Rhizosphere and endophytic bacteria for induction of systemic resistance of banana plantlets against bunchy top virus
Rhizosphere and endophytic bacteria for induction of systemic resistance of banana plantlets against bunchy top virus
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DOI：
10.1016/j.soilbio.2006.11.020
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发表时间：
2007-05-01
影响因子：
9.7
通讯作者：
Samiyappan, R.
中科院分区：
文献类型：
--
作者：
Kavino, M.;Harish, S.;Samiyappan, R.
束顶病是影响香蕉生产的重要病毒病之一。已经采取了几种方法来控制或对抗由香蕉蚜虫Pentalonia nigronervosa Coq传播的香蕉束顶病毒病。没有一种策略能够完全保护植物免受这种病毒感染。为了改善这一问题，尝试使用不同的细菌菌株，可以接种到微繁殖植株的根部，以避免移栽后的问题。香蕉病毒指数化微繁殖植株。Virupakshi（AAB）进行根定殖，然后用三种细菌菌株即，荧光假单胞菌菌株Pf1、CHA 0和枯草芽孢杆菌菌株EPB 22沿着与未接种对照在苗圃中的初级和次级硬化阶段以及在移栽时、在田间种植后的第3、5和7个月。接种微生物的试管苗在田间表现出营养生长、生理特性、PR蛋白和酚类物质含量的提高，同时降低了香蕉束顶病（BBTD）的发病率。这些结果表明，用有益细菌菌株改良的移栽混合物可以促进香蕉植株的生长，同时减轻香蕉束顶病毒造成的危害。(c)2007爱思唯尔有限公司保留所有权利。
Bunchy top is one of the most important viral diseases affecting banana production worldwide. Several approaches have been made to control or combat the bunchy top virus disease in banana, transmitted by the banana aphid, Pentalonia nigronervosa Coq. No tactic is able to completely protect the plants against this viral infection. To ameliorate this problem, an attempt was made to use different bacterial strains, which could be inoculated to the roots of micropropagated plantlets to avoid the post transplanting problems. Virus indexed micropropagated plantlets of banana cv. Virupakshi (AAB) were subjected to root colonization followed by foliar spraying with three bacterial strains viz., Pseudomonas fluorescens strains Pf1, CHA0 and Bacillus subtilis strain EPB22 along with an un-inoculated control during primary and secondary hardening stage in the nursery and at the time of transplanting, 3rd, 5th and 7th month after planting in the field. Microbe inoculated plantlets showed improved vegetative growth, physiological attributes, PR-proteins and phenol contents besides reducing banana bunchy top disease (BBTD) incidence in the field. These results indicate that, transplant mixes amended with beneficial bacterial strains can enhance growth of banana plants, besides reducing the damage caused by banana bunchy top virus. (c) 2007 Elsevier Ltd. All rights reserved.