摘要
The aurea mutant （Su/su）of tobacco is a nuclear mutation found in Nicotiana tobacum Var. John Williams Broadleaf （Su/su）. Under greenhouse conditions and atmosphere CO2 levels, the yellow mutant tobacco （Su/su） grows much slower than the dark green wild type （su/su）. Zelitch reported that the yellow mutant has a higher photorespiratory rate and a lower net rate of photosynthesis, compared with the wild type. RuBP carboxylase/oxygenase is a key enzyme in photosynthesis and photorespiration, and the small subunit of the enzyme is nuclear-encoded. This study was designed to examine if the nuclear gene mutation influenced the structure and properties of the enzyme.
