Chromosome structure of wild wheat relative Aegilops uniaristata (Triticeae).

IF 1.3 4区生物学 Q4 CELL BIOLOGY

Cytogenetic and Genome Research Pub Date : 2026-01-19 DOI:10.1159/000550462

Tatiana V Danilova, Bernd Friebe, Eduard Akhunov

引用次数: 0

Abstract

Introduction: Homoeologous chromosomes within the grass tribe Triticeae have largely retained their cross-species colinearity. However, prior studies suggest that the karyotype of Aegilops uniaristata, a diploid wild relative of wheat (genome NN, 2n=2x=14), is noticeably different from most of the Triticeae species.

Methods: We used fluorescence in situ hybridization with a large collection of probes hybridizing to repetitive and coding regions of the Triticeae genomes to perform comparative cytogenetic analysis and establish the macrostructure of Ae. uniaristata chromosomes.

Results: Compared to wheat, all chromosomes of Ae. uniaristata, with the exception of 5N, were found significantly rearranged due to multiple inter- and intrachromosomal translocations and inversions. Discussion/ Conclusion: The N genome structure revealed in our study is useful for understanding karyotype evolution and facilitating introgression from Ae. uniaristata and the N genome of polyploid Aegilops species for wheat improvement.

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野生小麦亲缘小麦的染色体结构。

禾本科部落小麦科的同源染色体在很大程度上保留了它们的跨种共线性。然而，先前的研究表明，小麦的二倍体野生近缘种Aegilops unaristata（基因组NN， 2n=2x=14）的核型与大多数小麦品种存在显著差异。方法：采用荧光原位杂交技术，将大量探针杂交到麦类小麦基因组的重复区和编码区，进行细胞遗传学比较分析，建立麦类小麦的宏观结构。uniaristata染色体。结果：与小麦相比，白纹伊蚊的所有染色体均呈阳性。除5N外，unaristata由于染色体间和染色体内的多次易位和倒位而被发现明显重排。讨论/结论：本研究揭示的N基因组结构有助于了解Ae的核型进化和促进其基因渐近。小麦多倍体羊蹄草的N基因组改良。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Cytogenetic and Genome Research 生物-细胞生物学

CiteScore

3.10

自引率

5.90%

发文量

审稿时长

1 months

期刊介绍： During the last decades, ''Cytogenetic and Genome Research'' has been the leading forum for original reports and reviews in human and animal cytogenetics, including molecular, clinical and comparative cytogenetics. In recent years, most of its papers have centered on genome research, including gene cloning and sequencing, gene mapping, gene regulation and expression, cancer genetics, comparative genetics, gene linkage and related areas. The journal also publishes key papers on chromosome aberrations in somatic, meiotic and malignant cells. Its scope has expanded to include studies on invertebrate and plant cytogenetics and genomics. Also featured are the vast majority of the reports of the International Workshops on Human Chromosome Mapping, the reports of international human and animal chromosome nomenclature committees, and proceedings of the American and European cytogenetic conferences and other events. In addition to regular issues, the journal has been publishing since 2002 a series of topical issues on a broad variety of themes from cytogenetic and genome research.