Plant Aquaporin AtPIP1;4 Links Apoplastic H<sub>2</sub>O<sub>2</sub> Induction to Disease Immunity Pathways

Tian, Shan; Wang, Xiaobing; Li, Ping; Wang, Hao; Ji, Hongtao; Xie, Jiankun; Qiu, Qinglei; Shen, Dan; Dong, Hansong

doi:10.1104/pp.15.01237

Cited by 248 publications

(241 citation statements)

References 73 publications

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“…The peroxisomal H 2 O 2 -scavenging system minimizes the oxidative damage to vulnerable cellular constituents and the failure to dissipate photorespiratory H 2 O 2 triggers redox signaling pathways (Mhamdi et al, 2012;Sandalio and Romero-Puertas, 2015). Among the ROS, H 2 O 2 has the highest potential to act as a signaling molecule because of its relative stability, ability to cross membranes (Bienert et al, 2007;Tian et al, 2016), and role in posttranslational modification of cysteine and methionine residues in target proteins (Waszczak et al, 2014(Waszczak et al, , 2015Jacques et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

SHORT-ROOT Deficiency Alleviates the Cell Death Phenotype of the Arabidopsis catalase2 Mutant under Photorespiration-Promoting Conditions

et al. 2016

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Hydrogen peroxide (H 2 O 2 ) can act as a signaling molecule that influences various aspects of plant growth and development, including stress signaling and cell death. To analyze molecular mechanisms that regulate the response to increased H 2 O 2 levels in plant cells, we focused on the photorespiration-dependent peroxisomal H 2 O 2 production in Arabidopsis thaliana mutants lacking CATALASE2 (CAT2) activity (cat2-2). By screening for second-site mutations that attenuate the PSII maximum efficiency (F v '/F m ') decrease and lesion formation linked to the cat2-2 phenotype, we discovered that a mutation in SHORT-ROOT (SHR) rescued the cell death phenotype of cat2-2 plants under photorespiration-promoting conditions. SHR deficiency attenuated H 2 O 2 -dependent gene expression, oxidation of the glutathione pool, and ascorbate depletion in a cat2-2 genetic background upon exposure to photorespiratory stress. Decreased glycolate oxidase and catalase activities together with accumulation of glycolate further implied that SHR deficiency impacts the cellular redox homeostasis by limiting peroxisomal H 2 O 2 production. The photorespiratory phenotype of cat2-2 mutants did not depend on the SHR functional interactor SCARECROW and the sugar signaling component ABSCISIC ACID INSENSITIVE4, despite the requirement for exogenous sucrose for cell death attenuation in cat2-2 shr-6 double mutants. Our findings reveal a link between SHR and photorespiratory H 2 O 2 production that has implications for the integration of developmental and stress responses.

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Section: Introductionmentioning

confidence: 99%

SHORT-ROOT Deficiency Alleviates the Cell Death Phenotype of the Arabidopsis catalase2 Mutant under Photorespiration-Promoting Conditions

et al. 2016

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“…Another model for recognition of apoplastic ROS signal assumes intracellular perception of apoplastic H 2 O 2 upon import through aquaporins. Indeed, the H 2 O 2 transport by plant aquaporins has been demonstrated in yeast cells (Bienert et al, 2007;Hooijmaijers et al, 2012), and a recent study by Tian et al (2016) provided evidence for occurrence of such events in planta. Finally, the apoplastic ROS could directly affect the activity of ion channels leading to stomatal closure.…”

Section: Ros Sensing In Guard Cell Signalingmentioning

confidence: 99%

Reactive Oxygen Species in the Regulation of Stomatal Movements

Sierla

Waszczak²,

Vahisalu³

et al. 2016

Plant Physiol.

199

137

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“…Import of H 2 O 2 through aquaporins is a wellrecognized mechanism in animal cells (Satooka and HaraChikuma, 2016). However, while the H 2 O 2 permeability of plant aquaporins was documented a decade ago (Bienert et al, 2007), its functional significance has been described only recently (Tian et al, 2016). It remains unclear how imported H 2 O 2 avoids intracellular ROS scavengers and how cells differentiate between imported and intracellular ROS.…”

Section: Intracellular Sensing Of Apoplastic Rosmentioning

confidence: 99%

Bound by Fate: The Role of Reactive Oxygen Species in Receptor-Like Kinase Signaling

et al. 2017

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In plants, receptor-like kinases (RLKs) and extracellular reactive oxygen species (ROS) contribute to the communication between the environment and the interior of the cell. Apoplastic ROS production is a frequent result of RLK signaling in a multitude of cellular processes; thus, by their nature, these two signaling components are inherently linked. However, it is as yet unclear how ROS signaling downstream of receptor activation is executed. In this review, we provide a broad view of the intricate connections between RLKs and ROS signaling and describe the regulatory events that control and coordinate extracellular ROS production. We propose that concurrent initiation of ROS-dependent and -independent signaling linked to RLKs might be a critical element in establishing cellular responses. Furthermore, we discuss the possible ROS sensing mechanisms in the context of the biochemical environment in the apoplast. We suggest that RLK-dependent modulation of apoplastic and intracellular conditions facilitates ROS perception and signaling. Based on data from plant and animal models, we argue that specific RLKs could be components of the ROS sensing machinery or ROS sensors. The importance of the crosstalk between RLK and ROS signaling is discussed in the context of stomatal immunity. Finally, we highlight challenges in the understanding of these signaling processes and provide perspectives for future research.

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Plant Aquaporin AtPIP1;4 Links Apoplastic H₂O₂ Induction to Disease Immunity Pathways

Cited by 248 publications

References 73 publications

SHORT-ROOT Deficiency Alleviates the Cell Death Phenotype of the Arabidopsis catalase2 Mutant under Photorespiration-Promoting Conditions

SHORT-ROOT Deficiency Alleviates the Cell Death Phenotype of the Arabidopsis catalase2 Mutant under Photorespiration-Promoting Conditions

Reactive Oxygen Species in the Regulation of Stomatal Movements

Bound by Fate: The Role of Reactive Oxygen Species in Receptor-Like Kinase Signaling

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Plant Aquaporin AtPIP1;4 Links Apoplastic H2O2 Induction to Disease Immunity Pathways

Cited by 248 publications

References 73 publications

SHORT-ROOT Deficiency Alleviates the Cell Death Phenotype of the Arabidopsis catalase2 Mutant under Photorespiration-Promoting Conditions

SHORT-ROOT Deficiency Alleviates the Cell Death Phenotype of the Arabidopsis catalase2 Mutant under Photorespiration-Promoting Conditions

Reactive Oxygen Species in the Regulation of Stomatal Movements

Bound by Fate: The Role of Reactive Oxygen Species in Receptor-Like Kinase Signaling

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Product

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Plant Aquaporin AtPIP1;4 Links Apoplastic H₂O₂ Induction to Disease Immunity Pathways