Statistical analysis on adaptive evolution of SQUA genes in angiosperms

作     者：CHEN Yongyan 1,2, ZHONG Yang 3*, TIAN Bo 1, YANG Ji 4 and LI Dezhu 1*(1. Laboratory of Plant Biodiversity and Biogeography, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650204, China 2. College of Bioengineering, Dalian University, Dalian 116622, China 3. Ministry of Education Key Laboratory for Biodiversity and Ecological Engineering, School of Life Science, Fudan University, Shanghai 200433, China 4. College of Life Sciences, Peking University, Beijing 100871, China) 

作者机构：Laboratory of Plant Biodiversity and Biogeography，Kunming Institute of Botany，Chinese Academy of Sciences，Kunming 650204China College of Bioengineering，Dalian University，Dalian 116622，China Ministry of Education Key Laboratory for Biodiversity and Ecological Engineering，School of Life Science，Fudan University，Shanghai 200433，China Laboratory of Plant Biodiversity and Biogeography，Kunming Institute of Botany，Chinese Academy of Sciences，Kunming 650204China College of Life Sciences，Peking University，Beijing 100871，China 

出 版 物：《Progress in Natural Science:Materials International》 (自然科学进展·国际材料(英文))

年 卷 期：2005年第1期

页      面：94-97页

学科分类：0710[理学-生物学] 07[理学] 09[农学] 071007[理学-遗传学] 0901[农学-作物学] 090102[农学-作物遗传育种] 

基　　金：theNationalNaturalScienceFoundationofChina(GrantNo .3 0 2 0 0 0 15 )  TheMajorStateBasicResearchDevelopmentProgramofChina (GrantNo .2 0 0 3CB715 90 4)andNaturalScienceFoundationofYunnanProvince (GrantNo .2 0 0 2C0 0 5 6M ) 

主　　题：angiosperms Dendrocalamus latiflorus SQUA gene relative rate test likelihood rate test adaptive evolution. 

摘      要：SQUAMOSA (SQUA) subfamily includes important perianth identity genes of MADS-box gene family. SQUA genes of Dendrocalamus latiflorus were sequenced, and phylogenetic form on SQUA genes in angiosperms was analyzed. Relative rate and adaptive evolution after SQUA gene duplication in recent common ancestor of monocots and eudicots were analyzed using the methods of relative rate test, statistic on synonymous and non-synonymous coden substitution sites and likelihood rate test. The results show that both of relative rate and synonymous and non-synonymous coden substitution in eudicot clade are significantly higher than those in monocot clade, and the value of d N/d S uncovered possible positive selective pressure in eudicot clade.