The effectiveness of plant growth promoting rhizobacteria isolated from Gunung Ciremai National Park forest to control alternaria blight disease of tomato

Tomato is an important horticulture commodity in Indonesia. Alternaria Blight caused by Alternaria solani Ell. & Mart. is an important disease on tomato. Biological control using plant growth promoting rhizobacteria (PGPR) is a promising technique for controlling the disease. One potential sourc...

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Bibliographic Details
Published in:IOP conference series. Earth and environmental science 2020-03, Vol.468 (1), p.12039
Main Authors: Rizkia, N, Wiyono, S
Format: Article
Language:English
Subjects:
Alternaria
Biological control
Blight
Disease control
Forest ecosystems
Forestry research
Germination
Homology
Horticulture
National parks
Plant growth
Seed germination
Seedlings
Tomatoes
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Summary:Tomato is an important horticulture commodity in Indonesia. Alternaria Blight caused by Alternaria solani Ell. & Mart. is an important disease on tomato. Biological control using plant growth promoting rhizobacteria (PGPR) is a promising technique for controlling the disease. One potential source of PGPR is a natural ecosystem area such as forest. This research aimed to determine the effectiveness of 5 PGPR isolated from Gunung Ciremai National Park forest, i.e. AKBR, AKS, C71, KS1, and S2 for controlling Alternaria blight disease on tomato and to assess their effects on plant growth. PGPR was applied by seed coating before planting and bacterial suspension watering on the soils. The research showed that all tested PGPR isolates could delay incubation periods and inhibit the development of blight disease. AKBR and C71 isolates had the highest effectiveness in suppressing A. solani infection with effectiveness rate 68.08% and 62.01% respectively. All tested PGPR isolates increased seed germination and tomato seedling growth. Molecular identification using PCR, followed by sequencing resulted that C71 isolates has 99.8% homology with Lysinibacillus fusiformis (Accession Number: KY910256.1)
ISSN:1755-1307
1755-1315
DOI:10.1088/1755-1315/468/1/012039