Secondarily homothallic Hymenomycetes: several examples of bipolarity are reinterpreted as being tetrapolar

Ginns, J.

doi:10.1139/b74-269

Cited by 16 publications

(4 citation statements)

References 13 publications

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“…Other investigations of basidiomycete outcrossing mechanisms have recorded similar observations e.g. (Macrae, 1967;Ginns 1974). Most common-B heterokaryons were found to be unstable and formed sectors corresponding to the component primary mycelia when subcultured.…”

Section: Gross Morphology Of Culturessupporting

confidence: 70%

The breeding biology of biotypes of the witches' broom pathogen of cocoa, Crinipellis perniciosa

Griffith

Hedger

1994

Heredity

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Investigation of the breeding biology of the agaric Crinipellis perniciosa (causal agent of witches' broom disease of cocoa in South America) found that two distinct breeding strategies exist among the four known biotypes of the fungus, which are specific to cocoa (C-biotype), solanaceous hosts (S-biotype), Bixa orellana (B-biotype) and liana vines (L-biotype). The homomictic (primary homothallic) behaviour of the C-biotype was confirmed and single basidiospore isolates (SSIs) of the S-biotype and B-biotype were found to behave in a similar manner. The mycelia of most SSIs of the L-biotype did not bear clamp connections and pairings between sibling SSIs established that an outcrossing mechanism under the control of two unlinked mating type factors was operating (i.e. bifactorial heterothallism). These matings also suggested that one of the mating factors has a twogene structure. The occurrence of bi-and trinucleate basidiospores and SSIs bearing true or false clamp connections suggests that the L-biotype exhibits a limited degree of secondary homothallism.

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Section: Gross Morphology Of Culturessupporting

confidence: 70%

The breeding biology of biotypes of the witches' broom pathogen of cocoa, Crinipellis perniciosa

Griffith

Hedger

1994

Heredity

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“…However, homokaryons have been obtained from aberrant three-and four-spored basidia and have been used to demonstrate the basic heterothallism of this species (Miller, 1971 ;Elliott, 1972). The mating data available are consistent with a unifactorial control of mating competence (Raper et a/., 1972;Miller & Kananen, 1972) although a reinterpretation of the data has been presented supporting a bifactorial control (Ginns, 1974). Homokaryons and heterokaryons are not morphologically distinct and both are multinucleate (Evans, 1959 ;Elliott, 197 1).…”

Section: Sexuality In Agaricusmentioning

confidence: 78%

“…On CYM the number of expected positive results scored as negative was high, but on charcoal-CYM a much more complete pattern of matings was revealed (Table 2). Assuming control by a single factor, the failure rate (Ginns, 1974), i.e. the number of expected positive matings scored as negative expressed as a percentage of the total positive matings, was reduced from 42 to 10%.…”

Section: Agaricus M Acrosporus (W 7)mentioning

confidence: 99%

Comparative Sexuality in Agaricus Species

Elliott¹

1978

Journal of General Microbiology

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“…bisporus is secondarily homothallic (ELLIOTT, 1972 ;RAPER et al ., 1972) and probably has a single multiallelic factor for mating-type (MILLER & KANANEN, 1972 ; . However, GINNS (1974) reinterpreted the early data and suggested a two-factor control of compatibility . The preponderance of self-fertile isolates which have nuclei of Table 1 .…”

Section: Breeding Systemmentioning

confidence: 99%