Morphological, cytological, and molecular evidences for natural hybridization between Roegneria stricta and Roegneria turczaninovii (Triticeae: Poaceae).
Morphological, cytological, and molecular evidences for natural hybridization between Roegneria stricta and Roegneria turczaninovii (Triticeae: Poaceae).
复制标题
小麦科物种最近的自然杂交：来自形态学、细胞学和分子学的证据
DOI：
10.1002/ece3.8517
复制
发表时间：
2022-01
影响因子：
2.6
通讯作者：
Zhang H
中科院分区：
文献类型：
--
作者：
Chen C;Zheng Z;Wu D;Tan L;Yang C;Liu S;Lu J;Cheng Y;Sha L;Wang Y;Kang H;Fan X;Zhou Y;Zhang C;Zhang H
有些低育性植物在形态上介于窄叶Roegneria stricta和turczaninovii Roegneria之间，被怀疑是这两种植物之间的天然杂交种。本研究核型分析表明，自然杂种及其推定亲本均为四倍体（2n = 4x = 28）。天然杂交种的减数分裂配对比假定的亲本更为不规则。基因组原位杂交和荧光原位杂交的结果表明，天然杂交种含有与其假定亲本相同的基因组。利用核基因DNA减数分裂重组酶1 （DMC1）和叶绿体基因rps16对天然杂交种及其推定亲本进行杂交分析。形态学和细胞学分析结果表明，该植物是赤叶姜与赤叶姜的天然杂交品种。该研究首次证明了天然同倍体杂交群体的存在，对了解该属的物种进化具有重要意义。本研究还首次报道了turczaninovii的基因组公式组成为StY，证实了其目前的分类地位是正确的。我们从形态学、细胞学和分子水平对生长在附近的天然杂交种r.s stricta、r.t turczaninovii和其他小麦科品种进行了综合分析，为天然杂交种的起源提供了支持。首次证实了天然同倍体杂交种的存在。
Some plants with low fertility are morphologically intermediate between Roegneria stricta and Roegneria turczaninovii, and were suspected to be natural hybrids between these species. In this study, karyotype analysis showed that natural hybrids and their putative parents were tetraploids (2n = 4x = 28). Meiotic pairing in natural hybrids is more irregular than its putative parents. Results of genomic in situ hybridization and fluorescence in situ hybridization indicate that natural hybrids contain the same genome as their putative parents. The nuclear gene DNA meiotic recombinase 1 (DMC1) and the chloroplast gene rps16 of natural hybrids and their putative parents were analyzed for evidence of hybridization. The results from molecular data supported by morphology and cytology demonstrated that the plants represent natural hybrids between R. stricta and R. turczaninovii. The study is important for understanding species evolution in the genus since it demonstrates for the first time the existence of populations of natural homoploid hybrids in Roegneria. The study also reports for the first time that the composition of the genomic formula of R. turczaninovii is StY, confirming that the current taxonomic status is correct. Our comprehensive analyses of natural hybrids, R. stricta, R. turczaninovii and the other Triticeae species, growing nearby from morphology, cytology, and molecular levels, provided support for the origin of natural hybrids. It demonstrates for the first time the existence of populations of natural homoploid hybrids in Roegneria.
登录
查看更多内容
老虎燕尾蝴蝶中的性染色体镶嵌和混合物种形成。
影响因子：
4.5
作者：
Kunte K;Shea C;Aardema ML;Scriber JM;Juenger TE;Gilbert LE;Kronforst MR
通讯作者：
Kronforst MR
影响因子：
5.8
作者：
Posada, D;Crandall, KA
通讯作者：
Crandall, KA
影响因子：
--
作者：
Arnold ML;Martin NH
通讯作者：
Martin NH
影响因子：
3
作者：
RIESEBERG, LH
通讯作者：
RIESEBERG, LH
DOI：
10.1007/978-0-387-77489-3_1
发表时间：
2009-01-01
期刊：
GENETICS AND GENOMICS OF THE TRITICEAE
影响因子：
--
作者：
Barkworth, Mary E.;von Bothmer, Roland
通讯作者：
von Bothmer, Roland