[Effects of drought stress on photosynthesis physiology of Populus pseudo-simonii].
Identifieur interne : 003C82 ( Main/Exploration ); précédent : 003C81; suivant : 003C83[Effects of drought stress on photosynthesis physiology of Populus pseudo-simonii].
Auteurs : Shilei Fu [République populaire de Chine] ; Yong-Bin Zhou ; Xingyuan He ; Wei ChenSource :
- Ying yong sheng tai xue bao = The journal of applied ecology [ 1001-9332 ] ; 2006.
Descripteurs français
- KwdFr :
- MESH :
- métabolisme : Chlorophylle, Complexe protéique du photosystème II.
- physiologie : Photosynthèse, Populus, Transpiration des plantes.
- Catastrophes.
English descriptors
- KwdEn :
- MESH :
- chemical , metabolism : Chlorophyll, Photosystem II Protein Complex.
- physiology : Photosynthesis, Plant Transpiration, Populus.
- Disasters.
Abstract
In this paper, the effects of drought stress simulated by PEG on the photosynthesis of Populus pseudo-simonii were monitored by gas exchange and chlorophyll fluorescence techniques. The results showed that in the early phase of drought stress, net photosynthetic rate (P(n)), transpiration rate (T(r)), stomata conductance (g(s)) , and intercellular CO2 concentration (C(i)) decreased with increasing stress, and the decrease of P(n) was mainly related to the decreased g(s). In the late phase, C(i) increased gradually, while F(v)/F(m) and F(v)/F(o) decreased significantly. POD activity increased in the early phase, but decreased in the late phase. All of these indicated that in the early phase of drought stress, stomata closure was the main factor limiting P. pseudo-simonii photosynthesis, while in the late phase, the main limiting factor was non-stomatal. A short period of drought stress induced the increase of protective enzyme activity, but a longer exposure to the stress resulted in the decrease of PS II efficiency and POD activity.
PubMed: 17269318
Affiliations:
Links toward previous steps (curation, corpus...)
Le document en format XML
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The results showed that in the early phase of drought stress, net photosynthetic rate (P(n)), transpiration rate (T(r)), stomata conductance (g(s)) , and intercellular CO2 concentration (C(i)) decreased with increasing stress, and the decrease of P(n) was mainly related to the decreased g(s). In the late phase, C(i) increased gradually, while F(v)/F(m) and F(v)/F(o) decreased significantly. POD activity increased in the early phase, but decreased in the late phase. All of these indicated that in the early phase of drought stress, stomata closure was the main factor limiting P. pseudo-simonii photosynthesis, while in the late phase, the main limiting factor was non-stomatal. A short period of drought stress induced the increase of protective enzyme activity, but a longer exposure to the stress resulted in the decrease of PS II efficiency and POD activity.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">17269318</PMID><DateCompleted><Year>2007</Year><Month>12</Month><Day>14</Day></DateCompleted><DateRevised><Year>2016</Year><Month>10</Month><Day>18</Day></DateRevised><Article PubModel="Print"><Journal><ISSN IssnType="Print">1001-9332</ISSN><JournalIssue CitedMedium="Print"><Volume>17</Volume><Issue>11</Issue><PubDate><Year>2006</Year><Month>Nov</Month></PubDate></JournalIssue><Title>Ying yong sheng tai xue bao = The journal of applied ecology</Title><ISOAbbreviation>Ying Yong Sheng Tai Xue Bao</ISOAbbreviation></Journal><ArticleTitle>[Effects of drought stress on photosynthesis physiology of Populus pseudo-simonii].</ArticleTitle><Pagination><MedlinePgn>2016-9</MedlinePgn></Pagination><Abstract><AbstractText>In this paper, the effects of drought stress simulated by PEG on the photosynthesis of Populus pseudo-simonii were monitored by gas exchange and chlorophyll fluorescence techniques. The results showed that in the early phase of drought stress, net photosynthetic rate (P(n)), transpiration rate (T(r)), stomata conductance (g(s)) , and intercellular CO2 concentration (C(i)) decreased with increasing stress, and the decrease of P(n) was mainly related to the decreased g(s). In the late phase, C(i) increased gradually, while F(v)/F(m) and F(v)/F(o) decreased significantly. POD activity increased in the early phase, but decreased in the late phase. All of these indicated that in the early phase of drought stress, stomata closure was the main factor limiting P. pseudo-simonii photosynthesis, while in the late phase, the main limiting factor was non-stomatal. A short period of drought stress induced the increase of protective enzyme activity, but a longer exposure to the stress resulted in the decrease of PS II efficiency and POD activity.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Fu</LastName><ForeName>Shilei</ForeName><Initials>S</Initials><AffiliationInfo><Affiliation>Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China. fsl116@126.com</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Zhou</LastName><ForeName>Yong-Bin</ForeName><Initials>YB</Initials></Author><Author ValidYN="Y"><LastName>He</LastName><ForeName>Xingyuan</ForeName><Initials>X</Initials></Author><Author ValidYN="Y"><LastName>Chen</LastName><ForeName>Wei</ForeName><Initials>W</Initials></Author></AuthorList><Language>chi</Language><PublicationTypeList><PublicationType UI="D004740">English Abstract</PublicationType><PublicationType UI="D016428">Journal Article</PublicationType><PublicationType UI="D013485">Research Support, Non-U.S. Gov't</PublicationType></PublicationTypeList></Article><MedlineJournalInfo><Country>China</Country><MedlineTA>Ying Yong Sheng Tai Xue Bao</MedlineTA><NlmUniqueID>9425159</NlmUniqueID><ISSNLinking>1001-9332</ISSNLinking></MedlineJournalInfo><ChemicalList><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance UI="D045332">Photosystem II Protein Complex</NameOfSubstance></Chemical><Chemical><RegistryNumber>1406-65-1</RegistryNumber><NameOfSubstance UI="D002734">Chlorophyll</NameOfSubstance></Chemical></ChemicalList><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName UI="D002734" MajorTopicYN="N">Chlorophyll</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D004190" MajorTopicYN="Y">Disasters</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D010788" MajorTopicYN="N">Photosynthesis</DescriptorName><QualifierName UI="Q000502" MajorTopicYN="Y">physiology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D045332" MajorTopicYN="N">Photosystem II Protein Complex</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D018526" MajorTopicYN="N">Plant Transpiration</DescriptorName><QualifierName UI="Q000502" MajorTopicYN="Y">physiology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D032107" MajorTopicYN="N">Populus</DescriptorName><QualifierName UI="Q000502" MajorTopicYN="Y">physiology</QualifierName></MeshHeading></MeshHeadingList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="pubmed"><Year>2007</Year><Month>2</Month><Day>3</Day><Hour>9</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2007</Year><Month>12</Month><Day>15</Day><Hour>9</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2007</Year><Month>2</Month><Day>3</Day><Hour>9</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">17269318</ArticleId></ArticleIdList></PubmedData></pubmed><affiliations><list><country><li>République populaire de Chine</li></country></list><tree><noCountry><name sortKey="Chen, Wei" sort="Chen, Wei" uniqKey="Chen W" first="Wei" last="Chen">Wei Chen</name><name sortKey="He, Xingyuan" sort="He, Xingyuan" uniqKey="He X" first="Xingyuan" last="He">Xingyuan He</name><name sortKey="Zhou, Yong Bin" sort="Zhou, Yong Bin" uniqKey="Zhou Y" first="Yong-Bin" last="Zhou">Yong-Bin Zhou</name></noCountry><country name="République populaire de Chine"><noRegion><name sortKey="Fu, Shilei" sort="Fu, Shilei" uniqKey="Fu S" first="Shilei" last="Fu">Shilei Fu</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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