Shalygin Sergei, Shalygina Regina, Johansen Jeffrey R, Pietrasiak Nicole, Berrendero Gómez Esther, Bohunická Markéta, Mareš Jan, Sheil Christopher A
Department of Biology, John Carroll University, University Heights, Ohio, 44118, USA.
Polar-Alpine Botanical Garden-Institute, Kola Science Center, Russian Academy of Science, Kirovsk-6, 184230, Russia.
J Phycol. 2017 Aug;53(4):762-777. doi: 10.1111/jpy.12542. Epub 2017 May 10.
Two populations of Rivularia-like cyanobacteria were isolated from ecologically distinct and biogeographically distant sites. One population was from an unpolluted stream in the Kola Peninsula of Russia, whereas the other was from a wet wall in the Grand Staircase-Escalante National Monument, a desert park-land in Utah. Though both were virtually indistinguishable from Rivularia in field and cultured material, they were both phylogenetically distant from Rivularia and the Rivulariaceae based on both 16S rRNA and rbcLX phylogenies. We here name the new cryptic genus Cyanomargarita gen. nov., with type species C. melechinii sp. nov., and additional species C. calcarea sp. nov. We also name a new family for these taxa, the Cyanomargaritaceae.
从生态特征不同且生物地理距离遥远的地点分离出了两类类似胶须藻属的蓝细菌。一类来自俄罗斯科拉半岛一条未受污染的溪流，另一类来自犹他州沙漠公园地带大阶梯-埃斯卡兰特国家纪念区的一处湿壁。尽管在野外和培养材料中，这两类蓝细菌与胶须藻几乎无法区分，但基于16S rRNA和rbcLX系统发育分析，它们在系统发育上与胶须藻属及胶须藻科都相距甚远。我们在此命名这个新的隐存属为蓝珠藻属（Cyanomargarita gen. nov.），模式种为梅氏蓝珠藻（C. melechinii sp. nov.），另有钙生蓝珠藻（C. calcarea sp. nov.）。我们还为这些分类单元命名了一个新科，即蓝珠藻科（Cyanomargaritaceae）。
