ABA says NO to UV-B: a universal response?

Tossi, Vanesa; Cassia, Raúl; Bruzzone, Santina; Zocchi, Elena; Lamattina, Lorenzo

doi:10.1016/j.tplants.2012.05.007

Cited by 89 publications

(51 citation statements)

References 70 publications

(80 reference statements)

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“…Then, through a NO synthaselike-dependent mechanism, NO production increases to maintain cell homeostasis and attenuate UV-Binduced cell damage (Tossi et al, 2009). Moreover, we suggested that ABA is a component of the UV-B response both in plant and animal cells (Tossi et al, 2012).…”

Section: Uv-b For 3 H (+Uv-b) or Not In Controls (-Uv-b)mentioning

confidence: 90%

“…For example, NO acts as a signal in disease resistance (Delledonne, 2005), regulates stomatal closure (García-Mata and Lamattina, 2001), and stimulates germination (Beligni and Lamattina, 2000). NO has also been proposed to be a broad-spectrum antistress molecule CorreaAragunde et al, 2007), because it confers protection against oxidative stress produced by diquat, UV-B, drought, and salt (Beligni and Lamattina, 2000;García-Mata and Lamattina, 2001;Zhao et al, 2004;Shi et al, 2005;Tossi et al, 2009Tossi et al, , 2011Tossi et al, , 2012. It was reported that NO increases as a consequence of UV-B irradiation in bacteria, animals, and plants (Seo et al, 2002;An et al, 2005;Qu et al, 2006).…”

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confidence: 99%

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Ultraviolet-B-Induced Stomatal Closure in Arabidopsis Is Regulated by the UV RESISTANCE LOCUS8 Photoreceptor in a Nitric Oxide-Dependent Mechanism

et al. 2014

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UV RESISTANCE LOCUS8 (UVR8) signaling involves CONSTITUTIVELY PHOTOMORPHOGENIC1, the ELONGATED HYPOCOTYL5 (HY5) transcription factor, and the closely related HY5 HOMOLOG. Some UV-B responses mediated by UVR8 are also regulated by nitric oxide (NO), a bioactive molecule that orchestrates a wide range of processes in plants. In this study, we investigated the participation of the UVR8 pathway and its interaction with NO in UV-B-induced stomatal movements in Arabidopsis (Arabidopsis thaliana). Stomata in abaxial epidermal strips of Arabidopsis ecotype Landsberg erecta closed in response to increasing UV-B fluence rates, with maximal closure after 3-h exposure to 5.46 mmol m -2 s -1 UV-B. Both hydrogen peroxide (H 2 O 2 ) and NO increased in response to UV-B, and stomatal closure was maintained by NO up to 24 h after the beginning of exposure. Stomata of plants expressing bacterial NO dioxygenase, which prevents NO accumulation, did not close in response to UV-B, although H 2 O 2 still increased. When the uvr8-1 null mutant was exposed to UV-B, stomata remained open, irrespective of the fluence rate. Neither NO nor H 2 O 2 increased in stomata of the uvr8-1 mutant. However, the NO donor S-nitrosoglutathione induced closure of uvr8-1 stomata to the same extent as in the wild type. Experiments with mutants in UVR8 signaling components implicated CONSTITUTIVELY PHOTOMORPHOGENIC1, HY5, and HY5 HOMOLOG in UV-B-induced stomatal closure. This research provides evidence that the UVR8 pathway regulates stomatal closure by a mechanism involving both H 2 O 2 and NO generation in response to UV-B exposure.

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Section: Uv-b For 3 H (+Uv-b) or Not In Controls (-Uv-b)mentioning

confidence: 90%

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confidence: 99%

Ultraviolet-B-Induced Stomatal Closure in Arabidopsis Is Regulated by the UV RESISTANCE LOCUS8 Photoreceptor in a Nitric Oxide-Dependent Mechanism

et al. 2014

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“…NO and ABA are the two most important stress-related molecules that intensively cross talk during environmental challenges like drought to induce plant adaptive responses such as stomatal closure and activation of antioxidant machinery [5,11]. Evidence suggests that NO acts downstream of ABA as decreased NO synthesis reduces ABA-induced responses in plant tissues exposed to stress conditions [12,13]. However, NO is also reported to counteract ABA during events not linked to stress adaptation such as breaking of seed dormancy [14,15].…”

Section: No-phytohormone Cross Talk Under Drought Stressmentioning

confidence: 99%

Cross Talk between Nitric Oxide and Phytohormones Regulate Plant Development during Abiotic Stresses

Nawaz¹,

Shabbir²,

Shahbaz³

et al. 2017

Phytohormones - Signaling Mechanisms and Crosstalk in Plant Development and Stress Responses

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Plants, being sessile, are concurrently exposed to various biotic and abiotic stresses. The perception of stress signals in plants involves a wide spectrum of signal transduction pathways that interact to induce tolerance against adverse environmental conditions. This functional overlapping among various stress signaling cascades also leads to the expression of genes that regulate biosynthesis or action of other hormones. Phytohormonal signals, activated by both developmental and environmental responses, play a crucial role to develop stress tolerance in plants. Nitric oxide (NO) is one of the major players in plant signaling networks. Emerging evidence supports that NO interplays with signaling pathways of auxins, gibberellins, abscisic acid, ethylene, jasmonic acid, brassinosteroids, and other plant hormones to control metabolism, growth, and development in plants. This chapter focuses on the current state of knowledge of cross talk between signaling pathways of NO and phytohormones in plants exposed to various abiotic stresses.

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“…ABA fails to induce ROS production in the atrbohD/F double mutant (Kwak et al, 2003;Wang et al, 2012) and NO synthesis in the NR-deficient mutant nitrate reductase1/2 (nia1/2; Bright et al, 2006;Neill et al, 2008), both of which lead to impaired stomatal closure in Arabidopsis. Most importantly, ROS and NO, which function both synergistically and independently, have been established as ubiquitous signal transduction components to control a diverse range of physiological pathways in higher plants (Bright et al, 2006;Tossi et al, 2012).…”

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Reactive Oxygen Species-Dependent Nitric Oxide Production Contributes to Hydrogen-Promoted Stomatal Closure in Arabidopsis

et al. 2014

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The signaling role of hydrogen gas (H 2 ) has attracted increasing attention from animals to plants. However, the physiological significance and molecular mechanism of H 2 in drought tolerance are still largely unexplored. In this article, we report that abscisic acid (ABA) induced stomatal closure in Arabidopsis (Arabidopsis thaliana) by triggering intracellular signaling events involving H 2 , reactive oxygen species (ROS), nitric oxide (NO), and the guard cell outward-rectifying K + channel (GORK). ABA elicited a rapid and sustained H 2 release and production in Arabidopsis. Exogenous hydrogen-rich water (HRW) effectively led to an increase of intracellular H 2 production, a reduction in the stomatal aperture, and enhanced drought tolerance. Subsequent results revealed that HRW stimulated significant inductions of NO and ROS synthesis associated with stomatal closure in the wild type, which were individually abolished in the nitric reductase mutant nitrate reductase1/2 (nia1/2) or the NADPH oxidasedeficient mutant rbohF (for respiratory burst oxidase homolog). Furthermore, we demonstrate that the HRW-promoted NO generation is dependent on ROS production. The rbohF mutant had impaired NO synthesis and stomatal closure in response to HRW, while these changes were rescued by exogenous application of NO. In addition, both HRW and hydrogen peroxide failed to induce NO production or stomatal closure in the nia1/2 mutant, while HRW-promoted ROS accumulation was not impaired. In the GORK-null mutant, stomatal closure induced by ABA, HRW, NO, or hydrogen peroxide was partially suppressed. Together, these results define a main branch of H 2 -regulated stomatal movement involved in the ABA signaling cascade in which RbohF-dependent ROS and nitric reductase-associated NO production, and subsequent GORK activation, were causally involved.

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ABA says NO to UV-B: a universal response?

Cited by 89 publications

References 70 publications

Ultraviolet-B-Induced Stomatal Closure in Arabidopsis Is Regulated by the UV RESISTANCE LOCUS8 Photoreceptor in a Nitric Oxide-Dependent Mechanism

Ultraviolet-B-Induced Stomatal Closure in Arabidopsis Is Regulated by the UV RESISTANCE LOCUS8 Photoreceptor in a Nitric Oxide-Dependent Mechanism

Cross Talk between Nitric Oxide and Phytohormones Regulate Plant Development during Abiotic Stresses

Reactive Oxygen Species-Dependent Nitric Oxide Production Contributes to Hydrogen-Promoted Stomatal Closure in Arabidopsis

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