Light stress in chloroplasts, Biology

Light Stress in Chloroplasts

As mentioned earlier, very high light intensity can inhibit photosynthesis due to accumulation of excess of excitation energy. A portion of this results in the accumulation of reduced plastoquinone in the pool of electron carriers. Low light can exert similar effects if the terminal electron acceptor viz. CO2 is limiting as happens during dehydration followed by closure of stomata.

 

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