Responses of isoprene emission and photochemical efficiency to severe drought combined with sustained hot weather in hybrid Populus.
Identifieur interne : 000146 ( Main/Exploration ); précédent : 000145; suivant : 000147Responses of isoprene emission and photochemical efficiency to severe drought combined with sustained hot weather in hybrid Populus.
Auteurs : Zhihong Sun [République populaire de Chine] ; Yan Shen [République populaire de Chine] ; Ülo Niinemets [République populaire de Chine, Estonie]Source :
- Journal of experimental botany [ 1460-2431 ] ; 2020.
Abstract
Isoprene emission has been considered to protect plants from heat stress, but there is limited information of how sustained heat spells which can be particularly severe under drought alters the plant capacity to produce isoprene. Under combined long-term stresses isoprene emission could contribute to maintenance of the precursor pool for rapid synthesis of essential isoprenoids to repair damaged component of leaf photosynthetic apparatus. We studied changes in foliage isoprene emission rate (I), foliage photosynthetic characteristics and antioxidant enzyme activities in two hybrid Populus clones, Nanlin 1388 (higher drought tolerance) and Nanlin 895 (higher thermotolerance), subject to a long-term (30 d) soil water stress (25% vs. 90% field capacity) combined with a natural heat spell (daytime temperature of 35-40 °C). Unexpectedly, isoprene emission of both clones performed similarly and the overall effects of drought on isoprene emission characteristics were initially minor, but the treatment effects and clonal differences increased in time. In particular, I only slightly increased in control plants of Nanlin 895 after 15 d of treatment, and it decreased more than 5-fold in all treatment and clone combinations after 30 d. The reduction in I was associated with decreased isoprene precursor dimethylallyl diphosphate pool size in all cases in 30 d after the start of treatment. Net assimilation rate, stomatal conductance, PSII center openness and effective quantum yield decreased, while non-photochemical quenching and catalase activity increased in both control and water-stressed plants. Contrary to expectations, the data collectively indicated that isoprene emission responded more sensitively to sustained stress than foliage photosynthetic characteristics. This primarily reflected the depletion of isoprene precursor pools under long-term severe stress.
DOI: 10.1093/jxb/eraa412
PubMed: 32901258
Affiliations:
Links toward previous steps (curation, corpus...)
Le document en format XML
<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">Responses of isoprene emission and photochemical efficiency to severe drought combined with sustained hot weather in hybrid Populus.</title><author><name sortKey="Sun, Zhihong" sort="Sun, Zhihong" uniqKey="Sun Z" first="Zhihong" last="Sun">Zhihong Sun</name><affiliation wicri:level="1"><nlm:affiliation>School of Forestry and Bio-Technology, Zhejiang Agriculture & Forestry University, Hangzhou, Zhejiang, China.</nlm:affiliation><country xml:lang="fr">République populaire de Chine</country><wicri:regionArea>School of Forestry and Bio-Technology, Zhejiang Agriculture & Forestry University, Hangzhou, Zhejiang</wicri:regionArea><wicri:noRegion>Zhejiang</wicri:noRegion></affiliation><affiliation wicri:level="1"><nlm:affiliation>Zhejiang A&F University State Key Laboratory of Subtropical Silviculture Hangzhou, Zhejiang, China.</nlm:affiliation><country xml:lang="fr">République populaire de Chine</country><wicri:regionArea>Zhejiang A&F University State Key Laboratory of Subtropical Silviculture Hangzhou, Zhejiang</wicri:regionArea><wicri:noRegion>Zhejiang</wicri:noRegion></affiliation></author><author><name sortKey="Shen, Yan" sort="Shen, Yan" uniqKey="Shen Y" first="Yan" last="Shen">Yan Shen</name><affiliation wicri:level="1"><nlm:affiliation>School of Forestry and Bio-Technology, Zhejiang Agriculture & Forestry University, Hangzhou, Zhejiang, China.</nlm:affiliation><country xml:lang="fr">République populaire de Chine</country><wicri:regionArea>School of Forestry and Bio-Technology, Zhejiang Agriculture & Forestry University, Hangzhou, Zhejiang</wicri:regionArea><wicri:noRegion>Zhejiang</wicri:noRegion></affiliation></author><author><name sortKey="Niinemets, Ulo" sort="Niinemets, Ulo" uniqKey="Niinemets U" first="Ülo" last="Niinemets">Ülo Niinemets</name><affiliation wicri:level="1"><nlm:affiliation>School of Forestry and Bio-Technology, Zhejiang Agriculture & Forestry University, Hangzhou, Zhejiang, China.</nlm:affiliation><country xml:lang="fr">République populaire de Chine</country><wicri:regionArea>School of Forestry and Bio-Technology, Zhejiang Agriculture & Forestry University, Hangzhou, Zhejiang</wicri:regionArea><wicri:noRegion>Zhejiang</wicri:noRegion></affiliation><affiliation wicri:level="1"><nlm:affiliation>Institute of Agricultural and Environmental Sciences, Estonian University of Life Sciences, Kreutzwaldi 1, Tartu, Estonia.</nlm:affiliation><country xml:lang="fr">Estonie</country><wicri:regionArea>Institute of Agricultural and Environmental Sciences, Estonian University of Life Sciences, Kreutzwaldi 1, Tartu</wicri:regionArea><wicri:noRegion>Tartu</wicri:noRegion></affiliation><affiliation wicri:level="1"><nlm:affiliation>Estonian Academy of Sciences, Kohtu 6, Tallinn, Estonia.</nlm:affiliation><country xml:lang="fr">Estonie</country><wicri:regionArea>Estonian Academy of Sciences, Kohtu 6, Tallinn</wicri:regionArea><wicri:noRegion>Tallinn</wicri:noRegion></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">PubMed</idno><date when="2020">2020</date><idno type="RBID">pubmed:32901258</idno><idno type="pmid">32901258</idno><idno type="doi">10.1093/jxb/eraa412</idno><idno type="wicri:Area/Main/Corpus">000114</idno><idno type="wicri:explorRef" wicri:stream="Main" wicri:step="Corpus" wicri:corpus="PubMed">000114</idno><idno type="wicri:Area/Main/Curation">000114</idno><idno type="wicri:explorRef" wicri:stream="Main" wicri:step="Curation">000114</idno><idno type="wicri:Area/Main/Exploration">000114</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en">Responses of isoprene emission and photochemical efficiency to severe drought combined with sustained hot weather in hybrid Populus.</title><author><name sortKey="Sun, Zhihong" sort="Sun, Zhihong" uniqKey="Sun Z" first="Zhihong" last="Sun">Zhihong Sun</name><affiliation wicri:level="1"><nlm:affiliation>School of Forestry and Bio-Technology, Zhejiang Agriculture & Forestry University, Hangzhou, Zhejiang, China.</nlm:affiliation><country xml:lang="fr">République populaire de Chine</country><wicri:regionArea>School of Forestry and Bio-Technology, Zhejiang Agriculture & Forestry University, Hangzhou, Zhejiang</wicri:regionArea><wicri:noRegion>Zhejiang</wicri:noRegion></affiliation><affiliation wicri:level="1"><nlm:affiliation>Zhejiang A&F University State Key Laboratory of Subtropical Silviculture Hangzhou, Zhejiang, China.</nlm:affiliation><country xml:lang="fr">République populaire de Chine</country><wicri:regionArea>Zhejiang A&F University State Key Laboratory of Subtropical Silviculture Hangzhou, Zhejiang</wicri:regionArea><wicri:noRegion>Zhejiang</wicri:noRegion></affiliation></author><author><name sortKey="Shen, Yan" sort="Shen, Yan" uniqKey="Shen Y" first="Yan" last="Shen">Yan Shen</name><affiliation wicri:level="1"><nlm:affiliation>School of Forestry and Bio-Technology, Zhejiang Agriculture & Forestry University, Hangzhou, Zhejiang, China.</nlm:affiliation><country xml:lang="fr">République populaire de Chine</country><wicri:regionArea>School of Forestry and Bio-Technology, Zhejiang Agriculture & Forestry University, Hangzhou, Zhejiang</wicri:regionArea><wicri:noRegion>Zhejiang</wicri:noRegion></affiliation></author><author><name sortKey="Niinemets, Ulo" sort="Niinemets, Ulo" uniqKey="Niinemets U" first="Ülo" last="Niinemets">Ülo Niinemets</name><affiliation wicri:level="1"><nlm:affiliation>School of Forestry and Bio-Technology, Zhejiang Agriculture & Forestry University, Hangzhou, Zhejiang, China.</nlm:affiliation><country xml:lang="fr">République populaire de Chine</country><wicri:regionArea>School of Forestry and Bio-Technology, Zhejiang Agriculture & Forestry University, Hangzhou, Zhejiang</wicri:regionArea><wicri:noRegion>Zhejiang</wicri:noRegion></affiliation><affiliation wicri:level="1"><nlm:affiliation>Institute of Agricultural and Environmental Sciences, Estonian University of Life Sciences, Kreutzwaldi 1, Tartu, Estonia.</nlm:affiliation><country xml:lang="fr">Estonie</country><wicri:regionArea>Institute of Agricultural and Environmental Sciences, Estonian University of Life Sciences, Kreutzwaldi 1, Tartu</wicri:regionArea><wicri:noRegion>Tartu</wicri:noRegion></affiliation><affiliation wicri:level="1"><nlm:affiliation>Estonian Academy of Sciences, Kohtu 6, Tallinn, Estonia.</nlm:affiliation><country xml:lang="fr">Estonie</country><wicri:regionArea>Estonian Academy of Sciences, Kohtu 6, Tallinn</wicri:regionArea><wicri:noRegion>Tallinn</wicri:noRegion></affiliation></author></analytic><series><title level="j">Journal of experimental botany</title><idno type="eISSN">1460-2431</idno><imprint><date when="2020" type="published">2020</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Isoprene emission has been considered to protect plants from heat stress, but there is limited information of how sustained heat spells which can be particularly severe under drought alters the plant capacity to produce isoprene. Under combined long-term stresses isoprene emission could contribute to maintenance of the precursor pool for rapid synthesis of essential isoprenoids to repair damaged component of leaf photosynthetic apparatus. We studied changes in foliage isoprene emission rate (I), foliage photosynthetic characteristics and antioxidant enzyme activities in two hybrid Populus clones, Nanlin 1388 (higher drought tolerance) and Nanlin 895 (higher thermotolerance), subject to a long-term (30 d) soil water stress (25% vs. 90% field capacity) combined with a natural heat spell (daytime temperature of 35-40 °C). Unexpectedly, isoprene emission of both clones performed similarly and the overall effects of drought on isoprene emission characteristics were initially minor, but the treatment effects and clonal differences increased in time. In particular, I only slightly increased in control plants of Nanlin 895 after 15 d of treatment, and it decreased more than 5-fold in all treatment and clone combinations after 30 d. The reduction in I was associated with decreased isoprene precursor dimethylallyl diphosphate pool size in all cases in 30 d after the start of treatment. Net assimilation rate, stomatal conductance, PSII center openness and effective quantum yield decreased, while non-photochemical quenching and catalase activity increased in both control and water-stressed plants. Contrary to expectations, the data collectively indicated that isoprene emission responded more sensitively to sustained stress than foliage photosynthetic characteristics. This primarily reflected the depletion of isoprene precursor pools under long-term severe stress.</div></front></TEI><pubmed><MedlineCitation Status="Publisher" Owner="NLM"><PMID Version="1">32901258</PMID><DateRevised><Year>2020</Year><Month>09</Month><Day>09</Day></DateRevised><Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Electronic">1460-2431</ISSN><JournalIssue CitedMedium="Internet"><PubDate><Year>2020</Year><Month>Sep</Month><Day>09</Day></PubDate></JournalIssue><Title>Journal of experimental botany</Title><ISOAbbreviation>J Exp Bot</ISOAbbreviation></Journal><ArticleTitle>Responses of isoprene emission and photochemical efficiency to severe drought combined with sustained hot weather in hybrid Populus.</ArticleTitle><ELocationID EIdType="pii" ValidYN="Y">eraa412</ELocationID><ELocationID EIdType="doi" ValidYN="Y">10.1093/jxb/eraa412</ELocationID><Abstract><AbstractText>Isoprene emission has been considered to protect plants from heat stress, but there is limited information of how sustained heat spells which can be particularly severe under drought alters the plant capacity to produce isoprene. Under combined long-term stresses isoprene emission could contribute to maintenance of the precursor pool for rapid synthesis of essential isoprenoids to repair damaged component of leaf photosynthetic apparatus. We studied changes in foliage isoprene emission rate (I), foliage photosynthetic characteristics and antioxidant enzyme activities in two hybrid Populus clones, Nanlin 1388 (higher drought tolerance) and Nanlin 895 (higher thermotolerance), subject to a long-term (30 d) soil water stress (25% vs. 90% field capacity) combined with a natural heat spell (daytime temperature of 35-40 °C). Unexpectedly, isoprene emission of both clones performed similarly and the overall effects of drought on isoprene emission characteristics were initially minor, but the treatment effects and clonal differences increased in time. In particular, I only slightly increased in control plants of Nanlin 895 after 15 d of treatment, and it decreased more than 5-fold in all treatment and clone combinations after 30 d. The reduction in I was associated with decreased isoprene precursor dimethylallyl diphosphate pool size in all cases in 30 d after the start of treatment. Net assimilation rate, stomatal conductance, PSII center openness and effective quantum yield decreased, while non-photochemical quenching and catalase activity increased in both control and water-stressed plants. Contrary to expectations, the data collectively indicated that isoprene emission responded more sensitively to sustained stress than foliage photosynthetic characteristics. This primarily reflected the depletion of isoprene precursor pools under long-term severe stress.</AbstractText><CopyrightInformation>© The Author(s) 2020. Published by Oxford University Press on behalf of the Society for Experimental Biology. All rights reserved. For permissions, please email: journals.permissions@oup.com.</CopyrightInformation></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Sun</LastName><ForeName>Zhihong</ForeName><Initials>Z</Initials><AffiliationInfo><Affiliation>School of Forestry and Bio-Technology, Zhejiang Agriculture & Forestry University, Hangzhou, Zhejiang, China.</Affiliation></AffiliationInfo><AffiliationInfo><Affiliation>Zhejiang A&F University State Key Laboratory of Subtropical Silviculture Hangzhou, Zhejiang, China.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Shen</LastName><ForeName>Yan</ForeName><Initials>Y</Initials><AffiliationInfo><Affiliation>School of Forestry and Bio-Technology, Zhejiang Agriculture & Forestry University, Hangzhou, Zhejiang, China.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Niinemets</LastName><ForeName>Ülo</ForeName><Initials>Ü</Initials><AffiliationInfo><Affiliation>School of Forestry and Bio-Technology, Zhejiang Agriculture & Forestry University, Hangzhou, Zhejiang, China.</Affiliation></AffiliationInfo><AffiliationInfo><Affiliation>Institute of Agricultural and Environmental Sciences, Estonian University of Life Sciences, Kreutzwaldi 1, Tartu, Estonia.</Affiliation></AffiliationInfo><AffiliationInfo><Affiliation>Estonian Academy of Sciences, Kohtu 6, Tallinn, Estonia.</Affiliation></AffiliationInfo></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType></PublicationTypeList><ArticleDate DateType="Electronic"><Year>2020</Year><Month>09</Month><Day>09</Day></ArticleDate></Article><MedlineJournalInfo><Country>England</Country><MedlineTA>J Exp Bot</MedlineTA><NlmUniqueID>9882906</NlmUniqueID><ISSNLinking>0022-0957</ISSNLinking></MedlineJournalInfo><CitationSubset>IM</CitationSubset><KeywordList Owner="NOTNLM"><Keyword MajorTopicYN="N">BVOC</Keyword><Keyword MajorTopicYN="N">DMADP pool size</Keyword><Keyword MajorTopicYN="N">MEP pathway</Keyword><Keyword MajorTopicYN="N">antioxidants</Keyword><Keyword MajorTopicYN="N">heat stress</Keyword><Keyword MajorTopicYN="N">photosynthesis</Keyword><Keyword MajorTopicYN="N">water stress</Keyword></KeywordList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="received"><Year>2020</Year><Month>05</Month><Day>04</Day></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2020</Year><Month>9</Month><Day>9</Day><Hour>5</Hour><Minute>30</Minute></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>2020</Year><Month>9</Month><Day>10</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2020</Year><Month>9</Month><Day>10</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>aheadofprint</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">32901258</ArticleId><ArticleId IdType="pii">5903072</ArticleId><ArticleId IdType="doi">10.1093/jxb/eraa412</ArticleId></ArticleIdList></PubmedData></pubmed><affiliations><list><country><li>Estonie</li><li>République populaire de Chine</li></country></list><tree><country name="République populaire de Chine"><noRegion><name sortKey="Sun, Zhihong" sort="Sun, Zhihong" uniqKey="Sun Z" first="Zhihong" last="Sun">Zhihong Sun</name></noRegion><name sortKey="Niinemets, Ulo" sort="Niinemets, Ulo" uniqKey="Niinemets U" first="Ülo" last="Niinemets">Ülo Niinemets</name><name sortKey="Shen, Yan" sort="Shen, Yan" uniqKey="Shen Y" first="Yan" last="Shen">Yan Shen</name><name sortKey="Sun, Zhihong" sort="Sun, Zhihong" uniqKey="Sun Z" first="Zhihong" last="Sun">Zhihong Sun</name></country><country name="Estonie"><noRegion><name sortKey="Niinemets, Ulo" sort="Niinemets, Ulo" uniqKey="Niinemets U" first="Ülo" last="Niinemets">Ülo Niinemets</name></noRegion><name sortKey="Niinemets, Ulo" sort="Niinemets, Ulo" uniqKey="Niinemets U" first="Ülo" last="Niinemets">Ülo Niinemets</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
EXPLOR_STEP=$WICRI_ROOT/Bois/explor/PoplarV1/Data/Main/Exploration
HfdSelect -h $EXPLOR_STEP/biblio.hfd -nk 000146 | SxmlIndent | more
Ou
HfdSelect -h $EXPLOR_AREA/Data/Main/Exploration/biblio.hfd -nk 000146 | SxmlIndent | more
Pour mettre un lien sur cette page dans le réseau Wicri
{{Explor lien
|wiki= Bois
|area= PoplarV1
|flux= Main
|étape= Exploration
|type= RBID
|clé= pubmed:32901258
|texte= Responses of isoprene emission and photochemical efficiency to severe drought combined with sustained hot weather in hybrid Populus.
}}
Pour générer des pages wiki
HfdIndexSelect -h $EXPLOR_AREA/Data/Main/Exploration/RBID.i -Sk "pubmed:32901258" \
| HfdSelect -Kh $EXPLOR_AREA/Data/Main/Exploration/biblio.hfd \
| NlmPubMed2Wicri -a PoplarV1
| This area was generated with Dilib version V0.6.37. |  |