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Lutein epoxide cycle, light harvesting and photoprotection in species of the tropical tree genus Inga

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dc.contributor.author Matsubara, Shizue en
dc.contributor.author Krause, G. Heinrich en
dc.contributor.author Seltmann, Martin en
dc.contributor.author Virgo, Aurelio en
dc.contributor.author Kursar, Thomas A. en
dc.contributor.author Jahns, Peter en
dc.contributor.author Winter, Klaus en
dc.date.accessioned 2011-02-16T18:25:07Z
dc.date.available 2011-02-16T18:25:07Z
dc.date.issued 2008
dc.identifier.citation Matsubara, Shizue, Krause, G. Heinrich, Seltmann, Martin, Virgo, Aurelio, Kursar, Thomas A., Jahns, Peter, and Winter, Klaus. 2008. "<a href="https%3A%2F%2Frepository.si.edu%2Fhandle%2F10088%2F12041">Lutein epoxide cycle, light harvesting and photoprotection in species of the tropical tree genus Inga</a>." <em>Plant, Cell and Environment</em>. 31 (4):548&ndash;561. <a href="https://doi.org/10.1111/j.1365-3040.2008.01788.x">https://doi.org/10.1111/j.1365-3040.2008.01788.x</a> en
dc.identifier.issn 0140-7791
dc.identifier.uri http://hdl.handle.net/10088/12041
dc.description.abstract ABSTRACT Dynamics and possible function of the lutein epoxide (Lx) cycle, that is, the reversible conversion of Lx to lutein (L) in the light-harvesting antennae, were investigated in leaves of tropical tree species. Photosynthetic pigments were quantified in nine Inga species and species from three other genera. In Inga, Lx levels were high in shade leaves (mostly above 20 mmol mol-1 chlorophyll) and low in sun leaves. In Virola surinamensis, both sun and shade leaves exhibited very high Lx contents (about 60 mmol mol-1 chlorophyll). In Inga marginata grown under high irradiance, Lx slowly accumulated within several days upon transfer to deep shade. When shade leaves of I. marginata were briefly exposed to the sunlight, both violaxanthin and Lx were quickly de-epoxidized. Subsequently, overnight recovery occurred only for violaxanthin, not for Lx. In such leaves, containing reduced levels of Lx and increased levels of L, chlorophyll fluorescence induction showed significantly slower reduction of the photosystem II electron acceptor, QA, and faster formation as well as a higher level of non-photochemical quenching. The results indicate that slow Lx accumulation in Inga leaves may improve light harvesting under limiting light, while quick de-epoxidation of Lx to L in response to excess light may enhance photoprotection. en
dc.relation.ispartof Plant, Cell and Environment en
dc.title Lutein epoxide cycle, light harvesting and photoprotection in species of the tropical tree genus Inga en
dc.type Journal Article en
dc.identifier.srbnumber 74341
dc.identifier.doi 10.1111/j.1365-3040.2008.01788.x
rft.jtitle Plant, Cell and Environment
rft.volume 31
rft.issue 4
rft.spage 548
rft.epage 561
dc.description.SIUnit NH-EOL en
dc.description.SIUnit Forces of Change en
dc.description.SIUnit Santa Cruz en
dc.description.SIUnit Gamboa en
dc.description.SIUnit STRI en
dc.citation.spage 548
dc.citation.epage 561

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