Endophytic Trichoderma Isolates from Tropical Environments Delay Disease Onset and Induce Resistance Against Phytophthora capsici in Hot Pepper Using Multiple Mechanisms

Title
Endophytic Trichoderma Isolates from Tropical Environments Delay Disease Onset and Induce Resistance Against Phytophthora capsici in Hot Pepper Using Multiple Mechanisms
Author(s)
배한홍로벗츠[로벗츠]임현섭[임현섭]스트렘[스트렘]박수철[박수철]류충민[류충민]멜닉[멜닉]베일리[베일리]
Keywords
LIPID TRANSFER PROTEIN; INDUCED SYSTEMIC RESISTANCE; BIOLOGICAL-CONTROL AGENTS; PLANT-ROOT COLONIZATION; DEFENSE RESPONSES; BIOCONTROL AGENT; THEOBROMA-CACAO; HYPERSENSITIVE RESPONSE; GENE-EXPRESSION; MOSAIC-VIRUS
Issue Date
201103
Publisher
AMER PHYTOPATHOLOGICAL SOC
Citation
MOLECULAR PLANT-MICROBE INTERACTIONS, v.24, no.3, pp.336 - 351
Abstract
Endophytic Trichoderma isolates collected in tropical environments were evaluated for biocontrol activity against Phytophthora capsici in hot pepper (Capsicum annum). Six isolates were tested for parasitic and antimicrobial activity against P capsici and for endophytic and induced resistance capabilities in pepper. Isolates DES 70a, DIS 219b, and DIS 376f were P capsici parasites, while DIS 70a, DIS 259j, DIS 320c, and DIS 376f metabolites inhibited P capsici. All six isolates colonized roots but were inefficient stem colonizers. DIS 259j, DIS 320c, and DIS 376f induced defense-related expressed sequence tags (EST) in 32-day-old peppers. DIS 70a, DIS 259j, and DIS 376f delayed disease development. Initial colonization of roots by DIS 259j or DIS 376f induced EST with potential to impact Trichoderma endophytic colonization and disease development, including multiple lipid transferase protein (LTP)-like family members. The timing and intensity of induction varied between isolates. Expression of CaLTP-N, encoding a LTP-like protein in pepper, in N. benthamiana leaves reduced disease development in response to P. nicotianae inoculation, suggesting LTP are functional components of resistance induced by Trichoderma species. Trichoderma isolates were endophytic on pepper roots in which, depending on the isolate, they delayed disease development by P. capsici and induced strong and divergent defense reactions.
URI
http://hdl.handle.net/YU.REPOSITORY/25510http://dx.doi.org/10.1094/MPMI-09-10-0221
ISSN
0894-0282
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생명공학부 > 생명공학부 > Articles
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