Induction of biosynthesis of osmoprotectants in higher plants by hydrogen peroxide and its application to agriculture

Abstract

We have found that hydrogen peroxide at low levels can induce synthesis of osmoprotectants, e.g. glycinebetaine in barley, and proline and sucrose in rice. Then we have succeeded in enhancing salt-stress tolerance by hydrogen peroxide treatment in rice, which is known to be one of the most salt-sensitive crops. Furthermore we have found that hydrogen peroxide treatment induces a higher sugar content in tomato and melon fruits. Hydrogen peroxide was effective in accelerating germination of a turf grass (Kentucky bluegrass) under cool conditions. Thus we conclude that application of hydrogen peroxide can be a useful technique for agriculture. © 2006 Springer. All Rights Reserved.