Investigation on Genetic Diversity in Subgenus <I
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University of Kentucky UKnowledge XXI International Grassland Congress / VIII International Grassland Congress Proceedings International Rangeland Congress Investigation on Genetic Diversity in Subgenus Eospalax of Myospalax Genus Using Cytochrome B Gene Sequences of Gansu Province Hongshan Yang Chinese Academy of Agricultural Sciences, China Xiaoqin He Gansu Forestry Planning & Designing Academy, China Genzhu Chang Chinese Academy of Agricultural Sciences, China Follow this and additional works at: https://uknowledge.uky.edu/igc Part of the Plant Sciences Commons, and the Soil Science Commons This document is available at https://uknowledge.uky.edu/igc/21/13-2/8 The XXI International Grassland Congress / VIII International Rangeland Congress took place in Hohhot, China from June 29 through July 5, 2008. Proceedings edited by Organizing Committee of 2008 IGC/IRC Conference Published by Guangdong People's Publishing House This Event is brought to you for free and open access by the Plant and Soil Sciences at UKnowledge. It has been accepted for inclusion in International Grassland Congress Proceedings by an authorized administrator of UKnowledge. For more information, please contact [email protected]. Multifunctional Grasslands in a Changing World Volume Ⅱ 瞯 5 07 瞯 ] Investigation on genetic diversity in subgenus Eospalax of Myospalax genus using cytochrome b gene sequences of Gansu province Hong‐shan Y ang 1 ,X iao‐qin He 2 ,Gen‐z hu Chang 1 1 L anz hou Institute o f A nimal & Veterinary Pharmaceutics Sciences , Chinese A cademy o f A gricultural Sciences , L anz hou730050 . 2 Gansu Forestry Planning & Desigtning A cademy ,L anz hou 730020 E‐mail :yanghsh123@ 126 .com Key words Eosp alax : subgenus , Cytochrome b gene , genetic diversity , conversion and transversion , phylogenetic Introduction 21 Eosp alax o f M yospalax 11 Complete sequences of cytochrome b gene were generated for species of subgenus in different places of Gansu province , other sequences were acquired from GenBank . Five Gansu species include Qin ling zokor Eospalax ruf escens M . cansu 摧 M .baileyi 摧 M . rothschildi ( 摧 M . sm) i,tGhiansu zokor ( ) , Bailey s zokor ( 4) 3, Roth‐schild s zokor ( ) , and Smith s zokor ( .The phylogenetic tree was constructed from the near complete cytb sequences . The result ) Eospalax illustrated the origin and evolution of subgenus from molecular level firstly in Gansu province . Materials and methods Eosp alax Twen1ty one liver samples were collected from five subgenera of in our experiment from eleven places HinaGgealnbseurgproavnidnceC.le(gg) To1t9a9l 1genomi2c DNA was extracted from the liver samples , treat7ed u5s‐ing a procedure modified‐ from ‐3′ 6 5‐ ( ) . ( ) PCR and Sequenc‐e3′Analysis : primer A L : ACCAATGACATGAA AAATCATCGT T ,H : TCTCCAT T TCTGGT T TACA AGAC for complete mitochondrial cyt b gene . Results 1 ( ) Sequence Analysis : Tw5enty one complete sequences of cytb on the other for species of zo1k1o4r3s were obtained , the alignment of cytb sequences is nucleotides long , nucleotide ins4e3rtion and deletion was not found .3N86ine groups of the sequences were fou、nd、 mo、re than polymorphic sites . The content of A G C31T 2i%s this the highest co3n0ce8n%tration of T b2a5se8p%airs ( . ) , followed by A 1( 2 4.% ) , C third ( . ) , the lowest con、tent、 of、G ( . ) .There are different content of A G C T in the third codon position , co1n9te2n%ts in 3th0e 7th%ird posit2io4n 3c%hange4a4t 2th%e rate of41T 4( % . 44to5% . ) , C0( 8% . 3to6% . ) , A ( . to . ) and G ( . 1 to 2. ) , significantly higher than that position and . Eighty percent conversion and transversion occurred in the thir‐d cod‐on position . Levels of homoplasy measured for C T ,T C substitutions are the highest in the thi2rd position , and the lowest in the first position . ( ) Phylogenetic 4R3econs‐truction :A phylogenetic tree c5onstructed from the near complete cytb sequences of five species in the Eosp alax 1 subgenus is shown in Figure . According to the three indices ( geographical position , heredity and evolution , difference of species) , suggests that different zokors and areas form different short branches , which one branch may include different species . Conclusions 1 the Grassland zokor and Northeast zokor ( ) M yospalax are the old ancient species in the genus ,the Chinese zokor is in th2e second and the others are in one evolution branch . ( There are two big evolution ) Eospalax Figure 1 The most p arsimonious tree o f Comp lete cyt b gene branch摧es in the Subgenus of Gan su , one is sequence data o f mtD NA . Bailey s zokor bran摧ch and the other is the big branch that consists 3of Smith s zoko摧r , Gansu zokor and Qin lin摧g zokor .( ) In the Bailey s zokor branch , the Bailey s zokor distributed in the Hexi Corridor deserted zone first diverged from the others . Grasslands/Rangelands Production Systems——— Domestication of Native Grasslands/Rangelands Plants for Regional Use.