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Article

Mapping of a Major QTL, qBK1Z, for Bakanae Disease Resistance in Rice

by
Sais-Beul Lee
1,
Namgyu Kim
2,
Sumin Jo
1,
Yeon-Jae Hur
1,
Ji-Youn Lee
1,
Jun-Hyeon Cho
1,
Jong-Hee Lee
1,
Ju-Won Kang
1,
You-Chun Song
1,
Maurene Bombay
3,
Sung-Ryul Kim
3,
Jungkwan Lee
4,
Young-Su Seo
2,
Jong-Min Ko
1 and
Dong-Soo Park
1,3,*
1
National Institute of Crop Science, Milyang 50424, Korea
2
Department of Microbiology, Pusan National University, Pusan 46241, Korea
3
International Rice Research Institute, Pili Drive, Los Baños 4031, Laguna, Philippines
4
College of Natural Resources and Life Science, Dong-A University, Pusan 49135, Korea
*
Author to whom correspondence should be addressed.
Plants 2021, 10(3), 434; https://doi.org/10.3390/plants10030434
Submission received: 31 January 2021 / Revised: 21 February 2021 / Accepted: 22 February 2021 / Published: 25 February 2021
(This article belongs to the Special Issue Genomics, Genetics, and Breeding for Rice Crop Improvement)
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Abstract

Bakanae disease is a fungal disease of rice (Oryza sativa L.) caused by the pathogen Gibberella fujikuroi (also known as Fusarium fujikuroi). This study was carried out to identify novel quantitative trait loci (QTLs) from an indica variety Zenith. We performed a QTL mapping using 180 F2:9 recombinant inbred lines (RILs) derived from a cross between the resistant variety, Zenith, and the susceptible variety, Ilpum. A primary QTL study using the genotypes and phenotypes of the RILs indicated that the locus qBK1z conferring bakanae disease resistance from the Zenith was located in a 2.8 Mb region bordered by the two RM (Rice Microsatellite) markers, RM1331 and RM3530 on chromosome 1. The log of odds (LOD) score of qBK1z was 13.43, accounting for 30.9% of the total phenotypic variation. A finer localization of qBK1z was delimited at an approximate 730 kb interval in the physical map between Chr01_1435908 (1.43 Mbp) and RM10116 (2.16 Mbp). Introducing qBK1z or pyramiding with other previously identified QTLs could provide effective genetic control of bakanae disease in rice.
Keywords: Oryza sativa L.; bakanae disease; Gibberella fujikuroi; QTL mapping—qBK1Z Oryza sativa L.; bakanae disease; Gibberella fujikuroi; QTL mapping—qBK1Z

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MDPI and ACS Style

Lee, S.-B.; Kim, N.; Jo, S.; Hur, Y.-J.; Lee, J.-Y.; Cho, J.-H.; Lee, J.-H.; Kang, J.-W.; Song, Y.-C.; Bombay, M.; et al. Mapping of a Major QTL, qBK1Z, for Bakanae Disease Resistance in Rice. Plants 2021, 10, 434. https://doi.org/10.3390/plants10030434

AMA Style

Lee S-B, Kim N, Jo S, Hur Y-J, Lee J-Y, Cho J-H, Lee J-H, Kang J-W, Song Y-C, Bombay M, et al. Mapping of a Major QTL, qBK1Z, for Bakanae Disease Resistance in Rice. Plants. 2021; 10(3):434. https://doi.org/10.3390/plants10030434

Chicago/Turabian Style

Lee, Sais-Beul, Namgyu Kim, Sumin Jo, Yeon-Jae Hur, Ji-Youn Lee, Jun-Hyeon Cho, Jong-Hee Lee, Ju-Won Kang, You-Chun Song, Maurene Bombay, and et al. 2021. "Mapping of a Major QTL, qBK1Z, for Bakanae Disease Resistance in Rice" Plants 10, no. 3: 434. https://doi.org/10.3390/plants10030434

APA Style

Lee, S.-B., Kim, N., Jo, S., Hur, Y.-J., Lee, J.-Y., Cho, J.-H., Lee, J.-H., Kang, J.-W., Song, Y.-C., Bombay, M., Kim, S.-R., Lee, J., Seo, Y.-S., Ko, J.-M., & Park, D.-S. (2021). Mapping of a Major QTL, qBK1Z, for Bakanae Disease Resistance in Rice. Plants, 10(3), 434. https://doi.org/10.3390/plants10030434

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