Differential Effects of Sucrose, Abscisic Acid, and Benzyladenine on Shoot Growth and Callus Formation in the Abscission Zone of Excised Citrus Buds 1
Identifieur interne : 004895 ( Main/Exploration ); précédent : 004894; suivant : 004896Differential Effects of Sucrose, Abscisic Acid, and Benzyladenine on Shoot Growth and Callus Formation in the Abscission Zone of Excised Citrus Buds 1
Auteurs : Israel Giladi ; Arie Altman ; Raphael GorenSource :
- Plant Physiology [ 0032-0889 ] ; 1977.
Abstract
The omission of sucrose from the basal medium stimulated callus formation in bud explants of
The uptake of 14C-sucrose by bud explants was linear for at least 98 hr, and was enhanced significantly by both abscisic acid and benzyladenine during the initial 24-hour period. Abscisic acid enhanced the absorption of 14C-sucrose and the accumulation of sugars in buds cultured at high levels of sucrose. More than 50% of the total label accumulated in the callus of abscisic acid-treated explants whereas only 16 and 23% were observed in the growing shoots of control and cytokinin-treated explants, respectively.
Results suggested that while sucrose “starvation” induced initial callus formation, high levels retarded further proliferation of the callus.
Url:
PubMed: 16660013
PubMed Central: 542526
Affiliations:
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