Isolation and morphological identification of Phytophthora capsici the causal agent of foot rot disease on Piper nigrum L.

P. Lepun, . and M. S. H. Rahamath Bivi, . and Kamaruzaman Sijam, . and Siti Noor Farhana Md. Daut, . and A. Khairulmazmi, . (2011) Isolation and morphological identification of Phytophthora capsici the causal agent of foot rot disease on Piper nigrum L. [Proceedings Paper]

Phytophthora capsici is a pathogen of several economically important crops including pepper. The fungus attacks the roots stems leaves and fruit of the plant. In Piper nigrum plant P. capsici was the major disease causing slow decline and foot rot. Hence the purposed of this study to isolate and morphological characterisation of P. capsici the causal agent of foot rot disease on black pepper. The P. capsici was isolate from soil and root infected black pepper orchards in Belaga Sarawak. A serial soil dilution on Rose Bengal Agar RBA and baiting methods was use due to fungus isolation. The morphological study was observed using light microscope to observe their colony characteristic. The pathogenicity of P. capsici was test by leaves detached assay on leaves of black pepper. The results revealed that the fungus isolate has a characteristic of P. capsici with globulose oogonia chlamydospore. turolose mycelium and coducous sporangia with long pedicels. The disease severity on leaves detached assay the early symptoms on leave was reported on day 4 20 with low incidence. The high symptoms on leave were start on day 9 73 to 12 80 and highly symptoms on day 13 94 to 14 98. On leave detach assay test the leave symptoms showing fimbriation margins at the advancing edge of lesion. These results revealed that the isolate P. capsici was pathogenic to black pepper leaves. Therefore the isolate soilbrone fungus in these studies was P. capsici that cause foot rot disease and pathogenic to P. nigrum L.

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Abstract

Phytophthora capsici is a pathogen of several economically important crops including pepper. The fungus attacks the roots stems leaves and fruit of the plant. In Piper nigrum plant P. capsici was the major disease causing slow decline and foot rot. Hence the purposed of this study to isolate and morphological characterisation of P. capsici the causal agent of foot rot disease on black pepper. The P. capsici was isolate from soil and root infected black pepper orchards in Belaga Sarawak. A serial soil dilution on Rose Bengal Agar RBA and baiting methods was use due to fungus isolation. The morphological study was observed using light microscope to observe their colony characteristic. The pathogenicity of P. capsici was test by leaves detached assay on leaves of black pepper. The results revealed that the fungus isolate has a characteristic of P. capsici with globulose oogonia chlamydospore. turolose mycelium and coducous sporangia with long pedicels. The disease severity on leaves detached assay the early symptoms on leave was reported on day 4 20 with low incidence. The high symptoms on leave were start on day 9 73 to 12 80 and highly symptoms on day 13 94 to 14 98. On leave detach assay test the leave symptoms showing fimbriation margins at the advancing edge of lesion. These results revealed that the isolate P. capsici was pathogenic to black pepper leaves. Therefore the isolate soilbrone fungus in these studies was P. capsici that cause foot rot disease and pathogenic to P. nigrum L.

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Item Type:	Proceedings Paper
Additional Information:	Available at Perpustakaan Sultan Abdul Samad Universiti Putra Malaysia 43400 UPM Serdang Selangor Malaysia. QR22 M3I61 2011 vol.2 Call Number
AGROVOC Term:	Phytophthora capsici
AGROVOC Term:	Peronosporaceae
AGROVOC Term:	Piper nigrum
AGROVOC Term:	Black pepper
AGROVOC Term:	Orchards
AGROVOC Term:	Fungi
AGROVOC Term:	Fungal diseases
AGROVOC Term:	Isolation
AGROVOC Term:	Soil sampling
AGROVOC Term:	Distilled water
Geographical Term:	MALAYSIA
Depositing User:	Ms. Suzila Mohamad Kasim
Last Modified:	24 Apr 2025 05:15
URI:	http://webagris.upm.edu.my/id/eprint/12993

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