The genetic architecture of temperature-induced partial fertility restoration in A1 cytoplasm in sorghum (Sorghum bicolor (L.) Moench)
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| Title: | The genetic architecture of temperature-induced partial fertility restoration in A |
|---|---|
| Authors: | Jordan, D. R.1 (AUTHOR) David.Jordan@uq.edu.au, Klein, R. R.2 (AUTHOR), Melonek, J.3 (AUTHOR), Small, I.3 (AUTHOR), Cruickshank, A.4 (AUTHOR), Bradburn, L.5 (AUTHOR), Malory, S.1 (AUTHOR), Tao, Y.1,6 (AUTHOR), Hathorn, A.7 (AUTHOR), Hunt, C. H.4 (AUTHOR), Amenu, L. T.1 (AUTHOR), Mace, E. S.1,4 (AUTHOR) |
| Source: | Theoretical & Applied Genetics. Jul2025, Vol. 138 Issue 7, p1-12. 12p. |
| Abstract: | Key message: High-temperature-induced partial fertility in CMS sorghum is controlled by multiple genes that are distinct from genes involved in fertility restoration, contributing to reduced diversity in elite females. Cytoplasmic male sterility (CMS) is used for commercial production of hybrid seed in sorghum. CMS-based hybrid breeding systems require female parental lines (CMS lines) to remain male sterile to prevent self-pollination and enable cross-pollination to generate hybrid seed. However, genetic and environmental factors can lead to the loss of male sterility in the pollen-accepting female parent, resulting in the production of contaminating non-hybrid seeds through self-fertilization with large economic consequences. It is known that high temperatures around flowering time induce sterility breakdown, or partial fertility; however, the genetic control of this phenomenon is poorly understood. To investigate the molecular processes controlling sterility breakdown, a large association mapping population of elite CMS parental lines was used to map the genomic regions controlling partial fertility. In this study, we used genome-wide association studies on a panel of 2049 sorghum lines grown in six field trials at Emerald Queensland representing six different environments. The seed planting was set up in such a way that flowering corresponded with the hottest part of the year. In total 43 significant SNPs were identified, indicating that the trait is controlled by multiple genes; however, previously identified major genes for fertility restoration were not the main cause of partial fertility. Diversity and linkage disequilibrium decay patterns in separate elite male and CMS pools also indicated the constraints on genetic diversity within the female parents due to partial fertility, rather than the frequency of the previously identified major fertility restoration genes. The understanding of the control of sterility breakdown provides new avenues for trait introgression in elite female pools. [ABSTRACT FROM AUTHOR] |
| Copyright of Theoretical & Applied Genetics is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
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| Header | DbId: egs DbLabel: Engineering Source An: 186350909 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: The genetic architecture of temperature-induced partial fertility restoration in A<subscript>1</subscript> cytoplasm in sorghum (Sorghum bicolor (L.) Moench) – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Jordan%2C+D%2E+R%2E%22">Jordan, D. R.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> David.Jordan@uq.edu.au</i><br /><searchLink fieldCode="AR" term="%22Klein%2C+R%2E+R%2E%22">Klein, R. R.</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Melonek%2C+J%2E%22">Melonek, J.</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Small%2C+I%2E%22">Small, I.</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Cruickshank%2C+A%2E%22">Cruickshank, A.</searchLink><relatesTo>4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Bradburn%2C+L%2E%22">Bradburn, L.</searchLink><relatesTo>5</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Malory%2C+S%2E%22">Malory, S.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Tao%2C+Y%2E%22">Tao, Y.</searchLink><relatesTo>1,6</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Hathorn%2C+A%2E%22">Hathorn, A.</searchLink><relatesTo>7</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Hunt%2C+C%2E+H%2E%22">Hunt, C. H.</searchLink><relatesTo>4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Amenu%2C+L%2E+T%2E%22">Amenu, L. T.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Mace%2C+E%2E+S%2E%22">Mace, E. S.</searchLink><relatesTo>1,4</relatesTo> (AUTHOR) – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Theoretical+%26+Applied+Genetics%22">Theoretical & Applied Genetics</searchLink>. Jul2025, Vol. 138 Issue 7, p1-12. 12p. – Name: Abstract Label: Abstract Group: Ab Data: Key message: High-temperature-induced partial fertility in CMS sorghum is controlled by multiple genes that are distinct from genes involved in fertility restoration, contributing to reduced diversity in elite females. Cytoplasmic male sterility (CMS) is used for commercial production of hybrid seed in sorghum. CMS-based hybrid breeding systems require female parental lines (CMS lines) to remain male sterile to prevent self-pollination and enable cross-pollination to generate hybrid seed. However, genetic and environmental factors can lead to the loss of male sterility in the pollen-accepting female parent, resulting in the production of contaminating non-hybrid seeds through self-fertilization with large economic consequences. It is known that high temperatures around flowering time induce sterility breakdown, or partial fertility; however, the genetic control of this phenomenon is poorly understood. To investigate the molecular processes controlling sterility breakdown, a large association mapping population of elite CMS parental lines was used to map the genomic regions controlling partial fertility. In this study, we used genome-wide association studies on a panel of 2049 sorghum lines grown in six field trials at Emerald Queensland representing six different environments. The seed planting was set up in such a way that flowering corresponded with the hottest part of the year. In total 43 significant SNPs were identified, indicating that the trait is controlled by multiple genes; however, previously identified major genes for fertility restoration were not the main cause of partial fertility. Diversity and linkage disequilibrium decay patterns in separate elite male and CMS pools also indicated the constraints on genetic diversity within the female parents due to partial fertility, rather than the frequency of the previously identified major fertility restoration genes. The understanding of the control of sterility breakdown provides new avenues for trait introgression in elite female pools. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Theoretical & Applied Genetics is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1007/s00122-025-04946-4 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 12 StartPage: 1 Titles: – TitleFull: The genetic architecture of temperature-induced partial fertility restoration in A1 cytoplasm in sorghum (Sorghum bicolor (L.) Moench) Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Jordan, D. R. – PersonEntity: Name: NameFull: Klein, R. R. – PersonEntity: Name: NameFull: Melonek, J. – PersonEntity: Name: NameFull: Small, I. – PersonEntity: Name: NameFull: Cruickshank, A. – PersonEntity: Name: NameFull: Bradburn, L. – PersonEntity: Name: NameFull: Malory, S. – PersonEntity: Name: NameFull: Tao, Y. – PersonEntity: Name: NameFull: Hathorn, A. – PersonEntity: Name: NameFull: Hunt, C. H. – PersonEntity: Name: NameFull: Amenu, L. T. – PersonEntity: Name: NameFull: Mace, E. S. IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 07 Text: Jul2025 Type: published Y: 2025 Identifiers: – Type: issn-print Value: 00405752 Numbering: – Type: volume Value: 138 – Type: issue Value: 7 Titles: – TitleFull: Theoretical & Applied Genetics Type: main |
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