Microsoft Word - S-5. Shamsi.doc Bangladesh J. Plant Taxon. 15(1): 77-80, 2008 (June) © 2008 Bangladesh Association of Plant Taxonomists - Short communication TRICHOTHECIUM ROSEUM LINK - A NEW RECORD OF HYPHOMYCETOUS FUNGUS FOR BANGLADESH SHAMIM SHAMSI1 AND RAZIA SULTANA Department of Botany, University of Dhaka, Dhaka 1000, Bangladesh Keywords: Trichothecium roseum, Hyphomycetes, Bangladesh Recently, a study was undertaken to find out the association of fungi with infected chickpea (Cicer arietinum L.) plants grown in Bangladesh. During the isolation of fungi from the infected dried pod surface of chickpea, a hyphomycetous fungus Trichothecium roseum Link was found associated with the sample examined and the genus is a new record for Bangladesh. The fungus was isolated following “Tissue planting” method (CAB 1968) on PDA medium. Trichothecium roseum is the only species included in the genus Trichothecium. Trichothecium roseum has world-wide distribution. The fungus is mostly saprophytic or weakly parasitic (Barnett and Hunter 1972). The fungus was found as laboratory contaminant and previously recorded on felled trunks and fallen branches of Acer, Corylus, Fagus, Prunus, Quercus and Ulmus (Ellis and Ellis 1985). The fungus was also isolated from paddy field soil and pink rot infected apples (Subramanian 1971). The fungus was previously isolated from fruit surface of jute (Corchorus capsularis L.) by the first author, but was not reported. Therefore, this is the first record of association of T. roseum with chickpea as well as jute. The present description is based upon the sample isolated from chickpea. Trichothecium roseum Link (1809) (Plates 1-2) (Subramanian 1962, Ellis and Ellis 1985) Colonies effuse, at first white but soon turning rosy pink. Conidiophores up to 147 × 3.0-4.5 µm, hyaline, often slightly swollen at their tips. Conidia hyaline, pink in mass, 1- septate, thick-walled, each with a flattened protuberance at the base, 13.5-27.0 × 8-11 µm, often clustered. Specimens examined: Isolated from infected dried fruit surface of jute, Botanical Research Garden, Curzon Hall, University of Dhaka, Dhaka, S. Shamsi 167, 23 August 1998. Isolated from the infected dried pod surface of BARI Chola-3 (Cicer arietinum), Botanical Research Garden, Curzon Hall, University of Dhaka, Dhaka, R. Sultana 10, 30 November 2006. 1Corresponding author. E-mail: prof.shamsi@gmail.com 78 SHAMSI AND SULTANA Plate 1. Trichothecium roseum. A. Infected dried pods of chickpea (Cicer arietinum); B. Culture plate; C. Photomicrograph of the mycelia, conidiophores and conidia. (Bar = 20 µm) TRICHOTHECIUM ROSEUM LINK 79 Plate 2. Trichothecium roseum. Camera lucida drawings of the fungus: A. conidiophores; B. conidia. Acknowledgements The authors express their sincere thanks and gratitude to Prof. Md. Abul Hassan, Chairman, Department of Botany, University of Dhaka for providing all laboratory facilities to carry out the present research work. Special thanks are due to Prof. A.Z.M. Nowsher Ali Khan for his overall cooperation during the tenure of research and Prof. M.R. Khan of the same department for his suggestion, encouragement and help in microscopic and digital photography. 80 SHAMSI AND SULTANA References Barnett, H.L. and Hunter, B.B. 1972. Illustrated Genera of Imperfect Fungi. 3rd edition. Burgess Publishing Company, Minneapolis, Minnesota, pp. 1-241. CAB (Commonwealth Agricultural Bureau) 1968. Plant Pathologist’s Pocket Book. 1st edition. The Commonwealth Mycological Institute, Kew, Surrey, England, pp. 1-267. Ellis, M.B. and Ellis, J.P. 1985. Microfungi on Land Plants. Biddles Ltd., Guildford and Kings Lynn, Great Britain, pp. 1-818. Subramanian, C.V. 1962. A classification of the Hyphomycetes. Curr. Sci. 31: 409-411. Subramanian, C.V. 1971. Hyphomycetes. ICAR, New Delhi, pp. 1-930. (Manuscript received on 3 February 2008; revised on 24 April 2008)