西番莲属（西番莲科）亚属中的细胞器差异遗传

Differential organellar inheritance in Passiflora's (Passifloraceae) subgenera.

作者信息

Muschner Valéria C, Lorenz-Lemke Aline P, Vecchia Maurizio, Bonatto Sandro L, Salzano Francisco M, Freitas Loreta B

机构信息

Programa de Pós-Graduação em Genética e Biologia Molecular, Departamento de Genética, Instituto de Biociências, Universidade Federal do Rio Grande do Sul, Caixa, Postal 15053, 91501-970 Porto Alegre, RS, Brazil.

出版信息

Genetica. 2006 Sep-Nov;128(1-3):449-53. doi: 10.1007/s10709-006-7726-4.

DOI:10.1007/s10709-006-7726-4

PMID:17028972

Abstract

Four chloroplast (cp), one mitochondrial (mt), and one ribosomal nuclear (ITS) DNA regions were studied in four artificial and one natural interspecific Passiflora hybrids. The ITS results confirmed their hybrid origin and all mtDNAs were maternally inherited. The same, however, was not true for cpDNA. The four hybrids (three artificial and one natural) derived from species of the Passiflora subgenus showed a cpDNA paternal inheritance, while the one involving taxa of the Decaloba subgenus gave evidence of maternal transmission. These results are of significance for the ongoing studies which are being performed on the molecular evolution of this genus and furnish important background for investigations aimed at clarifying the factors which determine cpDNA inheritance.

摘要

在四个人工种间和一个天然种间西番莲杂交种中研究了四个叶绿体（cp）、一个线粒体（mt）和一个核糖体核（ITS）DNA区域。ITS结果证实了它们的杂交起源，并且所有线粒体DNA都是母系遗传的。然而，叶绿体DNA并非如此。来自西番莲亚属物种的四个杂交种（三个人工杂交种和一个天然杂交种）显示叶绿体DNA为父系遗传，而涉及十裂亚属分类群的那个杂交种则显示为母系遗传。这些结果对于正在进行的该属分子进化研究具有重要意义，并为旨在阐明决定叶绿体DNA遗传因素的研究提供了重要背景。