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Association of Fungi with Breadfruit (artocarpus Altilis Fosb.)

SHAMIM SHAMSI
Department of Botany, University of Dhaka, Dhaka-1000, Bangladesh

RAZIA SULTANA
Department of Botany, University of Dhaka, Dhaka-1000, Bangladesh

YASMIN FATEMA
Department of Botany, University of Dhaka, Dhaka-1000, Bangladesh

Abstract/ Executive Summary:

Nine species of fungi belonging to eight genera of Deuteromycetes were found associated with leaves and fruits of breadfruit, Artocarpus altilis. The fungi were Alternaria alternata (Fries) Keissler, Aspergillus niger Van Tiegh, Aspergillus flavus Link, Colletotrichum gloeosporioides (Penz.) Sacc, Curvularia lunata (Wakker) Boedijn., Penicillium sp. Pteroconium state of Apiospora camptospora Penz. & Sacc. and Spicaria sp., and Zygosporium oscheoides Mont.. This is the first report of association of A. alternata, C. gloeosporioides., Curvularia lunata, Penicillium sp. Pteroconium state of A. camptospora, Spicaria sp. and Z. oscheoides, with breadfruit. Colletotrichum gloeosporioides was the predominating fungus recorded on all infected matured leaves showing brown lesion and anthracnose symptom, and also pathogenic to breadfruit plant.

Keywords: Association, Fungi, Breadfruit, Artocarpus altilis

Location: Laboratory of Mycology and Plant Pathology, Department of Botany, University of Dhaka

Start Date: 15-03-2007

End Date: 13-10-2010

Program Area: Pest Management

Commodity: Diseases

Objectives:

The present work was undertaken to isolate and identify fungi associated with leaves and fruits of the plant.

Methodology:

In the present study 30 samples were examined from healthy and infected leaves and fruits of the plant from 15th March, 2007 to 13th October, 2010. Freshly collected samples were examined directly under microscope and the associated fungi were isolated following ‘Tissue planting’ and ‘Blotter’ methods on PDA medium between 25 and 28^oC at pH 6. The experiment was carried out in the Laboratory of Mycology and Plant Pathology, Department of Botany, University of Dhaka. Identification of the isolates was determined following standard literature (Benoit and Mathur 1970, Ellis 1971, 1976, Sutton 1980). The pathogenicity of all the isolated fungi were tested following modified detached leaf assay (Azad and Shamsi 2011). Moist chamber was prepared by placing small cotton bar at the corner of Petri plate and autoclaved. Leaves were cut into (252 mm) and washed with sterilized water. Inocula were sterilized with 10% Chlorox for 10 minutes and placed on Petri plates. Six treatments with three replications for each fungus was used as follows: T₁ - control (unpricked dorsally placed leaf pieces), T₂- control (unpricked ventrally placed leaf pieces), T₃- dorsally inoculated unpricked leaf pieces, T₄ - dorsally inoculated pricked leaf pieces, T₅ - ventrally inoculated unpricked leaf pieces and, T₆ - ventrally inoculated pricked leaf pieces.

Source of Information: Journal of Bangladesh Academy of Sciences, Vol. 36, No. 1, 143-146, 2012

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

Pathogenicity test following detached leaf inoculation assay revealed that C. gloeosporioides produced symptoms on both dorsally and ventrally pricked inoculated leaf pieces of breadfruit. Uninoculated and inoculated unpricked control leaf pieces did not produce any symptom. Present result also established that C. gloeosporioides was capable of causing infection on pricked leaves.

Knowledge Management: Journal