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| Sequencing of the 5’terminal region of Ls-rDNA from Pinus massoniana and the phylogeny of gymnosperm based on that |
| ZHANG Qun1, SHI Su-Hua2, QU Liang-Hu2, H.T. Chang2 |
| 1. College of Life Science and Technology, Jinan University, Guangzhou 510632, China; 2. Department of Biology, Zhongshan University, Guangzhou 510275, China |
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Abstract The 302-nucleotide sequences of the 5' terminal region of Ls-rDNA from Pinus massoniana lamb was determined. The phylogenetic tree based on the data of Ls-rDNA suggested that Pinus was more closely related to Taxodium and Gnetum than to other gymnosperms, the 3 genera constituted a monophyletic group, while Ginkgo and Cycas formed another monophyletic group within Gymnosperms, which might represent the two evolutionary procession of gymnosperms; The monophyly of both Gymnosperms and Angiosperms was supported. The potential of analysis of phylogeny of partial sequences of 5' terminal region of Ls-rDNA of higher level of taxon of seed plants was addressed.
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Received: 25 February 2003
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