Effect of endophytic bacteria Bacillus subtilis EPC 5 on basal stem rot disease spread and nut yield in coconut plantations

Q4 Biochemistry, Genetics and Molecular Biology

Journal of Applied Horticulture Pub Date : 2018-12-15 DOI:10.37855/jah.2018.v20i03.36

L. Rajendran, G. Karthikeyan, T. Raguchander, R. Samiyappan

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引用次数: 0

Abstract

The wood degrading fungi Ganoderma lucidum (Leys) Karst causing Basal Stem Rot (BSR) in coconut plantation is the most destructive disease in Southern India. The control of this soil borne pathogen is particularly complex due to their occurrence in dynamic environment at the interface of the root with the soil. Hence, combinations of biocontrol agents differing in their mode of action especially with endophyte have been explored. The endophytic bacteria Bacillus subtilis EPC 5 from healthy coconut palm root showed high inhibition activity among fifty five isolated strains. Further, talc-based formulation incorporating Pseudomonas fluorescens Pf1 and Trichoderma viride Tv1 were developed and used individually, in combination to manage highly virulent, laccase producing soil borne pathogen. The result indicated that soil application of above mentioned antagonist in combination @ 100 g each enriched with organic substrate for four times per year, significantly reduced the disease severity with high nut yield at two different locations of disease endemic areas.

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内生细菌枯草芽孢杆菌ep5对椰子基腐病传播及坚果产量的影响

在印度南部，引起椰子基茎腐病(BSR)的木材降解真菌灵芝(Ganoderma lucidum)是最具破坏性的病害。由于这种土传病原体发生在根与土壤交界的动态环境中，因此防治特别复杂。因此，生物防治剂的组合在其作用模式不同，特别是与内生菌已被探索。健康椰子树根内生细菌枯草芽孢杆菌ep5在55株分离菌株中表现出较高的抑制活性。此外，还开发了含有荧光假单胞菌Pf1和绿色木霉Tv1的滑石粉配方，并单独使用，以联合使用来管理高毒力的、产生漆酶的土传病原体。结果表明，在病区的两个不同位置，每年4次，每组100 g施用上述拮抗剂，可显著降低疾病严重程度，并提高坚果产量。

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来源期刊

Journal of Applied Horticulture Agricultural and Biological Sciences-Horticulture

CiteScore

0.90

自引率

0.00%

发文量

期刊介绍： The Journal of Applied Horticulture (JAH) is an official publication of the Society for the Advancement of Horticulture, founded in 1999. JAH is a triannual publication, publishes papers of original work (or results), & rapid communications and reviews on all aspects of Horticultural Science which can contribute to fundamental and applied research on horticultural plants and their related products. The essential contents of manuscripts must not have been published in other refereed publications. Submission of a manuscript to the Journal implies no concurrent submission elsewhere.