Flavonoid Accumulation Is Correlated with Adventitious Roots Formation in Eucalyptus gunnii Hook Micropropagated through Axillary Bud Stimulation | Zendy

P. Curir | Zendy; Christian F. VanSumere | Zendy; Agostino Termini | Zendy; Philippe Barthe | Zendy; Augusto Marchesini | Zendy; M. Dolci | Zendy

Open Access

Flavonoid Accumulation Is Correlated with Adventitious Roots Formation in Eucalyptus gunnii Hook Micropropagated through Axillary Bud Stimulation

Author(s) -

P. Curir,

Christian F. VanSumere,

Agostino Termini,

Philippe Barthe,

Augusto Marchesini,

M. Dolci

Publication year - 1990

Publication title -

plant physiology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.554

H-Index - 312

eISSN - 1532-2548

pISSN - 0032-0889

DOI - 10.1104/pp.92.4.1148

Subject(s) - axillary bud , auxin , biology , botany , annual growth cycle of grapevines , micropropagation , cutting , explant culture , stimulation , flavonoid , shoot , in vitro , biochemistry , antioxidant , neuroscience , gene

Eucalyptus gunnii Hook microcuttings, obtained in vitro through axillary bud stimulation, show different rooting responses on the same rooting medium depending on the physiological state induced by cytokinins used in the previous multiplication medium. 6-Furfurylamino purine and 6-(4-hydroxy-3-methylbut-2-enylamino)purine induced a physiological state characterized by high sensitivity of microcuttings to the rooting stimulus exerted by the auxin 3-indolebutyric acid, but N(6)-benzyladenine did not produce the same effect. The former physiological state was characterized by an increased accumulation of two endogenous flavonoids (identified as quercetin glycosides) which may be markers of a well defined physiological state. They could have some direct influence on the rooting processes of the explants cultivated in vitro.

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