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Influence of Gender Bias on Distribution of Hybrid Sterility in Rice
Hybrid sterility genes define species identities, setting reproductive barriers between distantly related Oryza relatives. They induce allelic-specific selective gametic abnormalities by killing pollens, embryo sacs, or both, and thus resulting in the male specific transmission ratio distortion (mTR...
Autores principales: | , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Frontiers Media S.A.
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9319209/ https://www.ncbi.nlm.nih.gov/pubmed/35903237 http://dx.doi.org/10.3389/fpls.2022.898206 |
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author | Zin Mar Myint, Koide, Yohei |
author_facet | Zin Mar Myint, Koide, Yohei |
author_sort | Zin Mar Myint, |
collection | PubMed |
description | Hybrid sterility genes define species identities, setting reproductive barriers between distantly related Oryza relatives. They induce allelic-specific selective gametic abnormalities by killing pollens, embryo sacs, or both, and thus resulting in the male specific transmission ratio distortion (mTRD), female specific transmission ratio distortion (f TRD), and/or sex-independent transmission ratio distortion (siTRD) in hybrids. Although more than 50 hybrid sterility genes have been reported, comprehensive analysis on the distributional pattern of TRD systems in Oryza species is limited. In this review, we surveyed the TRD systems and the underlying possible mechanisms in these species. In rice, pollen killers which cause mTRD are often observed in higher frequency than egg killers and gamete eliminators, which are factors affecting f TRD and siTRD, respectively. Due to the rather massive population of pollen grains, their reduction in the number caused by hybrid sterility possesses a smaller selective disadvantage to the hybrid individuals, in contrast to female gamete abortion. The pattern of TRD distribution displays less abundancy in siTRD. It suggests that fixation of siTRD might require a certain time rather than single sex-specific factors. The presence of linked sterility factors worked for mTRD and f TRD, and strength of their linkage in chromosomal regions might determine the type of sterility and TRD. The study of TRD systems has a potential to reveal the relationships between selfish genes and their functions for reproductive isolation. |
format | Online Article Text |
id | pubmed-9319209 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | Frontiers Media S.A. |
record_format | MEDLINE/PubMed |
spelling | pubmed-93192092022-07-27 Influence of Gender Bias on Distribution of Hybrid Sterility in Rice Zin Mar Myint, Koide, Yohei Front Plant Sci Plant Science Hybrid sterility genes define species identities, setting reproductive barriers between distantly related Oryza relatives. They induce allelic-specific selective gametic abnormalities by killing pollens, embryo sacs, or both, and thus resulting in the male specific transmission ratio distortion (mTRD), female specific transmission ratio distortion (f TRD), and/or sex-independent transmission ratio distortion (siTRD) in hybrids. Although more than 50 hybrid sterility genes have been reported, comprehensive analysis on the distributional pattern of TRD systems in Oryza species is limited. In this review, we surveyed the TRD systems and the underlying possible mechanisms in these species. In rice, pollen killers which cause mTRD are often observed in higher frequency than egg killers and gamete eliminators, which are factors affecting f TRD and siTRD, respectively. Due to the rather massive population of pollen grains, their reduction in the number caused by hybrid sterility possesses a smaller selective disadvantage to the hybrid individuals, in contrast to female gamete abortion. The pattern of TRD distribution displays less abundancy in siTRD. It suggests that fixation of siTRD might require a certain time rather than single sex-specific factors. The presence of linked sterility factors worked for mTRD and f TRD, and strength of their linkage in chromosomal regions might determine the type of sterility and TRD. The study of TRD systems has a potential to reveal the relationships between selfish genes and their functions for reproductive isolation. Frontiers Media S.A. 2022-07-12 /pmc/articles/PMC9319209/ /pubmed/35903237 http://dx.doi.org/10.3389/fpls.2022.898206 Text en Copyright © 2022 Zin Mar Myint and Koide. 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 Zin Mar Myint, Koide, Yohei Influence of Gender Bias on Distribution of Hybrid Sterility in Rice |
title | Influence of Gender Bias on Distribution of Hybrid Sterility in Rice |
title_full | Influence of Gender Bias on Distribution of Hybrid Sterility in Rice |
title_fullStr | Influence of Gender Bias on Distribution of Hybrid Sterility in Rice |
title_full_unstemmed | Influence of Gender Bias on Distribution of Hybrid Sterility in Rice |
title_short | Influence of Gender Bias on Distribution of Hybrid Sterility in Rice |
title_sort | influence of gender bias on distribution of hybrid sterility in rice |
topic | Plant Science |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9319209/ https://www.ncbi.nlm.nih.gov/pubmed/35903237 http://dx.doi.org/10.3389/fpls.2022.898206 |
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