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Gene control of developmental competence in Aspergillus nidulans☆

机译:构巢曲霉发育能力的基因控制☆

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ConidiaofAspergillusnidulansplacedinliquidnutrientmediumgerminatetoproducehyphaethatgrowforadayormoreasundifferentiatedcolonies.After20hrofgrowth,butnotbefore,suchcoloniesbecomeresponsivetoinductionanddevelopconidia-bearingstructures(conidiophores)afterbeingplacedontothesurfaceofmedia-saturatedmembranefilters.Thusthetimeatwhichthesecoloniesbecomedevelopmentallycompetentis20hr.Amutanthasbeenisolatedwhichisindistinguishablefromthewild-typestrainexceptthatitbecomescompetenttobeinduced2hrbeforethewild-typestrain.Atleastonegenecontrollingcompetencehasbeencharacterizedasachromosomalallele.Wehavethereforebeenabletomeasurethetimeatwhichagrowingcolonybecomesdevelopmentallycompetent,andhaveshownthatcompetenceisundergeneticcontrol.
机译:ConidiaofAspergillusnidulansplacedinliquidnutrientmediumgerminatetoproducehyphaethatgrowforadayormoreasundifferentiatedcolonies.After20hrofgrowth,butnotbefore,suchcoloniesbecomeresponsivetoinductionanddevelopconidia-bearingstructures(分生孢子)afterbeingplacedontothesurfaceofmedia-saturatedmembranefilters.Thusthetimeatwhichthesecoloniesbecomedevelopmentallycompetentis20hr.Amutanthasbeenisolatedwhichisindistinguishablefromthewild-typestrainexceptthatitbecomescompetenttobeinduced2hrbeforethewild-typestrain.Atleastonegenecontrollingcompetencehasbeencharacterizedasachromosomalallele.Wehavethereforebeenabletomeasurethetimeatwhichagrowingcolonybecomesdevelopmentallycompetent,andhaveshownthatcompetenceisundergeneticcontrol。

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