Characteristic patterns of chronic and dynamic photoinhibition of different functional groups in a Mediterranean ecosystem

Functional Plant Biology : FPB
Christiane WernerWolfram Beyschlag

Abstract

To analyse characteristic patterns of dynamic and chronic photoinhibition within a plant community, a new technique is proposed, which is based on the long- and short-term recovery time of maximum photochemical efficiency of PSII (F v/F m) after environmental stress. Chronic photoinhibition was determined as a sustainable decrease in predawn F v/F m, occurring during periods of prolonged stress, whereas dynamic photoinhibition was assessed from the fully reversible diurnal decline in F v/F m. Applied to a Mediterranean macchia ecosystem, this definition allowed the characterization of typical annual patterns of chronic and dynamic photoinhibition. Both types of photoinhibition were highest during summer drought. However, differences emerged among the ten dominant macchia species regarding their susceptibility to chronic photoinhibition during different seasons. Chronic and dynamic photoinhibition were dependent on leaf orientation. Semi-deciduous species avoided enhanced chronic photoinhibition through a reduction of excessive light interception by vertical foliage orientation during summer, whereas evergreen sclerophylls did not exhibit pronounced structural photoprotective mechanisms. Chronic and total photoinhibition were si...Continue Reading

Citations

Feb 1, 2015·Functional Plant Biology : FPB·Olga M GrantM Manuela Chaves
Oct 20, 2018·Scientific Reports·Adriel N DiasEduardo G Pereira
Jun 15, 2007·Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes·Susana Redondo-GómezEnrique Figueroa
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May 3, 2018·Scientific Reports·A M Yáñez-SerranoC Werner
Jan 4, 2019·The New Phytologist·Maren DubbertChristiane Werner
Aug 8, 2018·Frontiers in Plant Science·Simon HaberstrohChristiane Werner
Nov 13, 2010·Tree Physiology·Katherine G RascherChristiane Werner
Apr 25, 2007·Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes·Susana Redondo-GómezEnrique Figueroa
Oct 1, 2004·Functional Plant Biology : FPB·José I García-PlazaolaJosé M Becerril
Sep 14, 2010·Journal of Hazardous Materials·Susana Redondo-GómezLuis Andrades-Moreno
Jan 8, 2021·Frontiers in Plant Science·Adela M Sánchez-MoreirasFabrizio Araniti
Apr 4, 2021·Plants·Fernando Henrique ReboredoJosé C Ramalho

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