ENHANCEMENT OF CROWN-GALL TUMOR INITIATION BY EXTRACT FRACTIONS FROM TUMOR FORMING COTYLEDONS OF HELIANTHUS-GIGANTEUS L

被引:3
作者
BOUCKAERTURBAN, AM
VENDRIG, JC
机构
来源
ZEITSCHRIFT FUR PFLANZENPHYSIOLOGIE | 1982年 / 105卷 / 05期
关键词
D O I
10.1016/S0044-328X(82)80037-8
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
Tumor initiation in cotyledons of H. giganteus L. inoculated with Agrobacterium tumefaciens B6 was studied in vitro. The susceptibility of the cotyledons can be enhanced by exogenously applied active extract fractions derived from 6-day-old cotyledons. About the same results could be obtained with infections on the epi- and hypocotyl of Helianthus plants in vivo. The growth of the tumors was unaffected by these treatments. The susceptibility of the cotyledons for tumor initiation is clearly correlated with the endogenous content of the active compound(s). This active compound(s), present in the extract fractions, does not require the immediate presence of the bacteria to be physiologically active. Apparently, the active compound(s) did not affect the virulence of the bacteria.
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页码:395 / 405
页数:11
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