Colletotrichum echinochloae: A Potential Bioherbicide Agent for Control of Barnyardgrass (Echinochloa crus-galli (L.) Beauv.).
Colletotrichum echinochloae: A Potential Bioherbicide Agent for Control of Barnyardgrass (Echinochloa crus-galli (L.) Beauv.).
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Colletotrichum echinochloae：一种潜在的生物除草剂，用于控制稗草 (Echinochloa crus-galli (L.) Beauv.
DOI：
10.3390/plants12030421
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发表时间：
2023-01-17
期刊：
影响因子：
--
通讯作者：
Li R
中科院分区：
文献类型：
--
作者：
Gu Q;Chu S;Huang Q;Chen A;Li L;Li R
稗子草（Echinochloa cross -galli， L.）是世界上移栽和直播水稻中最麻烦的杂草之一。为了制定一种生物防治策略，从表现出坏死和枯萎迹象的稗子草植物中分离出真菌。经致病性试验，鉴定出一株对稗草具有高致病性的分离株B-48。通过培养和DNA序列分析，鉴定该菌株为炭疽杆菌。用棘球蚴接种稗草植株可显著降低其鲜重。分离物B-48对三至四叶期的稗草具有高致病性。当接种浓度为1 × 107孢子/mL时，稗草鲜重可减少50%以上。该菌株对水稻和大多数植物都是安全的。本研究结果表明，该菌株可作为一种潜在的杀菌剂用于稻田稗草的防治。
Barnyardgrass (Echinochloa crus-galli (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 Colletotrichum echinochloae. The inoculation of the barnyardgrass plant with C. echinochloae 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 × 107 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.
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16.5
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