Li Min, Chen Liting, Wang Qinqin, He Leiming, Duan Yun, Mao Xuewei, Zhou Lin
College of Plant Protection, Henan Agricultural University, No. 218, Ping'an Avenue, Zhengzhou 450046, China.
Henan Key Laboratory of Creation and Application of New Pesticide, Henan Agricultural University, Zhengzhou 450046, China.
J Fungi (Basel). 2025 Jun 6;11(6):433. doi: 10.3390/jof11060433.
Peanut Root Rot (PRR) is a devastating disease that significantly limits peanut production worldwide. Although PRR has been frequently reported in Henan Province of China, the predominant species and their sensitivity to different fungicides remain unclear. Between 2021 and 2023, we surveyed 81 peanut fields across 17 cities in Henan Province, China, to assess PRR prevalence and species distribution. A total of 1131 isolates were identified based on the morphological characters and phylogenetic analyses and classified into 11 recognized species: (56.06%), (20.87%), (13.62%), (4.69%), (1.33%), (1.15%), (1.06%), (0.35%), (0.35%), (0.26%), and (0.26%). Pathogenicity assessments showed that all 11 species were capable of causing PRR, with exhibiting the highest isolation frequency and widespread distribution in all areas. Furthermore, the four species (, , , and ) were highly sensitive to the six fungicides, including prochloraz (EC values of 0.02 ± 0.000.06 ± 0.01 mg/L), pydiflumetofen (EC values of 0.31 ± 0.070.67 ± 0.06 mg/L), tetramycin (EC values of 0.11 ± 0.020.58 ± 0.08 mg/L), tebuconazole (EC values of 0.26 ± 0.070.65 ± 0.10 mg/L), prothioconazole (EC values of 1.14 ± 0.163.15 ± 0.81 mg/L), and difenoconazole (EC values of 0.62 ± 0.123.58 ± 0.76 mg/L). This comprehensive study is the first systematic documentation on the prevalence, virulence, and fungicide sensitivity of PRR pathogens in Henan Province. The findings of the current study will provide a theoretical basis for the effective management of peanut root rot in Henan, China.
花生根腐病（PRR）是一种毁灭性病害，严重限制了全球花生的产量。尽管中国河南省频繁报道花生根腐病，但主要病原菌种类及其对不同杀菌剂的敏感性仍不清楚。在2021年至2023年期间，我们对中国河南省17个城市的81个花生田进行了调查，以评估花生根腐病的发病率和病原菌种类分布。基于形态特征和系统发育分析，共鉴定出1131个分离株，并分为11个公认的种类：（56.06%），（20.87%），（13.62%），（4.69%），（1.33%），（1.15%），（1.06%），（0.35%），（0.35%），（0.26%），和（0.26%）。致病性评估表明，所有11个种类都能够引起花生根腐病，其中分离频率最高且在所有地区广泛分布。此外，四种病原菌（，，，和）对六种杀菌剂高度敏感，包括咪鲜胺（EC值为0.02±0.000.06±0.01mg/L）、氟吡菌酰胺（EC值为0.31±0.070.67±0.06mg/L）、四霉素（EC值为0.11±0.020.58±0.08mg/L）、戊唑醇（EC值为0.26±0.070.65±0.10mg/L）、丙硫菌唑（EC值为1.14±0.163.15±0.81mg/L）和苯醚甲环唑（EC值为0.62±0.123.58±0.76mg/L）。这项综合研究是关于河南省花生根腐病病原菌的发病率、毒力和杀菌剂敏感性的首次系统记录。本研究结果将为中国河南省花生根腐病的有效防治提供理论依据。
