RIKEN Elucidates Inactivation Mechanism of Gibberellin, Plant Growth-promoting Hormone.Tokyo, Japan, Feb 1, 2006 - (JCN) - RIKEN RIKEN Rikagaku Kenkyusho (Institute of Physical and Chemical Research, Japan) announced on January 30 that its Plant Science Center has discovered an inactivation inactivation /in·ac·ti·va·tion/ (in-ak?ti-va´shun) the destruction of biological activity, as of a virus, by the action of heat or other agent. mechanism of gibberellin gib·ber·el·lin n. Any of several plant hormones, such as gibberellic acid, used to promote stem elongation. [From New Latin Gibberella (fujikoro , a kind of hormone that promotes plant growth, in collaboration with Shanghai Institutes for Biological Sciences (SIBS). The two organizations have conducted research using the eui (elongated e·lon·gate tr. & intr.v. e·lon·gat·ed, e·lon·gat·ing, e·lon·gates To make or grow longer. adj. or elongated 1. Made longer; extended. 2. Having more length than width; slender. uppermost internode in·ter·node n. 1. A section or part between two nodes. 2. An internodal segment. in ) mutant of rice, which has a longer internode than conventional rice. The joint research group has elucidated that cytochrome P450 oxidase, a protein expressed in eui genes, suppresses the activity of gibberellin. In addition, the group has confirmed that gibberellin is excessively accumulated in the eui mutant. RIKEN expects that these findings will contribute to the development of plant growth regulating technologies using growth-promoting hormones. Details of this discovery will be published in the February issue of US scientific magazine The Plant Cell. Copyright [c] 2006 Japan Corporate News Network. All rights reserved. |
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