Heo Su Vin, Park Hye Rang, Jang Yun Woo, Park Jihee, Kang Beom Kyu, Seo Jeong Hyun, Kim Jun Hoi, Lee Ji Yoon, Choi Man Soo, Ko Jee Yeon, Kim Choon Song, Lee Sungwoo, Jun Tae-Hwan
Department of Southern Area Crop Science, National Institute of Crop Science, Rural Development Administration, Miryang 50424, Korea.
Department of Crop Science, Chungnam National University, Daejeon 34134, Korea.
Plant Pathol J. 2024 Jun;40(3):329-335. doi: 10.5423/PPJ.NT.12.2023.0181. Epub 2024 Jun 1.
Phytophthora root and stem rot (PRR), caused by Phytophthora sojae, can occur at any growth stage under poorly drained and humid conditions. The expansion of soybean cultivation in South Korean paddy fields has increased the frequency of PRR outbreaks. This study aimed to identify four P. sojae isolates newly collected from domestic fields and evaluate race-specific resistance using the hypocotyl inoculation technique. The four isolates exhibited various pathotypes, with GJ3053 exhibiting the highest virulence complexity. Two isolates, GJ3053 and AD3617, were screened from 205 soybeans, and 182 and 190 genotypes (88.8 and 92.7%, respectively) were susceptible to each isolate. Among these accessions, five genotypes resistant to both isolates were selected. These promising genotypes are candidates for the development of resistant soybean cultivars that can effectively control PRR through gene stacking.
由大豆疫霉引起的疫霉根腐病（PRR），在排水不良和潮湿的条件下，可在任何生长阶段发生。韩国稻田大豆种植面积的扩大增加了PRR爆发的频率。本研究旨在鉴定从国内田间新采集的4株大豆疫霉菌株，并采用下胚轴接种技术评估小种特异性抗性。这4株菌株表现出不同的致病型，其中GJ3053的毒力复杂性最高。从205份大豆材料中筛选出2株菌株GJ3053和AD3617，分别有182和190个基因型（分别占88.8%和92.7%）对各菌株敏感。在这些种质中，选择了5个对两种菌株均具有抗性的基因型。这些有前景的基因型是通过基因叠加有效控制PRR的抗性大豆品种培育的候选材料。
