<i>OsBRKq1</i>, Related Grain Size Mapping, and Identification of Grain Shape Based on QTL Mapping in Rice
The world population is growing rapidly, and food shortage remains a critical issue. Quantitative trait locus (QTL) mapping is a statistical analytical method that uses both phenotypic and genotypic data. The purpose of QTL mapping is to determine the exact gene location for various complex traits....
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MDPI AG
2021-02-01
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| Series: | International Journal of Molecular Sciences |
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| Online Access: | https://www.mdpi.com/1422-0067/22/5/2289 |
| _version_ | 1797395270139379712 |
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| author | Jae-Ryoung Park Dany Resolus Kyung-Min Kim |
| author_facet | Jae-Ryoung Park Dany Resolus Kyung-Min Kim |
| author_sort | Jae-Ryoung Park |
| collection | DOAJ |
| description | The world population is growing rapidly, and food shortage remains a critical issue. Quantitative trait locus (QTL) mapping is a statistical analytical method that uses both phenotypic and genotypic data. The purpose of QTL mapping is to determine the exact gene location for various complex traits. Increasing grain weight is a way to increase yield in rice. Genes related to grain size were mapped using the Samgang/Nagdong double haploid (SNDH) populations. Grain sizes were diversely distributed in SNDH 113 populations, and <i>OsBRKq1</i> was detected on chromosome 1 in an analysis of QTL mapping that used 1000 grain weight, grain length, and grain width. <i>OsBRKq1</i> exhibited high sequence similarity with the brassinosteroid leucine-rich repeat-receptor kinases of <i>Arabidopsis thaliana</i> and <i>Zea mays</i>. It was also predicted to have a similar function because of its high homology. <i>OsBRKq1</i> interacts with various grain-size control genes. Among the SNDH populations, the analysis of the relative expression level during the panicle formation stage of <i>OsBRKq1</i> in panicles of SNDH117, which has the largest grain size, and SNDH6, which has the smallest grain size, the relative expression level was significantly increased in SNDH117 panicles. SNDH populations have been advancing generations for 10 years; various genetic traits have been fixed and are currently being used as bridging parents. Therefore, the stable expression level of <i>OsBRKq1</i> was confirmed via QTL mapping. In the future, <i>OsBRKq1</i> can be effectively used to increase the yield of rice and solve food problems by increasing the size of seeds. |
| first_indexed | 2024-03-09T00:33:00Z |
| format | Article |
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| issn | 1661-6596 1422-0067 |
| language | English |
| last_indexed | 2024-03-09T00:33:00Z |
| publishDate | 2021-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | International Journal of Molecular Sciences |
| spelling | doaj.art-ed0c851a511e458ba20afe61f13980cf2023-12-11T18:26:24ZengMDPI AGInternational Journal of Molecular Sciences1661-65961422-00672021-02-01225228910.3390/ijms22052289<i>OsBRKq1</i>, Related Grain Size Mapping, and Identification of Grain Shape Based on QTL Mapping in RiceJae-Ryoung Park0Dany Resolus1Kyung-Min Kim2Division of Plant Biosciences, School of Applied Biosciences, College of Agriculture and Life Science, Kyungpook National University, Daegu 41566, KoreaDepartment of Crop Production, Faculté d’Agronomie et de Médecine Vétérinaire (FAMV), Université d’Etat D’Haiti (UEH), National Road number 1, Damien, Port-au-Prince 1441, HaitiDivision of Plant Biosciences, School of Applied Biosciences, College of Agriculture and Life Science, Kyungpook National University, Daegu 41566, KoreaThe world population is growing rapidly, and food shortage remains a critical issue. Quantitative trait locus (QTL) mapping is a statistical analytical method that uses both phenotypic and genotypic data. The purpose of QTL mapping is to determine the exact gene location for various complex traits. Increasing grain weight is a way to increase yield in rice. Genes related to grain size were mapped using the Samgang/Nagdong double haploid (SNDH) populations. Grain sizes were diversely distributed in SNDH 113 populations, and <i>OsBRKq1</i> was detected on chromosome 1 in an analysis of QTL mapping that used 1000 grain weight, grain length, and grain width. <i>OsBRKq1</i> exhibited high sequence similarity with the brassinosteroid leucine-rich repeat-receptor kinases of <i>Arabidopsis thaliana</i> and <i>Zea mays</i>. It was also predicted to have a similar function because of its high homology. <i>OsBRKq1</i> interacts with various grain-size control genes. Among the SNDH populations, the analysis of the relative expression level during the panicle formation stage of <i>OsBRKq1</i> in panicles of SNDH117, which has the largest grain size, and SNDH6, which has the smallest grain size, the relative expression level was significantly increased in SNDH117 panicles. SNDH populations have been advancing generations for 10 years; various genetic traits have been fixed and are currently being used as bridging parents. Therefore, the stable expression level of <i>OsBRKq1</i> was confirmed via QTL mapping. In the future, <i>OsBRKq1</i> can be effectively used to increase the yield of rice and solve food problems by increasing the size of seeds.https://www.mdpi.com/1422-0067/22/5/2289riceQTLfood shortageyieldgrain size<i>OsBRKq1</i> |
| spellingShingle | Jae-Ryoung Park Dany Resolus Kyung-Min Kim <i>OsBRKq1</i>, Related Grain Size Mapping, and Identification of Grain Shape Based on QTL Mapping in Rice International Journal of Molecular Sciences rice QTL food shortage yield grain size <i>OsBRKq1</i> |
| title | <i>OsBRKq1</i>, Related Grain Size Mapping, and Identification of Grain Shape Based on QTL Mapping in Rice |
| title_full | <i>OsBRKq1</i>, Related Grain Size Mapping, and Identification of Grain Shape Based on QTL Mapping in Rice |
| title_fullStr | <i>OsBRKq1</i>, Related Grain Size Mapping, and Identification of Grain Shape Based on QTL Mapping in Rice |
| title_full_unstemmed | <i>OsBRKq1</i>, Related Grain Size Mapping, and Identification of Grain Shape Based on QTL Mapping in Rice |
| title_short | <i>OsBRKq1</i>, Related Grain Size Mapping, and Identification of Grain Shape Based on QTL Mapping in Rice |
| title_sort | i osbrkq1 i related grain size mapping and identification of grain shape based on qtl mapping in rice |
| topic | rice QTL food shortage yield grain size <i>OsBRKq1</i> |
| url | https://www.mdpi.com/1422-0067/22/5/2289 |
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