Guard cell biochemistry: response to environmental stimuli causing changes in gas exchange

Technical Report · Wed Jan 01 04:00:00 EST 1986

OSTI ID:5951238

Outlaw, Jr, W H

Our understanding of how the light reactions of photosynthesis influence carbon metabolism in guard cells is rudimentary. This state of affairs is understandable; reliable reports of PS II in guard cells were published only two years ago. At this point, I wish to warn against complacency in drawing strict analogies between guard cell chloroplast function and that in other cells. In general, guard cell chloroplasts and their mesophyll counterparts differ in morphology, for example, the guard cell organelles are smaller, less abundant, and paler, have fewer thylakoids/granna, have areas of peripheral reticulum, and contain relatively more starch. One biochemical difference underlying these morphological ones has already been identified (fluorescence kinetics). 107 refs., 11 figs., 2 tabs.

• Research Organization: Florida State Univ., Tallahassee (USA)
• DOE Contract Number: AS05-81ER10803
• OSTI ID: 5951238
• Report Number(s): DOE/ER/10803-5; ON: DE86010287
• Country of Publication: United States
• Language: English

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PHOTOSYNTHETIC REACTION CENTERS
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