ITS polymorphism and taxonomy/phylogeny

Yves Bertheau bertheau at inapv.inapg.inra.fr
Wed Dec 3 12:47:40 EST 1997


Hello,

We are working on phytopathogenic enterobacteriaceae: the
pectinolytic erwinias and presently particularly on the pathovars
of Erwinia chrysanthemi.

We observe a size polymorphism, when we amplify by PCR the ITS
located between the 16 and 23S subunits of the rRNA.

Does anybody know references about such a polymorphism between
species but also more particularly between strains of a species?
Has such a polymorphism been correlated to infra-species divisions?

Thanking you in advance for your help.

Sincerely

		Yves Bertheau
		Pathologie vegetale
		INRA, Paris, FRANCE




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