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INJURY OF WATER STRESS TO PHOTOSYNTHETIC MECHANISM IN RICE

Gao Yu-zhu

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Abstract

The mechanism of reduction in photosynthesis in rice leaves was studied by CO_2 exchange method. The results showed that the reduction in photosynthetic rate in rice leaves under water stress was due to the combining effects of both stomatal and non-stomatal factors. The non-stomatal effects resulted from the reductions in RuBiSco activity, RuBP regenerating rate, and photosynthetic electron transport rate which inhibited activity of photophosphorylation.

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What this paper is about

The mechanism of reduction in photosynthesis in rice leaves was studied by CO_2 exchange method. The results showed that the reduction in photosynthetic rate in rice leaves under water stress was due to the combining effects of both stomatal and non-stomatal factors. The non-stomatal effects resulted from the reductions in RuBiSco activity, RuBP regenerating rate, and photosynthetic electron transport rate which inhibited activity of photophosphorylation.

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Available abstract

The mechanism of reduction in photosynthesis in rice leaves was studied by CO_2 exchange method. The results showed that the reduction in photosynthetic rate in rice leaves under water stress was due to the combining effects of both stomatal and non-stomatal factors. The non-stomatal effects resulted from the reductions in RuBiSco activity, RuBP regenerating rate, and photosynthetic electron transport rate which inhibited activity of photophosphorylation.

Key concepts: Photosynthesis, Photophosphorylation, RuBisCO, Electron transport chain, Water stress, Chemistry, Mechanism (biology), Stomatal conductance

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