Laboratory study of toxicity or tolerance of CCA preservative and heavy metal constituents copper, chromium and arsenic to Malaysian tropical fungi
CCA preservative and its constituent heavy metal tolerance and toxicity to 3 Malaysian isolates Phialophora fastigiata (soft rot fungus), Paecilomyces variotii (mould fungus) and an unidentified white rot Basidiomycete, was investigated by the modified ‘Strange-Smith’ agarwell- plate technique wi...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
IRGWP
2011
|
| Subjects: | |
| Online Access: | http://ir.unimas.my/id/eprint/16034/ http://ir.unimas.my/id/eprint/16034/1/Venas.pdf |
| _version_ | 1848837972062896128 |
|---|---|
| author | Wong, Andrew H.H Venas, Thomas Mark Morsing, Niels Tan, Clarence C.L. Chong, Peter Kian Fui |
| author_facet | Wong, Andrew H.H Venas, Thomas Mark Morsing, Niels Tan, Clarence C.L. Chong, Peter Kian Fui |
| author_sort | Wong, Andrew H.H |
| building | UNIMAS Institutional Repository |
| collection | Online Access |
| description | CCA preservative and its constituent heavy metal tolerance and toxicity to 3 Malaysian isolates
Phialophora fastigiata (soft rot fungus), Paecilomyces variotii (mould fungus) and an
unidentified white rot Basidiomycete, was investigated by the modified ‘Strange-Smith’ agarwell-
plate technique with 1.6% CCA concentration and the malt-agar-plate bioassay technique
with a range of CCA and constituent metal salt concentrations of 0.0024 – 5%m/m. Daily linear
hyphal extension was measured between 6 and 22 days depending on relative fungal growth
rates. The slow growing Phialophora fastigiata sustained mean daily hyphal growth (mm) at
relatively higher concentrations of CCA preservative (toxic limits: 0.24 – 0.48%m/m) and their
heavy metal constituents (copper-salt: 5.0 – 10.0%m/m; chromium-salt: 0.076 – 0.24%m/m) than
the faster growing mould isolate Paecilomyces variotii (CCA: 0.019 – 0.076%m/m; chromiumsalt:
0.076 – 0.24%m/m) and the white rot Basidiomycete of intermediate growth rate (CCA:
0.076 – 0.24%m/m; copper-salt: 0.076 – 0.24%m/m; chromium-salt: 0.0095 – 0.019%m/m)
except for arsenic-salt (Phialophora fastigiata: 0.076 – 0.24%m/m; Paecilomyces variotii: 0.48 –
0.95%m/m; Basidiomycete: 0.24 – 0.48%m/m). The results showing varying efficacies (toxicity
versus tolerance) in vitro of CCA and their metal constituents between these fungi can have
implications to ground-contact wood protection capabilities of CCA. |
| first_indexed | 2025-11-15T06:48:09Z |
| format | Article |
| id | unimas-16034 |
| institution | Universiti Malaysia Sarawak |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T06:48:09Z |
| publishDate | 2011 |
| publisher | IRGWP |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | unimas-160342021-07-05T14:34:41Z http://ir.unimas.my/id/eprint/16034/ Laboratory study of toxicity or tolerance of CCA preservative and heavy metal constituents copper, chromium and arsenic to Malaysian tropical fungi Wong, Andrew H.H Venas, Thomas Mark Morsing, Niels Tan, Clarence C.L. Chong, Peter Kian Fui GE Environmental Sciences SB Plant culture CCA preservative and its constituent heavy metal tolerance and toxicity to 3 Malaysian isolates Phialophora fastigiata (soft rot fungus), Paecilomyces variotii (mould fungus) and an unidentified white rot Basidiomycete, was investigated by the modified ‘Strange-Smith’ agarwell- plate technique with 1.6% CCA concentration and the malt-agar-plate bioassay technique with a range of CCA and constituent metal salt concentrations of 0.0024 – 5%m/m. Daily linear hyphal extension was measured between 6 and 22 days depending on relative fungal growth rates. The slow growing Phialophora fastigiata sustained mean daily hyphal growth (mm) at relatively higher concentrations of CCA preservative (toxic limits: 0.24 – 0.48%m/m) and their heavy metal constituents (copper-salt: 5.0 – 10.0%m/m; chromium-salt: 0.076 – 0.24%m/m) than the faster growing mould isolate Paecilomyces variotii (CCA: 0.019 – 0.076%m/m; chromiumsalt: 0.076 – 0.24%m/m) and the white rot Basidiomycete of intermediate growth rate (CCA: 0.076 – 0.24%m/m; copper-salt: 0.076 – 0.24%m/m; chromium-salt: 0.0095 – 0.019%m/m) except for arsenic-salt (Phialophora fastigiata: 0.076 – 0.24%m/m; Paecilomyces variotii: 0.48 – 0.95%m/m; Basidiomycete: 0.24 – 0.48%m/m). The results showing varying efficacies (toxicity versus tolerance) in vitro of CCA and their metal constituents between these fungi can have implications to ground-contact wood protection capabilities of CCA. IRGWP 2011 Article PeerReviewed text en http://ir.unimas.my/id/eprint/16034/1/Venas.pdf Wong, Andrew H.H and Venas, Thomas Mark and Morsing, Niels and Tan, Clarence C.L. and Chong, Peter Kian Fui (2011) Laboratory study of toxicity or tolerance of CCA preservative and heavy metal constituents copper, chromium and arsenic to Malaysian tropical fungi. International Research Group on Wood Protection. ISSN 2000-8953 https://www.researchgate.net/publication/291831599 |
| spellingShingle | GE Environmental Sciences SB Plant culture Wong, Andrew H.H Venas, Thomas Mark Morsing, Niels Tan, Clarence C.L. Chong, Peter Kian Fui Laboratory study of toxicity or tolerance of CCA preservative and heavy metal constituents copper, chromium and arsenic to Malaysian tropical fungi |
| title | Laboratory study of toxicity or tolerance of CCA preservative and heavy metal constituents copper, chromium and arsenic to Malaysian tropical fungi |
| title_full | Laboratory study of toxicity or tolerance of CCA preservative and heavy metal constituents copper, chromium and arsenic to Malaysian tropical fungi |
| title_fullStr | Laboratory study of toxicity or tolerance of CCA preservative and heavy metal constituents copper, chromium and arsenic to Malaysian tropical fungi |
| title_full_unstemmed | Laboratory study of toxicity or tolerance of CCA preservative and heavy metal constituents copper, chromium and arsenic to Malaysian tropical fungi |
| title_short | Laboratory study of toxicity or tolerance of CCA preservative and heavy metal constituents copper, chromium and arsenic to Malaysian tropical fungi |
| title_sort | laboratory study of toxicity or tolerance of cca preservative and heavy metal constituents copper, chromium and arsenic to malaysian tropical fungi |
| topic | GE Environmental Sciences SB Plant culture |
| url | http://ir.unimas.my/id/eprint/16034/ http://ir.unimas.my/id/eprint/16034/ http://ir.unimas.my/id/eprint/16034/1/Venas.pdf |