Diurnal and Seasonal Patterns of Photosynthesis and Respiration by Stems of Populus tremuloides Michx.
Identifieur interne : 004E85 ( Main/Exploration ); précédent : 004E84; suivant : 004E86Diurnal and Seasonal Patterns of Photosynthesis and Respiration by Stems of Populus tremuloides Michx.
Auteurs : K C Foote [États-Unis] ; M. SchaedleSource :
- Plant physiology [ 0032-0889 ] ; 1976.
Abstract
The photosynthetic and respiratory rates of 5- to 7-year-old aspen stems (Populus tremuloides Michx.) were monitored in the field for 1 year to determine the seasonal patterns. The stem was not capable of net photosynthesis, but the respiratory CO(2) loss from the stem was reduced by 0 to 100% depending on the time of year and the level of illumination as a result of bark photosynthesis. The monthly dark respiratory rate ranged from 0.24 mg CO(2)/dm(2). hr in January to a maximum 7.4 mg CO(2)/dm(2). hr in June. Individual measurements ranged from 0.02 mg CO(2)/dm(2). hr in February to 12.3 mg CO(2)/dm(2). hr in June. Gross photosynthesis followed a pattern similar to the dark respiratory rate. The mean monthly rate was highest in June (1.65 mg CO(2)/dm(2). hr) and lowest in December (0.02 mg CO(2)/dm(2). hr). Individual measurements ranged from 0.0 mg CO(2)/dm(2). hr in winter to 5.5 mg CO(2)/dm(2). hr in July.Winter studies showed that stem respiration continued down to -11 C, the coldest temperature during this study. Upon warning to -3 C, the dark respiratory rate showed a sudden sharp increase (7- to 12-fold) which required many hours to return to normal levels. No measurable photosynthesis occurred below -3 C. Between -3 and 0 C, the maximal photosynthetic rate was reduced to less than 50% of the respiratory rate, but increased to 89% between 5 to 10 C.On a yearly basis, bark photosynthesis in P. tremuloides reduced the stem respiratory CO(2) loss by 28.7% on a daytime basis and an estimated 16 to 18% on a 24-hour basis.
DOI: 10.1104/pp.58.5.651
PubMed: 16659737
PubMed Central: PMC542276
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Schaedle</name></author></titleStmt><publicationStmt><idno type="wicri:source">PubMed</idno><date when="1976">1976</date><idno type="RBID">pubmed:16659737</idno><idno type="pmid">16659737</idno><idno type="pmc">PMC542276</idno><idno type="doi">10.1104/pp.58.5.651</idno><idno type="wicri:Area/Main/Corpus">004E75</idno><idno type="wicri:explorRef" wicri:stream="Main" wicri:step="Corpus" wicri:corpus="PubMed">004E75</idno><idno type="wicri:Area/Main/Curation">004E75</idno><idno type="wicri:explorRef" wicri:stream="Main" wicri:step="Curation">004E75</idno><idno type="wicri:Area/Main/Exploration">004E75</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en">Diurnal and Seasonal Patterns of Photosynthesis and Respiration by Stems of Populus tremuloides Michx.</title><author><name sortKey="Foote, K C" sort="Foote, K C" uniqKey="Foote K" first="K C" last="Foote">K C Foote</name><affiliation wicri:level="2"><nlm:affiliation>Department of Botany and Forest Pathology, State University of New York, College of Environmental Science and Forestry, Syracuse, New York 13210.</nlm:affiliation><country xml:lang="fr">États-Unis</country><placeName><region type="state">État de New York</region></placeName><wicri:cityArea>Department of Botany and Forest Pathology, State University of New York, College of Environmental Science and Forestry, Syracuse</wicri:cityArea></affiliation></author><author><name sortKey="Schaedle, M" sort="Schaedle, M" uniqKey="Schaedle M" first="M" last="Schaedle">M. Schaedle</name></author></analytic><series><title level="j">Plant physiology</title><idno type="ISSN">0032-0889</idno><imprint><date when="1976" type="published">1976</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The photosynthetic and respiratory rates of 5- to 7-year-old aspen stems (Populus tremuloides Michx.) were monitored in the field for 1 year to determine the seasonal patterns. The stem was not capable of net photosynthesis, but the respiratory CO(2) loss from the stem was reduced by 0 to 100% depending on the time of year and the level of illumination as a result of bark photosynthesis. The monthly dark respiratory rate ranged from 0.24 mg CO(2)/dm(2). hr in January to a maximum 7.4 mg CO(2)/dm(2). hr in June. Individual measurements ranged from 0.02 mg CO(2)/dm(2). hr in February to 12.3 mg CO(2)/dm(2). hr in June. Gross photosynthesis followed a pattern similar to the dark respiratory rate. The mean monthly rate was highest in June (1.65 mg CO(2)/dm(2). hr) and lowest in December (0.02 mg CO(2)/dm(2). hr). Individual measurements ranged from 0.0 mg CO(2)/dm(2). hr in winter to 5.5 mg CO(2)/dm(2). hr in July.Winter studies showed that stem respiration continued down to -11 C, the coldest temperature during this study. Upon warning to -3 C, the dark respiratory rate showed a sudden sharp increase (7- to 12-fold) which required many hours to return to normal levels. No measurable photosynthesis occurred below -3 C. Between -3 and 0 C, the maximal photosynthetic rate was reduced to less than 50% of the respiratory rate, but increased to 89% between 5 to 10 C.On a yearly basis, bark photosynthesis in P. tremuloides reduced the stem respiratory CO(2) loss by 28.7% on a daytime basis and an estimated 16 to 18% on a 24-hour basis.</div></front></TEI><pubmed><MedlineCitation Status="PubMed-not-MEDLINE" Owner="NLM"><PMID Version="1">16659737</PMID><DateCompleted><Year>2010</Year><Month>06</Month><Day>29</Day></DateCompleted><DateRevised><Year>2019</Year><Month>05</Month><Day>14</Day></DateRevised><Article PubModel="Print"><Journal><ISSN IssnType="Print">0032-0889</ISSN><JournalIssue CitedMedium="Print"><Volume>58</Volume><Issue>5</Issue><PubDate><Year>1976</Year><Month>Nov</Month></PubDate></JournalIssue><Title>Plant physiology</Title><ISOAbbreviation>Plant Physiol</ISOAbbreviation></Journal><ArticleTitle>Diurnal and Seasonal Patterns of Photosynthesis and Respiration by Stems of Populus tremuloides Michx.</ArticleTitle><Pagination><MedlinePgn>651-5</MedlinePgn></Pagination><Abstract><AbstractText>The photosynthetic and respiratory rates of 5- to 7-year-old aspen stems (Populus tremuloides Michx.) were monitored in the field for 1 year to determine the seasonal patterns. The stem was not capable of net photosynthesis, but the respiratory CO(2) loss from the stem was reduced by 0 to 100% depending on the time of year and the level of illumination as a result of bark photosynthesis. The monthly dark respiratory rate ranged from 0.24 mg CO(2)/dm(2). hr in January to a maximum 7.4 mg CO(2)/dm(2). hr in June. Individual measurements ranged from 0.02 mg CO(2)/dm(2). hr in February to 12.3 mg CO(2)/dm(2). hr in June. Gross photosynthesis followed a pattern similar to the dark respiratory rate. The mean monthly rate was highest in June (1.65 mg CO(2)/dm(2). hr) and lowest in December (0.02 mg CO(2)/dm(2). hr). Individual measurements ranged from 0.0 mg CO(2)/dm(2). hr in winter to 5.5 mg CO(2)/dm(2). hr in July.Winter studies showed that stem respiration continued down to -11 C, the coldest temperature during this study. Upon warning to -3 C, the dark respiratory rate showed a sudden sharp increase (7- to 12-fold) which required many hours to return to normal levels. No measurable photosynthesis occurred below -3 C. Between -3 and 0 C, the maximal photosynthetic rate was reduced to less than 50% of the respiratory rate, but increased to 89% between 5 to 10 C.On a yearly basis, bark photosynthesis in P. tremuloides reduced the stem respiratory CO(2) loss by 28.7% on a daytime basis and an estimated 16 to 18% on a 24-hour basis.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Foote</LastName><ForeName>K C</ForeName><Initials>KC</Initials><AffiliationInfo><Affiliation>Department of Botany and Forest Pathology, State University of New York, College of Environmental Science and Forestry, Syracuse, New York 13210.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Schaedle</LastName><ForeName>M</ForeName><Initials>M</Initials></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType></PublicationTypeList></Article><MedlineJournalInfo><Country>United States</Country><MedlineTA>Plant Physiol</MedlineTA><NlmUniqueID>0401224</NlmUniqueID><ISSNLinking>0032-0889</ISSNLinking></MedlineJournalInfo></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="pubmed"><Year>1976</Year><Month>11</Month><Day>1</Day><Hour>0</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>1976</Year><Month>11</Month><Day>1</Day><Hour>0</Hour><Minute>1</Minute></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>1976</Year><Month>11</Month><Day>1</Day><Hour>0</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">16659737</ArticleId><ArticleId IdType="pmc">PMC542276</ArticleId><ArticleId IdType="doi">10.1104/pp.58.5.651</ArticleId></ArticleIdList><ReferenceList><Reference><Citation>Plant Physiol. 1930 Oct;5(4):509-34</Citation><ArticleIdList><ArticleId IdType="pubmed">16652678</ArticleId></ArticleIdList></Reference><Reference><Citation>Plant Physiol. 1976 Jul;58(1):91-4</Citation><ArticleIdList><ArticleId IdType="pubmed">16659628</ArticleId></ArticleIdList></Reference><Reference><Citation>Plant Physiol. 1973 Feb;51(2):245-9</Citation><ArticleIdList><ArticleId IdType="pubmed">16658309</ArticleId></ArticleIdList></Reference><Reference><Citation>Plant Physiol. 1943 Apr;18(2):252-60</Citation><ArticleIdList><ArticleId IdType="pubmed">16653843</ArticleId></ArticleIdList></Reference></ReferenceList></PubmedData></pubmed><affiliations><list><country><li>États-Unis</li></country><region><li>État de New York</li></region></list><tree><noCountry><name sortKey="Schaedle, M" sort="Schaedle, M" uniqKey="Schaedle M" first="M" last="Schaedle">M. Schaedle</name></noCountry><country name="États-Unis"><region name="État de New York"><name sortKey="Foote, K C" sort="Foote, K C" uniqKey="Foote K" first="K C" last="Foote">K C Foote</name></region></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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