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

Werner C, Correia O, Beyschlag W (2002)
FUNCTIONAL PLANT BIOLOGY 29(8): 999-1011.

Zeitschriftenaufsatz | Veröffentlicht | Englisch
 
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Abstract / Bemerkung
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 significantly correlated with predawn and midday water potentials, respectively, and a grouping of the macchia species into three functional groups is proposed according to this relationship.
Stichworte
Mediterranean macchia; chronic and dynamic photoinhibition; chlorophyll fluorescence; drought; leaf orientation; water potentials; semi-deciduous species; evergreen sclerophylls
Erscheinungsjahr
2002
Zeitschriftentitel
FUNCTIONAL PLANT BIOLOGY
Band
29
Ausgabe
8
Seite(n)
999-1011
ISSN
1445-4408
Page URI
https://pub.uni-bielefeld.de/record/1613972

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Werner C, Correia O, Beyschlag W. Characteristic patterns of chronic and dynamic photoinhibition of different functional groups in a Mediterranean ecosystem. FUNCTIONAL PLANT BIOLOGY. 2002;29(8):999-1011.
Werner, C., Correia, O., & Beyschlag, W. (2002). Characteristic patterns of chronic and dynamic photoinhibition of different functional groups in a Mediterranean ecosystem. FUNCTIONAL PLANT BIOLOGY, 29(8), 999-1011. doi:10.1071/PP01143
Werner, C., Correia, O., and Beyschlag, W. (2002). Characteristic patterns of chronic and dynamic photoinhibition of different functional groups in a Mediterranean ecosystem. FUNCTIONAL PLANT BIOLOGY 29, 999-1011.
Werner, C., Correia, O., & Beyschlag, W., 2002. Characteristic patterns of chronic and dynamic photoinhibition of different functional groups in a Mediterranean ecosystem. FUNCTIONAL PLANT BIOLOGY, 29(8), p 999-1011.
C. Werner, O. Correia, and W. Beyschlag, “Characteristic patterns of chronic and dynamic photoinhibition of different functional groups in a Mediterranean ecosystem”, FUNCTIONAL PLANT BIOLOGY, vol. 29, 2002, pp. 999-1011.
Werner, C., Correia, O., Beyschlag, W.: Characteristic patterns of chronic and dynamic photoinhibition of different functional groups in a Mediterranean ecosystem. FUNCTIONAL PLANT BIOLOGY. 29, 999-1011 (2002).
Werner, Christiane, Correia, O, and Beyschlag, Wolfram. “Characteristic patterns of chronic and dynamic photoinhibition of different functional groups in a Mediterranean ecosystem”. FUNCTIONAL PLANT BIOLOGY 29.8 (2002): 999-1011.