaptation

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