通过属间杂交,将不同基因背景的刺桐引入马卢斯。

IF 2.3 3区 生物学 Q3 BIOCHEMISTRY & MOLECULAR BIOLOGY
Takuya Morimoto, Ryuya Narazaki, Hiroaki Okabe, Lumin Zhang, Kazusa Nishimura, Akihiro Itai
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引用次数: 0

摘要

跨种和跨属的广泛杂交被用来提高作物的重要农业性状。在蔷薇科马缨丹属(Maleae)中,不同的属和种表现出多种特性,可通过杂交增加多样性和基因库。本研究旨在开发和鉴定马蔺和黄杨之间的属间杂交个体。通过种子萌发、嫩枝繁殖和离体生根,从由 Pyrus communis、P. bretschneideri 和 Pyrus 种间杂交种(P. communis × P. pyrifolia)授粉的 Malus × domestica 杂交品种中获得了适应性幼苗,这些幼苗显示出自身根系的无性生长。叶片形态学、流式细胞仪和分子基因分型的比较分析证实了这些个体的杂交地位。全基因组基因分型显示,所有杂交个体都对称地继承了马蔺和刺桐亲本的基因组片段。据我们所知,这是首次报道 Malus × domestica 和 P. bretschneideri 之间的属间杂种幼苗的发育情况。此外,该种间杂种个体还是将 P. pyrifolia 的遗传背景引入 Malus × domestica 的桥梁植物。这项研究的结果为通过 Malus 和 Pyrus 之间的种间杂交进行育种奠定了重要基础,促进了从不同基因库中吸收有价值的性状。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Introduction of a diverse genetic background of Pyrus into Malus through intergeneric hybridization.

Introduction of a diverse genetic background of Pyrus into Malus through intergeneric hybridization.

Wide hybridizations across species and genera have been employed to enhance agriculturally important traits in crops. Within the tribe Maleae of the Rosaceae family, different genera and species exhibit several traits useful for increasing diversity and gene pool through hybridization. This study aimed to develop and characterize intergeneric hybrid individuals between Malus and Pyrus. Through seed germination, shoot multiplication, and rooting in vitro, acclimatized seedlings showing vegetative growth on their own roots were obtained from crosses of Malus × domestica pollinated by Pyrus communis, P. bretschneideri, and the Pyrus interspecific hybrid (P. communis × P. pyrifolia). Comparative analysis of leaf morphology, flow cytometry, and molecular genotyping confirmed the hybrid status of the individuals. Genome-wide genotyping revealed that all the hybrid individuals inherited genomic fragments symmetrically from the Malus and Pyrus parents. To the best of our knowledge, this is the first report on the development of intergeneric hybrid seedlings between Malus × domestica and P. bretschneideri. Furthermore, the Pyrus interspecific hybrid individual served as a bridge plant for introducing the genetic background of P. pyrifolia into Malus × domestica. The results of this study provided a crucial foundation for breeding through intergeneric hybridization between Malus and Pyrus, facilitating the incorporation of valuable traits from diverse gene pools.

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来源期刊
Molecular Genetics and Genomics
Molecular Genetics and Genomics 生物-生化与分子生物学
CiteScore
5.10
自引率
3.20%
发文量
134
审稿时长
1 months
期刊介绍: Molecular Genetics and Genomics (MGG) publishes peer-reviewed articles covering all areas of genetics and genomics. Any approach to the study of genes and genomes is considered, be it experimental, theoretical or synthetic. MGG publishes research on all organisms that is of broad interest to those working in the fields of genetics, genomics, biology, medicine and biotechnology. The journal investigates a broad range of topics, including these from recent issues: mechanisms for extending longevity in a variety of organisms; screening of yeast metal homeostasis genes involved in mitochondrial functions; molecular mapping of cultivar-specific avirulence genes in the rice blast fungus and more.
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