In vitro Micropropagation of Water Lettuce (Pistia stratiotes L.) via Direct Organogenesis
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초록
Water lettuce (Pistia stratiotes L.) is a free-floating perennial herbaceous plant with rosette leaves and a stem. Although this plantmultiplies and has adverse effects on aquatic ecosystems, it can be used for biological purification of polluted water and productionof valuable substances as a traditional medicine. In this study, we report a protocol to establish an in vitro micropropagation methodbased on direct shoot organogenesis from stem explants. In media comprising two types of basal medium and different growth regulators,multiple shoot organogenesis was observed on stems. The micropropagation method was most effective on Schenk and Hildebrandt (SH)medium with 1 mg/L indole-3-acetic acid and 2 mg/L 6-benzylaminopurine supplemented with 30 g/L sucrose, on which all explantsproduced multiple shoots. The shoots rooted spontaneously on solid half-strength Murashige and Skoog (MS) and SH media withoutgrowth regulators (1/2MSO and 1/2SHO). However, roots developed more vigorously in liquid media. Regenerated plants colonized andgrew more rapidly in SH basal medium than in MS basal medium and produced 6–8 stolons within 2 weeks on 1/2SHO. In summary,we established a method for micropropagation in vitro through direct organogenesis of water lettuce, which shows the potential of waterlettuce as a model aquatic plant for phytochemical and pharmacological research.
Abstract
Water lettuce (Pistia stratiotes L.) is a free-floating perennial herbaceous plant with rosette leaves and a stem. Although this plantmultiplies and has adverse effects on aquatic ecosystems, it can be used for biological purification of polluted water and productionof valuable substances as a traditional medicine. In this study, we report a protocol to establish an in vitro micropropagation methodbased on direct shoot organogenesis from stem explants. In media comprising two types of basal medium and different growth regulators,multiple shoot organogenesis was observed on stems. The micropropagation method was most effective on Schenk and Hildebrandt (SH)medium with 1 mg/L indole-3-acetic acid and 2 mg/L 6-benzylaminopurine supplemented with 30 g/L sucrose, on which all explantsproduced multiple shoots. The shoots rooted spontaneously on solid half-strength Murashige and Skoog (MS) and SH media withoutgrowth regulators (1/2MSO and 1/2SHO). However, roots developed more vigorously in liquid media. Regenerated plants colonized andgrew more rapidly in SH basal medium than in MS basal medium and produced 6–8 stolons within 2 weeks on 1/2SHO. In summary,we established a method for micropropagation in vitro through direct organogenesis of water lettuce, which shows the potential of waterlettuce as a model aquatic plant for phytochemical and pharmacological research.
참고문헌 (22)
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