REWM 3500 Rangeland Plant Ecophysiology Wednesday, September 9, 2009 Responses to excess light...

REWM 3500Rangeland Plant EcophysiologyWednesday, September 9, 2009

Responses to excess light

Photoinhibition and photo-oxidative damage

The Xanthophyll cycle

Chloroplast movements

7.19 Funnelling of excitation from antenna system toward reaction center

9.12 Excess light energy in relation to a light-response curve of photosynthetic O2 evolution

9.15 Changes in the light-response curves of photosynthesis caused by photoinhibition

7.34 Regulation of photon capture and the protection and repair of photodamage

7.35 Chemical structure of violaxanthin, antheraxanthin, and zeaxanthin

9.13 Diurnal changes in xanthophyll content as a function of irradiance

9.14 Chloroplast distribution in photosynthesizing cells of the duckweed Lemna

Terms and concepts to understand:

Photoinhibition (dynamic and chronic)Photo-oxidative damage CarotenoidsXanthophyll cycleZeaxanthin Violaxanthin Chloroplast movements