Reference : Changes in peroxidase activity, and level of phenolic compounds during light-induced ...
Scientific journals : Article
Life sciences : Phytobiology (plant sciences, forestry, mycology...)
Changes in peroxidase activity, and level of phenolic compounds during light-induced plantlet regeneration from Eucalyptus camaldulensis Dehn. nodes in vitro
Arezki, Ouoimare [CRA Gembloux > biotechnologie > > >]
Boxus, Philippe [CRA Gembloux > Biotechnologie > > >]
Kevers, Claire mailto [Université de Liège - ULiège > Département des sciences de la vie > Biologie moléculaire et biotechnologie végétales >]
Gaspar, Thomas mailto [> > Botanique, radiobotanique & serres expér. >]
Plant Growth Regulation
Kluwer Academic Publishers
The Netherlands
[en] meristematic agglomerates ; micropropagation ; peroxidase ; phenols ; Eucalyptus
[en] Node cultures of Eucalyptus camaldulensis Dehn in Petri dishes in vitro under darkness in the presence of an auxin developed meristematic agglomerates (4 to 6 diameter), i.e. dense shoot clusters in which outgrowth of numerous successive buds is limited. Similar cultures under a 16 photoperiod produced small green plantlets with reduced leaves often presenting white hypertrophied lenticels and very short roots crowning the stem bases. The use of half-litre glass vials under light allowed direct development of well-developed rooted plantlets, either in the presence of the same auxin or in the presence of a cytokinin. Light favoured an increase in phenolic compounds and a reverse variation of peroxidase activity during the culture cycles. These aspects are discussed in terms of a possible regulation of the endogenous auxin level through a light control of peroxidase activity and the level of phenolic compounds.

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