一种用于防治稗草（(L.) Beauv.）的潜在生物除草剂制剂。

: A Potential Bioherbicide Agent for Control of Barnyardgrass ( (L.) Beauv.).

作者信息

Gu Qiongnan, Chu Shihai, Huang Qichao, Chen Anan, Li Lin, Li Ruhai

机构信息

Key Laboratory of Integrated Pest Management on Crops in Central China, Ministry of Agriculture and Rural Affairs/Hubei Key Laboratory of Crop Disease, Insect Pests and Weeds Control/Institute of Plant Protection and Soil Fertilizer, Hubei Academy of Agricultural Sciences, Wuhan 430064, China.

出版信息

Plants (Basel). 2023 Jan 17;12(3):421. doi: 10.3390/plants12030421.

DOI:10.3390/plants12030421

PMID:36771505

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9919787/

Abstract

Barnyardgrass ( (L.) Beauv.) is one of the most troublesome weeds in transplanted and direct-seeded rice worldwide. To develop a strategy for the biocontrol of barnyardgrass, fungal isolates were recovered from barnyardgrass plants that exhibited signs of necrosis and wilt. An isolate B-48 with a high level of pathogenicity to barnyardgrass was identified after pathogenicity tests. From cultural and DNA sequence data, this strain was identified as . The inoculation of the barnyardgrass plant with caused a significant reduction in fresh weight. The isolate B-48 was highly pathogenic to barnyardgrass at the three- to four-leaf stages. When inoculated at a concentration of 1 × 10 spores/mL, barnyardgrass could achieve a reduction in fresh weight of more than 50%. This strain was safe for rice and most plant species. The results of this study indicated that this strain could be a potential mycoherbicide for barnyardgrass control in paddy fields in the future.

摘要

稗草（Echinochloa crusgalli (L.) Beauv.）是全球移栽稻和直播稻田中最棘手的杂草之一。为制定稗草生物防治策略，从表现出坏死和萎蔫症状的稗草植株中分离出真菌菌株。经过致病性测试，鉴定出一株对稗草具有高致病性的菌株B-48。根据培养和DNA序列数据，该菌株被鉴定为[具体菌种未给出]。用[该菌株]接种稗草植株导致鲜重显著降低。菌株B-48在稗草三叶至四叶期对其致病性很强。当以1×10孢子/mL的浓度接种时，可以使稗草鲜重降低50%以上。该菌株对水稻和大多数植物物种安全。本研究结果表明，该菌株未来可能成为稻田稗草防治的潜在真菌除草剂。