Wyniki wyszukiwania - Biblioteka Nauki

Nowa wersja platformy, zawierająca wyłącznie zasoby pełnotekstowe, jest już dostępna.
Przejdź na https://bibliotekanauki.pl

Ograniczanie wyników

Znaleziono wyników: 2

Liczba wyników na stronie

Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych: endogenous abscisic acid

Sortuj według:

Ogranicz wyniki do:

Sucrose and cytokinin interactions in relation to ethylene and abscisic acid production in the regulation of morphogenesis in pelargonium x hortorum L.H. Bailey in vitro

100%

Wojtania A. , Wegrzynowicz-Lesiak E. , Dziurka M. , Waligorski P.

Acta Biologica Cracoviensia. Series Botanica

2015

tom 57

nr 1

The aim of the study was to determine the effect of exogenous sucrose and cytokinin on ethylene production and responsiveness in relation to the shoot formation of Pelargonium × hortorum 'Bergpalais' in vitro. Increasing the concentration of sucrose from 15 to 40 g L-1 in medium containing meta-topolin (mT) resulted in a two-fold decrease in the number of shoots and leaves as well as a reduction in ethylene production. The addition of ethylene synthesis inhibitor (AVG) to mT-medium significantly reduced the ethylene production and the shoot growth, but it had no significant influence on the shoot formation. The mT-induced shoot formation was, however, significantly reduced in the presence of ethylene action inhibitor (AgNO3), in a manner dependent on sucrose levels. At the end of the subculture period, increased sucrose concentrations (15–40 g L-1) in the presence of mT and AgNO3 resulted in a 3.7-fold increase in ethylene emission. At the same time, the supply of sucrose caused a 2.8-fold increase in the level of endogenous abscisic acid (ABA). Our results may suggest that the inhibitory effect of high sucrose concentration (30 and 40 g L-1) may depend on its influence on ethylene sensitivity. It also suggests that sucrose-regulation of the shoot formation of Pelargonium in vitro is mediated by ABA.

Regulation of gene expression by endogenous abscisic acid during plant water deficit

84%

Bray E. A. , Moses M. S. , Cohen A. , Shih T. Y. , Chung E. , Scippa G. S. , Chiatante D. , Imai R. , Plant A. , Griffiths A. , Morabito D. , Dizengremel P.

Biological Bulletin of Poznań. Supplement

1997

tom 34