Reactive Oxygen Species, Photosynthesis, and Environment in the Regulation of Stomata

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http://hdl.handle.net/10138/315081

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Ehonen , S , Yarmolinsky , D , Kollist , H & Kangasjärvi , J 2019 , ' Reactive Oxygen Species, Photosynthesis, and Environment in the Regulation of Stomata ' , Antioxidants & Redox Signaling , vol. 30 , no. 9 , pp. 1220-1237 . https://doi.org/10.1089/ars.2017.7455

Title: Reactive Oxygen Species, Photosynthesis, and Environment in the Regulation of Stomata
Author: Ehonen, Sanna; Yarmolinsky, Dmitry; Kollist, Hannes; Kangasjärvi, Jaakko
Contributor: University of Helsinki, Biosciences
University of Helsinki, University of Tartu
University of Helsinki, Viikki Plant Science Centre (ViPS)
Date: 2019-03-01
Number of pages: 18
Belongs to series: Antioxidants & Redox Signaling
ISSN: 1523-0864
URI: http://hdl.handle.net/10138/315081
Abstract: Significance: Stomata sense the intercellular carbon dioxide (CO2) concentration (C-i) and water availability under changing environmental conditions and adjust their apertures to maintain optimal cellular conditions for photosynthesis. Stomatal movements are regulated by a complex network of signaling cascades where reactive oxygen species (ROS) play a key role as signaling molecules. Recent Advances: Recent research has uncovered several new signaling components involved in CO2- and abscisic acid-triggered guard cell signaling pathways. In addition, we are beginning to understand the complex interactions between different signaling pathways. Critical Issues: Plants close their stomata in reaction to stress conditions, such as drought, and the subsequent decrease in C-i leads to ROS production through photorespiration and over-reduction of the chloroplast electron transport chain. This reduces plant growth and thus drought may cause severe yield losses for agriculture especially in arid areas. Future Directions: The focus of future research should be drawn toward understanding the interplay between various signaling pathways and how ROS, redox, and hormonal balance changes in space and time. Translating this knowledge from model species to crop plants will help in the development of new drought-resistant crop species with high yields. Antioxid. Redox Signal. 00, 000-000.
Subject: 1182 Biochemistry, cell and molecular biology
stomata
CO2
ABA
guard cells
photosynthesis
ROS
ARABIDOPSIS GUARD-CELLS
WATER-USE EFFICIENCY
OST1 PROTEIN-KINASE
COMMELINA-COMMUNIS L
NADPH OXIDASE RBOHD
ABSCISIC-ACID
HYDROGEN-PEROXIDE
ANION CHANNEL
BLUE-LIGHT
VICIA-FABA
GUARD-CELL PHOTOSYNTHESIS
SIGNAL-TRANSDUCTION
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