Reversible, water stress-induced non-uniform chlorophyll fluorescence quenchinginwilting leaves of Potentilla reptans may not be due topatchy stomatal closure
After exposure to full sunlight under natural conditions, attached leaves of the common meadow weed Potentilla reptans show non-uniform ('patchy') chlorophyll fluorescence quenching in the early stages of fluorescence transients. These areas of bright fluorescence can be readily reproduced in detached leaves that are allowed to wilt on the laboratory bench in weak light. The extent and duration of the patchiness increases with increasing water stress (higher relative saturation deficits)....[Show more]
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