Dutch
Albanian
Arabic
Armenian
Azerbaijani
Belarusian
Bengali
Bosnian
Catalan
Czech
Danish
Deutsch
Dutch
English
Estonian
Finnish
Français
Greek
Haitian Creole
Hebrew
Hindi
Hungarian
Icelandic
Indonesian
Irish
Italian
Japanese
Korean
Latvian
Lithuanian
Macedonian
Mongolian
Norwegian
Persian
Polish
Portuguese
Romanian
Russian
Serbian
Slovak
Slovenian
Spanish
Swahili
Swedish
Turkish
Ukrainian
Vietnamese
Български
中文(简体)
中文(繁體)
Plant Cell Reports 2007-Jun

Gene expression in opening and senescing petals of morning glory (Ipomoea nil) flowers.

Alleen geregistreerde gebruikers kunnen artikelen vertalen
Log in Schrijf in
De link wordt op het klembord opgeslagen
Tetsuya Yamada
Kazuo Ichimura
Motoki Kanekatsu
Wouter G van Doorn

Sleutelwoorden

Abstract

We isolated several senescence-associated genes (SAGs) from the petals of morning glory (Ipomoea nil) flowers, with the aim of furthering our understanding of programmed cell death. Samples were taken from the closed bud stage to advanced visible senescence. Actinomycin D, an inhibitor of transcription, if given prior to 4 h after opening, suppressed the onset of visible senescence, which occurred at about 9 h after flower opening. The isolated genes all showed upregulation. Two cell-wall related genes were upregulated early, one encoding an extensin and one a caffeoyl-CoA-3-O-methyltransferase, involved in lignin production. A pectinacetylesterase was upregulated after flower opening and might be involved in cell-wall degradation. Some identified genes showed high homology with published SAGs possibly involved in remobilisation processes: an alcohol dehydrogenase and three cysteine proteases. One transcript encoded a leucine-rich repeat receptor protein kinase, putatively involved in signal transduction. Another transcript encoded a 14-3-3 protein, also a protein kinase. Two genes have apparently not been associated previously with senescence: the first encoded a putative SEC14, which is required for Golgi vesicle transport, the second was a putative ataxin-2, which has been related to RNA metabolism. Induction of the latter has been shown to result in cell death in yeast, due to defects in actin filament formation. The possible roles of these genes in programmed cell death are discussed.

Word lid van onze
facebookpagina

De meest complete database met geneeskrachtige kruiden, ondersteund door de wetenschap

  • Werkt in 55 talen
  • Kruidengeneesmiddelen gesteund door de wetenschap
  • Kruidenherkenning door beeld
  • Interactieve GPS-kaart - tag kruiden op locatie (binnenkort beschikbaar)
  • Lees wetenschappelijke publicaties met betrekking tot uw zoekopdracht
  • Zoek medicinale kruiden op hun effecten
  • Organiseer uw interesses en blijf op de hoogte van nieuwsonderzoek, klinische onderzoeken en patenten

Typ een symptoom of een ziekte en lees over kruiden die kunnen helpen, typ een kruid en zie ziekten en symptomen waartegen het wordt gebruikt.
* Alle informatie is gebaseerd op gepubliceerd wetenschappelijk onderzoek

Google Play badgeApp Store badge