New Perkinsea Parasitoids of Dinoflagellates Distantly Related to Parviluciferaceae Members.
New Perkinsea Parasitoids of Dinoflagellates Distantly Related to Parviluciferaceae Members.
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DOI：
10.3389/fmicb.2021.701196
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发表时间：
2021
影响因子：
5.2
通讯作者：
Garcés E
中科院分区：
文献类型：
--
作者：
Reñé A;Alacid E;Gallisai R;Chambouvet A;Fernández-Valero AD;Garcés E
珀金海是一个原生动物的系统发育群，其中包括远亲宿主的寄生虫。然而，其多样性仍然主要由环境序列组成，主要来自淡水环境。分离和培养甲藻寄生蜂的努力已经导致了几个与系统发育密切相关的物种的描述，这些物种组成了细毛菌科。在这项研究中，报告了两个新的寄生种类，在反复的沿海水华期间感染甲藻。根据核糖体RNA(RRNA)基因的系统发育，我们发现这两个基因都聚集在PerkinSea内，其中一个位于小豆科的底部，另一个位于与其他描述物种无关的不同的分支中。后者的寄主-寄生虫实验室培养的建立使其能够进行形态特征描述，从而正式描述了黑斑潜蝇的基因。Nov.，sp.11月这两种寄生蜂的生活史发育一般与细毛虫科的其他成员相同，但它们在营养体期和孢子体阶段的特征不同，包括游动孢子在成熟孢子囊阶段的排列，以及缺乏将游动孢子释放到环境中的专门结构。实验室交叉感染实验表明，寄生蜂的寄主范围仅限于甲藻，尽管它横跨几个不同的属。在供试寄主种群中达到的最大流行率低于其他细毛兰科植物。这项研究的发现表明，感染甲藻的珀金海代表比之前认为的更广泛。
Perkinsea is a phylogenetic group of protists that includes parasites of distantly related hosts. However, its diversity is still mainly composed of environmental sequences, mostly obtained from freshwater environments. Efforts to isolate and culture parasitoids of dinoflagellates have led to the description of several phylogenetically closely related species constituting the Parviluciferaceae family. In this study, two new parasitoid species infecting dinoflagellates during recurrent coastal blooms are reported. Using the ribosomal RNA (rRNA) gene phylogenies, we show that both cluster within Perkinsea, one of them at the base of Parviluciferaceae and the other in a distinct branch unrelated to other described species. The establishment of host-parasite lab cultures of the latter allowed its morphological characterization, resulting in the formal description of Maranthos nigrum gen. nov., sp. nov. The life-cycle development of the two parasitoids is generally the same as that of other members of the Parviluciferaceae family but they differ in the features of the trophont and sporont stages, including the arrangement of zoospores during the mature sporangium stage and the lack of specialized structures that release the zoospores into the environment. Laboratory cross-infection experiments showed that the parasitoid host range is restricted to dinoflagellates, although it extends across several different genera. The maximum prevalence reached in the tested host populations was lower than in other Parviluciferaceae members. The findings from this study suggest that Perkinsea representatives infecting dinoflagellates are more widespread than previously thought.
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影响因子：
2.5
作者：
Garces, Esther;Alacid, Elisabet;Figueroa, Rosa I.
通讯作者：
Figueroa, Rosa I.
影响因子：
3.2
作者：
GIOVANNONI, SJ;DELONG, EF;PACE, NR
通讯作者：
PACE, NR
影响因子：
2.2
作者：
Coats, DW
通讯作者：
Coats, DW
DOI：
10.1073/pnas.1500163112
发表时间：
2015-08-25
影响因子：
11.1
作者：
Chambouvet, Aurelie;Gower, David J.;Richards, Thomas A.
通讯作者：
Richards, Thomas A.
影响因子：
4.2
作者：
Chambouvet A;Berney C;Romac S;Audic S;Maguire F;De Vargas C;Richards TA
通讯作者：
Richards TA