Less photoprotection can be good in some genetic and environmental contexts.
Identifieur interne : 000164 ( Main/Exploration ); précédent : 000163; suivant : 000165Less photoprotection can be good in some genetic and environmental contexts.
Auteurs : Barbara Demmig-Adams [États-Unis] ; Jared J. Stewart [États-Unis] ; William W. Adams [États-Unis]Source :
- The Biochemical journal [ 1470-8728 ] ; 2019.
Descripteurs français
- KwdFr :
- MESH :
- génétique : Chloroplastes, Plantes.
- métabolisme : Antioxydants, Chloroplastes, Plantes.
- physiologie : Photosynthèse.
- Interaction entre gènes et environnement, Oxydoréduction.
English descriptors
- KwdEn :
- MESH :
- chemical , metabolism : Antioxidants.
- genetics : Chloroplasts, Plants.
- metabolism : Chloroplasts, Plants.
- physiology : Photosynthesis.
- Gene-Environment Interaction, Oxidation-Reduction.
Abstract
Antioxidant systems modulate oxidant-based signaling networks and excessive removal of oxidants can prevent beneficial acclimation responses. Evidence from mutant, transgenic, and locally adapted natural plant systems is used to interpret differences in the capacity for antioxidation and formulate hypotheses for future inquiry. We focus on the first line of chloroplast antioxidant defense, pre-emptive thermal dissipation of excess absorbed light (monitored as nonphotochemical fluorescence quenching, NPQ) as well as on tocopherol-based antioxidation. Findings from NPQ-deficient and tocopherol-deficient mutants that exhibited enhanced biomass production and/or enhanced foliar water-transport capacity are reviewed and discussed in the context of the impact of lower levels of antioxidation on plant performance in hot/dry conditions, under cool temperature, and in the presence of biotic stress. The complexity of cellular redox-signaling networks is related to the complexity of environmental and endogenous inputs as well as to the need for intensified training and collaboration in the study of plant-environment interactions across biological sub-disciplines.
DOI: 10.1042/BCJ20190328
PubMed: 31320389
Affiliations:
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Evidence from mutant, transgenic, and locally adapted natural plant systems is used to interpret differences in the capacity for antioxidation and formulate hypotheses for future inquiry. We focus on the first line of chloroplast antioxidant defense, pre-emptive thermal dissipation of excess absorbed light (monitored as nonphotochemical fluorescence quenching, NPQ) as well as on tocopherol-based antioxidation. Findings from NPQ-deficient and tocopherol-deficient mutants that exhibited enhanced biomass production and/or enhanced foliar water-transport capacity are reviewed and discussed in the context of the impact of lower levels of antioxidation on plant performance in hot/dry conditions, under cool temperature, and in the presence of biotic stress. The complexity of cellular redox-signaling networks is related to the complexity of environmental and endogenous inputs as well as to the need for intensified training and collaboration in the study of plant-environment interactions across biological sub-disciplines.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">31320389</PMID><DateCompleted><Year>2020</Year><Month>03</Month><Day>18</Day></DateCompleted><DateRevised><Year>2020</Year><Month>03</Month><Day>18</Day></DateRevised><Article PubModel="Electronic"><Journal><ISSN IssnType="Electronic">1470-8728</ISSN><JournalIssue CitedMedium="Internet"><Volume>476</Volume><Issue>14</Issue><PubDate><Year>2019</Year><Month>07</Month><Day>18</Day></PubDate></JournalIssue><Title>The Biochemical journal</Title><ISOAbbreviation>Biochem J</ISOAbbreviation></Journal><ArticleTitle>Less photoprotection can be good in some genetic and environmental contexts.</ArticleTitle><Pagination><MedlinePgn>2017-2029</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1042/BCJ20190328</ELocationID><Abstract><AbstractText>Antioxidant systems modulate oxidant-based signaling networks and excessive removal of oxidants can prevent beneficial acclimation responses. Evidence from mutant, transgenic, and locally adapted natural plant systems is used to interpret differences in the capacity for antioxidation and formulate hypotheses for future inquiry. We focus on the first line of chloroplast antioxidant defense, pre-emptive thermal dissipation of excess absorbed light (monitored as nonphotochemical fluorescence quenching, NPQ) as well as on tocopherol-based antioxidation. Findings from NPQ-deficient and tocopherol-deficient mutants that exhibited enhanced biomass production and/or enhanced foliar water-transport capacity are reviewed and discussed in the context of the impact of lower levels of antioxidation on plant performance in hot/dry conditions, under cool temperature, and in the presence of biotic stress. The complexity of cellular redox-signaling networks is related to the complexity of environmental and endogenous inputs as well as to the need for intensified training and collaboration in the study of plant-environment interactions across biological sub-disciplines.</AbstractText><CopyrightInformation>© 2019 The Author(s). Published by Portland Press Limited on behalf of the Biochemical Society.</CopyrightInformation></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Demmig-Adams</LastName><ForeName>Barbara</ForeName><Initials>B</Initials><AffiliationInfo><Affiliation>Department of Ecology & Evolutionary Biology, University of Colorado, Boulder, CO 80309-0334, U.S.A. barbara.demmig-adams@colorado.edu.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Stewart</LastName><ForeName>Jared J</ForeName><Initials>JJ</Initials><Identifier Source="ORCID">0000-0002-0226-534X</Identifier><AffiliationInfo><Affiliation>Department of Ecology & Evolutionary Biology, University of Colorado, Boulder, CO 80309-0334, U.S.A.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Adams</LastName><ForeName>William W</ForeName><Initials>WW</Initials><Suffix>3rd</Suffix><AffiliationInfo><Affiliation>Department of Ecology & Evolutionary Biology, University of Colorado, Boulder, CO 80309-0334, U.S.A.</Affiliation></AffiliationInfo></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType><PublicationType UI="D013485">Research Support, Non-U.S. Gov't</PublicationType><PublicationType UI="D013486">Research Support, U.S. Gov't, Non-P.H.S.</PublicationType><PublicationType UI="D016454">Review</PublicationType></PublicationTypeList><ArticleDate DateType="Electronic"><Year>2019</Year><Month>07</Month><Day>18</Day></ArticleDate></Article><MedlineJournalInfo><Country>England</Country><MedlineTA>Biochem J</MedlineTA><NlmUniqueID>2984726R</NlmUniqueID><ISSNLinking>0264-6021</ISSNLinking></MedlineJournalInfo><ChemicalList><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance UI="D000975">Antioxidants</NameOfSubstance></Chemical></ChemicalList><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName UI="D000975" MajorTopicYN="N">Antioxidants</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="Y">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D002736" MajorTopicYN="Y">Chloroplasts</DescriptorName><QualifierName UI="Q000235" MajorTopicYN="N">genetics</QualifierName><QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D059647" MajorTopicYN="Y">Gene-Environment Interaction</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D010084" MajorTopicYN="N">Oxidation-Reduction</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D010788" MajorTopicYN="N">Photosynthesis</DescriptorName><QualifierName UI="Q000502" MajorTopicYN="Y">physiology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D010944" MajorTopicYN="Y">Plants</DescriptorName><QualifierName UI="Q000235" MajorTopicYN="N">genetics</QualifierName><QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName></MeshHeading></MeshHeadingList><KeywordList Owner="NOTNLM"><Keyword MajorTopicYN="Y">drought</Keyword><Keyword MajorTopicYN="Y">tocopherol</Keyword><Keyword MajorTopicYN="Y">vasculature</Keyword><Keyword MajorTopicYN="Y">zeaxanthin</Keyword></KeywordList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="received"><Year>2019</Year><Month>05</Month><Day>04</Day></PubMedPubDate><PubMedPubDate PubStatus="revised"><Year>2019</Year><Month>06</Month><Day>26</Day></PubMedPubDate><PubMedPubDate PubStatus="accepted"><Year>2019</Year><Month>07</Month><Day>01</Day></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2019</Year><Month>7</Month><Day>20</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>2019</Year><Month>7</Month><Day>20</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2020</Year><Month>3</Month><Day>19</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>epublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">31320389</ArticleId><ArticleId IdType="pii">BCJ20190328</ArticleId><ArticleId IdType="doi">10.1042/BCJ20190328</ArticleId></ArticleIdList></PubmedData></pubmed><affiliations><list><country><li>États-Unis</li></country><region><li>Colorado</li></region></list><tree><country name="États-Unis"><region name="Colorado"><name sortKey="Demmig Adams, Barbara" sort="Demmig Adams, Barbara" uniqKey="Demmig Adams B" first="Barbara" last="Demmig-Adams">Barbara Demmig-Adams</name></region><name sortKey="Adams, William W" sort="Adams, William W" uniqKey="Adams W" first="William W" last="Adams">William W. 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