[1]李坤,洪秀杰,王欣悦,等.贝莱斯芽孢杆菌TC-52的分离鉴定及其对水稻幼苗生长和立枯病的影响[J].江苏农业科学,2024,52(10):129-137.
 Li Kun,et al.Isolation and identification of Bacillus velezensis TC-52 and its effect on rice seedling growth and blight[J].Jiangsu Agricultural Sciences,2024,52(10):129-137.
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贝莱斯芽孢杆菌TC-52的分离鉴定及其对水稻幼苗生长和立枯病的影响()

《江苏农业科学》[ISSN:1002-1302/CN:32-1214/S]

卷:
第52卷
期数:
2024年第10期
页码:
129-137
栏目:
植物保护
出版日期:
2024-05-20

文章信息/Info

Title:
Isolation and identification of Bacillus velezensis TC-52 and its effect on rice seedling growth and blight
作者:
李坤12洪秀杰3王欣悦1齐鹏宇12霍佳慧12于欣卉12商梓琳1毕少杰12王彦杰12
1.黑龙江八一农垦大学生命科学技术学院/黑龙江省寒区环境微生物与农业废弃物资源化利用重点实验室,黑龙江大庆 163319;2.黑龙江八一农垦大学生命科学技术学院/农业农村部东北平原农业绿色低碳重点实验室,黑龙江大庆 163319;3.大庆市农业技术推广中心,黑龙江大庆 163411
Author(s):
Li Kunet al
关键词:
水稻立枯病尖孢镰刀菌贝莱斯芽孢杆菌生物防治
Keywords:
-
分类号:
S182;S435.111
DOI:
-
文献标志码:
A
摘要:
为丰富可用于水稻育秧基质防治由尖孢镰刀菌(Fusarium oxysporum)所引起的水稻立枯病的生防菌资源,从大豆根际土壤中分离得到1株对尖孢镰刀菌有拮抗作用的细菌,对该菌株分泌的胞外酶与促生能力进行了测定,并进行菌种鉴定。同时,初步研究了该菌株的抑菌谱、对水稻幼苗的促生作用以及对水稻立枯病的防治效果。研究结果表明,菌株TC-52为贝莱斯芽孢杆菌(Bacillus velezensis),其对尖孢镰刀菌抑菌率达到72.7%,其分泌的上清液和挥发性气体都能抑制尖孢镰刀菌的生长,并具有广谱抑菌活性;该菌株能够分泌蛋白酶、纤维素酶与几丁质酶并具有固氮、产铁载体与吲哚-3-乙酸(IAA)能力,其IAA产量达到21.70 μg/mL,耐受最低pH值达到4.0。与无菌水浸种处理相比,1.0×106 CFU/mL的菌悬液浸种,水稻胚根的生长量可提高19%;相较于未添加生防菌的育秧基质,在菌浓度为1.0×109 CFU/mL的育秧基质中种植水稻,主根长度增长了25%,侧根数增加了29%,对水稻立枯病的防治效果>75%。可见,菌株TC-52在水稻育秧基质中具有促生与防病作用,有一定的开发和应用潜力。
Abstract:
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备注/Memo

备注/Memo:
收稿日期:2023-11-20
基金项目:黑龙江省大学生创新创业训练计划(编号:201910223008);黑龙江八一农垦大学“揭榜挂帅”项目(编号:JB20220001);资源化利用木糖渣等生产系列肥料的研发(编号:2021066)。
作者简介:李坤(1997—),男,山东烟台人,硕士研究生,从事农用微生物的筛选与应用研究。E-mail:1137021417@qq.com。
通信作者:王彦杰,博士,教授,从事农业废弃物资源化研究。E-mail:wangyanjie1972@163.com。
更新日期/Last Update: 2024-05-20