Interactions of Bacillus spp. and plants - With special reference to induced systemic resistance (ISR)
Interactions of Bacillus spp. and plants - With special reference to induced systemic resistance (ISR)
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DOI：
10.1016/j.micres.2008.08.007
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发表时间：
2009-01-01
影响因子：
6.7
通讯作者：
Johri, Bhavdish N.
中科院分区：
文献类型：
--
作者：
Choudhary, Devendra K.;Johri, Bhavdish N.
土传病原体的生物防治包括通过一种或多种机制减少接种量或病原菌的致病活性。在过去的几十年里，对土传植物病原体的生物防治的兴趣大大增加，因为它可能提供对不能或只能部分地通过其他控制策略来管理的疾病的控制。微生物和分子技术的最新进展极大地促进了对引入细菌功能的潜在机制的新见解。植物根部的定植是必不可少的。土壤传播的致病和有益根际细菌的步骤。定殖模式表明，根际细菌可作为生防菌或促生菌，在根系分泌物的首选部位形成微菌落或生物膜。这种微菌落是细菌相互交流(群体感应)并以协调方式行动的场所。利用假单胞菌初步证实了植物伴生细菌诱导的系统抗性(ISR)。和其他革兰氏阴性细菌。好几个。淀粉芽孢杆菌、枯草芽孢杆菌、巴氏杆菌、蜡状芽孢杆菌、短小芽孢杆菌、芽孢杆菌和球形芽孢杆菌的菌株在不同的宿主上显著降低了各种疾病的发病率或严重程度。在番茄、甜椒、甜瓜、西瓜、甜菜、烟草、拟南芥、黄瓜、火炬松和两种热带作物(辣椒和青椒)上，这些菌株已在温室或田间试验中证明了它们对ISR的诱导。芽孢杆菌诱导的ISR保护作用。已有抗叶斑病和细菌性病原菌、系统性病毒、树冠腐烂真菌的报道。病原菌、根结线虫和茎枯萎病菌以及立枯病、蓝霉病和晚疫病。这一进展将导致更有效地利用这些菌株，这是在生物防治战略背景下值得探索的办法。(C)2008年爱思唯尔股份有限公司。版权所有。
Biological control of soil-borne pathogens comprises the decrease of inoculum or of the disease producing activity of a pathogen through one or more mechanisms. Interest in biological control of soil-borne plant pathogens has increased considerably in the last few decades, because it may provide control of diseases that cannot or only partly be managed by other control strategies. Recent advances in microbial and molecular techniques have significantly contributed to new insights in underlying mechanisms by which introduced bacteria function. Colonization of plant roots is an essential. step for both soil-borne pathogenic and beneficial rhizobacteria. Colonization patterns showed that rhizobacteria act as biocontrol agents or as growth-promoting bacteria form microcolonies or biofilms at preferred sites of root exudation. Such microcolonies are sites for bacteria to communicate with each other (quorum sensing) and to act in a coordinated manner. Elicitation of induced systemic resistance (ISR) by plant-associated bacteria was initially demonstrated using Pseudomonas spp. and other Gram-negative bacteria. Several. strains of the species Bacillus amylotiquefaciens, B. subtilis, B. pasteurii, B. cereus, B. pumilus, B. mycoides, and B. sphaericus elicit significant reductions in the incidence or severity of various diseases on a diversity of hosts. Elicitation of ISR by these strains has been demonstrated in greenhouse or field trials on tomato, bell pepper, muskmelon, watermelon, sugar beet, tobacco, Arabidopsis sp., cucumber, loblolly pine, and two tropical crops (tong cayenne pepper and green kuang futsoi). Protection resulting from ISR elicited by Bacillus spp. has been reported against leaf spotting fungal and bacterial pathogens, systemic viruses, a crown-rotting fungal. pathogen, root-knot nematodes, and a stem-blight fungal pathogen as well as damping-off, blue mold, and late blight diseases. This progress will Lead to a more efficient use of these strains which is worthwhile approach to explore in context of biocontrol strategies. (C) 2008 Elsevier GmbH. All rights reserved.