CAJ | 학술논문

应用叶绿体DNA trnL内含子序列分析檀香目科间的系统发育关系.取样研究的檀香目个体的trnL内含子序列长度在科间呈现较大差异(从291 bp到587 bp).最大简约性分析产生的严格一致树与以前已发表的基于其它基因的檀香目的分子系统学研究结果大体一致.香芙木属(铁青树科)是最早分支出的类群;桑寄生科、槲寄生科分别表现为单系类群,檀香科为并系;桑寄生科和槲寄生科并不具密切亲缘关系,槲寄生科从檀香科内衍生出来.本研究表明,具相对高的核苷酸替换率的叶绿体DNA trnL内含子序列可为高等级类群系统发育关系的研究提供更多的信息位点.
응용협록체DNA trnL내함자서렬분석단향목과간적계통발육관계.취양연구적단향목개체적trnL내함자서렬장도재과간정현교대차이(종291 bp도587 bp).최대간약성분석산생적엄격일치수여이전이발표적기우기타기인적단향목적분자계통학연구결과대체일치.향부목속(철청수과)시최조분지출적류군;상기생과、곡기생과분별표현위단계류군,단향과위병계;상기생과화곡기생과병불구밀절친연관계,곡기생과종단향과내연생출래.본연구표명,구상대고적핵감산체환솔적협록체DNA trnL내함자서렬가위고등급류군계통발육관계적연구제공경다적신식위점.
Interfamilial relationships of Santalales were investigated using chloroplast intron sequences. The lengths oftrnL intron regions present considerable variation among the sampled Santalalean families, varying from291 to 587 bp. The topology of strict consensus tree generated from parsimony analysis is largely congruent with trees previously published based on DNA sequences of other genes, which revealed the basal position of Schoepfia(Olacaceae), the nonophyly of Loranthaceae and Viscaceae, and the paraphyly of Santalaceae. Loranthaceae are distinct from Viscaceae, the latter is derived from within Santalaceae. Our study also demonstrates the utility of the rapidly evolved chloroplast trnL intron for addressing relationships among the component taxa of Santalales.