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Published VersionCC BY V4.0, Open Access
Journal article
Synergistic Ability of Chitosan and Trichoderma harzianum to Control the Growth and Discolouration of Common Sapstain Fungi of Pinus radiata
Forests, Vol.12(5), pp.1-11
2021
Abstract
An environmentally compatible method for controlling sapstain fungi in wood was evaluated, using a combination of chitosan and an albino strain of Trichoderma harzianum, a biological control agent (BCA). The growth and penetration into the wood of the sapstain fungi Ophiostoma piceae, Leptographium procerum, and Sphaeropsis sapinea were assessed in radiata pine wafers treated with chitosan and BCA, both alone and in combination. Several mycological and microscopic techniques were used, including a gfp (green fluorescent protein) transformed strain of O. piceae for assessing the depth of penetration in the wood samples. The synergy between the chitosan and BCA was evident, and for two tested fungi, only the combination of chitosan and BCA afforded protection. The synnemata (recognized by erect conidiogenous cells bearing conidia) was observed on the surface of the wafers inoculated with L. procerum and O. piceae, but the hyphae were unable to penetrate and melanise. The results suggest that the limited ability of chitosan to penetrate deeply into the wood was compensated by the fast growth of T. harzianum in the inner wood.
Details
- Title
- Synergistic Ability of Chitosan and Trichoderma harzianum to Control the Growth and Discolouration of Common Sapstain Fungi of Pinus radiata
- Authors
- Tripti Singh (Corresponding Author) - ScionColleen Chittenden (Author) - Scion
- Publication details
- Forests, Vol.12(5), pp.1-11
- Publisher
- MDPI AG
- Date published
- 2021
- DOI
- 10.3390/f12050542
- ISSN
- 1999-4907
- Copyright note
- © 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
- Grant note
- This research was funded by the Ministry of Business, Innovation, and Employment (MBIE), Wellington, New Zealand.
- Organisation Unit
- National Centre for Timber Durability and Design Life
- Language
- English
- Record Identifier
- 99979639502621
- Output Type
- Journal article
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