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Mesophyll conductance: a route to improve wheat photosynthesis.

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Improvement of photosynthetic efficiency is a promising approach to increase the yield potential of grain crops. The mesophyll conductance describes the travel of CO2 from substomal cavities to the site of Rubisco, a limiting step in photosynthesis. Screenings of the physiological diversity of different wheat varieties will identify the best performance in assimilation and mesophyll conductance rates. Carbonic anhydrase is a key enzyme that supplies the right substrate for carboxylation of RuBP by Rubisco and the aquaporin is a component that facilitates the travel of CO2 to the Rubisco site. These two proteins will be overexpressed in wheat and plants evaluated in their photosynthetic capacities. The aim is to obtain varieties with improved mesophyll conductance rates, which will increase the photosynthesis and the yield of this important crop.

This talk is part of the Plant Sciences Research Seminars series.

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