Cell size, nucleic acids, and synthetic efficiency in the wild type and a growth mutant of the multicellular alga Ulva mutabilis Føyn
[摘要] AtagivenlightintensitythewildtypeofthegreenmulticellularalgaUlvamutabilisFøyngrowsataslowerratethanthemutantSlender.ThemutantcontainsthesameoraslightlygreateramountofchlorophyllandRNAperunitDNAthanthewildtype,butmuchlessproteinandcellwall.Themutantandthewildtypeseemtoabsorbthesamepercentageoftheincidentlight,andthereseemstobenodifferenceintheefficiencywithwhichtheabsorbedenergyisutilized.TheamountofproteinandcellwallsynthesizedperunitDNA(≈percell)perdayisthesameinthemutantandthewildtype.Thefactthatthegenerationtimeofthemutantisshorterthanthegenerationtimeofthewildtypethusexplainsthedifferenceincellsize.TheamountofproteinsynthesizedperunittotalRNAperdayappearstobelessinthefast-growingmutantthanintheslow-growingwildtype.Thedatashowthattheproliferationrateofacellpopulationmayincreasewithoutacorrespondingincreaseintheamountorefficiencyofthemachineryresponsibleforincreaseofmass,andsupporttheideathattheSlendermutationmightbeinageneconcernedwiththecontroloftheprocessesthatprepareacellfordivision.
[发布日期] [发布机构]
[效力级别] [学科分类] 生物科学（综合）
[关键词] [时效性]
