| pubmed-article:16325302 | rdf:type | pubmed:Citation | lld:pubmed |
| pubmed-article:16325302 | lifeskim:mentions | umls-concept:C0162429 | lld:lifeskim |
| pubmed-article:16325302 | lifeskim:mentions | umls-concept:C0162748 | lld:lifeskim |
| pubmed-article:16325302 | lifeskim:mentions | umls-concept:C0240321 | lld:lifeskim |
| pubmed-article:16325302 | lifeskim:mentions | umls-concept:C0043047 | lld:lifeskim |
| pubmed-article:16325302 | lifeskim:mentions | umls-concept:C0332157 | lld:lifeskim |
| pubmed-article:16325302 | lifeskim:mentions | umls-concept:C0441889 | lld:lifeskim |
| pubmed-article:16325302 | lifeskim:mentions | umls-concept:C0011155 | lld:lifeskim |
| pubmed-article:16325302 | lifeskim:mentions | umls-concept:C1327206 | lld:lifeskim |
| pubmed-article:16325302 | lifeskim:mentions | umls-concept:C2349975 | lld:lifeskim |
| pubmed-article:16325302 | lifeskim:mentions | umls-concept:C0241737 | lld:lifeskim |
| pubmed-article:16325302 | lifeskim:mentions | umls-concept:C0076781 | lld:lifeskim |
| pubmed-article:16325302 | pubmed:issue | 6 | lld:pubmed |
| pubmed-article:16325302 | pubmed:dateCreated | 2006-3-20 | lld:pubmed |
| pubmed-article:16325302 | pubmed:abstractText | Photosynthesis operates in a constantly shifting balance between efficient capture of solar energy and its rapid dissipation when captured in excess. In an attempt to better understand the role of alpha-tocopherol in plant photoprotection, we examined the changes in alpha-tocopherol quinone (alpha-TQ), in parallel with those of other low-molecular-weight antioxidants, in rosemary plants exposed to water deficit during a Mediterranean winter. Relative leaf water content (RWC) decreased from about 85% to approximately 65% in drought, but plants did not show symptoms of oxidative damage, as indicated by constant Fv/Fm ratios and malondialdehyde (MDA) levels. alpha-TQ was present at concentrations of 20 mmol per 100 mol of chlorophyll, and represented less than 1% of total tocopherol content in non-stressed leaves. Although alpha-tocopherol levels were not significantly altered, alpha-TQ reached up to 36 mmol per 100 mol of chlorophyll under stress (under both high light and after exposure to increasing water deficit at lower light intensities). Furthermore, both alpha-TQ and xanthophyll cycle de-epoxidation were strongly negatively correlated with the relative efficiency of photosystem II photochemistry (phiPSII) at midday. The biological significance of alpha-tocopherol and alpha-TQ in the network of photo- and antioxidative protection mechanisms evolved by plants to withstand stress is discussed. | lld:pubmed |
| pubmed-article:16325302 | pubmed:language | eng | lld:pubmed |
| pubmed-article:16325302 | pubmed:journal | http://linkedlifedata.com/r... | lld:pubmed |
| pubmed-article:16325302 | pubmed:citationSubset | IM | lld:pubmed |
| pubmed-article:16325302 | pubmed:chemical | http://linkedlifedata.com/r... | lld:pubmed |
| pubmed-article:16325302 | pubmed:chemical | http://linkedlifedata.com/r... | lld:pubmed |
| pubmed-article:16325302 | pubmed:chemical | http://linkedlifedata.com/r... | lld:pubmed |
| pubmed-article:16325302 | pubmed:chemical | http://linkedlifedata.com/r... | lld:pubmed |
| pubmed-article:16325302 | pubmed:chemical | http://linkedlifedata.com/r... | lld:pubmed |
| pubmed-article:16325302 | pubmed:chemical | http://linkedlifedata.com/r... | lld:pubmed |
| pubmed-article:16325302 | pubmed:chemical | http://linkedlifedata.com/r... | lld:pubmed |
| pubmed-article:16325302 | pubmed:status | MEDLINE | lld:pubmed |
| pubmed-article:16325302 | pubmed:month | Apr | lld:pubmed |
| pubmed-article:16325302 | pubmed:issn | 0176-1617 | lld:pubmed |
| pubmed-article:16325302 | pubmed:author | pubmed-author:Munné-BoschSe... | lld:pubmed |
| pubmed-article:16325302 | pubmed:author | pubmed-author:AlegreLeonorL | lld:pubmed |
| pubmed-article:16325302 | pubmed:author | pubmed-author:MüllerMarenM | lld:pubmed |
| pubmed-article:16325302 | pubmed:author | pubmed-author:HernándezIker... | lld:pubmed |
| pubmed-article:16325302 | pubmed:issnType | Print | lld:pubmed |
| pubmed-article:16325302 | pubmed:volume | 163 | lld:pubmed |
| pubmed-article:16325302 | pubmed:owner | NLM | lld:pubmed |
| pubmed-article:16325302 | pubmed:authorsComplete | Y | lld:pubmed |
| pubmed-article:16325302 | pubmed:pagination | 601-6 | lld:pubmed |
| pubmed-article:16325302 | pubmed:dateRevised | 2008-11-21 | lld:pubmed |
| pubmed-article:16325302 | pubmed:meshHeading | pubmed-meshheading:16325302... | lld:pubmed |
| pubmed-article:16325302 | pubmed:meshHeading | pubmed-meshheading:16325302... | lld:pubmed |
| pubmed-article:16325302 | pubmed:meshHeading | pubmed-meshheading:16325302... | lld:pubmed |
| pubmed-article:16325302 | pubmed:meshHeading | pubmed-meshheading:16325302... | lld:pubmed |
| pubmed-article:16325302 | pubmed:meshHeading | pubmed-meshheading:16325302... | lld:pubmed |
| pubmed-article:16325302 | pubmed:meshHeading | pubmed-meshheading:16325302... | lld:pubmed |
| pubmed-article:16325302 | pubmed:meshHeading | pubmed-meshheading:16325302... | lld:pubmed |
| pubmed-article:16325302 | pubmed:meshHeading | pubmed-meshheading:16325302... | lld:pubmed |
| pubmed-article:16325302 | pubmed:meshHeading | pubmed-meshheading:16325302... | lld:pubmed |
| pubmed-article:16325302 | pubmed:meshHeading | pubmed-meshheading:16325302... | lld:pubmed |
| pubmed-article:16325302 | pubmed:year | 2006 | lld:pubmed |
| pubmed-article:16325302 | pubmed:articleTitle | Enhanced alpha-tocopherol quinone levels and xanthophyll cycle de-epoxidation in rosemary plants exposed to water deficit during a Mediterranean winter. | lld:pubmed |
| pubmed-article:16325302 | pubmed:affiliation | Departament de Biologia Vegetal, Universitat de Barcelona, Facultat de Biologia, Avinguda Diagonal 645, 08028 Barcelona, Spain. | lld:pubmed |
| pubmed-article:16325302 | pubmed:publicationType | Journal Article | lld:pubmed |
