Summary
The relationship between in vitro bulbification and peroxidase activities of garlic (Allium sativum L.) was studied. Two stages could be distinguished during in vitro bulb formation characterized by the peroxidase activity, isoenzymatic patterns especially of the soluble fractions, dry weight, and bulbification index (BI). The first stage, called the morphogenic stage, started after planting until 30d of culture with a maximum soluble peroxidase activity, BI=1–0.5 and low dry weight. At that time axillary buds preformed at the base of the leaves grew and the in vitro bulb was generated. The second stage (filling in and bulb maturation) started when the BI reached 0.5 at 30 d of the ontogenic cycle, as a result of the bulb assimilate accumulation phenomenon. During the morphogenic stage the soluble peroxidase activity was maximum and the zymograms showed higher intensity bands. The second stage presented anodic ionic peroxidases and substantial increase in staining of the anodic covalent peroxidase fraction. The putative role of the different isoforms of peroxidases in relation to the bulbification process is discussed.
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Goleniowski, M., Del Longo, O., de Forchetti, S.M. et al. Relationships between peroxidases and in vitro bulbification in garlic (Allium sativum L.). In Vitro Cell.Dev.Biol.-Plant 37, 683–686 (2001). https://doi.org/10.1007/s11627-001-0119-6
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DOI: https://doi.org/10.1007/s11627-001-0119-6