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Worlwide and caribbean invasion history of the banana emergent Mycosphaerella fijiensis pathogen

Robert S., Abadie C., Zapater M.F., Roussel V., Pignolet L., Ravigné V., Carlier J.. 2013. In : eds. Borges A.L. , Lichtemberg L. Proceedings of the 20th international meeting ACORBAT: 40 years sharing science and technology, Fortaleza, Brazil, 9-13 september 2013. s.l. : s.n., p. 296-296. Reunion internacional ACORBAT 2013. 20, 2013-09-09/2013-09-13, Fortaleza (Brésil).

Reconstructing invasion routes is a key step towards understanding the ecological and evolutionary fa ctors underlying the worldwide invasion success of Mycosphaerella fijiensis, responsible of Black leaf streak disease of bananas. G enetic studies based on molecular analyses with neutral markers (microsatellites and sequence-based markers) were set up on a worldwide collection constituted by 735 individuals from 37 countries and on a Caribbean collection of 1800 individuals from 30 countries. Anal yses designated South-East Asia as the source of the global invasion and supported the location of the center of origin of M. fijiensis. It suggested human-mediated introductions into continents with a successful single introduction in Africa and multiple introductions followed by admixture in Latin- America. In the Caribbean, 2 invasion pathways was first suggested.

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