Nodules, aminotransferases

Aspartate aminotransferase P level effected by age of nodule, B, R Grimes and Masterson (1971) Ryan et al. (1972) Ryan and Fottrell (1974) Stripf and Werner (1976, 1978) Werner and Mdrschel (1978) Reynolds and Famden (1979)... 

The specific activity of these enzymes in the plant fraction of lupin nodules increases over the same time period as the increase in Ne-fixing activity in the bacteroids (Scott et al., 1976 Bolandet ai, 1979 Reynolds and Farnden, 1979). Asparagine synthetase has only been reported to date in nodules of lupin (Scott et ai, 1976 Radyukina et ai, 1977 Boland et al., 1979), however, numerous reports of aspartate aminotransferase activity in the plant fraction of several legume species have appeared (Table I). 

Several of the key enzymes in the acetylated pathway have been detected in plants. These include acetyl-CoArglutamate iV-acetyltransferase (Morris and Thompson, 1975, 1977 Staub and Denes, 1966), A-acetylglutamate 5-phosphotransferase (Farago and Denes, 1967 Cybis and Davis, 1974 McKay and Shargool, 1977), and A -acetylomithine 2-oxoglutarate aminotransferase (Dougall and Fulton, 1967). A model for the pathway of CIT synthesis in nodules of Alnus is presented in Fig. 11. 

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