Callus cultures from shoot tips of mature Scots pine (Pinus sylvestris L.) were characterized
by rapid browning and an inability to regenerate. The peroxidase (POD) and polyphenol …

Visible browning is a typical feature of callus cultures derived from shoot tips of mature Scots
pine (Pinus sylvestris L.). Because the ability of callus to regenerate is low, we determined …

Tissue browning seriously decreases in vitro regeneration from callus cultures in some of
woody plants, especially plant regeneration via organogenesis in pine species. Although …

Plant tissue necrosis and subsequent cell death are usually observed during in vitro
regeneration in conifers, especially in plant regeneration via somatic organogenesis in pine …

The effects of season and cold storage on morphogenic competence in mature Pinus
sylvestris buds were investigated. Peroxidase and polyphenol oxidase activity were …

Peroxidase activity and isoenzymes of fresh wood samples of the third shoot of 12-year old
trees and from the sapwood, transition zone and heartwood of c. 60-year old stems of Scots …

The objective of the present study was to investigate the correlation of soluble apoplastic
peroxidase activity with lignification in needles of field-grown Norway spruce (Picea abies …

Callus tissues originating from buds of mature Scots pine (Pinus sylvestris L.) trees exhibit
the typical problem of browning, which leads to degeneration and death of the tissues. The …

A major obstacle to tissue culture of pistachio is the browning of explants, which is usually
attributed to phenolic compounds being oxididied to highly toxic quinone compounds by …

Abstract Peroxidase active against 2, 2′-azino-bis-[3-ethylbenzthiazoline-6-sulphonic
acid](ABTS) and guaiacol were found in the apoplastic fluid, as well as ionically and …