Abstract
An efficient micropropagation protocol was developed for the medicinal plant Phyllanthus caroliniensis (Euphorbiaceae) using nodal segments for axillary shoot proliferation. Maximum multiplication (21–23 shoots per explant) was achieved on MS or AR media supplemented with either 5.0 μM BA, 1.25–5.0 μM kinetin or 2.5–5.0 μM 2iP. Rooting was achieved with 80–100% of the microshoots on MS medium without growth regulators, although 1.25 μM NAA and 1.25–5.0 μM IAA promoted significant increases in the number of roots per explant. Regenerated plants were successfully acclimatized and about 88% of plantlets survived under ex vitro conditions. Flowering was observed on in vitro grown plantlets and after 3–4 weeks of acclimatization. High frequency callus initiation and growth was achieved when nodal segment explants were inoculated in the vertical position on MS medium supplemented with 5.0 μM 2,4-D. Root cultures were successfully established on MS medium containing 1.1 μM NAA. The optimized micropropagation, callus and root culture protocols offer the possibility to use cell/root culture techniques for vegetative propagation and secondary metabolism studies.
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Catapan, E., Otuki, M.F. & Viana, A.M. In vitro culture of Phyllanthus caroliniensis (Euphorbiaceae). Plant Cell, Tissue and Organ Culture 62, 195–202 (2000). https://doi.org/10.1023/A:1006406806839
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DOI: https://doi.org/10.1023/A:1006406806839