Rhizobacterium Bacillus amyloliquefaciens Strain SQRT3-Mediated Induced Systemic Resistance Controls Bacterial Wilt of Tomato

LI Chunyu; SHEN Qirong; HU Weicong; PAN Bin; LIU Yan; YUAN Saifei; DING Yuanyuan; LI Rong; ZHENG Xinyan; SHEN Biao

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Rhizobacterium Bacillus amyloliquefaciens Strain SQRT3-Mediated Induced Systemic Resistance Controls Bacterial Wilt of Tomato

机译：解淀粉芽孢杆菌根瘤菌菌株SQRT3介导的诱导的系统抗性控制番茄细菌性枯萎

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Tomato bacterial wilt caused by Ralstonia solanacearum seriously threats tomato growth in tropical and temperate regions around the world.This study reported an antagonistic bacterial strain,Bacillus amyloliquefaciens strain SQRT3,isolated from the rhizosphere soil of tomato plants,which strongly inhibited in vitro growth of pathogenic R.solanacearum.The suppression of tomato bacterial wilt by strain SQRT3 was demonstrated under greenhouse conditions.Additionally,induced systemic resistance (ISR) in tomato as one of the potential disease suppression mechanisms was investigated in the plants inoculated with the isolated bacterial strain SQRT3.The results showed that strain SQRT3 applied with R.solanacearum by drenching significantly reduced tomato bacterial wilt by 68.1％ biocontrol efficiency (BE) and suppressed the R.solanacearum populations in the rhizosphere soil compared to the control only drenched with R.solanacearum.The BE of the isolated bacterial strain SQRT3 against tomato wilt increased to 84.1％ by root-dipping.Tomato plants treated with both strain SQRT3 and R.solanacearum showed increases in activities of peroxidase and polyphenol oxidase compared with other treatments.The application of strain SQRT3 reduced membrane lipid peroxidation in tomato leaves.The expressions of marker genes for jasmonic acid-and salicylic acid-dependent signaling pathways were faster and stronger in tomato plants treated with both strain SQRT3 and R.solanacearum than in plants treated with either R.solanacearum or strain SQRT3 alone.Collectively,the findings indicated that strain SQRT3 can effectively control tomato wilt.

机译：由青枯雷尔氏菌引起的番茄枯萎病严重威胁着全球热带和温带地区的番茄生长。该研究报道了一种拮抗细菌菌株，解淀粉芽孢杆菌菌株SQRT3，其从番茄植物的根际土壤中分离，强烈抑制了病原体的体外生长。在温室条件下证明了菌株SQRT3对番茄枯萎病具有抑制作用。此外，在接种分离的细菌菌株SQRT3的植物中，研究了番茄诱导的系统抗性（ISR）作为潜在的疾病抑制机制之一。结果表明，与仅湿润雷公藤的对照相比，SQRT3菌株通过湿润施肥的番茄显着降低了番茄细菌枯萎的生物防治效率（BE），抑制了68.1％的生根效率，并抑制了根际土壤中的番茄枯萎病菌种群。分离菌株SQRT3对番茄的抗性通过浸根使t增加到84.1％。与其他处理相比，SQRT3和R.solanacearum菌株处理的番茄植株的过氧化物酶和多酚氧化酶的活性均增加。分别用SQRT3和R.solanacearum菌株处理的番茄植物中，茉莉酸和水杨酸依赖性信号通路的标记基因比单独使用R.solanacearum或SQRT3菌株的植物更快，更强。 SQRT3菌株可以有效控制番茄的枯萎病。

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《土壤圈（英文版）》 |2017年第6期|1135-1146|共12页
作者
LI Chunyu; SHEN Qirong; HU Weicong; PAN Bin; LIU Yan; YUAN Saifei; DING Yuanyuan; LI Rong; ZHENG Xinyan; SHEN Biao;
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作者单位

Jiangsu Key Laboratory for Organic Solid Waste Utilization, Nanjing Agricultural University, Nanjing 210095(China);

Jiangsu Key Laboratory for Organic Solid Waste Utilization, Nanjing Agricultural University, Nanjing 210095(China);

Jiangsu Key Laboratory for Organic Solid Waste Utilization, Nanjing Agricultural University, Nanjing 210095(China);

Jiangsu Key Laboratory for Organic Solid Waste Utilization, Nanjing Agricultural University, Nanjing 210095(China);

Jiangsu Key Laboratory for Organic Solid Waste Utilization, Nanjing Agricultural University, Nanjing 210095(China);

Jiangsu Key Laboratory for Organic Solid Waste Utilization, Nanjing Agricultural University, Nanjing 210095(China);

Jiangsu Key Laboratory for Organic Solid Waste Utilization, Nanjing Agricultural University, Nanjing 210095(China);

Jiangsu Key Laboratory for Organic Solid Waste Utilization, Nanjing Agricultural University, Nanjing 210095(China);

Jiangsu Key Laboratory for Organic Solid Waste Utilization, Nanjing Agricultural University, Nanjing 210095(China);

Jiangsu Key Laboratory for Organic Solid Waste Utilization, Nanjing Agricultural University, Nanjing 210095(China);

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收录信息中国科学引文数据库(CSCD);中国科技论文与引文数据库(CSTPCD);
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Rhizobacterium Bacillus amyloliquefaciens Strain SQRT3-Mediated Induced Systemic Resistance Controls Bacterial Wilt of Tomato

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