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Complex phenotypic profiles leading to ozone sensitivity in Arabidopsis thaliana mutants

Overmyer, K and Kollist, H and Tuominen, H and Betz, C and Langebartels, C and Wingsle, G and Kangasjärvi, S and Brader, G and Mullineaux, P and Kangasjärvi, J (2008) 'Complex phenotypic profiles leading to ozone sensitivity in Arabidopsis thaliana mutants.' Plant, Cell and Environment, 31 (9). 1237 - 1249. ISSN 0140-7791

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Abstract

Genetically tractable model plants offer the possibility of defining the plant O3 response at the molecular level. To this end, we have isolated a collection of ozone (O3)-sensitive mutants of Arabidopsis thaliana. Mutant phenotypes and genetics were characterized. Additionally, parameters associated with O3 sensitivity were analysed, including stomatal conductance, sensitivity to and accumulation of reactive oxygen species, antioxidants, stress gene-expression and the accumulation of stress hormones. Each mutant has a unique phenotypic profile, with O3 sensitivity caused by a unique set of alterations in these systems. O 3 sensitivity in these mutants is not caused by gross deficiencies in the antioxidant pathways tested here. The rcd3 mutant exhibits misregulated stomata. All mutants exhibited changes in stress hormones consistent with the known hormonal roles in defence and cell death regulation. One mutant, dubbed re-8, is an allele of the classic leaf development mutant reticulata and exhibits phenotypes dependent on light conditions. This study shows that O 3 sensitivity can be determined by deficiencies in multiple interacting plant systems and provides genetic evidence linking these systems. © 2008 The Authors.

Item Type: Article
Subjects: Q Science > QH Natural history > QH301 Biology
Divisions: Faculty of Science and Health > Biological Sciences, School of
Depositing User: Jim Jamieson
Date Deposited: 11 Oct 2011 10:54
Last Modified: 04 Feb 2019 17:15
URI: http://repository.essex.ac.uk/id/eprint/1072

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