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Chlorophyll fluorescence quenching parameters and pigment content of wild‐type tomato plants ( Lycopersicon esculentum Mill. cv. Moneymaker) were analyzed upon mechanical wounding, current application and heat treatment. Upon all stimuli the non‐photochemical quenching increased significantly in local and systemic tissue. Vice versa, the photochemical quenching decreased. Total chlorophyll content remained almost constant, zeaxanthin content increased 5–6‐fold, antheraxanthin content rose also, violaxanthin and neoxanthin on the other hand decreased significantly. These data indicate a similarity of processes on the level of photosynthesis and pigment composition that are induced by light‐stress and those induced by mechanical wounding, current application and heat treatment, which all lead to an inhibition of photosynthesis.
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Herde et al. (1999) studied this question.
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