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Screening for host responses in Acacia to a canker and wilt pathogen, Ceratocystis manginecans

Citation

Trang, TT and Eyles, A and Davies, N and Glen, M and Ratkowsky, D and Mohammed, C, Screening for host responses in Acacia to a canker and wilt pathogen, Ceratocystis manginecans, Forest Pathology, 48, (1) Article e12390. ISSN 1437-4781 (2018) [Refereed Article]


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Copyright Statement

2017 Blackwell Verlag GmbH This is the pre-peer reviewed version of the following article: Trang, T.T., Eyles, A., Davies, N., Glen, M., Ratkowsky, D., Mohammed, C., 2017. Screening for host responses in Acacia to a canker and wilt pathogen, Ceratocystis manginecans, Forest pathology, 48(1) Article e12390, which has been published in final form at http://dx.doi.org/10.1111/efp.12390 This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving.

DOI: doi:10.1111/efp.12390

Abstract

In Vietnam, the productivity of Acacia hybrid (Acacia mangium x A. auriculiformis) plantations is being threatened by an aggressive canker pathogen, Ceratocystis manginecans and selection for tolerance is the main control strategy. A pot trial was established in Binh Duong province to screen for the host response of nine Acacia genotypes (six Acacia hybrid clones, two A. auriculiformis clones and mixed provenance seedlings of A. mangium) to artificial inoculation with three isolates of C. manginecans. Lesion lengths as measured on the inner bark suggested that the two A. auriculiformis clones were relatively more tolerant to C. manginecans than the A. mangium genotype. In contrast, the lesion lengths of all six Acacia hybrid clones fell between the A. auriculiformis and A. mangium genotypes. The results of this study indicate that among the Acacia hybrid clones, BV10 showed the most tolerance to C. manginecans. Chemical analysis of crude sapwood extracts sampled from the lesion provided some evidence that induced phenolic compounds, particularly tetrahydroxyflavanone and condensed tannins may have a defensive role in the Acacia C. manginecans pathosystem. However, results were not consistent across individual Acacia hybrid clones and A. mangium genotypes.

Item Details

Item Type:Refereed Article
Keywords:Acacia genotypes, basidiomycetes, Ceratocystis manginecans, phenolic compounds
Research Division:Agricultural and Veterinary Sciences
Research Group:Forestry Sciences
Research Field:Forestry Pests, Health and Diseases
Objective Division:Plant Production and Plant Primary Products
Objective Group:Forestry
Objective Field:Hardwood Plantations
UTAS Author:Trang, TT (Mr Trang Tran Thanh)
UTAS Author:Eyles, A (Dr Alieta Eyles)
UTAS Author:Davies, N (Associate Professor Noel Davies)
UTAS Author:Glen, M (Dr Morag Glen)
UTAS Author:Ratkowsky, D (Dr David Ratkowsky)
UTAS Author:Mohammed, C (Professor Caroline Mohammed)
ID Code:120945
Year Published:2018 (online first 2017)
Web of Science® Times Cited:5
Deposited By:Tasmanian Institute of Agriculture
Deposited On:2017-09-04
Last Modified:2018-05-24
Downloads:78 View Download Statistics

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