The Review of the Development of Researches on Expansin

Abstract

Abstract: Expansins are cell wall proteins that induce pH dependent wall extension and stress relaxation by weakening the non-covalent interactions. It has been realized that expansins belong to two protein families, the alpha-and beta-expansins, Expansin proteins have so far been identified in most plants and most expansin genes have been cloned.The research shows that every expansin expresses in high special location and high special cell And the expression of every expansin is regulated strictly in development time and space and is regulated positivly by hormone and environments factors. It has been proposed that expansins have rather diverse effects throughout the whole developmental process. Besides playing an apparently key role in wall expansion, expansins have been implicated in an increasing number of processes including cell enlargement, seed germination, root hair formation, root growth, leaf primordium initiation,leaf growth, softening of fruits, fruit abscission and growth of the pollen tube of grasses through the stigma and the style. In this article, we expatiate the research proceeding on expansin all-roundly.

Gao ying, Wang Xuechen. The Review of the Development of Researches on Expansin[J]. Chinese Agricultural Science Bulletin, 2005, 21(7): 82-82.

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