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Chromosome Stability of Synthetic-Natural Wheat Hybrids

Primary allopolyploids are not only ideal materials to study species evolution, but also important bridges in incorporating genetic diversity of wild species into crops. Primary allopolyploids typically exhibit chromosome instability that a disadvantage trait in crop breeding. Newly synthesized hexa...

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Autores principales: Zhao, Laibin, Xie, Die, Fan, Chaolan, Zhang, Shujie, Huang, Lei, Ning, Shunzong, Jiang, Bo, Zhang, Lianquan, Yuan, Zhongwei, Liu, Dengcai, Hao, Ming
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8010257/
https://www.ncbi.nlm.nih.gov/pubmed/33815455
http://dx.doi.org/10.3389/fpls.2021.654382
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author Zhao, Laibin
Xie, Die
Fan, Chaolan
Zhang, Shujie
Huang, Lei
Ning, Shunzong
Jiang, Bo
Zhang, Lianquan
Yuan, Zhongwei
Liu, Dengcai
Hao, Ming
author_facet Zhao, Laibin
Xie, Die
Fan, Chaolan
Zhang, Shujie
Huang, Lei
Ning, Shunzong
Jiang, Bo
Zhang, Lianquan
Yuan, Zhongwei
Liu, Dengcai
Hao, Ming
author_sort Zhao, Laibin
collection PubMed
description Primary allopolyploids are not only ideal materials to study species evolution, but also important bridges in incorporating genetic diversity of wild species into crops. Primary allopolyploids typically exhibit chromosome instability that a disadvantage trait in crop breeding. Newly synthesized hexaploid wheat has been widely used in wheat genetics and breeding studies. To better understand the cytological and genetic basis of chromosome instability, this study investigated the chromosomes of a large number of seeds derived from the synthetic wheat SHW-L1 and its hybrids with natural wheat. SHW-L1 exhibited persistent chromosome instability since we observed a high frequent chromosome variation de novo generated from euploid SHW-L1 plants at the 14th generation of selfing (F(14)). High frequent chromosome variations were also observed in the F(2) hybrids and most of the analyzed recombinant inbred lines (RILs) at F(14), derived from the cross of SHW-L1 with common wheat variety Chuanmai 32. Chromosome instability was associated with frequent univalency during meiotic metaphase I. The experiment on reciprocal crosses between SHW-L1 and Chuanmai 32 indicated that cytoplasm has not obvious effects on chromosome instability. An analysis on 48 F(14) RILs revealed chromosome variation frequency was not associated with the Ph1 alleles from either SHW-L1 or Chuanmai 32, rejecting the hypothesis that chromosome instability was due to the Ph1 role of synthetic wheat. In the analyzed RILs, chromosome instability influences the phenotype uniformity, showing as obvious trait differences among plants within a RIL. However, the analyzed commercial varieties only containing ∼12.5% genomic components of synthetic wheat were chromosomally stable, indicating that chromosome instability caused by synthetic wheat can be effectively overcome by increasing the genetic background of common wheat.
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spelling pubmed-80102572021-04-01 Chromosome Stability of Synthetic-Natural Wheat Hybrids Zhao, Laibin Xie, Die Fan, Chaolan Zhang, Shujie Huang, Lei Ning, Shunzong Jiang, Bo Zhang, Lianquan Yuan, Zhongwei Liu, Dengcai Hao, Ming Front Plant Sci Plant Science Primary allopolyploids are not only ideal materials to study species evolution, but also important bridges in incorporating genetic diversity of wild species into crops. Primary allopolyploids typically exhibit chromosome instability that a disadvantage trait in crop breeding. Newly synthesized hexaploid wheat has been widely used in wheat genetics and breeding studies. To better understand the cytological and genetic basis of chromosome instability, this study investigated the chromosomes of a large number of seeds derived from the synthetic wheat SHW-L1 and its hybrids with natural wheat. SHW-L1 exhibited persistent chromosome instability since we observed a high frequent chromosome variation de novo generated from euploid SHW-L1 plants at the 14th generation of selfing (F(14)). High frequent chromosome variations were also observed in the F(2) hybrids and most of the analyzed recombinant inbred lines (RILs) at F(14), derived from the cross of SHW-L1 with common wheat variety Chuanmai 32. Chromosome instability was associated with frequent univalency during meiotic metaphase I. The experiment on reciprocal crosses between SHW-L1 and Chuanmai 32 indicated that cytoplasm has not obvious effects on chromosome instability. An analysis on 48 F(14) RILs revealed chromosome variation frequency was not associated with the Ph1 alleles from either SHW-L1 or Chuanmai 32, rejecting the hypothesis that chromosome instability was due to the Ph1 role of synthetic wheat. In the analyzed RILs, chromosome instability influences the phenotype uniformity, showing as obvious trait differences among plants within a RIL. However, the analyzed commercial varieties only containing ∼12.5% genomic components of synthetic wheat were chromosomally stable, indicating that chromosome instability caused by synthetic wheat can be effectively overcome by increasing the genetic background of common wheat. Frontiers Media S.A. 2021-03-17 /pmc/articles/PMC8010257/ /pubmed/33815455 http://dx.doi.org/10.3389/fpls.2021.654382 Text en Copyright © 2021 Zhao, Xie, Fan, Zhang, Huang, Ning, Jiang, Zhang, Yuan, Liu and Hao. http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Plant Science
Zhao, Laibin
Xie, Die
Fan, Chaolan
Zhang, Shujie
Huang, Lei
Ning, Shunzong
Jiang, Bo
Zhang, Lianquan
Yuan, Zhongwei
Liu, Dengcai
Hao, Ming
Chromosome Stability of Synthetic-Natural Wheat Hybrids
title Chromosome Stability of Synthetic-Natural Wheat Hybrids
title_full Chromosome Stability of Synthetic-Natural Wheat Hybrids
title_fullStr Chromosome Stability of Synthetic-Natural Wheat Hybrids
title_full_unstemmed Chromosome Stability of Synthetic-Natural Wheat Hybrids
title_short Chromosome Stability of Synthetic-Natural Wheat Hybrids
title_sort chromosome stability of synthetic-natural wheat hybrids
topic Plant Science
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8010257/
https://www.ncbi.nlm.nih.gov/pubmed/33815455
http://dx.doi.org/10.3389/fpls.2021.654382
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