Open AccessThe effectiveness of plant growth promoting rhizobacteria isolated from Gunung Ciremai National Park forest to control alternaria blight disease of tomato
Author(s) -
Nadhifatul Rizkia,
Suryo Wiyono
Publication year - 2020
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/468/1/012039
Subject(s) - alternaria solani , blight , alternaria , biology , rhizobacteria , germination , seedling , horticulture , biological pest control , botany , agronomy , rhizosphere , bacteria , genetics
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)