Symbiosis of Astragalus cicer with its microsymbionts:: partial nodC gene sequence, host plant specificity, and root nodule structure

被引：8

作者：

Wdowiak, S

Malek, W

Sajnaga, E

Lotocka, B

Stepkowski, T

Legocki, A

机构：

[1] Marie Curie Sklodowska Univ, Inst Microbiol & Biotechnol, Dept Gen Microbiol, PL-20033 Lublin, Poland

[2] Agr Univ Warsaw, Fac Agr, Dept Bot, PL-02528 Warsaw, Poland

[3] Polish Acad Sci, Inst Bioorgan Chem, PL-61704 Poznan, Poland

来源：

ANTONIE VAN LEEUWENHOEK INTERNATIONAL JOURNAL OF GENERAL AND MOLECULAR MICROBIOLOGY | 2000年 / 78卷 / 01期

关键词：

Astragalus cicer; nodC gene sequence; nodule structure; rhizobia;

D O I：

10.1023/A:1002738609114

中图分类号：

Q93 [微生物学];

学科分类号：

071005 ; 100705 ;

摘要：

Astragalus cicer (cicer milkvetch) nodule bacteria were investigated for host plant specificity and partial nodC gene sequences, whilst their native host was studied for the microscopic structure of root nodules. The strains under investigation formed nodules not only on the original host but also on Astragalus glycyphyllos, Astragalus sinicus, Lotus corniculatus, and Phaseolus vulgaris. The nodules induced on the cicer milkvetch were classified as indeterminate and characterized by apical, persistent meristem, a large bacteroid region with infected and uninfected cells, and elongated bacteroids singly located inside peribacteroid membranes. By comparison of the partial nodC gene sequences of a representative strain of astragali rhizobia to those contained in the GenBank database, a close symbiotic relationship of A. cicer microsymbionts to Rhizobium sp. (Oxytropis) was found.

引用

页码：63 / 71

页数：9