Molecular mapping of qBK1Z, a major QTL for bakanae disease resistance in rice
Open Access
- 18 May 2020
- preprint content
- Published by Cold Spring Harbor Laboratory
Abstract
Bakanae disease is a fungal disease of rice ( Oryza sativa L.) caused by the pathogen Gibberella fujikuroi (also known as Fusarium fujikuroi ). Recently the disease incidence has increased in several Asian countries and continues to spread throughout the world. No rice varieties have been developed yet to be completely resistant to this disease. With increasing need to identify various genetic resources to impart resistance to local elite varieties, this study was carried out to identify novel quantitative trait loci (QTLs) from an indica variety Zenith. We performed a QTL mapping using 180 F 2:9 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 qBK1 z conferring bakanae disease resistance from the Zenith was located in a 2.8 Mb region bordered by the two SSR markers, RM1331 and RM3530 on chromosome 1. The log of odds (LOD) score of qBK1 z was 13.43, accounting for 30.9% of the total phenotypic variation. A finer localization of qBK1 z was delimited at an approximate 730 kb interval in the physical map between Chr01_1435908 (1.43 Mbp) and RM10116 (2.16 Mbp). The development of a rice variety with a higher level of resistance against bakanae disease is a major challenge in many rice growing countries. Introducing qBK1 z or pyramiding with other previously identified QTLs could provide effective genetic control of bakanae disease in rice.Keywords
This publication has 24 references indexed in Scilit:
- Development of In Vitro Seedling Screening Method for Selection of Resistant Rice Against Bakanae DiseaseResearch in Plant Disease, 2011
- Fungicide Resistance of Gibberella fujikuroi Isolates Causing Rice Bakanae Disease and Their Progeny IsolatesThe Korean Journal of Mycology, 2010
- Fusarium spp. associated with rice Bakanae: ecology, genetic diversity, pathogenicity and toxigenicityEnvironmental Microbiology, 2010
- Control of Bakanae Disease of Rice by Seed Soaking into the Mixed Solution of Procholraz and FludioxnilResearch in Plant Disease, 2009
- Introduction of bacterial blight resistance into Triguna, a high yielding, mid‐early duration rice varietyBiotechnology Journal, 2009
- Binam a Rice Cultivar, Resistant for Root Rot Disease on Rice Caused by Fusarium moniliforme in Northwest, IranInternational Journal of Botany, 2008
- Infection patterns in barley and wheat spikes inoculated with wild-type and trichodiene synthase gene disrupted Fusarium graminearumProceedings of the National Academy of Sciences of the United States of America, 2005
- Pyramiding three bacterial blight resistance genes (xa5, xa13 and Xa21) using marker-assisted selection into indica rice cultivar PR106Theoretical and Applied Genetics, 2001
- Seed disinfection using hot water immersion to control several seed-borne diseases of rice plants.Japanese Journal of Phytopathology, 2001
- MAPMAKER: An interactive computer package for constructing primary genetic linkage maps of experimental and natural populationsGenomics, 1987