Mating behaviour, mycelial antagonism and the establishment of individuals in Stereum hirsutum

Coates, D.; Rayner, A. D. M.; Todd, N.K.

doi:10.1016/s0007-1536(81)80007-1

Cited by 50 publications

(21 citation statements)

References 8 publications

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“…It has been suggested that mating between the primary mycelia of outcrossing species is permitted by the suppression of the somatic incompatibility mechanisms which prevent successful hyphal fusions between secondary mycelia (Coates et at., 1981). It is possible that some form of heterokaryosis can occur between genetically distinct mycelia of homomictic species during the short period of time when the young mycelium is undergoing autodikaryosis.…”

Section: Discussionmentioning

confidence: 99%

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: Discussionmentioning

confidence: 99%

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

Griffith

Hedger

1994

Heredity

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“…Moreover, all non-self sibling interactions differed from self-pairings, producing a range of reactions including the mating-compatible, 'bow-tie' and mutual rejection responses originally identified by Coates et al (1981). The same range of interactions were observed when members of this progeny set were paired with F2 testers, allowing them to be assigned to Cl and C2 mating-types.…”

Section: Morphology Of Interactionsmentioning

confidence: 89%

“…The F2 and EPl tester strains were paired in all combinations to confirm their mating-type designations using the criteria of Coates et al, (1981). Two to nine strains representing each of the four tester mating types were selected and paired against the F2.4t/EP1.7, F2.4/EP1.7 and half (strains 1-40) of the F2.4t, tip 3 progeny sets.…”

Section: Profyeny Analysismentioning

confidence: 99%

Investigation of genetic transfer between strains of the basidiomycete, Stereum hirsutum, using molecular and morphological criteria

Beeching¹,

Ainswirth²,

Broxholme³

et al. 1989

New Phytologist

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S U M AI A R ^•Pairings between strains of Stereum hirsutum (Willd. ex Fr.) S. F. Grav nn 2",, ti-iult agar were analysed using cbanfjes it-i tnycelial morphology at-id not-i-sclt recogtiitiot-i properties as evidence of genetic tratisfer between the participants. In some eon-ihinatiotis the t-iiorphologieal evidence suggested the utiiforn-i emergence of a beterokaryoti tollowitig tiiHtitig at-id reciprocal t-iuclear migration between two compatible hotTiokaryotis. In other combinations there was evidence of strongly selective invasion by one of two nuclear types frotii a heterokaryon into a homokaryon, and in a third type of pairing there was e\-idence for acquisition b>-a homokaryon of a second mating type but not an entire nuclear getiome.Combinations representing each of these three apparent classes of genetic transfer were selected, and r-t-i\-ceha grown from single hyphal tips and/or basidiospores taken either from pure cultures of the progenitor strains or from subeultures from interacting colonies. The DNA from each of these mycelia was extracted and analysed using restriction fragment let-igth polymorphisms to detect genon-iic differerices between straitis. The results were consistent with the interpretation of events based on morpliological criteria. The cotnbination of morphological and molecular approaches holds considerable potential for rapid, yet precise investigation of genetic exchange between fungal strains isolated from natural populations which have not been the subject of extensi\-e genetic analysis by classical meatis.

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“…turned out to be bipolar, in spite of clamped primary mycelia. The distinction between homo-and heterokaryotic mycelia in these species can be made on the basis of the mycelial morphology (Coates et al 1981, Boddy & Rayner 1982, Rayner & Turton 1982.…”

Section: Discussionmentioning

confidence: 99%

“…It often occurs together with holocoenocytic nuclear behaviour (multinucleate cells in primary and secondary mycelia). Of course, it is not a sure proof of homothallism, and the existence of clamp connections in homokaryotic mycelia of a heterothallic species has recently been demonstrated in a species of Coprinus (Kemp 1980), and in some species of Stereum (Coates et al 1981, Boddy & Rayner 1982, Rayner & Turton 1982.…”

mentioning

confidence: 99%

The sexuality of Phlebiopsis gigantea

Korhonen¹,

Kauppila²

1987

Karstenia

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Mating behaviour, mycelial antagonism and the establishment of individuals in Stereum hirsutum

Cited by 50 publications

References 8 publications

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

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

Investigation of genetic transfer between strains of the basidiomycete, Stereum hirsutum, using molecular and morphological criteria

The sexuality of Phlebiopsis gigantea

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