Nysius Dallas, 1852属（半翅目、异翅目、姬蜂科）的核型多样性远比您想象的要多得多

IF 1 4区生物学 Q4 GENETICS & HEREDITY Comparative Cytogenetics Pub Date : 2023-12-18 DOI:10.3897/compcytogen.17.116628

Natalia V. Golub, Boris A. Anokhin, Valentina G. Kuznetsova

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引用次数: 0

摘要

我们研究了 Nysius graminicola（Kolenati，1845 年）的核型和 18S rDNA 在核极组织区（NORs）的染色体分布。研究表明，该物种的核型为 2n = 22(18+mm+XY)，而之前研究的 Nysius Dallas, 1852 属的 24 个物种中只有一个物种具有类似的核型，即 2n = 14(12+mm+XY)。在 N. graminicola 中，18S 基因座位于性染色体上，这是该属以前未知的特征。我们的研究结果与之前的数据相比较，发现了 Nysius 中 rDNA 分布的动态演化。结论是，通过 FISH 检测到的分子染色体标记有助于更好地了解分类学上复杂的 Nysius 属的结构和进化。

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Karyotype diversity in the genus Nysius Dallas, 1852 (Hemiptera, Heteroptera, Lygaeidae) is much greater than you might think

We studied the karyotype and chromosomal distribution of 18S rDNA clustered in nucleolar organizer regions (NORs) in Nysius graminicola (Kolenati, 1845), belonging to the subfamily Orsillinae (Lygaeidae). It is shown that this species has a karyotype with 2n = 22(18+mm+XY), previously known in only one of 24 studied species of the genus Nysius Dallas, 1852, characterized by a similar karyotype, 2n = 14(12+mm+XY). In N. graminicola, 18S loci are located on sex chromosomes, which is a previously unknown trait for this genus. Our results in a compilation with previous data revealed dynamic evolution of rDNA distribution in Nysius. It is concluded that molecular chromosomal markers detected by FISH contribute to a better understanding of the structure and evolution of the taxonomically complex genus Nysius.

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来源期刊

Comparative Cytogenetics 生物-遗传学

CiteScore

2.40

自引率

0.00%

发文量

审稿时长

>12 weeks

期刊介绍： Comparative Cytogenetics is a peer-reviewed, open-access, rapid online journal launched to accelerate research on all aspects of plant and animal cytogenetics, karyosystematics, and molecular systematics. All published papers can be freely copied, downloaded, printed and distributed at no charge for the reader. Authors are thus encouraged to post the pdf files of published papers on their homepages or elsewhere to expedite distribution. There is no charge for color.