| Literature DB >> 16659531 |
Abstract
Carbon 13 isotope discrimination by ribulose 1,5-diphosphate carboxylase from soybean (Glycine max [Merr.] cv. Amsoy) was studied as a function of temperature, bicarbonate concentration, and pH. None of these factors affected the degree of discrimination against (13)C. The average delta(13)C was -28.3%, a value close to that found for whole C(3) plants. The zero temperature response observed here with ribulose 1,5-diphosphate carboxylase corroborates data from whole plants. The lack of effect of bicarbonate concentration on discrimination is consistent with both current theories of alternate forms of carboxylase.Entities:
Year: 1976 PMID: 16659531 PMCID: PMC542077 DOI: 10.1104/pp.57.4.580
Source DB: PubMed Journal: Plant Physiol ISSN: 0032-0889 Impact factor: 8.340