Induced systemic resistance and promotion of plant growth in oil palm seedlings by endophytic Trichoderma virens

Lee Angel Lee Pei, . and Shamala Sundram, . and Amalia Mohd Hashim, . and Farah Amira Md Paudzai, . and Mohd Termizi Yusof, . and Siti Nor Akmar Abdullah, . Induced systemic resistance and promotion of plant growth in oil palm seedlings by endophytic Trichoderma virens. pp. 572-581. ISSN 1511-2780

Trichoderma spp. have been widely used as a biological control agent for plant disease including basal stem rot (BSR) in oil palm. Trichoderma spp. control pathogens through mycoparasitism antibiosis and triggering induced systemic resistance (ISR) in plants during the colonisation of plant roots limiting the manifestation of the pathogenic fungi. In this study we investigated the role of endophytic Trichoderma virens as a plant-growth promoter and its ability to prime the immune system of the host through ISR in oil palm. Mixed application of two endophytic isolates of T. virens 7b and 159c was found to significantly enhance the growth and development of oil palm seedlings in terms of height girth and chlorophyll content compared to individual treatment. However results showed that individual treatment of 7b and 159c was better in lignin biosynthesis. Plant defence-related enzyme activities; peroxidase polyphenol oxidase superoxide dismutase and phenylalanine lyase were prominently elevated in the leaves of oil palm seedlings upon treatment of the respective T. virens isolates via plant roots. This study demonstrated the triggering of ISR in oil palm seedlings via T. virens treatment and proving that the inoculation of T. virens isolates 7b and 159c were able to promote the vegetative growth and development of oil palm seedlings.

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Abstract

Trichoderma spp. have been widely used as a biological control agent for plant disease including basal stem rot (BSR) in oil palm. Trichoderma spp. control pathogens through mycoparasitism antibiosis and triggering induced systemic resistance (ISR) in plants during the colonisation of plant roots limiting the manifestation of the pathogenic fungi. In this study we investigated the role of endophytic Trichoderma virens as a plant-growth promoter and its ability to prime the immune system of the host through ISR in oil palm. Mixed application of two endophytic isolates of T. virens 7b and 159c was found to significantly enhance the growth and development of oil palm seedlings in terms of height girth and chlorophyll content compared to individual treatment. However results showed that individual treatment of 7b and 159c was better in lignin biosynthesis. Plant defence-related enzyme activities; peroxidase polyphenol oxidase superoxide dismutase and phenylalanine lyase were prominently elevated in the leaves of oil palm seedlings upon treatment of the respective T. virens isolates via plant roots. This study demonstrated the triggering of ISR in oil palm seedlings via T. virens treatment and proving that the inoculation of T. virens isolates 7b and 159c were able to promote the vegetative growth and development of oil palm seedlings.

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Item Type:	Article
AGROVOC Term:	Oil palm
AGROVOC Term:	Elaeis guineensis
AGROVOC Term:	Seedlings
AGROVOC Term:	Plant disease control
AGROVOC Term:	Endophytes
AGROVOC Term:	Trichoderma
AGROVOC Term:	Plant growth regulators
AGROVOC Term:	Induced resistance
AGROVOC Term:	Immune system
AGROVOC Term:	Growth
Depositing User:	Mr. AFANDI ABDUL MALEK
Last Modified:	24 Apr 2025 00:54
URI:	http://webagris.upm.edu.my/id/eprint/8795

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