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首页> 外文期刊>Mycologia >Sharpening species boundaries in the Micarea prasina group, with a new circumscription of the type species M. prasina
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Sharpening species boundaries in the Micarea prasina group, with a new circumscription of the type species M. prasina

机译：磨削物种在Micraea prasina组中的界限，具有型普华氏型的新环节

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摘要

Micarea is a lichenized genus in the family Pilocarpaceae (Ascomycota). We studied the phylogeny and reassessed the current taxonomy of the M. prasina group. We focused especially on the taxonomic questions concerning the type species M. prasina and, furthermore, challenges concerning type specimens that are too old for successful DNA barcoding and molecular studies. The phylogeny was reconstructed using nuc rDNA internal transcribed spacer region (ITS1-5.8S-ITS2 = ITS), mitochrondrial rDNA small subunit (mtSSU), and replication licensing factor MCM7 gene from 31 species. Fifty-six new sequences were generated. The data were analyzed using maximum parsimony and maximum likelihood methods. The results revealed four undescribed, well-supported lineages. Three lineages represent new species described here as M. fallax, M. flavoleprosa, and M. pusilla. In addition, our results support the recognition of M. melanobola as a distinct species. Micarea fallax is characterized by a vivid to olive green thallus composed of aggregated granules and whitish or brownish apothecia sometimes with grayish tinge (Sedifolia-gray pigment).Micarea flavoleprosa has a thick, wide-spreading yellowish green, whitish green to olive green sorediate thallus and lacks the Sedifolia-gray pigmentation. The species is mostly anamorphic, developing apothecia rarely. Micarea melanobola is characterized by a pale to dark vivid green granular thallus and darkly pigmented apothecia (Sedifolia-gray). Micarea pusilla is characterized by a whitish green to olive green thinly granular or membranous thallus, numerous and very small whitish apothecia lacking the Sedifolia-gray pigment, and by the production of methoxymicareic acid. Micarea fallax, M. flavoleprosa, and M. melanobola produce micareic acid. The reliability of crystalline granules as a character for species delimitation was investigated and was highly informative for linking the old type specimen of M. prasina to fresh material.
机译：Micarea是西氏杀菌性的一种单层化的属植物（Ascomcota）。我们研究了系统发育，重新评估了目前普罗西纳集团的目前分类。我们特别专注于关于普拉西纳的类型的分类问题，此外，关于成功DNA条形码和分子研究的挑战。使用NUC RDNA内转录的间隔区（ITS1-5.8S-ITS2 = ITS），线粒体RDNA小亚基（MTSSU）和复制许可因子MCM7基因的重建系统发生，以及从31种的复制许可。生成五十六个新序列。使用最大分析和最大似然方法分析数据。结果揭示了四个未描述的，良好的血统。三个谱系代表此处描述的新物种作为M.Fallax，M.Flavoleprosa和M. pusilla。此外，我们的结果支持识别M. melanobola作为一种独特的物种。 Micarea Resalax的特征是由橄榄绿杀死的特征，由聚集颗粒组成，有时与灰色调（Sedifolia-灰色颜料）组成的橄榄绿色染色剂组成.micareaFlavoleProsa具有厚，宽敞的黄绿色，发白的绿色至橄榄绿色索迪亚德菌并且缺乏Sedifolia灰色的色素沉着。物种大多是无变态的，很少开发神经炎症。 Micarea melanobola的特征在于浅色至深色生动的绿色颗粒状晶粒和深色色素的症状（Sedifolia-Grey）。 Micarea pusilla的特征在于橄榄绿色颗粒状或膜质稀土，缺乏烟草灰色颜料的多种且非常小的发白的蛋白质，以及通过生产甲氧基酸酸的含量较多。 Micarea Resalax，M.Flavoleprosa和M.Melanobola产生米卡酸。研究了结晶颗粒作为物种划界的特征的可靠性，并对将M.Prasina的旧型样品连接到新鲜物质的高度信息。

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