Hydrogen Peroxide Is Involved in Abscisic Acid-Induced Stomatal Closure in Vicia faba
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...ABA-induced ROS synthesis also occurs in Vicia faba(132), but ROS production occurs at the plasma membrane and in the chloroplast....
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2,872 citations
2,229 citations
Cites background from "Hydrogen Peroxide Is Involved in Ab..."
...…signals for ABA in mediating Catalase 1 gene (CAT1) expression (Guan et al., 2000), thermotelerance (Gong et al., 1998), activation of Ca2 channels in guard cells (Pei et al., 2000), stomatal closure (e.g., Pei et al., 2000; Zhang et al., 2001), and even ABA biosynthesis (Zhao et al., 2001)....
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2,039 citations
Cites background from "Hydrogen Peroxide Is Involved in Ab..."
...Recent studies have shown that ABA sensitizes these channels, apparently by enhancing the production of reactive oxygen species (ROS; e.g., H2O2) that can serve as secondary messengers leading to channel activation (Pei et al., 2000; Zhang et al., 2001)....
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1,682 citations
References
5,450 citations
"Hydrogen Peroxide Is Involved in Ab..." refers background in this paper
...In plant cells, the most important reducing substrate for H2O2 removal is ascorbic acid (Noctor and Foyer, 1998)....
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...These dangerous cascades are prevented by efficient operation of the cell’s antioxidant defense (Noctor and Foyer, 1998)....
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2,740 citations
"Hydrogen Peroxide Is Involved in Ab..." refers background or methods in this paper
...V. faba epidermal tissues were treated with 1 m ABA in the presence of either 100 units mL 1 catalase (CAT) or 10 m diphenylene iodonium (DPI), which either remove H2O2 or reduce the generation of H2O2, respectively (Levine et al., 1994; Alvarez et al., 1998; Lee et al., 1999)....
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...…is thought to be a second messenger, which can both orchestrate the plant hypersensitive disease resistance by initialing a series of reactions (Levine et al., 1994) and mediate systemic signaling in the establishment of plant immunity 1 This work was supported by the National Natural Science…...
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2,603 citations
"Hydrogen Peroxide Is Involved in Ab..." refers background in this paper
...It is well known that high doses of H2O2 are cytotoxic (Bowler et al., 1992; Scandalios, 1993)....
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...Earlier studies have indicated that the production of ROS is indirectly increased by stresses such as drought and chilling (Bowler et al., 1992; Fryer, 1992)....
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...…oxygen may be proceeded by a series of single electron transfers, which generates reactive oxygen species (ROS), such as superoxide anion (O2 ), hydrogen peroxide (H2O2), and other free radicals that react with, and thereby damage DNA, proteins, and lipids (Bowler et al., 1992; Scandalios, 1993)....
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1,975 citations
"Hydrogen Peroxide Is Involved in Ab..." refers background or result in this paper
...Although the role of H2O2 as an intermediate in ABA signaling in guard cells has been clearly examined in Arabidopsis plants (Pei et al., 2000), it was not known whether H2O2 acts as a second messenger for the induction of stomatal closure in response to ABA in other plants, and where is the source…...
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...The direct recording of Ca 2 currents have resulted recently in a breakthrough (Hamilton et al., 2000; Pei et al., 2000), leading to the discovery of H2O2-activated Ca 2 channels as an important part of the mechanism for ABA-induced stomatal closure (Pei et al., 2000)....
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...) or H2O2 has a remarkable effect on stomatal aperture (Price, 1990), and exogenous H 2O2 can also induce [Ca 2 ]i increases in guard cells (McAinsh et al., 1996; Pei et al., 2000), comprising one or two separate transient increases, which are necessary for stomatal closure (Allen et al., 2000)....
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...Here, we provide new evidence that H2O2 is involved in ABA-induced stomatal movement in V. faba, which is consistent with recent findings in Arabidopsis plants (Pei et al., 2000)....
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...Furthermore, Ca2 channels and anion channels at the plasma membrane of stomatal guard cells are activated by hyperpolarization and ABA (Pei et al., 2000; Allen et al., 2000; Hamilton et al., 2000; Li et al., 2000), and an increase in [Ca2 ]i resulting from the activation of Ca2 channels leading to…...
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1,645 citations
"Hydrogen Peroxide Is Involved in Ab..." refers background in this paper
...It is important to keep the low level of H2O2 in the cells under optimal conditions, because the oxidative stress, resulting from ROS, is harmful to cell (Scandalios, 1993)....
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...It is well known that high doses of H2O2 are cytotoxic (Bowler et al., 1992; Scandalios, 1993)....
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...In fact, various environmental perturbations (e.g. intense light, drought, temperature stress, etc.) can induce excessive ROS, which may overwhelm the defense system and necessitate additional defense (Scandalios, 1993; Foyer et al., 1994)....
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...…oxygen may be proceeded by a series of single electron transfers, which generates reactive oxygen species (ROS), such as superoxide anion (O2 ), hydrogen peroxide (H2O2), and other free radicals that react with, and thereby damage DNA, proteins, and lipids (Bowler et al., 1992; Scandalios, 1993)....
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