由引起的圆斑病的感染特征和物理预防策略。

Infection Characteristics and Physical Prevention Strategy of Round Spot Disease Caused by .

机构信息

State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, Yunnan Agricultural University, Kunming, Yunnan 650201, China.

Key Laboratory of Agro-Biodiversity and Pest Management of Education Ministry of China, Yunnan Agricultural University, Kunming, Yunnan 650201, China.

出版信息

Plant Dis. 2022 Oct;106(10):2607-2617. doi: 10.1094/PDIS-01-22-0087-RE. Epub 2022 Sep 12.

DOI:10.1094/PDIS-01-22-0087-RE

PMID:35442048

Abstract

round spot disease (PRSD), caused by , is the main leaf disease occurring in cultured . Aiming to find a safe and efficient control method for PRSD, we studied the disease characteristics of PRSD and the optimal growth conditions of and evaluated the efficacy of rain-shelter cultivation in PRSD control. Moreover, we described based on morphological characterization and molecular analyses (ITS, , , and ). The optimum temperature for conidial germination was found to be 14 to 22°C. Furthermore, leaf surface wetness for at least 4 h is required for conidial germination, and conidia can successfully infect when the leaf wetness lasts for more than 8 h. Additionally, rainwater splashing determines the conidial transfection distance, which is less than 2 m. Finally, our study revealed that rain-shelter cultivation is an effective and simple physical prevention strategy to control PRSD, with an average efficacy of up to 100%.

摘要

圆斑病（PRSD），由引起，是中发生的主要叶病。为了找到 PRSD 的安全有效的控制方法，我们研究了 PRSD 的疾病特征和的最佳生长条件，并评估了雨棚栽培在 PRSD 控制中的效果。此外，我们根据形态特征和分子分析（ITS、、、）描述了。发现分生孢子萌发的最佳温度为 14 至 22°C。此外，至少 4 h 的叶面湿度是分生孢子萌发所必需的，并且当叶湿持续超过 8 h 时，分生孢子可以成功感染。此外，雨水飞溅决定了分生孢子转染的距离，小于 2 m。最后，我们的研究表明，雨棚栽培是一种有效且简单的物理预防策略，可以控制 PRSD，平均效果高达 100%。