MOLECULAR REGULATION OF AMINO-ACID BIOSYNTHESIS IN PLANTS

Our understanding of amino acid biosynthesis in plants has grown by le aps and bounds in the last decade. It appears that most of the amino a cid biosynthesis takes place in the chloroplast. Recent demonstration of glutamine synthetase and DAHP synthase in the vascular tissue has a dded a new dimension in the complexity of the nitrogen cycle in plants . Isolation of various genes and transformation of plants with the mod ified forms of the genes are providing tools for understanding the reg ulation of various pathways. Plant transformation approaches are also going to provide the food of the future with an improved amino acid co mposition.