tailieunhanh - báo cáo khoa học: " Interactions between cauliflower and Rhizoctonia anastomosis groups with different levels of aggressiveness"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành y học dành cho các bạn tham khảo đề tài: Interactions between cauliflower and Rhizoctonia anastomosis groups with different levels of aggressiveness | BMC Plant Biology BioMed Central Research article Interactions between cauliflower and Rhizoctonia anastomosis groups with different levels of aggressiveness Joke Pannecoucque and Monica Hofte Address Laboratory of Phytopathology Faculty of Bioscience Engineering Ghent University Coupure Links 653 B-9000 Gent Belgium Email Joke Pannecoucque - Monica Hofte - Corresponding author Open Access Published 21 July 2009 Received 26 March 2009 BMC Plant Biology 2009 9 95 doi 1471-2229-9-95 Accepted 21 July 2009 This article is available from http 1471-2229 9 95 2009 Pannecoucque and Hofte licensee BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License http licenses by which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. Abstract Background The soil borne fungus Rhizoctonia is one of the most important plant pathogenic fungi with a wide host range and worldwide distribution. In cauliflower Brassica oleracea var. botrytis several anastomosis groups AGs including both multinucleate R. solani and binucleate Rhizoctonia species have been identified showing different levels of aggressiveness. The infection and colonization process of Rhizoctonia during pathogenic interactions is well described. In contrast insights into processes during interactions with weak aggressive or non-pathogenic isolates are limited. In this study the interaction of cauliflower with seven R. solani AGs and one binucleate Rhizoctonia AG differing in aggressiveness was compared. Using microscopic and histopathological techniques the early steps of the infection process the colonization process and several host responses were studied. Results For aggressive Rhizoctonia AGs R. solani AG 1-1B AG 1-1C AG 2-1 AG 2-2 Illb and AG 4 HGII a higher developmental rate was detected .