A Successful in vitro Propagation Technique for Resurrection Plants of the Selaginellaceae
文献类型： 外文期刊
作者： Yu, Rongpei 1 ; Baniaga, Anthony E. 2 ; Jorgensen, Stacy A. 2 ; Barker, Michael S. 2 ;
作者机构： 1.Yunnan Acad Agr Sci, Flower Res Inst, Kunming 650205, Yunnan, Peoples R China
2.Univ Arizona, Dept Ecol & Evolutionary Biol, Tucson, AZ 85721 USA
关键词： Selaginella;microgametophytes;megagametophytes;fertilization;sporelings
期刊名称：AMERICAN FERN JOURNAL （ 影响因子：0.857； 五年影响因子：0.974 ）
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收录情况： SCI
摘要： Resurrection plants of the Selaginellaceae are renowned for their ability to tolerate desiccation as well as the small size of their nuclear genomes. These traits position Selaginella as a promising model system to understand many aspects of plant evolution. However, there is not an established method for the laboratory cultivation of resurrection species of Selaginella. We explored methods of in vitro propagation for resurrection species of Selaginella and identified a set of successful techniques. Our in vitro propagation system included two main steps: surface-sterilized megaspores were cultured alone on C-Fern agar medium for three weeks, followed by the addition of surface-sterilized microspores to the germinated megaspore cultures for co-culture. Sporelings of Selaginella eremophila and S. rupincola were observed after 2-5 weeks of co-culture, and all sporelings survived. Our methods aim to further the interest and use of resurrection species of Selaginella for manipulative studies to better understand the biology of desiccation tolerance and their unique genome architecture.
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