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Electronic Journal of Biotechnology
Universidad Católica de Valparaíso
ISSN: 0717-3458
Vol. 9, No. 3, 2006, pp. 210-214
Bioline Code: ej06027
Full paper language: English
Document type: Research Article
Document available free of charge

Electronic Journal of Biotechnology, Vol. 9, No. 3, 2006, pp. 210-214

 en Bioactivity of Scytonema hofmanni check for this species in other resources (Cyanobacteria) in Lilium alexandrae check for this species in other resources in vitro propagation
Zaccaro, María Cristina; Kato, Adriana; Zulpa, Gloria; Storni, Mónica Magdalena; Steyerthal, Noemí; Lobasso, Karina & Stella, Ana María

Abstract

Cyanobacteria produces bioactive compounds including plant growth regulators. Naphthalene acetic acid (NAA), a toxic substance, is a synthetic plant regulator used in micropropagation. The aim of this work was to evaluate morphogenetic and antioxidant effects produced by intra and extracellular substances from Scytonema hofmanni check for this species in other resources (Cyanobacteria) during the multiplication in vitro of Lilium alexandrae check for this species in other resources and to compare them to those produced by NAA. Intra and extracellular cyanobacterial products increased a) bulblets production reaching 83% and 78% of NAA effect, respectively; b) the bulblet diameter compared to NAA; and c) the bulblet survival due to the promotion of antioxidant activity measured as catalase, ascorbate peroxidase, and glutathione reductase activity. The cyanobacterial substances stimulated regeneration and delayed bulblet senescence. They could replace NAA, dangerous for the operator, not only during the regeneration phase but also during the storage of the viable bulblets cultivated in vitro.

Keywords
ascorbate peroxidase, bioactive substances, bulb regeneration, catalase, Cyanobacteria, glutathione reductase, Lilium alexandrae, Scytonema hofmanni

 
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