Malate Synthase Activity in Cotton and Other Ungerminated Oilseeds: A Survey 1

AUTOR(ES)

Miernyk, Jan A.

RESUMO

Extracts from several species and varieties of ungerminated cotton seeds plus homogenates from 18 other oilseeds (representing 11 different families) were examined for malate synthase and isocitrate lyase activity. Malate synthase activities in the various cotton seeds ranged from 35 to 129% of the units per dry seed weight found in Deltapine 16 cotton. For other oilseeds, the range was from 0.3 to 58% of Deltapine 16 cotton. Castor bean (Ricinus communis L.) had the least activity per mg dry weight (12-fold lower than the next lowest species), while Pima cotton (Gossypium barbadense L.) had the highest level (8.53 units). On a per seed basis, these values were 15 and 747 nanomoles per minute.

Documentos Relacionados

• Role of Malate Synthase in Citric Acid Synthesis by Maturing Cotton Embryos: A Proposal 1
• Biosynthesis of Very-Long-Chain Polyunsaturated Fatty Acids in Transgenic Oilseeds: Constraints on Their AccumulationW⃞
• Cottonseed Malate Synthase 1: Biogenesis in Maturing and Germinated Seeds
• Osmoregulation in Cotton Fiber: Accumulation of Potassium and Malate during Growth 1
• Cottonseed Malate Synthase 1: Purification and Immunochemical Characterization