SELECTION OF EXTRANUCLEAR MUTANTS OF NEUROSPORA CRASSA | Zendy

Emiko Y. Rosenberg | Zendy; Christina T. Mora | Zendy; David L. Edwards | Zendy

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SELECTION OF EXTRANUCLEAR MUTANTS OF NEUROSPORA CRASSA

Author(s) -

Emiko Y. Rosenberg,

Christina T. Mora,

David L. Edwards

Publication year - 1976

Publication title -

genetics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.792

H-Index - 246

eISSN - 1943-2631

pISSN - 0016-6731

DOI - 10.1093/genetics/83.1.11

Subject(s) - neurospora crassa , biology , mutant , heterokaryon , genetics , neurospora , mitochondrial dna , crassa , mitochondrion , gene

A procedure is described that produces primarily extranuclear mutants of Neurospora crassa. An analysis of five mutants, [cni-3], [cni-4], [rsp-2], [rsp-3], [rsp-4] is presented. All five mutants segregate in an extranuclear manner. They can be assorted into two classes based on their respiratory properties: (1) those with cyanide-insensitive respiration (cni); (2) those with slow respiration (rsp). All of the mutants are female sterile. The respiratory trait can be placed in different nuclear backgrounds by heterokaryotic transfer. The abnormal respiratory traits are observed in mitochondria isolated from the mutants and it is likely that the mutations are in mitochondrial DNA.

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