摘要
本文报告了对25株来自不同寄主植物的海南快生型根瘤菌及7株已知快生型根瘤菌的数值分类。结果表明,海南快生型根瘤菌在分类上有多样性,其中一部分属于不同的已知根瘤菌种,有13株海南快生型根瘤菌构成一个具有独立分类地位的菌群。这一独立的海南根瘤菌群来自10个属的寄主植物,并有较强的生活能力和扰逆性。
A total of 25 fast-growing rhizobium isolates from variety of legumiuous plants in Hainan Province, a tropical region of China, and 7 representative strains of genera Rhizobium, Sinorhizobium and Agrobacterium were characterized by numerical taxonomy. The results indicated that rhizobium isolates from Hainan were taxonomically heterogenous. At thesimilarity level of 70%, 13 strains from Hainan formed a distinct group which could use wider range of carbon and nitrogen sources, and were more resistent to antibiotics and chemicals than known rhizobium species. 2 strains could not fall into any group, and the others fell into different known species respectively. There were no correlations between hosts and the taxonomic positions of their symbionts. The rhizobium isolates from the same host genus or speceis could fall into different groups.
出处
《微生物学通报》
CAS
CSCD
北大核心
1993年第2期67-73,共7页
Microbiology China
基金
国家自然科学基金
关键词
根瘤菌
多型性
数值分类
Diversity
Rhizobia
Tropical
Region
Numerical taxonomy