Abstract

The aim of the present study was to focus on the growth promotion and wilt diseases protection of tomato plants by Bacillus sp. LBF-01.The plant growth promotion (both in vitro and in vivo) and diseases protection mechanism were studied following standard protocols. This bacterial strain showed positive PGP and antifungal traits against the wilt pathogen Fusarium sp. The seed bacterization with Bacillus sp. LBF-01 improved the germination rate of tomato seeds by 20% compared to the control whereas the vigor index was increased by 854.026%.The percentage of disease protection by Bacillus sp. LBF-01 against root-rot disease inoculated was inversely proportional to the doses of fungal spores inoculum. Under in vivo condition, the PGP bacteria enhanced the seedling growth in nursery as well as field condition. Application of Bacillus sp. LBF-01 enhanced the activity of defense related enzymes in root and leaves. Bacillus sp. LBF-01 treatment had significantly enhanced total chlorophyll and carotenoids contents of leaves by 77.78 and 52.5% over untreated control plants. It is evident from the present study that the application of the Bacillus sp. LBF-01 bacterial strain in tomato soil improved the potentiality of the plant by systemic resistance and control the wilt diseases for tomato production.

中文翻译：

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芽孢杆菌的生物防治潜力和生长促进能力。LBF-1用于治疗镰刀菌引起的番茄枯萎病。

摘要

本研究的目的是着重于芽孢杆菌属菌株对番茄植物的生长促进和保护枯萎病。LBF-01。按照标准方案研究了促进植物生长（体外和体内）和疾病防护机制。该细菌菌株对枯萎病病原镰刀菌（Fusarium sp。）表现出正PGP和抗真菌特性。用芽孢杆菌属种对细菌进行杀菌。LBF-01相比而活力指数是由增加了疾病的保护的854.026％。该比例控制提高了20％的番茄种子的发芽率芽孢杆菌属。接种针对根腐病的LBF-01与真菌孢子接种量成反比。在体内PGP细菌可促进苗圃和田间条件下的幼苗生长。芽孢杆菌属的应用。LBF-01增强了根和叶中防御相关酶的活性。芽孢杆菌属。与未处理的对照植物相比，LBF-01处理显着提高了叶片的总叶绿素和类胡萝卜素含量，分别为77.78和52.5％。从本研究中可以明显看出芽孢杆菌属的应用。番茄土壤中的LBF-01细菌菌株通过系统抗性提高了植物的潜力，并控制了番茄生产中的枯萎病。