Analysis of Chromosome Associations during Early Meiosis in Wheat Lines Carrying Chromosome Introgressions from <i>Agropyron cristatum</i>

Crested wheatgrass (<i>Agropyron cristatum</i> L. Gaertn., genome P), included in the Triticeae tribe (family Poaceae), is one of the most important grasses in temperate regions. It has been valued as a donor of important agronomic traits for wheat improvement, including tolerance to col...

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Autores principales:	Pilar Prieto, Carmen Palomino, Zuny Cifuentes, Adoración Cabrera
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	<i>Agropyron cristatum</i> wheat chromosome pairing <i>Ph1</i> introgression Botany QK1-989
Acceso en línea:	https://doaj.org/article/6f7da226c687452da9c27d030baee103
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spelling	oai:doaj.org-article:6f7da226c687452da9c27d030baee1032021-11-25T18:44:53ZAnalysis of Chromosome Associations during Early Meiosis in Wheat Lines Carrying Chromosome Introgressions from <i>Agropyron cristatum</i>10.3390/plants101122922223-7747https://doaj.org/article/6f7da226c687452da9c27d030baee1032021-10-01T00:00:00Zhttps://www.mdpi.com/2223-7747/10/11/2292https://doaj.org/toc/2223-7747Crested wheatgrass (<i>Agropyron cristatum</i> L. Gaertn., genome P), included in the Triticeae tribe (family Poaceae), is one of the most important grasses in temperate regions. It has been valued as a donor of important agronomic traits for wheat improvement, including tolerance to cold, drought, and high salinity, as well as resistance to leaf rust, stripe rust, and powdery mildew. For successful incorporation of beneficial alleles into wheat, it is essential that recombination between wheat and <i>A. cristatum</i> chromosomes occurs. In this work, we analysed chromosome associations during meiosis in wheat lines carrying chromosome introgressions from <i>A. cristatum</i> chromosomes 5P and 6P in the presence and absence of <i>Ph1</i> locus using fluorescence <i>in situ</i> hybridisation. The results showed that the <i>Ph1</i> locus does not affect chromosome associations between <i>A. cristatum</i> and wheat chromosomes because there were no interspecific chromosome associations; therefore, no recombination between chromosomes from wheat and <i>Agropyron</i> were observed in the absence of the <i>Ph1</i> locus. The 5P and 6P <i>A. cristatum</i> chromosomes do not have a suppressor effect on the <i>Ph1</i> locus. Wheat univalents in metaphase I suggest that <i>Agropyron</i> chromosomes might carry genes having a role in wheat homologous chromosome associations. Putative effect of the <i>Agropyron</i> genes on wheat chromosome associations does not interact with the <i>Ph1</i> locus.Pilar PrietoCarmen PalominoZuny CifuentesAdoración CabreraMDPI AGarticle<i>Agropyron cristatum</i>wheatchromosome pairing<i>Ph1</i>introgressionBotanyQK1-989ENPlants, Vol 10, Iss 2292, p 2292 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	<i>Agropyron cristatum</i> wheat chromosome pairing <i>Ph1</i> introgression Botany QK1-989
spellingShingle	<i>Agropyron cristatum</i> wheat chromosome pairing <i>Ph1</i> introgression Botany QK1-989 Pilar Prieto Carmen Palomino Zuny Cifuentes Adoración Cabrera Analysis of Chromosome Associations during Early Meiosis in Wheat Lines Carrying Chromosome Introgressions from <i>Agropyron cristatum</i>
description	Crested wheatgrass (<i>Agropyron cristatum</i> L. Gaertn., genome P), included in the Triticeae tribe (family Poaceae), is one of the most important grasses in temperate regions. It has been valued as a donor of important agronomic traits for wheat improvement, including tolerance to cold, drought, and high salinity, as well as resistance to leaf rust, stripe rust, and powdery mildew. For successful incorporation of beneficial alleles into wheat, it is essential that recombination between wheat and <i>A. cristatum</i> chromosomes occurs. In this work, we analysed chromosome associations during meiosis in wheat lines carrying chromosome introgressions from <i>A. cristatum</i> chromosomes 5P and 6P in the presence and absence of <i>Ph1</i> locus using fluorescence <i>in situ</i> hybridisation. The results showed that the <i>Ph1</i> locus does not affect chromosome associations between <i>A. cristatum</i> and wheat chromosomes because there were no interspecific chromosome associations; therefore, no recombination between chromosomes from wheat and <i>Agropyron</i> were observed in the absence of the <i>Ph1</i> locus. The 5P and 6P <i>A. cristatum</i> chromosomes do not have a suppressor effect on the <i>Ph1</i> locus. Wheat univalents in metaphase I suggest that <i>Agropyron</i> chromosomes might carry genes having a role in wheat homologous chromosome associations. Putative effect of the <i>Agropyron</i> genes on wheat chromosome associations does not interact with the <i>Ph1</i> locus.
format	article
author	Pilar Prieto Carmen Palomino Zuny Cifuentes Adoración Cabrera
author_facet	Pilar Prieto Carmen Palomino Zuny Cifuentes Adoración Cabrera
author_sort	Pilar Prieto
title	Analysis of Chromosome Associations during Early Meiosis in Wheat Lines Carrying Chromosome Introgressions from <i>Agropyron cristatum</i>
title_short	Analysis of Chromosome Associations during Early Meiosis in Wheat Lines Carrying Chromosome Introgressions from <i>Agropyron cristatum</i>
title_full	Analysis of Chromosome Associations during Early Meiosis in Wheat Lines Carrying Chromosome Introgressions from <i>Agropyron cristatum</i>
title_fullStr	Analysis of Chromosome Associations during Early Meiosis in Wheat Lines Carrying Chromosome Introgressions from <i>Agropyron cristatum</i>
title_full_unstemmed	Analysis of Chromosome Associations during Early Meiosis in Wheat Lines Carrying Chromosome Introgressions from <i>Agropyron cristatum</i>
title_sort	analysis of chromosome associations during early meiosis in wheat lines carrying chromosome introgressions from <i>agropyron cristatum</i>
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/6f7da226c687452da9c27d030baee103
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Analysis of Chromosome Associations during Early Meiosis in Wheat Lines Carrying Chromosome Introgressions from <i>Agropyron cristatum</i>

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