Dark induction of the photoprotective xanthophyll cycle in response to dehydration

Some plants tolerate tissue dehydration. Dehydration conditions suppress photosynthesis, exacerbating photooxidative stress. In this study, fern samples were collected from the field, desiccated in darkness, and subsequently re-watered. During dark dehydration, zeaxanthin (Z) was formed and maximal...

Ausführliche Beschreibung

Bibliographische Detailangaben
Veröffentlicht in:Journal of plant physiology. - 1979. - 166(2009), 16 vom: 01. Nov., Seite 1734-44
1. Verfasser: Fernández-Marín, Beatriz (VerfasserIn)
Weitere Verfasser: Balaguer, Luis, Esteban, Raquel, Becerril, José María, García-Plazaola, José Ignacio
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2009
Zugriff auf das übergeordnete Werk:Journal of plant physiology
Schlagworte:Journal Article Research Support, Non-U.S. Gov't Photosystem II Protein Complex Xanthophylls Water 059QF0KO0R
LEADER 01000naa a22002652 4500
001 NLM189406755
003 DE-627
005 20231223183603.0
007 cr uuu---uuuuu
008 231223s2009 xx |||||o 00| ||eng c
024 7 |a 10.1016/j.jplph.2009.04.019  |2 doi 
028 5 2 |a pubmed24n0631.xml 
035 |a (DE-627)NLM189406755 
035 |a (NLM)19539398 
040 |a DE-627  |b ger  |c DE-627  |e rakwb 
041 |a eng 
100 1 |a Fernández-Marín, Beatriz  |e verfasserin  |4 aut 
245 1 0 |a Dark induction of the photoprotective xanthophyll cycle in response to dehydration 
264 1 |c 2009 
336 |a Text  |b txt  |2 rdacontent 
337 |a ƒaComputermedien  |b c  |2 rdamedia 
338 |a ƒa Online-Ressource  |b cr  |2 rdacarrier 
500 |a Date Completed 30.11.2009 
500 |a Date Revised 30.09.2020 
500 |a published: Print-Electronic 
500 |a Citation Status MEDLINE 
520 |a Some plants tolerate tissue dehydration. Dehydration conditions suppress photosynthesis, exacerbating photooxidative stress. In this study, fern samples were collected from the field, desiccated in darkness, and subsequently re-watered. During dark dehydration, zeaxanthin (Z) was formed and maximal photochemical efficiency of PS II was strongly reduced. Rehydration in the dark reversed these effects. Violaxanthin de-epoxidase was responsible for the dark formation of Z as illustrated by its complete inhibition by DTT. Nonetheless, its activity was not affected by nigericin, indicating that Z formation in the dark could be a process independent of the transmembrane pH-gradient into the thylakoids. Synthesis de novo of Z was rejected after blocking carotenogenesis with norfluorazon. Dark formation of Z was also observed in dehydrating leaves of desiccation-intolerant plants, which seems to indicate that this is a phenomenon scattered among different taxa within the plant kingdom. Plants may trigger this mechanism during dehydration, for chlorophyll protection during desiccation, and for faster acclimation when rehydrating conditions return. Violaxanthin de-epoxidation to form Z is typically a light-dependent process, but the formation induced solely by dehydration might represent an anticipatory mechanism for preventing early morning photodamage in desiccation-tolerant plants such as the fern Ceterach officinarum 
650 4 |a Journal Article 
650 4 |a Research Support, Non-U.S. Gov't 
650 7 |a Photosystem II Protein Complex  |2 NLM 
650 7 |a Xanthophylls  |2 NLM 
650 7 |a Water  |2 NLM 
650 7 |a 059QF0KO0R  |2 NLM 
700 1 |a Balaguer, Luis  |e verfasserin  |4 aut 
700 1 |a Esteban, Raquel  |e verfasserin  |4 aut 
700 1 |a Becerril, José María  |e verfasserin  |4 aut 
700 1 |a García-Plazaola, José Ignacio  |e verfasserin  |4 aut 
773 0 8 |i Enthalten in  |t Journal of plant physiology  |d 1979  |g 166(2009), 16 vom: 01. Nov., Seite 1734-44  |w (DE-627)NLM098174622  |x 1618-1328  |7 nnns 
773 1 8 |g volume:166  |g year:2009  |g number:16  |g day:01  |g month:11  |g pages:1734-44 
856 4 0 |u http://dx.doi.org/10.1016/j.jplph.2009.04.019  |3 Volltext 
912 |a GBV_USEFLAG_A 
912 |a SYSFLAG_A 
912 |a GBV_NLM 
912 |a GBV_ILN_350 
951 |a AR 
952 |d 166  |j 2009  |e 16  |b 01  |c 11  |h 1734-44