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HERO ID
2831384
Reference Type
Journal Article
Title
Peroxisomal NADP-isocitrate dehydrogenase is required for Arabidopsis stomatal movement
Author(s)
Leterrier, M; Barroso, JB; Valderrama, R; Begara-Morales, JC; Sánchez-Calvo, B; Chaki, M; Luque, F; Viñegla, B; Palma, JM; Corpas, FJ
Year
2015
Is Peer Reviewed?
1
Journal
Protoplasma
ISSN:
0033-183X
EISSN:
1615-6102
Volume
253
Issue
2
Page Numbers
403-415
Language
English
PMID
25894616
DOI
10.1007/s00709-015-0819-0
Web of Science Id
WOS:000373578100016
Abstract
Peroxisomes are subcellular organelles characterized by a simple morphological structure but have a complex biochemical machinery involved in signaling processes through molecules such as hydrogen peroxide (H2O2) and nitric oxide (NO). Nicotinamide adenine dinucleotide phosphate (NADPH) is an essential component in cell redox homeostasis, and its regeneration is critical for reductive biosynthesis and detoxification pathways. Plants have several NADPH-generating dehydrogenases, with NADP-isocitrate dehydrogenase (NADP-ICDH) being one of these enzymes. Arabidopsis contains three genes that encode for cytosolic, mitochondrial/chloroplastic, and peroxisomal NADP-ICDH isozymes although the specific function of each of these remains largely unknown. Using two T-DNA insertion lines of the peroxisomal NADP-ICDH designated as picdh-1 and picdh-2, the data show that the peroxisomal NADP-ICDH is involved in stomatal movements, suggesting that peroxisomes are a new element in the signaling network of guard cells.
Keywords
Nitric oxide; Hydrogen peroxide; NADP-isocitrate dehydrogenase; Peroxisomes; Stomata; Guard cells
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