Adjustments in epidermal UV-transmittance of leaves in sun-shade transitions.
Identifieur interne : 002808 ( Main/Exploration ); précédent : 002807; suivant : 002809Adjustments in epidermal UV-transmittance of leaves in sun-shade transitions.
Auteurs : Paul W. Barnes [États-Unis] ; Anna R. Kersting ; Stephan D. Flint ; Wolfram Beyschlag ; Ronald J. RyelSource :
- Physiologia plantarum [ 1399-3054 ] ; 2013.
Descripteurs français
- KwdFr :
- Chlorophylle (composition chimique), Chlorophylle (métabolisme), Feuilles de plante (effets des radiations), Feuilles de plante (physiologie), Fluorescence (MeSH), Lumière du soleil (MeSH), Populus (effets des radiations), Populus (physiologie), Rayons ultraviolets (MeSH), Relation dose-effet des rayonnements (MeSH), Vicia faba (effets des radiations), Vicia faba (physiologie), Écosystème (MeSH), Épiderme végétal (effets des radiations), Épiderme végétal (physiologie).
- MESH :
- composition chimique : Chlorophylle.
- effets des radiations : Feuilles de plante, Populus, Vicia faba, Épiderme végétal.
- métabolisme : Chlorophylle.
- physiologie : Feuilles de plante, Populus, Vicia faba, Épiderme végétal.
- Fluorescence, Lumière du soleil, Rayons ultraviolets, Relation dose-effet des rayonnements, Écosystème.
English descriptors
- KwdEn :
- Chlorophyll (chemistry), Chlorophyll (metabolism), Dose-Response Relationship, Radiation (MeSH), Ecosystem (MeSH), Fluorescence (MeSH), Plant Epidermis (physiology), Plant Epidermis (radiation effects), Plant Leaves (physiology), Plant Leaves (radiation effects), Populus (physiology), Populus (radiation effects), Sunlight (MeSH), Ultraviolet Rays (MeSH), Vicia faba (physiology), Vicia faba (radiation effects).
- MESH :
- chemical , chemistry : Chlorophyll.
- chemical , metabolism : Chlorophyll.
- physiology : Plant Epidermis, Plant Leaves, Populus, Vicia faba.
- radiation effects : Plant Epidermis, Plant Leaves, Populus, Vicia faba.
- Dose-Response Relationship, Radiation, Ecosystem, Fluorescence, Sunlight, Ultraviolet Rays.
Abstract
Epidermal UV transmittance (TUV ) and UV-absorbing compounds were measured in sun and shade leaves of Populus tremuloides and Vicia faba exposed to contrasting light environments under field conditions to evaluate UV acclimation potentials and regulatory roles of photosynthetically active radiation (PAR) and UV in UV-shielding. Within a natural canopy of P. tremuloides, TUV ranged from 4 to 98% and showed a strong nonlinear relationship with mid-day horizontal fluxes of PAR [photon flux density (PFD) = 6-1830 µmol m⁻² s⁻¹]; similar patterns were found for V. faba leaves that developed under a comparable PFD range. A series of field transfer experiments using neutral-density shade cloth and UV blocking/transmitting films indicated that PAR influenced TUV during leaf development to a greater degree than UV, and shade leaves of both species increased their UV-shielding when exposed to full sun; however, this required the presence of UV, with both UV-A and UV-B required for full acclimation. TUV of sun leaves of both species was largely unresponsive to shade either with or without UV. In most, but not all cases, changes in TUV were associated with alterations in the concentration of whole-leaf UV-absorbing compounds. These results suggest that, (1) moderate-to-high levels of PAR alone during leaf development can induce substantial UV-protection in field-grown plants, (2) mature shade leaves have the potential to adjust their UV-shielding which may reduce the detrimental effects of UV that could occur following sudden exposures to high light and (3) under field conditions, PAR and UV play different roles in regulating UV-shielding during and after leaf development.
DOI: 10.1111/ppl.12025
PubMed: 23330642
Affiliations:
Links toward previous steps (curation, corpus...)
Le document en format XML
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Ryel</name></author></analytic><series><title level="j">Physiologia plantarum</title><idno type="eISSN">1399-3054</idno><imprint><date when="2013" type="published">2013</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Chlorophyll (chemistry)</term><term>Chlorophyll (metabolism)</term><term>Dose-Response Relationship, Radiation (MeSH)</term><term>Ecosystem (MeSH)</term><term>Fluorescence (MeSH)</term><term>Plant Epidermis (physiology)</term><term>Plant Epidermis (radiation effects)</term><term>Plant Leaves (physiology)</term><term>Plant Leaves (radiation effects)</term><term>Populus (physiology)</term><term>Populus (radiation effects)</term><term>Sunlight (MeSH)</term><term>Ultraviolet Rays (MeSH)</term><term>Vicia faba (physiology)</term><term>Vicia faba (radiation effects)</term></keywords><keywords scheme="KwdFr" xml:lang="fr"><term>Chlorophylle (composition chimique)</term><term>Chlorophylle (métabolisme)</term><term>Feuilles de plante (effets des radiations)</term><term>Feuilles de plante (physiologie)</term><term>Fluorescence (MeSH)</term><term>Lumière du soleil (MeSH)</term><term>Populus (effets des radiations)</term><term>Populus (physiologie)</term><term>Rayons ultraviolets (MeSH)</term><term>Relation dose-effet des rayonnements (MeSH)</term><term>Vicia faba (effets des radiations)</term><term>Vicia faba (physiologie)</term><term>Écosystème (MeSH)</term><term>Épiderme végétal (effets des radiations)</term><term>Épiderme végétal (physiologie)</term></keywords><keywords scheme="MESH" type="chemical" qualifier="chemistry" xml:lang="en"><term>Chlorophyll</term></keywords><keywords scheme="MESH" type="chemical" qualifier="metabolism" xml:lang="en"><term>Chlorophyll</term></keywords><keywords scheme="MESH" qualifier="composition chimique" xml:lang="fr"><term>Chlorophylle</term></keywords><keywords scheme="MESH" qualifier="effets des radiations" xml:lang="fr"><term>Feuilles de plante</term><term>Populus</term><term>Vicia faba</term><term>Épiderme végétal</term></keywords><keywords scheme="MESH" qualifier="métabolisme" xml:lang="fr"><term>Chlorophylle</term></keywords><keywords scheme="MESH" qualifier="physiologie" xml:lang="fr"><term>Feuilles de plante</term><term>Populus</term><term>Vicia faba</term><term>Épiderme végétal</term></keywords><keywords scheme="MESH" qualifier="physiology" xml:lang="en"><term>Plant Epidermis</term><term>Plant Leaves</term><term>Populus</term><term>Vicia faba</term></keywords><keywords scheme="MESH" qualifier="radiation effects" xml:lang="en"><term>Plant Epidermis</term><term>Plant Leaves</term><term>Populus</term><term>Vicia faba</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Dose-Response Relationship, Radiation</term><term>Ecosystem</term><term>Fluorescence</term><term>Sunlight</term><term>Ultraviolet Rays</term></keywords><keywords scheme="MESH" xml:lang="fr"><term>Fluorescence</term><term>Lumière du soleil</term><term>Rayons ultraviolets</term><term>Relation dose-effet des rayonnements</term><term>Écosystème</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Epidermal UV transmittance (TUV ) and UV-absorbing compounds were measured in sun and shade leaves of Populus tremuloides and Vicia faba exposed to contrasting light environments under field conditions to evaluate UV acclimation potentials and regulatory roles of photosynthetically active radiation (PAR) and UV in UV-shielding. Within a natural canopy of P. tremuloides, TUV ranged from 4 to 98% and showed a strong nonlinear relationship with mid-day horizontal fluxes of PAR [photon flux density (PFD) = 6-1830 µmol m⁻² s⁻¹]; similar patterns were found for V. faba leaves that developed under a comparable PFD range. A series of field transfer experiments using neutral-density shade cloth and UV blocking/transmitting films indicated that PAR influenced TUV during leaf development to a greater degree than UV, and shade leaves of both species increased their UV-shielding when exposed to full sun; however, this required the presence of UV, with both UV-A and UV-B required for full acclimation. TUV of sun leaves of both species was largely unresponsive to shade either with or without UV. In most, but not all cases, changes in TUV were associated with alterations in the concentration of whole-leaf UV-absorbing compounds. These results suggest that, (1) moderate-to-high levels of PAR alone during leaf development can induce substantial UV-protection in field-grown plants, (2) mature shade leaves have the potential to adjust their UV-shielding which may reduce the detrimental effects of UV that could occur following sudden exposures to high light and (3) under field conditions, PAR and UV play different roles in regulating UV-shielding during and after leaf development.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">23330642</PMID><DateCompleted><Year>2014</Year><Month>04</Month><Day>21</Day></DateCompleted><DateRevised><Year>2013</Year><Month>09</Month><Day>12</Day></DateRevised><Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Electronic">1399-3054</ISSN><JournalIssue CitedMedium="Internet"><Volume>149</Volume><Issue>2</Issue><PubDate><Year>2013</Year><Month>Oct</Month></PubDate></JournalIssue><Title>Physiologia plantarum</Title><ISOAbbreviation>Physiol Plant</ISOAbbreviation></Journal><ArticleTitle>Adjustments in epidermal UV-transmittance of leaves in sun-shade transitions.</ArticleTitle><Pagination><MedlinePgn>200-13</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1111/ppl.12025</ELocationID><Abstract><AbstractText>Epidermal UV transmittance (TUV ) and UV-absorbing compounds were measured in sun and shade leaves of Populus tremuloides and Vicia faba exposed to contrasting light environments under field conditions to evaluate UV acclimation potentials and regulatory roles of photosynthetically active radiation (PAR) and UV in UV-shielding. Within a natural canopy of P. tremuloides, TUV ranged from 4 to 98% and showed a strong nonlinear relationship with mid-day horizontal fluxes of PAR [photon flux density (PFD) = 6-1830 µmol m⁻² s⁻¹]; similar patterns were found for V. faba leaves that developed under a comparable PFD range. A series of field transfer experiments using neutral-density shade cloth and UV blocking/transmitting films indicated that PAR influenced TUV during leaf development to a greater degree than UV, and shade leaves of both species increased their UV-shielding when exposed to full sun; however, this required the presence of UV, with both UV-A and UV-B required for full acclimation. TUV of sun leaves of both species was largely unresponsive to shade either with or without UV. In most, but not all cases, changes in TUV were associated with alterations in the concentration of whole-leaf UV-absorbing compounds. These results suggest that, (1) moderate-to-high levels of PAR alone during leaf development can induce substantial UV-protection in field-grown plants, (2) mature shade leaves have the potential to adjust their UV-shielding which may reduce the detrimental effects of UV that could occur following sudden exposures to high light and (3) under field conditions, PAR and UV play different roles in regulating UV-shielding during and after leaf development.</AbstractText><CopyrightInformation>© 2013 Scandinavian Plant Physiology Society.</CopyrightInformation></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Barnes</LastName><ForeName>Paul W</ForeName><Initials>PW</Initials><AffiliationInfo><Affiliation>Department of Biological Sciences, Loyola University New Orleans, New Orleans, LA, 70118, USA.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Kersting</LastName><ForeName>Anna R</ForeName><Initials>AR</Initials></Author><Author ValidYN="Y"><LastName>Flint</LastName><ForeName>Stephan D</ForeName><Initials>SD</Initials></Author><Author ValidYN="Y"><LastName>Beyschlag</LastName><ForeName>Wolfram</ForeName><Initials>W</Initials></Author><Author ValidYN="Y"><LastName>Ryel</LastName><ForeName>Ronald J</ForeName><Initials>RJ</Initials></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></PublicationTypeList><ArticleDate DateType="Electronic"><Year>2013</Year><Month>02</Month><Day>20</Day></ArticleDate></Article><MedlineJournalInfo><Country>Denmark</Country><MedlineTA>Physiol Plant</MedlineTA><NlmUniqueID>1256322</NlmUniqueID><ISSNLinking>0031-9317</ISSNLinking></MedlineJournalInfo><ChemicalList><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="Q000737" MajorTopicYN="N">chemistry</QualifierName><QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D004307" MajorTopicYN="N">Dose-Response Relationship, Radiation</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D017753" MajorTopicYN="N">Ecosystem</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D005453" MajorTopicYN="N">Fluorescence</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D019441" MajorTopicYN="N">Plant Epidermis</DescriptorName><QualifierName UI="Q000502" MajorTopicYN="Y">physiology</QualifierName><QualifierName UI="Q000528" MajorTopicYN="N">radiation effects</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D018515" 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PubStatus="received"><Year>2012</Year><Month>10</Month><Day>30</Day></PubMedPubDate><PubMedPubDate PubStatus="revised"><Year>2012</Year><Month>12</Month><Day>19</Day></PubMedPubDate><PubMedPubDate PubStatus="accepted"><Year>2012</Year><Month>12</Month><Day>21</Day></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2013</Year><Month>1</Month><Day>22</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>2013</Year><Month>1</Month><Day>22</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2014</Year><Month>4</Month><Day>22</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">23330642</ArticleId><ArticleId IdType="doi">10.1111/ppl.12025</ArticleId></ArticleIdList></PubmedData></pubmed><affiliations><list><country><li>États-Unis</li></country></list><tree><noCountry><name sortKey="Beyschlag, Wolfram" sort="Beyschlag, Wolfram" uniqKey="Beyschlag W" first="Wolfram" last="Beyschlag">Wolfram Beyschlag</name><name sortKey="Flint, Stephan D" sort="Flint, Stephan D" uniqKey="Flint S" first="Stephan D" last="Flint">Stephan D. Flint</name><name sortKey="Kersting, Anna R" sort="Kersting, Anna R" uniqKey="Kersting A" first="Anna R" last="Kersting">Anna R. Kersting</name><name sortKey="Ryel, Ronald J" sort="Ryel, Ronald J" uniqKey="Ryel R" first="Ronald J" last="Ryel">Ronald J. Ryel</name></noCountry><country name="États-Unis"><noRegion><name sortKey="Barnes, Paul W" sort="Barnes, Paul W" uniqKey="Barnes P" first="Paul W" last="Barnes">Paul W. Barnes</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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