DIBOA in wild Poaceae:: Sources of resistance to the Russian wheat aphid (Diuraphis noxia) and the greenbug (Schizaphis graminum)

被引:24
作者
Gianoli, E [1 ]
Niemeyer, HM [1 ]
机构
[1] Univ Chile, Fac Ciencias, Dept Ciencias Ecol, Santiago, Chile
关键词
aphids; cereal breeding; DIBOA; Diuraphis noxia; hydroxamic acids; pest resistance; Poaceae; Schizaphis graminum;
D O I
10.1023/A:1018323121213
中图分类号
S3 [农学(农艺学)];
学科分类号
0901 ;
摘要
Hydroxamic acids are secondary metabolites typical of Poaceae that play a role in cereal resistance against pests and pathogens. The content of the hydroxamic acid aglucones DIBOA (2,4-dihydroxy-1,4-benzoxazin-3-one) and DIMBOA (2,4-dihydroxy-7-methoxy-1,4-benzoxazin-3-one) was evaluated in wild Poaceae belonging to the tribes Triticeae (genera Hordeum and Elymus) and Aveneae (genera Deschampsia and Phalaris). The concentration of DIBOA in seedling extracts of the wild barleys Hordeum chilense, H.. brevisubulatum subsp. violaceum and H. bulbosum was negatively correlated with parameters related to performance of the cereal aphids Schizaphis graminum and Diuraphis noxia. The relevance of the results obtained for breeding programs aimed at increasing cereal resistance against aphids is discussed.
引用
收藏
页码:317 / 321
页数:5
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