Fletcher Kyle, Uljević Ante, Tsirigoti Amerssa, Antolić Boris, Katsaros Christos, Nikolić Vedran, van West Pieter, Küpper Frithjof C
Oceanlab, University of Aberdeen, Newburgh, AB41 6AA, UK.
Dis Aquat Organ. 2015 Nov 17;117(1):45-57. doi: 10.3354/dao02930.
A new geographic record of the oomycete Olpidiopsis feldmanni infecting the tetrasporophytic stage of the red alga Asparagopsis sp. from the Adriatic Sea, confirmed through morphological identification, allowed us to expand previous observations of this organism. Ultrastructural investigations of environmental material showed a large central vacuole and a cell wall thicker than previously reported from other basal oomycete pathogens of algae. Phylogenetic analysis closely associates O. feldmanni to O. bostrychiae concurrent with structural observations. This constitutes the first genetic characterisation of an Olpidiopsis species that was initially described before 1960, adding to the genetic data of 3 other marine Olpidiopsis species established and genetically characterised in the last 2 decades. The paper discusses concurrences of the ultrastructural observations made here and in previous studies of the marine Olpidiopsis species with those made on the freshwater species.
通过形态学鉴定确认了卵菌纲的费氏油壶菌（Olpidiopsis feldmanni）感染来自亚得里亚海的红藻石花菜属（Asparagopsis sp.）四分孢子体阶段的一个新地理记录，这使我们能够扩展对该生物体的先前观察。对环境样本的超微结构研究显示，其具有一个大的中央液泡和一层比先前报道的其他藻类基部卵菌病原体更厚的细胞壁。系统发育分析将费氏油壶菌与博氏油壶菌（O. bostrychiae）紧密联系在一起，同时还有结构观察结果。这是对一个最初在1960年之前被描述的油壶菌物种的首次遗传特征描述，为过去20年中建立并进行遗传特征分析的其他3种海洋油壶菌物种的遗传数据增添了内容。本文讨论了此处以及先前对海洋油壶菌物种的研究中所做的超微结构观察与对淡水物种所做观察的一致性。
