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烟草（Nicotiana tabacum L.）与黑莨（Hyoscyamus niger L.）体细胞杂种中的新型CMS相关表型。

New CMS-associated phenotypes in cybrids Nicotiana tabacum L. (+Hyoscyamus niger L.).

作者信息

Zubko Mikhajlo K, Zubko Elena I, Adler Klaus, Grimm Bernhard, Gleba Yuri Yu

机构信息

International Institute of Cell Biology, Zabolotnogo Str. 148, 252143 Kiev-143, Ukraine.

出版信息

Ann Bot. 2003 Aug;92(2):281-8. doi: 10.1093/aob/mcg135. Epub 2003 Jun 26.

DOI:10.1093/aob/mcg135
PMID:12829446
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC4243657/
Abstract

Morphological characteristics were studied in cytoplasmic male sterile (CMS) cybrids possessing the tobacco nuclear genome, Hyoscyamus niger plastome and recombinant mitochondria. After backcrosses with tobacco, new flower modifications were found, including: conversions of stamens into branched filamentous structures; alterations in the shape of petals and the corolla limb; and high degrees of reduction in most flower organs. Vegetative alterations (leaf elongation and stem branching) occurred in some cybrids. Results confirmed that a protoplast fusion-based alloplasmic cytoplasm transfer, followed by conventional backcrosses, is a useful tool for generating alternative CMS sources with novel nucleo-cytoplasmic compositions. These alterations in the genetic status were accompanied by modified floral and vegetative phenotypes.

摘要

对具有烟草核基因组、黑种草质体基因组和重组线粒体的细胞质雄性不育（CMS）体细胞杂种的形态特征进行了研究。与烟草回交后，发现了新的花形态变化，包括：雄蕊转化为分支丝状结构；花瓣和花冠边缘形状的改变；以及大多数花器官的高度退化。一些体细胞杂种出现了营养形态变化（叶片伸长和茎分支）。结果证实，基于原生质体融合的异质细胞质转移，随后进行常规回交，是产生具有新型核质组成的替代CMS来源的有用工具。这些遗传状态的改变伴随着花和营养表型的改变。

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