The Absorption of Amino Acids by Plants and their Effect on Plant Physiological Process

Luo An cheng;Zhou Yan 1. Zhejiang Agricultural Untversity 1. The Agricultural Department of Zheitang Province Hangzhou, China Post Code: 310029  

In this paper, the author has systematically ela brated the turnover of amino acids in soll and organic manure,the absorption of amino acids by plants, the interaction between amino acids and inorganic nitrgen the possible a bsorption mechanisms the inversion of absorbed amino acids in plants and their effect on the plant physiological process. it is pointed out thal many kinds of amino acids can easily be absorbed in molecular forms by plants, and some plants prefer amlno acids such as Arg to in organic nitrogen. The absorption of amino acids is an active process,which is inhabitad by respiration inhabitors. The absorbed amino acids can immediately participate in plant metabolism. Methionine has a negative effect on plant growth br incresing the synthesis of ethylene and inhabiting the transform of Asp to other amino acide Many kinds of amino acids can stimulate plant growth and provent plants from the toxity of heavy metal ions. The amino acids absorbed directly by planl roots not only provide plants with nitrogen but also have signifcant effect on plant metabolism.

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