简介:Phaeodactylumtricornutumisoneoftheimportantmarinediatomsforoceanicprimaryproduction.Itsreproductionhasprofoundsignificanceinthelifecycle;however,thenuclearbehaviorduringitssexualreproductionwasnotclear.Inthisstudy,weobservedthenucleartransitionanddetermineditscorrelationwithcellconjunction.Itwasfoundthattwocellsjointedattheirapicesfirstandswungandalignedeachotherimmediately,andnucleusfromonecellwasabletotransferintoanotheroneduringcellconjugation.Thecellpairsconjugatedfornucleartransitionweredifferentfromthoseformedinmitosisinhypovalvethicknessandcellulararrangement.OurfindingsprovedtheexistenceofsexualreproductioninP.tricornutum.