Identification four new species of Pythium in Hamedan province

Subject Areas : دو فصلنامه تحقیقات بیماریهای گیاهی

P. Abad ¹ , D. Zafari ² , M. Mirabolfathi ³

1 - گروه گیاهپزشکی، دانشکده کشاورزی، دانشگاه بوعلی سینا، همدان، ایران (بخشی از یافت ههای پایان نامه کارشناسی ارشد نگارنده اول).
2 - گروه گیاهپزشکی، دانشکده کشاورزی، دانشگاه بوعلیسینا، همدان، ایران
3 - مؤسسه تحقیقات گیاهپزشکی کشور، تهران، ایران.

Received: 2013-11-05 Accepted : 2013-11-05 Published : 2013-09-23

Keywords: Pythium, Hamedan,

Abstract :

The Pythium species were studied in Hamedan province during 2007-2009. Samples were collected from various parts of the province including Hamedan, Nahavand, Malayer, Asadabad, Ghahavand, Touiserkan, Serkan, Razan and Joraghan. Species were identified based on morphological characters of sexual and asexual stages. Of the total of 150 isolates of Pythium recovered, the following 12species P. aphanidermatum, P. deliense, P. hydnosporum, P. irregulare, P. macrosporum, P. oligandrum, P. perplexum, P. pyrilobum, P. salinum, P. tracheiphilum, P. ultimum var ultimum and Pythium group G. were identified. Pythium group G was the dominant species, representing 28% of isolates. According to our knowledge this is probably the first report of isolation of Pythium hydnosporum from Plumbago europaea in the world, while P. hydnosporum, P. macrosporum, P. perplexum and P. pyrilobum are new records for mycoflora of Iran.

References:

1. Abbasi, M. and Aliabadi, F. 2009. The list of reported fungi in 12^th to 18^th Iranian Plant Protection Congress. Elm and Honar Publication. 272 pp.


2. Babai-Ahary, A., Abrinnia, M., and Majidi Heravan, I. 2004. Identification and pathogenicity of Pythium species causing damping-off in sugar beet in northwest Iran. Australasian Plant


3. Dick, M. W. 1990. Key to Pythium. U. K, ReadingUniversity Press.


4. Dick, M. W., and Ali-Shtayeh, M. S. 1986. Distribution and frequency of Pythium species in parkland and farmland soils. Transactions of the British Mycological Society 86: 49-62.


5. Khodashenas-Roodsari, M., Okhovvat, S.M., Mirabolfathi, M. and Kafi, 2008. M. Identification of Pythium species and their pathogenicity test on turfgrasses in Tehran province. 18^th Iranian Plant Protection Congress, 24-27 August, Hamedan, Iran.


6. Mostowfizadeh-Ghalamfarsa, R., and Banihashemi, Z. 2005. Identification of soil Pythium species in Fars Province of Iran. Iranian Journal of Science and Technology, Transaction A, Vol. 29, No. A1.


7. Paul, B. 1999. Pythium ornacarpum: a new species with ornamented oogonia isolated from soil in france. FEMS Microbiology Letters 180: 337-344.


8. Plaats-Niterink, A. J. Vander. 1981. Monograph of the genus Pythium. Studies in Mycology, Centraalbureau voor Schimmelcultures, Baarn 21: 1-242.


9. Pringsheim, N. 1858. Beitrage zur morphologie and systematik der algen. 2. Die Saprolegníeen. Jb. wíss. Bot. 1: 284-306.


10. Ravanlou, A. and Banihashemi, Z. 1998. Identification and pathogenicity of Pythium species isolated from wheat in Fars. 13^th Iranian Plant Protection Congress, 23-27 August, Karaj, Iran.


11. Waterhouse, G. M. 1967. Key to Pythium Pringsheim. Mycological Papers, Commonwealth Mycological Institute, Kew 109: 1-15.


12. Waterhouse, G. M. 1968. The genus Pythium Pringsheim. Mycological Papers, Commonwealth Mycological Institute, Kew 110: 1-71.


13. Zamani Noor, N., Minassian, V., Banihashemi, Z. and Mostowfizadeh Ghalamfarsa, R. 2004. Role of Pythium species on sugar beet root rot in Khuzestan province. 16^th Iranian Plant Protection Congress, 28 August-1 September, Tabriz, Iran.