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首页> 外文期刊>Coral reefs: journal of the International Society for Reef Studies >A microsampling method for genotyping coral symbionts
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A microsampling method for genotyping coral symbionts

机译:珊瑚共生菌基因分型的微量采样方法

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摘要

Genotypic characterization of Symbiodinium symbionts in hard corals has routinely involved coring, or the removal of branches or a piece of the coral colony. These methods can potentially underestimate the complexity of the Symbiodinium community structure and may produce lesions. This study demonstrates that microscale sampling of individual coral polyps provided sufficient DNA for identifying zooxanthellae clades by RFLP analyses, and subclades through the use of PCR amplification of the ITS-2 region of rDNA and denaturing-gradient gel electrophoresis. Using this technique it was possible to detect distinct ITS-2 types of Symbiodinium from two or three adjacent coral polyps. These methods can be used to intensely sample coral-symbiont population/communities while causing minimal damage. The effectiveness and fine scale capabilities of these methods were demonstrated by sampling and identifying phylotypes of Symbiodinium clades A, B, and C that co-reside within a single Montastraea faveolata colony.
机译:在坚硬的珊瑚中共生菌共生体的基因型鉴定通常涉及取芯,或去除树枝或一片珊瑚菌落。这些方法可能会低估共生菌群落结构的复杂性,并可能产生病变。这项研究表明,对单个珊瑚息肉进行微量采样,可以提供足够的DNA来通过RFLP分析鉴定黄原虫进化枝,并通过PCR扩增rDNA的ITS-2区和变性梯度凝胶电泳来鉴定子囊虫。使用这种技术可以从两个或三个相邻的珊瑚息肉中检测出不同的ITS-2型共生菌。这些方法可用于对珊瑚共生生物种群/社区进行密集采样,同时将损害降至最低。通过采样和鉴定共存在于单个Montastraea faveolata菌落中的Symbiodinium进化枝A,B和C的系统型,证明了这些方法的有效性和精细规模。

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