一株枯草芽胞杆菌L249的分离鉴定及对烟草赤星病的盆栽防效

S435.72; 为筛选出对烟草赤星病具有生防潜力的拮抗细菌,以链格孢菌(Alteraria alternata)为靶标菌,采用5点取样法在赤星病发生严重地块采集健康烟株根际土壤,通过梯度稀释分离法和平板对峙法筛选得到一株具有生防作用的拮抗菌L249,对链格孢菌抑菌率达72.27%,经菌落形态、生理生化和分子生物学鉴定为枯草芽胞杆菌(Bacillus subtilis).该菌能产生蛋白酶、纤维素酶和硝酸还原酶等生防相关酶类.利用比浊法测定菌株L249的生长速率,结果表明该菌培养4h后进入对数生长期,14 h后进入稳定生长期.盆栽试验结果表明,菌株L249发酵液能有效抑制烟草赤星病的发生,相对防...

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Published in烟草科技 Vol. 56; no. 5; pp. 25 - 32
Main Authors 胡珊, 彭剑涛, 莫维弟, 周志成, 丁海霞, 彭丽娟
Format Journal Article
LanguageChinese
Published 贵州大学烟草学院,贵阳市花溪区花溪大道南段2708号 550025%贵州大学烟草学院,贵阳市花溪区花溪大道南段2708号 550025 01.05.2023
贵州省烟草品质研究重点实验室,贵阳市花溪区花溪大道南段2708号 550025%贵州大学农学院,贵阳市花溪区花溪大道南段2708号 550025
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ISSN1002-0861
DOI10.16135/j.issn1002-0861.2022.0715

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Abstract S435.72; 为筛选出对烟草赤星病具有生防潜力的拮抗细菌,以链格孢菌(Alteraria alternata)为靶标菌,采用5点取样法在赤星病发生严重地块采集健康烟株根际土壤,通过梯度稀释分离法和平板对峙法筛选得到一株具有生防作用的拮抗菌L249,对链格孢菌抑菌率达72.27%,经菌落形态、生理生化和分子生物学鉴定为枯草芽胞杆菌(Bacillus subtilis).该菌能产生蛋白酶、纤维素酶和硝酸还原酶等生防相关酶类.利用比浊法测定菌株L249的生长速率,结果表明该菌培养4h后进入对数生长期,14 h后进入稳定生长期.盆栽试验结果表明,菌株L249发酵液能有效抑制烟草赤星病的发生,相对防效达60.66%,与10%苯醚甲环唑水分散粒剂的相对防效差异不显著.枯草芽胞杆菌L249可有效防治烟草赤星病,具有较好的生防潜力.
AbstractList S435.72; 为筛选出对烟草赤星病具有生防潜力的拮抗细菌,以链格孢菌(Alteraria alternata)为靶标菌,采用5点取样法在赤星病发生严重地块采集健康烟株根际土壤,通过梯度稀释分离法和平板对峙法筛选得到一株具有生防作用的拮抗菌L249,对链格孢菌抑菌率达72.27%,经菌落形态、生理生化和分子生物学鉴定为枯草芽胞杆菌(Bacillus subtilis).该菌能产生蛋白酶、纤维素酶和硝酸还原酶等生防相关酶类.利用比浊法测定菌株L249的生长速率,结果表明该菌培养4h后进入对数生长期,14 h后进入稳定生长期.盆栽试验结果表明,菌株L249发酵液能有效抑制烟草赤星病的发生,相对防效达60.66%,与10%苯醚甲环唑水分散粒剂的相对防效差异不显著.枯草芽胞杆菌L249可有效防治烟草赤星病,具有较好的生防潜力.
Author 莫维弟
胡珊
周志成
丁海霞
彭剑涛
彭丽娟
AuthorAffiliation 贵州大学烟草学院,贵阳市花溪区花溪大道南段2708号 550025%贵州大学烟草学院,贵阳市花溪区花溪大道南段2708号 550025;贵州省烟草品质研究重点实验室,贵阳市花溪区花溪大道南段2708号 550025%贵州大学农学院,贵阳市花溪区花溪大道南段2708号 550025
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PENG Jiantao
MO Weidi
HU Shan
ZHOU Zhicheng
PENG Lijuan
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DocumentTitle_FL Isolation and identification of Bacillus subtilis strain L249 and its control effect on tobacco brown spot disease in pot experiments
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Keywords 生长速率
枯草芽胞杆菌
防效
烟草赤星病
分离鉴定
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贵州省烟草品质研究重点实验室,贵阳市花溪区花溪大道南段2708号 550025%贵州大学农学院,贵阳市花溪区花溪大道南段2708号 550025
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Snippet S435.72; 为筛选出对烟草赤星病具有生防潜力的拮抗细菌,以链格孢菌(Alteraria alternata)为靶标菌,采用5点取样法在赤星病发生严重地块采集健康烟株根际土壤,通过梯度稀释...
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Title 一株枯草芽胞杆菌L249的分离鉴定及对烟草赤星病的盆栽防效
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