The broad-spectrum rice blast resistance (R) gene Pita2 encodes a novel R protein unique from Pita.

ABSTRACT:

Background

Rice blast is generally considered the most devastating rice disease worldwide. The development of resistant varieties has been proven to be the most economical strategy to control the disease. A cluster of resistant (R) genes on rice chromosome 12 including Pita, Pita2 and Ptr has been studies for decades. However, the relationship between these R genes has not been well established.

Results

In this study, we compared the resistance spectra controlled by Pita2 and Pita by testing their monogenic lines (MLs) in four hotspots found in the Philippines and Burundi from 2014 to 2018. The reaction patterns were distinct in two countries and that Pita2-mediated field resistance was relatively prevalent. Pathogenicity tests using 328 single-spore isolates in greenhouse f

SUBMITTER: Meng X 

PROVIDER: S-EPMC7070119 | biostudies-literature | 2020 Mar

REPOSITORIES: biostudies-literature