Characterisation of Phytophthora capsici, Causal Agent of Phytophthora Foot Rot Disease of Piper nigrum L. in Sarawak, Malaysia
Phytophthora capsici causes Phytophthora foot rot disease on Piper nigrum. The pathogen lacks comprehensive study in Sarawak, Malaysia. In this study, P. capsici was isolated and characterised morphologically and molecularly from ten farms across three divisions in Sarawak. The pathogenicity of...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | en |
| Published: |
Taylor & Francis Group
2024
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| Subjects: | |
| Online Access: | http://ir.unimas.my/id/eprint/46036/3/Characterisation%20of.pdf http://ir.unimas.my/id/eprint/46036/ https://www.tandfonline.com/doi/full/10.1080/03235408.2024.2404675?src= https://doi.org/10.1080/03235408.2024.2404675 |
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| Summary: | Phytophthora capsici causes Phytophthora foot rot disease
on Piper nigrum. The pathogen lacks comprehensive study
in Sarawak, Malaysia. In this study, P. capsici was isolated
and characterised morphologically and molecularly from ten
farms across three divisions in Sarawak. The pathogenicity
of the isolates was confirmed, and distinct colony growth
patterns, sporangia morphologies, and radial growth rates
were observed across different media. Torulose hyphae
structures were consistently observed, and compatible mating types were present. Fifty-two isolates retrieved from this
study were genotyped using five Inter Simple Sequence
Repeats and three Random Amplified Microsatellites primers. The UPGMA tree showed a close relationship between
populations. A higher diversity within populations (73%)
than among populations (27%) was observed. This study
provides the first baseline data on the diversity of P. capsici in Sarawak, offering insights for managing the disease’s impact on pepper cultivation and the potential risk of increasing genetic diversity. |
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