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Article

QTL Analysis Revealed One Major Genetic Factor Inhibiting Lesion Elongation by Bacterial Blight (Xanthomonas oryzae pv. oryzae) from a japonica Cultivar Koshihikari in Rice

1
Graduate School of Agriculture Science Forestry and Fisheries, Kagoshima University, Kagoshima 890-0065, Japan
2
Faculty of Agriculture, Kagoshima University, Kagoshima 890-0065, Japan
3
The United Graduate School of Agriculture Sciences, Kagoshima University, Kagoshima 890-0065, Japan
4
Division of Gene Research, Kagoshima University, Kagoshima 890-0065, Japan
*
Author to whom correspondence should be addressed.
Academic Editors: Gianni Barcaccia, Ana Butrón and Adnane Boualem
Plants 2022, 11(7), 867; https://doi.org/10.3390/plants11070867
Received: 10 February 2022 / Revised: 15 March 2022 / Accepted: 22 March 2022 / Published: 24 March 2022
(This article belongs to the Special Issue Genetic Breeding and Germplasm Enhancement of Rice)
Xanthomonas oryzae pv. oryzae (Xoo) is a pathogen that has ravaged the rice industry as the causal agent of bacterial blight (BB) diseases in rice. Koshihikari (KO), an elite japonica cultivar, and ARC7013 (AR), an indica cultivar, are both susceptible to Xoo. Their phenotypic characteristics reveal that KO has shorter lesion length than that of AR. The F2 population from KO × AR results in continuous distribution of lesion length by inoculation of an Xoo race (T7147). Consequently, quantitative trait loci (QTL) mapping of the F2 population is conducted, covering 12 chromosomes with 107 simple sequence repeat (SSR) and insertion/deletion (InDel) genetic markers. Three QTLs are identified on chromosomes 2, 5, and 10. Of them, qXAR5 has the strongest resistance variance effect of 20.5%, whereas qXAR2 and qXAR10 have minor QTL effects on resistance variance, with 3.9% and 2.3%, respectively, for a total resistance variance of 26.7%. The QTLs we examine for this study differ from the loci of BB resistance genes from earlier studies. Our results can help to facilitate understanding of genetic and morphological fundamentals for use in rice breeding programs that are more durable against evolving Xoo pathogens and uncertain climatic temperature. View Full-Text
Keywords: pathogen; DNA marker; composite interval mapping (CIM); simple interval mapping (SIM); quantitative trait loci; horizontal resistance pathogen; DNA marker; composite interval mapping (CIM); simple interval mapping (SIM); quantitative trait loci; horizontal resistance
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MDPI and ACS Style

Shah, S.; Tsuneyoshi, H.; Ichitani, K.; Taura, S. QTL Analysis Revealed One Major Genetic Factor Inhibiting Lesion Elongation by Bacterial Blight (Xanthomonas oryzae pv. oryzae) from a japonica Cultivar Koshihikari in Rice. Plants 2022, 11, 867. https://doi.org/10.3390/plants11070867

AMA Style

Shah S, Tsuneyoshi H, Ichitani K, Taura S. QTL Analysis Revealed One Major Genetic Factor Inhibiting Lesion Elongation by Bacterial Blight (Xanthomonas oryzae pv. oryzae) from a japonica Cultivar Koshihikari in Rice. Plants. 2022; 11(7):867. https://doi.org/10.3390/plants11070867

Chicago/Turabian Style

Shah, Shameel, Hiroaki Tsuneyoshi, Katsuyuki Ichitani, and Satoru Taura. 2022. "QTL Analysis Revealed One Major Genetic Factor Inhibiting Lesion Elongation by Bacterial Blight (Xanthomonas oryzae pv. oryzae) from a japonica Cultivar Koshihikari in Rice" Plants 11, no. 7: 867. https://doi.org/10.3390/plants11070867

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