Universität zu Köln

Bangash, Sajid A. K., Mueller-Schuessele, Stefanie J., Solbach, David, Jansen, Marcus, Fiorani, Fabio, Schwarzlaender, Markus, Kopriva, Stanislav ORCID: 0000-0002-7416-6551 and Meyer, Andreas J. (2019). Low-glutathione mutants are impaired in growth but do not show an increased sensitivity to moderate water deficit. PLoS One, 14 (10). SAN FRANCISCO: PUBLIC LIBRARY SCIENCE. ISSN 1932-6203

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Abstract

yGlutathione is considered a key metabolite for stress defense and elevated levels have frequently been proposed to positively influence stress tolerance. To investigate whether glutathione affects plant performance and the drought tolerance of plants, wild-type Arabidopsis plants and an allelic series of five mutants (rax1, pad2, cad2, nrc1, and zir1) with reduced glutathione contents between 21 and 63% compared to wild-type glutathione content were phenotypically characterized for their shoot growth under control and water-limiting conditions using a shoot phenotyping platform. Under non-stress conditions the zir1 mutant with only 21% glutathione showed a pronounced dwarf phenotype. All other mutants with intermediate glutathione contents up to 62% in contrast showed consistently slightly smaller shoots than the wild-type. Moderate drought stress imposed through water withdrawal until shoot growth ceased showed that wild-type plants and all mutants responded similarly in terms of chlorophyll fluorescence and growth retardation. These results lead to the conclusion that glutathione is important for general plant performance but that the glutathione content does not affect tolerance to moderate drought conditions typically experienced by crops in the field.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Bangash, Sajid A. K. UNSPECIFIED UNSPECIFIED UNSPECIFIED Mueller-Schuessele, Stefanie J. UNSPECIFIED UNSPECIFIED UNSPECIFIED Solbach, David UNSPECIFIED UNSPECIFIED UNSPECIFIED Jansen, Marcus UNSPECIFIED UNSPECIFIED UNSPECIFIED Fiorani, Fabio UNSPECIFIED UNSPECIFIED UNSPECIFIED Schwarzlaender, Markus UNSPECIFIED UNSPECIFIED UNSPECIFIED Kopriva, Stanislav UNSPECIFIED orcid.org/0000-0002-7416-6551 UNSPECIFIED Meyer, Andreas J. UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-130644
DOI:	10.1371/journal.pone.0220589
Journal or Publication Title:	PLoS One
Volume:	14
Number:	10
Date:	2019
Publisher:	PUBLIC LIBRARY SCIENCE
Place of Publication:	SAN FRANCISCO
ISSN:	1932-6203
Language:	English
Faculty:	Faculty of Mathematics and Natural Sciences
Divisions:	Faculty of Mathematics and Natural Sciences > Department of Biology > Botanical Institute
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language ARABIDOPSIS-THALIANA; STRESS TOLERANCE; GENE-EXPRESSION; HYDROGEN-PEROXIDE; REVEALS; DROUGHT; ASCORBATE; RESPONSES; PLANTS; LEAF Multiple languages Multidisciplinary Sciences Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/13064