Inheritance and alteration of transforming DNA during an induced parasexual cycle in the imperfect fungus Cladosporium fulvum.

Abstract:

:Protoplasts of a pAN7-1-transformed isolate of Cladosporium fulvum race 4, harbouring a tandem duplication of the vector, and an untransformed race 5 isolate were fused, without selection for the presence of vector sequences. Fusion products were allowed to haploidize spontaneously. The inheritance of pAN7-1 sequences and the expression of the hph gene was studied in 85 progeny. A very high proportion (80%) of the progeny contained vector sequences and 70% of the progeny were resistant to hygromycin. Inactivation of the hph gene occurred in eight progeny. Rearrangement of vector sequences can account for the inactivation: there is no evidence for any RIP-like mechanism. A number of novel bands were observed.

journal_name

Curr Genet

journal_title

Current genetics

authors

Arnau J,Oliver RP

doi

10.1007/BF00312643

subject

Has Abstract

pub_date

1993-05-01 00:00:00

pages

508-11

issue

5-6

eissn

0172-8083

issn

1432-0983

journal_volume

23

pub_type

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