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Chlorophyll fluorescence in micropropagated Rhododendron ponticum subsp baeticum plants in response to different irradiances

2010Journal article Restricted access
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dc.contributor.authorOsório, Maria Leonor
dc.contributor.authorOsório, Júlio
dc.contributor.authorRomano, Anabela
dc.date.accessioned2015-06-18T10:12:36Z
dc.date.available2015-06-18T10:12:36Z
dc.date.issued2010
dc.description.abstractThe aim of this study was to investigate acclimation of micropropagated plants of Rhododendron ponticum subsp. baeticum to different irradiances and recovery after exposure to high irradiance. Plants grown under high (HL) or intermediate (IL) irradiances displayed higher values of maximum electron transport rate (ETR(max)) and light saturation coefficient (E(k)) than plants grown under low irradiance (LL). The capacity of tolerance to photoinhibition (as assessed by the response of photochemical quenching, q(p)) varied as follows: HL > IL > LL. Thermal energy dissipation (q(N)) was also affected by growth irradiance, with higher saturating values being observed in HL plants. Light-response curves suggested a gradual replacement of q(p) by q(N) with increasing irradiance. Following exposure to irradiance higher than 1500 mu mol m(-2) s(-1), a prolonged reduction of the maximal photochemical efficiency of PS 2 (F(v)/F(m)) was observed in LL plants, indicating the occurrence of chronic photoinhibition. In contrary, the decrease in F(v)/F(m) was quickly reverted in HL plants, pointing to a reversible photoinhibition.
dc.identifier.doihttp://dx.doi.org/10.1007/s10535-010-0076-1
dc.identifier.issn0006-3134
dc.identifier.otherAUT: JOS01477; ARO01015;
dc.identifier.urihttp://hdl.handle.net/10400.1/6417
dc.language.isoeng
dc.peerreviewedyes
dc.publisherSpringer Verlag
dc.relation.isbasedonP-003-34J
dc.subjectElectron transport
dc.subjectPhotochemical quenching
dc.subjectPhotoinhibition
dc.subjectThermal energy dissipation
dc.titleChlorophyll fluorescence in micropropagated Rhododendron ponticum subsp baeticum plants in response to different irradiances
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage422
oaire.citation.issue3
oaire.citation.startPage415
oaire.citation.titleBiologia Plantarum
oaire.citation.volume54
person.familyNameOsório
person.familyNameOsório
person.familyNameRomano
person.givenNameMaria Leonor
person.givenNameJúlio
person.givenNameAnabela
person.identifier.ciencia-id8A18-7E9A-3B0E
person.identifier.orcid0000-0002-7713-6497
person.identifier.orcid0000-0002-4054-4091
person.identifier.orcid0000-0002-7204-7428
person.identifier.scopus-author-id7006394339
person.identifier.scopus-author-id9938818600
person.identifier.scopus-author-id56249997600
rcaap.rightsrestrictedAccess
rcaap.typearticle
relation.isAuthorOfPublication796eec66-f451-4ebf-938a-866b703df3ea
relation.isAuthorOfPublicationf4547ef6-b9f9-49e6-a7b3-ad71f623cfdf
relation.isAuthorOfPublicatione3343b60-17d3-4f5e-a2bf-06f26da69206
relation.isAuthorOfPublication.latestForDiscovery796eec66-f451-4ebf-938a-866b703df3ea

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