期刊论文

中文

微生物学报

0001-6209

2023

63

11

4245-4257

10.13343/j.cnki.wsxb.20230189

长沙市自然科学基金(kq2202337)；

本校为第一机构

[目的]稗草是我国农田危害最严重的恶性杂草之一,化学除草剂的长期使用导致杂草抗药性上升、环境污染等诸多生态环境问题,因此开发绿色、环境友好的高效除草剂显得十分必要且迫切.[方法]采用常规组织分离法、形态学观察和分子生物学方法鉴定NX1 菌株,并采用多元统计分析方法研究NX1 菌株的致病性及其影响因素.[结果]经鉴定NX1 菌株可能为弯孢属新种(Curvularia sp.).该病原菌在 25-30 ℃、pH为 5-11 的条件下均能生长和产孢,其中,在pH为 9、30 ℃ 条件下产孢量最高.光照条件虽然不影响菌丝的生长,但连续光照条件有利于 NX1菌株产孢.NX1 菌株在不同碳源、氮源条件下都能生长,其中对玉米粉和硝酸钠...

[Objective]Echinochloa crusgalli is one of the major noxious weeds in China's farmlands.The long-term use of chemical herbicides has caused eco-environmental problems,such as the enhanced weed resistance and environmental pollution.Therefore,it is urgent to develop environment-friendly high-performance herbicides.[Methods]The strain NX1 was identified by tissue isolation,morphological observation,and molecular biological methods,and its pathogenicity and influencing factors were studied by multivariate statistical analysis.[Results]The strain w...