Ozone responses in Arabidopsis : beyond stomatal conductance

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dc.contributor.author Morales, Luis O.
dc.contributor.author Shapiguzov, Alexey
dc.contributor.author Safronov, Omid
dc.contributor.author Leppälä, Johanna
dc.contributor.author Vaahtera, Lauri
dc.contributor.author Yarmolinsky, Dmitry
dc.contributor.author Kollist, Hannes
dc.contributor.author Brosche, Mikael
dc.date.accessioned 2021-10-05T08:54:01Z
dc.date.available 2021-10-05T08:54:01Z
dc.date.issued 2021-05
dc.identifier.citation Morales , L O , Shapiguzov , A , Safronov , O , Leppälä , J , Vaahtera , L , Yarmolinsky , D , Kollist , H & Brosche , M 2021 , ' Ozone responses in Arabidopsis : beyond stomatal conductance ' , Plant Physiology , vol. 186 , no. 1 , pp. 180-192 . https://doi.org/10.1093/plphys/kiab097
dc.identifier.other PURE: 169013043
dc.identifier.other PURE UUID: 367a9a58-d81d-43d4-a115-50bfc478b6a4
dc.identifier.other WOS: 000696366700014
dc.identifier.other ORCID: /0000-0002-9233-7254/work/101029645
dc.identifier.other ORCID: /0000-0002-1135-2496/work/101029889
dc.identifier.other ORCID: /0000-0001-7199-1882/work/101030989
dc.identifier.other ORCID: /0000-0003-2044-3258/work/101031328
dc.identifier.uri http://hdl.handle.net/10138/334916
dc.description.abstract Tropospheric ozone (O-3) is a major air pollutant that decreases yield of important crops worldwide. Despite long-lasting research of its negative effects on plants, there are many gaps in our knowledge on how plants respond to O-3. In this study, we used natural variation in the model plant Arabidopsis (Arabidopsis thaliana) to characterize molecular and physiological mechanisms underlying O-3 sensitivity. A key parameter in models for O-3 damage is stomatal uptake. Here we show that the extent of O-3 damage in the sensitive Arabidopsis accession Shahdara (Sha) does not correspond with O-3 uptake, pointing toward stomata-independent mechanisms for the development of O-3 damage. We compared tolerant (Col-0) versus sensitive accessions (Sha, Cvi-0) in assays related to photosynthesis, cell death, antioxidants, and transcriptional regulation. Acute O-3 exposure increased cell death, development of lesions in the leaves, and decreased photosynthesis in sensitive accessions. In both Sha and Cvi-0, O-3-induced lesions were associated with decreased maximal chlorophyll fluorescence and low quantum yield of electron transfer from Photosystem II to plastoquinone. However, O-3-induced repression of photosynthesis in these two O-3-sensitive accessions developed in different ways. We demonstrate that O-3 sensitivity in Arabidopsis is influenced by genetic diversity given that Sha and Cvi-0 developed accession-specific transcriptional responses to O-3. Our findings advance the understanding of plant responses to O-3 and set a framework for future studies to characterize molecular and physiological mechanisms allowing plants to respond to high O-3 levels in the atmosphere as a result of high air pollution and climate change. en
dc.format.extent 13
dc.language.iso eng
dc.relation.ispartof Plant Physiology
dc.rights cc_by
dc.rights.uri info:eu-repo/semantics/openAccess
dc.subject CELL-DEATH
dc.subject ROLES
dc.subject SENSITIVITY
dc.subject 11831 Plant biology
dc.title Ozone responses in Arabidopsis : beyond stomatal conductance en
dc.type Article
dc.contributor.organization Organismal and Evolutionary Biology Research Programme
dc.contributor.organization Viikki Plant Science Centre (ViPS)
dc.contributor.organization Plant ROS-Signalling
dc.contributor.organization Plant Biology
dc.contributor.organization Molecular and Integrative Biosciences Research Programme
dc.contributor.organization Plant-Fungal Interactions Group
dc.contributor.organization Bioinformatics for Molecular Biology and Genomics (BMBG)
dc.contributor.organization Plant stress and natural variation
dc.description.reviewstatus Peer reviewed
dc.relation.doi https://doi.org/10.1093/plphys/kiab097
dc.relation.issn 0032-0889
dc.rights.accesslevel openAccess
dc.type.version publishedVersion

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