tailieunhanh - Báo cáo lâm nghiệp: "Diversity of arbuscular mycorrhizal fungi in Tetraclinis articulata (Vahl) Masters woodlands in Morocco"

Tuyển tập các báo cáo nghiên cứu về lâm nghiệp được đăng trên tạp chí lâm nghiệp Original article đề tài:"Diversity of arbuscular mycorrhizal fungi in Tetraclinis articulata (Vahl) Masters woodlands in Morocco" | Ann. For. Sci. 63 2006 285- 291 INRA EDP Sciences 2006 DOI forest 2006007 285 Original article Diversity of arbuscular mycorrhizal fungi in Tetraclinis articulata Vahl Masters woodlands in Morocco Younes ABBASa Marc DUCOUSSOb Mohamed ABOUROUHa Rosario AZCÓNc Robin DUPONNOISb a Root Symbiosis Laboratory Sylviculture Department Centre of Forest Research BP 763 Agdal-Rabat Morocco b LStM UMR 113 Ta10J 34 398 Montpellier Cedex 5 France c Departemento de Microbiologia del Suelo y Sistemas Simbioticos Estacion Experimental del Zaidin CISC Profesor Albareda 1 18008 Granada Spain Received 14 February 2005 accepted 27 September 2005 Abstract - A survey of arbuscular mycorrhizal AM fungi was conducted in seven Tetraclinis woodlands. Microscopic analysis of the mycorrhizal status of T. articulata Vahl Masters roots revealed that all samples formed only AM and no ectomycorrhizal fungi were detected. The mycorrhizal colonisation level was generally high more than 80 thus reflecting the mycotrophic nature of T. articulata. A Paris-type mycorrhizal structure was noted in all studied samples. The number of AM fungal spores detected in field-collected soils was relatively high. All recovered spores belonged to the Glomineae order represented by Glomaceae and Acaulosporaceae families. Two groups were dominant the first one included small 90 pm hyaline white to dark-yellow spores and the second involved large 295 pm light orange to dark orangebrown spores. The morphological characters indicated that the spore populations consisted of 3-6 morphotypes. The Glomus genus was represented by five species . Glomus aggregatum Glomus constrictum Glomus sp. 1 Glomus sp. 2 and Glomus sp. 3 while the Acaulospora genus was represented by only one unidentified species. diversity tetraclinis woodlands Paris-type arbuscular mycorrhizae Glomus Acaulospora Résumé - Diversité des champignons mycorhiziens arbusculaires dans les forets de Tetraclinis articulata Vahl Masters au Maroc. La .