【作者】 劉磊; 周廣麒; 李長(zhǎng)田; 金華;
【Author】 LIU Lei1,ZHOU Guang-qi1,LI Chang-tian2,JIN Hua3(1.Dalian Polytechnic University,Dalian Liaoning 116034;2.Jilin Agricultural University,Changchun Jilin 130118; 3.Dalian Nationalities University,Dalian Liaoning 116600)
【機(jī)構(gòu)】 大連工業(yè)大學(xué); 吉林農(nóng)業(yè)大學(xué)中藥材學(xué)院; 大連民族學(xué)院;
【摘要】 對(duì)吉林省延吉市和云南省昆明市松茸子實(shí)體的ITS序列進(jìn)行遺傳多樣性研究。提取兩個(gè)地區(qū)松茸子實(shí)體的基因組DNA,應(yīng)用特異引物對(duì)其ITS序列進(jìn)行PCR擴(kuò)增及測(cè)序,并對(duì)云南省昆明市松茸樣品進(jìn)行克隆及測(cè)序。之后從GenBank上獲取5個(gè)地區(qū)7條松茸ITS序列,并利用MEGA、BLAST、DNAMAN和ClustalX軟件進(jìn)行對(duì)比分析和構(gòu)建系統(tǒng)發(fā)育樹(shù)。對(duì)云南松茸樣品克隆發(fā)現(xiàn),ITS序列中有A與G、T與C的顛換,并插入1個(gè)堿基T。序列對(duì)比發(fā)現(xiàn),松茸ITS序列長(zhǎng)度在600 bp~604 bp范圍內(nèi),G+C含量在43.0%~44.2%之間,共有41個(gè)變異位點(diǎn),ITS2變異位點(diǎn)數(shù)要多于ITS1的變異位點(diǎn)數(shù)。同時(shí),多個(gè)位點(diǎn)存在著轉(zhuǎn)換、顛換、插入和缺失,表明不同產(chǎn)地松茸ITS序列在進(jìn)化過(guò)程中存在差異,為真菌分類(lèi)、鑒定等研究提供了重要的資料和依據(jù)。
【Abstract】 Genetic diversity of the genomic DNAs in the fruiting bodies of Tricholoma matstutake sampled by ITS in Yanji Jilin and Kunming Yunnan Province were studied.The genomic DNAs in the fruiting bodies of Tricholoma matstutake sampled from Yanji Jilin and Kunming Yunnan were extracted and the ITS sequence was amplified by PCR with its specific primer and sequenced respectively.Seven ITS sequences from 5 different regions were got from GeneBank and compared by MEGA、BLAST、DNAMAN and ClustalX programs w...
【關(guān)鍵詞】 松茸; 遺傳多樣性; ITS序列; 鑒定;
【Key words】 Tricholoma matstutake; Genetic diversity; ITS sequence; Identification;
【基金】 吉林省科技廳項(xiàng)目(21200253)
【分類(lèi)號(hào)】S646.9