Die Aufnahme von cAMP und seine Wirkungen auf den Kohlenhydrat- und Lipidstoffwechsel grüner Blätter

Abstract

SummaryWhen c.urp is red to green J)lant ti ss lles it is capable of entering cell s and is dcgraded 38 rapidly in isolatcd protopla sts ilS in intal't tissucs. Effcets of cAMP on ca rbohydrate storage are fount! when cOllccntra t ions execeding 8· 10-3 ~[are uscd; th c rate of COz-fixation is influenced by > 2· 10-4 )[ crUIP. No effeets on lipid fatty acid l'omposition und mctaboli sm could be cstablish~d, but, after a ppli cat ioll 01 > 4, 10-' ){ f AJIP, thc in corporat ion 01 P'C]+ucetutc into lipids is raised .tpproxi.mately by 88 %' Also, f rUf P lowen; tbc formation of leaf·n ecroses (':\Used by the detergcnt Tween ~O, All effects ea used by l'A~fP ('oulll also be obtained by feeding ö'·,UIP, therefore these effects art' non-spedfic and therc is HO indi ('a tion of a hormon e-mimiced effi cal'Y 01 the cyclic nucJ cotide, In most t ases a d istinct cffed neetl s a cA)l!' concentratioll bigher than 10 4 )[, and with r egarrl to the rapill uptake, it seems probable that it is duc tu an inflllem'c on thc adenylatc pool oi the cell.However, so me rather spcd fif (' :UIP effects descrilJed in th e literature cannot be intHpreted in such a mann er.Einleitung