Genetic Structure of Threatened Native Populations and Propagules Used for Restoration in a Clonal Species, American Beachgrass (Ammophila breviligulata Fern.)
Genetic Structure of Threatened Native Populations and Propagules Used for Restoration in a Clonal Species, American Beachgrass (Ammophila breviligulata Fern.)
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DOI：
10.1111/j.1526-100x.2007.00348.x
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发表时间：
2008-12-01
影响因子：
3.2
通讯作者：
Masi, Susanne
中科院分区：
文献类型：
--
作者：
Fant, Jeremie B.;Holmstrom, Rebecca M.;Masi, Susanne
乡土植物繁殖的一个重要目标是重建与乡土植物遗传相似的种群，从而增加成功建立和持续存在的可能性。我们研究了在五大湖的短唇沙草蕨类植物中实现这一目标的程度，一种被广泛用于栖息地恢复并被认为在研究区域受到威胁的海滩草物种。在密歇根湖和上级湖的平行研究中，我们使用多态性Intersimple Sequence Repeat标记，以评估完善的和新的本地种群，恢复种群，恢复繁殖从两个商业供应商之间的遗传相似性。本地人口普遍比预期的克隆物种更多样化，而商业化种植的版本是单型的。在明尼苏达州使用的商业版本之一是专门在恢复人口中发现，并没有发生在任何其他本地人口在这个网站。在伊利诺伊州新种植的恢复中使用的繁殖体来自商业供应商维持的释放，而不是选择的释放。在这一恢复的多样性相当于伊利诺伊州本地的人口，但是，许多基因型不是当地的起源。总的来说，研究强调了在恢复工作开始之前，特别是当种群受到威胁或濒危时，对残留的土著种群和恢复繁殖体进行基线遗传调查的重要性。
An important goal of native plant restorations was to reconstitute populations that are genetically similar to native ones, thereby increasing the probably of successful establishment and persistence. We examined the extent to which this goal has been accomplished in Great Lakes restorations of Ammophila breviligulata Fern., a beachgrass species that is widely used for habitat restoration and is considered threatened in the study areas. In parallel studies on Lake Michigan and Lake Superior, we used polymorphic Intersimple Sequence Repeat markers to assess genetic similarity between well-established and new native populations, restored populations, and restoration propagules obtained from two commercial suppliers. Native populations were generally more diverse than expected for a clonal species, whereas the commercially cultivated releases were monotypic. One of the commercial releases used in Minnesota was exclusively found in restored populations and did not occur in any other native population at this site. The propagules used in the newly planted restoration in Illinois were derived from a release that commercial suppliers maintain was derived from a native Michigan population, as opposed to a selected release. Diversity in this restoration was equivalent to that native Illinois' populations; however, many of the genotypes were not of local origin. Overall, study underscores the importance of obtaining baseline genetic surveys of remnant native populations and restoration propagules before restoration efforts are initiated, especially when the populations are threatened or endangered.