title: [The genetic diversity and homology of Anabaena azollae and its host plant (Azolla) based on rapd analysis].
abstract: Symbiotic Anabeana azollae and its host plant Anabeana-free Azolla were isolated from 16 Azolla accessions representing different Azolla species or geographic origins.DNA polymorphic fragments were obtained by simultaneous RAPD amplification of both symbiont and host. The UPGMA clusters of Anabeana azollae and its host Azolla were established separately based on Dice coefficient caculation and a coordinated relationship was shown between Anabeana azollae and its Azolla host along both individual genetic divergence,but this genetic homology was reduced among different strains within Azolla species while the obvious mutants of Anabeana azollae were detected in some Azolla tested strains collected from different geographic area in the same host species.
authors.affiliation: Azolla Research Center, Fujian Academy of Agricultural Sciences[FAAS], Fuzhou 350013, China. Chenjian3@hotmail.com
authors.forename: Jian
authors.initials: J
authors.lastname: Chen
authors.forename: Wei-wen
authors.initials: WW
authors.lastname: Zheng
authors.forename: Guo-zhong
authors.initials: GZ
authors.lastname: Xu
authors.forename: Tie-ying
authors.initials: TY
authors.lastname: Song
authors.forename: Long-fei
authors.initials: LF
authors.lastname: Tang