The current stage of knowledge concerning regulation of floral abscission zone differentiation and functioning in Lupinus luteus
Emilia Wilmowicz
*@umk.plKatedra Fizjologii Roślin i Biotechnologii, Uniwersytet Mikołaja Kopernika w Toruniu (Poland)
Agata Kućko
Katedra Fizjologii Roślin i Biotechnologii, Uniwersytet Mikołaja Kopernika w Toruniu (Poland)
Katarzyna Marciniak
Katedra Fizjologii Roślin i Biotechnologii, Uniwersytet Mikołaja Kopernika w Toruniu (Poland)
Aleksandra Gadzikowska
Katedra Fizjologii Roślin i Biotechnologii, Uniwersytet Mikołaja Kopernika w Toruniu (Poland)
Krzysztof Przedniczek
Katedra Fizjologii Roślin i Biotechnologii, Uniwersytet Mikołaja Kopernika w Toruniu (Poland)
Jan Kopcewicz
Katedra Fizjologii Roślin i Biotechnologii, Uniwersytet Mikołaja Kopernika w Toruniu (Poland)
Abstract
The activity of abscission zone (AZ) determines the separation of organs from plant body. In L. luteus floral AZ develops at the base of the pedicel. Changes observed at the cellular level are correlated with fluctuations in BLADE-ON-PETIOLE (LlBOP) expression. The mRNA content of this gene is regulated by phytohormonal stimulators of flower separation — ethylene (ET) and abscisic acid (ABA) — suggesting that LlBOP is involved not only in the AZ differentiation, but also further stages of its functioning. Abscisic acid causing an accumulation of transcripts of genes, encoding ethylene biosynthesis enzymes (synthase and oxidase of 1-aminocyclopropano-1carboxylic acid, ACC), and at the same time increasing the level of ethylene precursor, indirectly regulates the time of flower separation in L. luteus.
Keywords:
abscisic acid, abscission zone, ethylene, lupin, organ abscission, phytohormonesReferences
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Authors
Emilia Wilmowicz*@umk.pl
Katedra Fizjologii Roślin i Biotechnologii, Uniwersytet Mikołaja Kopernika w Toruniu Poland
Authors
Agata KućkoKatedra Fizjologii Roślin i Biotechnologii, Uniwersytet Mikołaja Kopernika w Toruniu Poland
Authors
Katarzyna MarciniakKatedra Fizjologii Roślin i Biotechnologii, Uniwersytet Mikołaja Kopernika w Toruniu Poland
Authors
Aleksandra GadzikowskaKatedra Fizjologii Roślin i Biotechnologii, Uniwersytet Mikołaja Kopernika w Toruniu Poland
Authors
Krzysztof PrzedniczekKatedra Fizjologii Roślin i Biotechnologii, Uniwersytet Mikołaja Kopernika w Toruniu Poland
Authors
Jan KopcewiczKatedra Fizjologii Roślin i Biotechnologii, Uniwersytet Mikołaja Kopernika w Toruniu Poland
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