Glyoxylate rather than ascorbate is an efficient precursor for oxalate biosynthesis in rice.

ABSTRACT: Oxalate is widely distributed in the plant kingdom. While excess oxalate in food crops is detrimental to animal and human health, it may play various functional roles in plants, particularly for coping with environmental stresses. Understanding its biosynthetic mechanism in plants, therefore, becomes increasingly important both theoretically and practically. However, it is still a matter of debate as to what precursor and pathway are ultimately used for oxalate biosynthesis in plants. In this study, both physiological and molecular approaches were applied to address these questions. First, it was observed that when glycolate or glyoxylate was fed into detached leaves, both organic acids were equally effective in stimulating oxalate accumulation. In addition, the stimulation could be comple

SUBMITTER: Yu L 

PROVIDER: S-EPMC2914580 | biostudies-literature | 2010 Jun

REPOSITORIES: biostudies-literature