Endogenous Phytohormones in Spontaneously Regenerated Centaurium erythraea Rafn. Plants Grown In Vitro
2016
Autori:
Trifunović-Momčilov, MilanaMotyka, Václav
Dragićević, Ivana C.
Petrić, Marija
Jevremović, Slađana
Malbeck, Jiří
Holik, Josef
Dobrev, Petre I.
Subotić, Angelina
Tip dokumenta:
Članak u časopisu (Objavljena verzija)
,
© 2015, Springer Science+Business Media New York.
Metapodaci
Prikaz svih podataka o dokumentuApstrakt:
Phytohormones are important regulators of
numerous developmental and physiological processes in
plants. Spontaneous morphogenesis of the common centaury
(Centaurium erythraea Rafn.) is possible on nutrition
medium without addition of any plant growth
regulator depending solely on endogenous phytohormone
levels. Thus, this plant species represents a very good
model system for the investigation of numerous physiological
processes under phytohormonal control in vitro.
We analysed the total amount of endogenous cytokinins
(CKs) including the contents of their individual groups in
shoots and roots of C. erythraea plants grown in vitro. The
total amount of endogenous CKs was 1.4 times higher in
shoots than in roots. Inactive or weakly active N-glucosides
found to predominate in both organs of centaury
plants, whereas free bases and O-glucosides represented
only a small portion of the total CK pool. Consequently,
centaury roots showed higher IAA content as well as IAA/
free CK base ratios compared to shoots. Centaury tissues
also showed increased levels of ‘‘stress hormones’’. In
contrast to SA, considerably higher levels of ABA were
found in centaury shoots than in roots. Our results could
serve as a basis for understanding and elucidating spontaneous
de novo shoot organogenesis and further plant
regeneration of C. erythraea in vitro.
Ključne reči:
Common centaury; Root explants; Hormone metabolism; Cytokinins; Auxins; Plant development; Stress hormonesIzvor:
Journal of Plant Growth Regulation, 2016, 35, 2, 543-552Finansiranje / projekti:
- Biotehnologija in vitro - gajene, lekovite i ugrožene biljne vrste (RS-MESTD-Basic Research (BR or ON)-173015)
- Czech Science Foundation (P506/11/0774)
DOI: 10.1007/s00344-015-9558-x
ISSN: 0721-7595
WoS: 000376482300021
Scopus: 2-s2.0-84947742001
URI
https://link.springer.com/article/10.1007%2Fs00344-015-9558-xhttps://radar.ibiss.bg.ac.rs/handle/123456789/3381