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Rate of cell division determines sink strength

Plants adjust their development of sink organs in response to the availability of photosynthate over a range of CO2 and light conditions. Chen and Setter (pp. 373-381) conclude that potato tuber growth is modulated largely by altering the rate of cell division. This in turn is related to cambial-zone glucose and soluble-invertase in a pattern suggesting the involvement of a glucose-signalling pathway.





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