Soft rot decay of Cengal (Neobalanocarpus heimii) heartwood in ground contact in relation to extractive microdistribution
The heartwood of cengal (Neobalanocarpus heimii, fam. Dipterocarpaceae)is naturally durable. A square-sawn utility pole specimen of cengal heartwood, after 30 years in ground contact, showed 10-15 mm surface decay all around the ground line position, accompanied with isolated surface termite attack...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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IRGWP
2003
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| Online Access: | http://ir.unimas.my/id/eprint/16090/ http://ir.unimas.my/id/eprint/16090/1/Soft%20Rot%20Decay%20of%20Cengal%20%28Neobalanocarpus%20heimii%29%20Heartwood%20%28abstract%29.pdf |
| _version_ | 1848837983995691008 |
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| author | Singh, A.P. Wong, Andrew H.H Yoon, Soo Kim Seung, Gon Wi Kwang, Ho Lee |
| author_facet | Singh, A.P. Wong, Andrew H.H Yoon, Soo Kim Seung, Gon Wi Kwang, Ho Lee |
| author_sort | Singh, A.P. |
| building | UNIMAS Institutional Repository |
| collection | Online Access |
| description | The heartwood of cengal (Neobalanocarpus heimii, fam. Dipterocarpaceae)is naturally durable. A square-sawn utility pole specimen of cengal heartwood, after 30 years in ground contact, showed 10-15 mm surface decay all around the ground line position, accompanied with isolated surface termite attack at the decayed region. Light and transmission electron microscopy (TEM) of the decayed regions provided evidence of wood cell wall degradation by cavity-forming soft rot fungi. In the outermost layers, where such decay was most severe and severely discolored, all tissue types were degraded. However, in regions with moderate decay, differences in tissue types were observable in the extent of cell wall degradation. The presence of relatively intact vessels and parenchyma cells among heavily degraded fibres suggested that fibres were more susceptible to decay than vessels and parenchyma. Middle lamella was the only cell wall region which remained intact in all cell types which were severely degraded. |
| first_indexed | 2025-11-15T06:48:20Z |
| format | Article |
| id | unimas-16090 |
| institution | Universiti Malaysia Sarawak |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T06:48:20Z |
| publishDate | 2003 |
| publisher | IRGWP |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | unimas-160902017-05-03T06:46:04Z http://ir.unimas.my/id/eprint/16090/ Soft rot decay of Cengal (Neobalanocarpus heimii) heartwood in ground contact in relation to extractive microdistribution Singh, A.P. Wong, Andrew H.H Yoon, Soo Kim Seung, Gon Wi Kwang, Ho Lee GE Environmental Sciences SD Forestry The heartwood of cengal (Neobalanocarpus heimii, fam. Dipterocarpaceae)is naturally durable. A square-sawn utility pole specimen of cengal heartwood, after 30 years in ground contact, showed 10-15 mm surface decay all around the ground line position, accompanied with isolated surface termite attack at the decayed region. Light and transmission electron microscopy (TEM) of the decayed regions provided evidence of wood cell wall degradation by cavity-forming soft rot fungi. In the outermost layers, where such decay was most severe and severely discolored, all tissue types were degraded. However, in regions with moderate decay, differences in tissue types were observable in the extent of cell wall degradation. The presence of relatively intact vessels and parenchyma cells among heavily degraded fibres suggested that fibres were more susceptible to decay than vessels and parenchyma. Middle lamella was the only cell wall region which remained intact in all cell types which were severely degraded. IRGWP 2003 Article PeerReviewed text en http://ir.unimas.my/id/eprint/16090/1/Soft%20Rot%20Decay%20of%20Cengal%20%28Neobalanocarpus%20heimii%29%20Heartwood%20%28abstract%29.pdf Singh, A.P. and Wong, Andrew H.H and Yoon, Soo Kim and Seung, Gon Wi and Kwang, Ho Lee (2003) Soft rot decay of Cengal (Neobalanocarpus heimii) heartwood in ground contact in relation to extractive microdistribution. International Research Group on Wood Protection. ISSN 2000-8953 https://www.researchgate.net/publication/291350613 |
| spellingShingle | GE Environmental Sciences SD Forestry Singh, A.P. Wong, Andrew H.H Yoon, Soo Kim Seung, Gon Wi Kwang, Ho Lee Soft rot decay of Cengal (Neobalanocarpus heimii) heartwood in ground contact in relation to extractive microdistribution |
| title | Soft rot decay of Cengal (Neobalanocarpus heimii) heartwood in ground contact in relation to extractive microdistribution |
| title_full | Soft rot decay of Cengal (Neobalanocarpus heimii) heartwood in ground contact in relation to extractive microdistribution |
| title_fullStr | Soft rot decay of Cengal (Neobalanocarpus heimii) heartwood in ground contact in relation to extractive microdistribution |
| title_full_unstemmed | Soft rot decay of Cengal (Neobalanocarpus heimii) heartwood in ground contact in relation to extractive microdistribution |
| title_short | Soft rot decay of Cengal (Neobalanocarpus heimii) heartwood in ground contact in relation to extractive microdistribution |
| title_sort | soft rot decay of cengal (neobalanocarpus heimii) heartwood in ground contact in relation to extractive microdistribution |
| topic | GE Environmental Sciences SD Forestry |
| url | http://ir.unimas.my/id/eprint/16090/ http://ir.unimas.my/id/eprint/16090/ http://ir.unimas.my/id/eprint/16090/1/Soft%20Rot%20Decay%20of%20Cengal%20%28Neobalanocarpus%20heimii%29%20Heartwood%20%28abstract%29.pdf |