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J Integr Plant Biol, 1999, 41 (12): -, Research Article
Identification of Rice Signal Factor Inhibiting the Growth and Transfer of Agrobacterium tumefaciens
XU Dong-Hui, XU Shi-Bo, LI Bao-Jian, LIU Yu, HUANG Zhi-Shu and GU Lian-Quan
doi:
Abstract
A rice signal factors which could inhibit the growth of Agrobacterium tumefaciens (Smith et Townsend) Conn and absorption on the surface of rice cells was for the first time isolated from rice ( Oryza sativa L. cv. IR72) roots. This is a new natural thiourea compound, i.e. ethyl-4-(O-nitrophenyl)-3-thioallophanate. Most of the thiourea compounds are synthesis. One of the reasons which rice is not sensitive to A. tumefaciens gene transfer is that rice contains the signal factor which can inhibit the growth of A. tumefaciens as well as its gene transfer to the surface of rice cells.
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