Isolation of an effective strain of Frankia from nodules of Discaria trinervis (Rhamnaceae)

被引:43
作者
Chaia, E [1 ]
机构
[1] Univ Nacl Comahue, Ctr Reg Univ Bariloche, RA-8400 Bariloche, Rio Negro, Argentina
关键词
actinorhiza; Discaria chacaye; Discaria trinervis; Frankia; host specificity;
D O I
10.1023/A:1004305313480
中图分类号
S3 [农学(农艺学)];
学科分类号
0901 ;
摘要
Frankia strain BCU110501 was isolated from root nodules of the native Patagonian actinorhizal plant Discaria trinervis. The strain was grown on BAP medium with sodium propionate or glucose as carbon sources. Colonies grown in nitrogen-free medium showed branched hyphae bearing polymorphic sporangia and vesicles, which were capable of nitrogen fixation. Old cultures produced a red pigment. The infectivity and effectivity of a Frankia strain isolated from Discaria on its own host, D. trinervis and also in D. chacaye, is reported for the first time. Frankia BCU110501 has physiological properties that are intermediate between categories proposed by Lechevalier et al. (1983) to classify Frankia.
引用
收藏
页码:99 / 102
页数:4
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