Vol.89, No.1, 2020, pp.45-55, doi:10.32604/phyton.2020.08548
OPEN ACCESS
RESEARCH ARTICLE
Analysis of the Relationship between Blast Resistance Genes and Disease Resistance of Rice Germplasm via Functional Molecular Markers
  • Ning Xuan1, Hua Zhang1, Xu Liu1, Qiang Guo1, Jian Liu2, Fangyin Yao1,*
1 Biotechnology Research Center, Shandong Academy of Agricultural Sciences, Jinan, 250100, China
2 College of Life Science, Shandong Normal University, Jinan, 250100, China
* Corresponding Author: Fangyin Yao. Email: yaofy@163.com
Received 06 September 2019; Accepted 12 October 2019; Issue published 01 March 2020
Abstract
Rice blast disease is one of the most devastating diseases of rice (Oryza sativa L.) caused by the fungus Magnaporthe oryzae (M. oryzae), and neck blast is the most destructive phase of this illness. The underlying molecular mechanisms of rice blast resistance are not well known. Thus, we collected 150 rice varieties from different ecotypes in China and assessed the rice blast resistances under the natural conditions that favoured disease development in Jining, Shandong Province, China in 2017. Results showed that 92 (61.3%) and 58 (38.7%) rice varieties were resistant and susceptible to M. oryzae, respectively. Among the 150 rice varieties screened for the presence of 13 major blast resistance (R) genes against M. oryzae by using functional markers, 147 contained one to eight R genes. The relationship between R genes and disease response was discussed by analysing the phenotype and genotype of functional markers. The results showed that the rice blast resistance gene Pita was significantly correlated with rice blast resistance. Our results provided a basis for the further understanding of the distribution of 13 major R genes of rice blast in the germplasm resources of the tested rice varieties, and were meaningful for rice disease resistance breeding.
Keywords
Magnaporthe oryzae; rice germplasm; rice blast resistance; functional marker
Cite This Article
Xuan, N., Zhang, H., Liu, X., Guo, Q., Liu, J., et al. (2020). Analysis of the Relationship between Blast Resistance Genes and Disease Resistance of Rice Germplasm via Functional Molecular Markers. Phyton-International Journal of Experimental Botany, 89(1), 45–55.