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Genome-Wide Association Mapping Identifies Novel Panicle Morphology Loci and Candidate Genes in Sorghum

Panicle morphology is an important trait in racial classification and can determine grain yield and other agronomic traits in sorghum. In this study, we performed association mapping of panicle length, panicle width, panicle compactness, and peduncle recurving in the sorghum mini core panel measured...

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Autores principales: Wang, Lihua, Upadhyaya, Hari D., Zheng, Jian, Liu, Yanlong, Singh, Shailesh Kumar, Gowda, C. L. L., Kumar, Rajendra, Zhu, Yongqun, Wang, Yi-Hong, Li, Jieqin
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8525895/
https://www.ncbi.nlm.nih.gov/pubmed/34675951
http://dx.doi.org/10.3389/fpls.2021.743838
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author Wang, Lihua
Upadhyaya, Hari D.
Zheng, Jian
Liu, Yanlong
Singh, Shailesh Kumar
Gowda, C. L. L.
Kumar, Rajendra
Zhu, Yongqun
Wang, Yi-Hong
Li, Jieqin
author_facet Wang, Lihua
Upadhyaya, Hari D.
Zheng, Jian
Liu, Yanlong
Singh, Shailesh Kumar
Gowda, C. L. L.
Kumar, Rajendra
Zhu, Yongqun
Wang, Yi-Hong
Li, Jieqin
author_sort Wang, Lihua
collection PubMed
description Panicle morphology is an important trait in racial classification and can determine grain yield and other agronomic traits in sorghum. In this study, we performed association mapping of panicle length, panicle width, panicle compactness, and peduncle recurving in the sorghum mini core panel measured in multiple environments with 6,094,317 single nucleotide polymorphism (SNP) markers. We mapped one locus each on chromosomes 7 and 9 to recurving peduncles and eight loci for panicle length, panicle width, and panicle compactness. Because panicle length was positively correlated with panicle width, all loci for panicle length and width were colocalized. Among the eight loci, two each were on chromosomes 1, 2, and 6, and one each on chromosomes 8 and 10. The two loci on chromosome 2, i.e., Pm 2-1 and Pm 2-2, were detected in 7 and 5 out of 11 testing environments, respectively. Pm 2-2 colocalized with panicle compactness. Candidate genes were identified from both loci. The rice Erect Panicle2 (EP2) ortholog was among the candidate genes in Pm 2-2. EP2 regulates panicle erectness and panicle length in rice and encodes a novel plant-specific protein with unknown functions. The results of this study may facilitate the molecular identification of panicle morphology-related genes and the enhancement of yield and adaptation in sorghum.
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spelling pubmed-85258952021-10-20 Genome-Wide Association Mapping Identifies Novel Panicle Morphology Loci and Candidate Genes in Sorghum Wang, Lihua Upadhyaya, Hari D. Zheng, Jian Liu, Yanlong Singh, Shailesh Kumar Gowda, C. L. L. Kumar, Rajendra Zhu, Yongqun Wang, Yi-Hong Li, Jieqin Front Plant Sci Plant Science Panicle morphology is an important trait in racial classification and can determine grain yield and other agronomic traits in sorghum. In this study, we performed association mapping of panicle length, panicle width, panicle compactness, and peduncle recurving in the sorghum mini core panel measured in multiple environments with 6,094,317 single nucleotide polymorphism (SNP) markers. We mapped one locus each on chromosomes 7 and 9 to recurving peduncles and eight loci for panicle length, panicle width, and panicle compactness. Because panicle length was positively correlated with panicle width, all loci for panicle length and width were colocalized. Among the eight loci, two each were on chromosomes 1, 2, and 6, and one each on chromosomes 8 and 10. The two loci on chromosome 2, i.e., Pm 2-1 and Pm 2-2, were detected in 7 and 5 out of 11 testing environments, respectively. Pm 2-2 colocalized with panicle compactness. Candidate genes were identified from both loci. The rice Erect Panicle2 (EP2) ortholog was among the candidate genes in Pm 2-2. EP2 regulates panicle erectness and panicle length in rice and encodes a novel plant-specific protein with unknown functions. The results of this study may facilitate the molecular identification of panicle morphology-related genes and the enhancement of yield and adaptation in sorghum. Frontiers Media S.A. 2021-10-05 /pmc/articles/PMC8525895/ /pubmed/34675951 http://dx.doi.org/10.3389/fpls.2021.743838 Text en Copyright © 2021 Wang, Upadhyaya, Zheng, Liu, Singh, Gowda, Kumar, Zhu, Wang and Li. https://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
Wang, Lihua
Upadhyaya, Hari D.
Zheng, Jian
Liu, Yanlong
Singh, Shailesh Kumar
Gowda, C. L. L.
Kumar, Rajendra
Zhu, Yongqun
Wang, Yi-Hong
Li, Jieqin
Genome-Wide Association Mapping Identifies Novel Panicle Morphology Loci and Candidate Genes in Sorghum
title Genome-Wide Association Mapping Identifies Novel Panicle Morphology Loci and Candidate Genes in Sorghum
title_full Genome-Wide Association Mapping Identifies Novel Panicle Morphology Loci and Candidate Genes in Sorghum
title_fullStr Genome-Wide Association Mapping Identifies Novel Panicle Morphology Loci and Candidate Genes in Sorghum
title_full_unstemmed Genome-Wide Association Mapping Identifies Novel Panicle Morphology Loci and Candidate Genes in Sorghum
title_short Genome-Wide Association Mapping Identifies Novel Panicle Morphology Loci and Candidate Genes in Sorghum
title_sort genome-wide association mapping identifies novel panicle morphology loci and candidate genes in sorghum
topic Plant Science
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8525895/
https://www.ncbi.nlm.nih.gov/pubmed/34675951
http://dx.doi.org/10.3389/fpls.2021.743838
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