Article (Scientific journals)
METHYLENE BLUE SENSITIVITY 1 (MBS1) is required for acclimation of Arabidopsis to singlet oxygen and acts downstream of beta-cyclocitral.
Shumbe, Léonard; D'Alessandro, Stefano; Shao, Ning et al.
2017In Plant, Cell and Environment, 40 (2), p. 216-226
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Keywords :
Acclimatization/radiation effects; Aldehydes/pharmacology; Arabidopsis/genetics/growth & development/physiology/radiation effects; Arabidopsis Proteins/genetics/metabolism; Diterpenes/pharmacology; Gene Expression Regulation, Plant/drug effects/radiation effects; Green Fluorescent Proteins/metabolism; Light; Mutation/genetics; Phenotype; Photosynthesis/radiation effects; Plant Leaves/physiology/radiation effects; Singlet Oxygen/pharmacology; Stress, Physiological/radiation effects; carotenoid oxidation; high light stress; signalling
Abstract :
[en] Singlet oxygen ((1) O2 ) signalling in plants is essential to trigger both acclimatory mechanisms and programmed cell death under high light stress. However, because of its chemical features, (1) O2 requires mediators, and the players involved in this pathway are largely unknown. The beta-carotene oxidation product, beta-cyclocitral, is one such mediator. Produced in the chloroplast, beta-cyclocitral induces changes in nuclear gene expression leading to photoacclimation. Recently, the METHYLENE BLUE SENSITIVITY protein MBS has been identified as a key player in (1) O2 signalling leading to tolerance to high light. Here, we provide evidence that MBS1 is essential for acclimation to (1) O2 and cross-talks with beta-cyclocitral to mediate transfer of the (1) O2 signal to the nucleus, leading to photoacclimation. The presented results position MBS1 downstream of beta-cyclocitral in (1) O2 signalling and suggest an additional role for MBS1 in the regulation of plant growth and development under chronic (1) O2 production.
Disciplines :
Phytobiology (plant sciences, forestry, mycology...)
Author, co-author :
Shumbe, Léonard ;  Université de Liège - ULiège > Agronomie, Bio-ingénierie et Chimie (AgroBioChem) > Ingénierie des productions végétales et valorisation
D'Alessandro, Stefano
Shao, Ning
Chevalier, Anne
Ksas, Brigitte
Bock, Ralph
Havaux, Michel
Language :
English
Title :
METHYLENE BLUE SENSITIVITY 1 (MBS1) is required for acclimation of Arabidopsis to singlet oxygen and acts downstream of beta-cyclocitral.
Publication date :
2017
Journal title :
Plant, Cell and Environment
ISSN :
0140-7791
eISSN :
1365-3040
Publisher :
Blackwell, Oxford, United Kingdom
Volume :
40
Issue :
2
Pages :
216-226
Peer reviewed :
Peer Reviewed verified by ORBi
Commentary :
(c) 2016 John Wiley & Sons Ltd.
Available on ORBi :
since 19 January 2019

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