Danish
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)
Journal of Experimental Botany 2011-Nov

Effects of abscisic acid on ethylene biosynthesis and perception in Hibiscus rosa-sinensis L. flower development.

Kun registrerede brugere kan oversætte artikler
Log ind / Tilmeld
Linket gemmes på udklipsholderen
Alice Trivellini
Antonio Ferrante
Paolo Vernieri
Giovanni Serra

Nøgleord

Abstrakt

The effect of the complex relationship between ethylene and abscisic acid (ABA) on flower development and senescence in Hibiscus rosa-sinensis L. was investigated. Ethylene biosynthetic (HrsACS and HrsACO) and receptor (HrsETR and HrsERS) genes were isolated and their expression evaluated in three different floral tissues (petals, style-stigma plus stamens, and ovaries) of detached buds and open flowers. This was achieved through treatment with 0.1 mM 1-aminocyclopropane-1-carboxylic acid (ACC) solution, 500 nl l(-1) methylcyclopropene (1-MCP), and 0.1 mM ABA solution. Treatment with ACC and 1-MCP confirmed that flower senescence in hibiscus is ethylene dependent, and treatment with exogenous ABA suggested that ABA may play a role in this process. The 1-MCP impeded petal in-rolling and decreased ABA content in detached open flowers after 9 h. This was preceded by an earlier and sequential increase in ABA content in 1-MCP-treated petals and style-stigma plus stamens between 1 h and 6 h. ACC treatment markedly accelerated flower senescence and increased ethylene production after 6 h and 9 h, particularly in style-stigma plus stamens. Ethylene evolution was positively correlated in these floral tissues with the induction of the gene expression of ethylene biosynthetic and receptor genes. Finally, ABA negatively affected the ethylene biosynthetic pathway and tissue sensitivity in all flower tissues. Transcript abundance of HrsACS, HrsACO, HrsETR, and HrsERS was reduced by exogenous ABA treatment. This research underlines the regulatory effect of ABA on the ethylene biosynthetic and perception machinery at a physiological and molecular level when inhibitors or promoters of senescence are exogenously applied.

Deltag i vores
facebook-side

Den mest komplette database med medicinske urter understøttet af videnskab

  • Arbejder på 55 sprog
  • Urtekurer, der understøttes af videnskab
  • Urtegenkendelse ved billede
  • Interaktivt GPS-kort - tag urter på stedet (kommer snart)
  • Læs videnskabelige publikationer relateret til din søgning
  • Søg medicinske urter efter deres virkninger
  • Organiser dine interesser og hold dig opdateret med nyhedsundersøgelser, kliniske forsøg og patenter

Skriv et symptom eller en sygdom, og læs om urter, der kan hjælpe, skriv en urt og se sygdomme og symptomer, den bruges mod.
* Al information er baseret på offentliggjort videnskabelig forskning

Google Play badgeApp Store badge