Bacterial endophytes from Chukrasiatabularis can antagonize Hypsipylarobusta larvae

Damage by the shoot-tip borer Hypsipyla robusta (Lepidoptera: Pyralidae) has limited the commercial cultivation of Chukrasia tabularis (Meliaceae) in many parts of the world. Recently, a number of C. tabularis families in Vietnam have shown field resistance to H. robusta . This study explores whethe...

Full description

Saved in:
Bibliographic Details
Published in:Phytoparasitica 2022-07, Vol.50 (3), p.655-668
Main Authors: Tra, T. T. L., Chi, N. M., Anh, D. T. K., Thu, P. Q., Nhung, N. P., Dell, B.
Format: Article
Language:English
Subjects:
Agriculture
Bacteria
Biological activity
Biological control
Biomedical and Life Sciences
Borers
Damage
Ecology
Endophytes
Inoculation
Laboratories
Larvae
Life Sciences
Metabolites
Phylogeny
Plant Pathology
Plant resistance
Plant Sciences
RpoB protein
rRNA 16S
Trees
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Damage by the shoot-tip borer Hypsipyla robusta (Lepidoptera: Pyralidae) has limited the commercial cultivation of Chukrasia tabularis (Meliaceae) in many parts of the world. Recently, a number of C. tabularis families in Vietnam have shown field resistance to H. robusta . This study explores whether endophytic bacteria in C. tabularis can inhibit the development of H. robusta . Endophytic bacteria from resistant trees had strong repellent (73–97%) and antifeedant (74–84%) activity with H. robusta in laboratory trials. The most biologically active isolates were identified as Bacillus bombysepticus (4 isolates) and Bacillus velezensis (2 isolates) based on phylogenetic analysis of 16S rRNA, gyrB, pycA and rpoB. Fifteen days after releasing H. robusta larvae in a nursery trial, spray inoculation with bacterial solutions from resistant trees reduced shoot tip damage by over 60% compared with the control. Spray treatments with bacterial endophytes from susceptible trees were less effective. These findings have application to the future development of biological control of H. robusta , and the selection of resistant trees for breeding.
ISSN:0334-2123
1876-7184
DOI:10.1007/s12600-022-01001-6