European journal of protistology最新文献_第8页

Corrigendum to “Morphologic and molecular characterization of Apertospathula pilata n. sp., a novel freshwater spathidiid (Ciliophora Litostomatea) from Idaho USA” [Eur. J. Protistol. 89 (2023) 125990] 来自美国爱达荷州的一种新型淡水蜘蛛(Ciliophora Litostomatea)的形态和分子特征的勘误表[欧洲]。[j]中华医学杂志。89 (2023):125990]

IF 2.9 2区生物学

European journal of protistology Pub Date : 2023-08-01 DOI: 10.1016/j.ejop.2023.126011

William Bourland

引用次数: 0

Ciliates from the intestine of zoo-kept black rhinoceros, with immunofluorescence microscopic and molecular phylogenetic investigation of Rhinozeta rhinozeta (Litostomatea) 动物园饲养黑犀牛肠道纤毛的免疫荧光显微镜观察与分子系统发育研究

IF 2.9 2区生物学

European journal of protistology Pub Date : 2023-08-01 DOI: 10.1016/j.ejop.2023.126006

Olga A. Kornilova , Maria E. Belokon , Maria A. Skazina , Olga S. Alekseeva , Ludmila V. Chistyakova

{"title":"Ciliates from the intestine of zoo-kept black rhinoceros, with immunofluorescence microscopic and molecular phylogenetic investigation of Rhinozeta rhinozeta (Litostomatea)","authors":"Olga A. Kornilova , Maria E. Belokon , Maria A. Skazina , Olga S. Alekseeva , Ludmila V. Chistyakova","doi":"10.1016/j.ejop.2023.126006","DOIUrl":"10.1016/j.ejop.2023.126006","url":null,"abstract":"<div>The study of endobiotic ciliates from the intestines of various zoo mammals is important for revealing the influence of various factors on endobiont communities. In this paper we describe the species diversity of endobiotic ciliates from the faeces of the eastern black rhinoceros Diceros bicornis michaeli (male and two females, mother and daughter) kept in the zoo. Seven species of the ciliates were found, among them Rhinozeta rhinozeta, R. triciliata and Prototapirella clypeata were observed in the rhinos only. The other two, Monoposthium sp. and Triplumaria sp., according to their morphology should have been identified as new ciliate species. Successful transmission of the endobionts from parents to the young rhino in the zoo was demonstrated. R. rhinozeta was investigated with the using of the methods of the light and immunofluorescence microscopy and molecular phylogeny. The composition and phylogeny of the family Cycloposthiidae were discussed.</div>","PeriodicalId":12042,"journal":{"name":"European journal of protistology","volume":null,"pages":null},"PeriodicalIF":2.9,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10210751","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

First redescription and molecular phylogeny of Trimyema claviforme Kahl, 1933 with the description of a Chinese population of Plagiopyla nasuta Stein, 1860 (Ciliophora, Plagiopylea) 棒形Trimyema claiforme Kahl的首次重新描述和分子系统发育，1933年，对中国的Plagiopyla nasuta Stein种群的描述，1860年（Ciliophora，Plagiopylea）。

IF 2.9 2区生物学

European journal of protistology Pub Date : 2023-08-01 DOI: 10.1016/j.ejop.2023.126003

Ran Li , Wenbao Zhuang , Xiaochen Feng , Hunter N. Hines , Xiaozhong Hu

{"title":"First redescription and molecular phylogeny of Trimyema claviforme Kahl, 1933 with the description of a Chinese population of Plagiopyla nasuta Stein, 1860 (Ciliophora, Plagiopylea)","authors":"Ran Li , Wenbao Zhuang , Xiaochen Feng , Hunter N. Hines , Xiaozhong Hu","doi":"10.1016/j.ejop.2023.126003","DOIUrl":"10.1016/j.ejop.2023.126003","url":null,"abstract":"<div>Ciliates belonging to the class Plagiopylea are obligate anaerobes that are often neglected due to their cryptic lifestyles, difficulty of observation, and overall under-sampling. Here, we investigate two species, namely Trimyema claviforme Kahl, 1933 and Plagiopyla nasuta Stein, 1860, collected in China from marine and freshwater anaerobic sediments, respectively. A complete morphological dataset, together with SSU rRNA gene sequence data were obtained and used to diagnose the species. No molecular sequencing had ever been performed on Trimyema claviforme, with its ciliature also previously unknown. Based on these novel data presented here, the ciliate is characterized by a claviform cell shape, with a size of 35–45 × 10–20 μm in vivo, 28–39 longitudinal somatic ciliary rows forming five ciliary girdles (four complete girdles and a shorter one), two dikinetids left to anterior end of oral kinety 1, and an epaulet. A Chinese population of the well-known ciliate P. nasuta was investigated, and morphological comparisons revealed phenotypic stability of the species. The phylogenetic analyses supported previous findings about the monophyly of the families Trimyemidae and Plagiopylidae, with Trimyema claviforme branching off early in the genus Trimyema. The Chinese population of P. nasuta clusters together with two other populations with full support corroborating their conspecificity.</div>","PeriodicalId":12042,"journal":{"name":"European journal of protistology","volume":null,"pages":null},"PeriodicalIF":2.9,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10208686","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Gregarines from darkling beetles of the Atacama Desert, Atacamagregarina paposa gen. et sp. nov. from Scotobius and Xiphocephalus ovatus sp. nov. from Psectrascelis (Coleoptera, Tenebrionidae) 阿塔卡马沙漠深色甲虫的灰蝶，Scotobius的阿塔卡马灰蝶gen.et sp.nov.和Psectrascelis的卵圆犀（鞘翅目，Tenebrionidae）。

IF 2.9 2区生物学

European journal of protistology Pub Date : 2023-08-01 DOI: 10.1016/j.ejop.2023.126008

Frank Nitsche , Sarah Carduck , Joshua von Ameln , Niclas Mach , Cristina Dorador , Reinhard Predel , Sonja Rueckert , Hartmut Arndt

{"title":"Gregarines from darkling beetles of the Atacama Desert, Atacamagregarina paposa gen. et sp. nov. from Scotobius and Xiphocephalus ovatus sp. nov. from Psectrascelis (Coleoptera, Tenebrionidae)","authors":"Frank Nitsche , Sarah Carduck , Joshua von Ameln , Niclas Mach , Cristina Dorador , Reinhard Predel , Sonja Rueckert , Hartmut Arndt","doi":"10.1016/j.ejop.2023.126008","DOIUrl":"10.1016/j.ejop.2023.126008","url":null,"abstract":"<div>Gregarine apicomplexans, a group of single celled organisms, inhabit the extracellular spaces of most invertebrate species. The nature of the gregarine-host interactions is not yet fully resolved, mutualistic, commensal and parasitic life forms have been recorded. In the extreme arid environment of the Atacama Desert, only a few groups of invertebrates hosting gregarines such as darkling beetles (Tenebrionidae) were able to adapt, providing an unparalleled opportunity to study co-evolutionary diversification. Here, we describe one novel gregarine genus comprising one species, Atacamagregarina paposa gen. et sp. nov., and a new species, Xiphocephalus ovatus sp. nov. (Apicomplexa: Eugregarinoridea, Stylocephalidae), found in the tenebrionid beetle genera Scotobius (Tenebrioninae, Scotobiini) and Psectrascelis intricaticollis ovata (Pimeliinae, Nycteliini), respectively. In the phylogenetic analysis based on SSU rDNA, Atacamgregarina paposa representing the new genus is basal, forming a separate clade with terrestrial gregarines specific for North American darkling beetles.</div>","PeriodicalId":12042,"journal":{"name":"European journal of protistology","volume":null,"pages":null},"PeriodicalIF":2.9,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10211239","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Novel contributions to the molecular and morphological diversity of freshwater monothalamid foraminifera: Description of six new species 淡水单丘脑有孔虫分子和形态多样性的新贡献:六个新种的描述

IF 2.9 2区生物学

European journal of protistology Pub Date : 2023-08-01 DOI: 10.1016/j.ejop.2023.126014

Ferry Siemensma , Maria Holzmann

{"title":"Novel contributions to the molecular and morphological diversity of freshwater monothalamid foraminifera: Description of six new species","authors":"Ferry Siemensma , Maria Holzmann","doi":"10.1016/j.ejop.2023.126014","DOIUrl":"10.1016/j.ejop.2023.126014","url":null,"abstract":"<div>Non-marine monothalamous foraminifera are common in freshwater and soil habitats. They comprise a poorly-known group lacking sufficient information about diversity, morphology, reproduction, distribution and ecology. Based on an integrative morphological and molecular approach we describe a new family, a new genus and six new species of freshwater monothalamids from different localities in the Netherlands and France. We establish Astroperula as a new genus of organic walled freshwater foraminifera that contains two species, Astroperula dumacki and Astroperula parvipila. Furthermore, two new agglutinated freshwater monothalamids are described and illustrated, Limnogromia leanneae and Lacogromia pawlowskii, one new organic walled, Velamentofex dujardini, and a new naked monothalamid, Haplomyxa retiforma. Additional information is provided about a special form of cell division in Claparedellus lachmannii and L. leanneae, and feeding behavior in cultures of V. dujardini. Morphological observations are added for an unidentified Limnogromia sampled from the Netherlands and two types of Lacogromia sampled from an alpine region in the French Pyrenees and a karst sinkhole in Bosnia and Herzegovina. The present study provides additional insight into the ecology, diversity and occurrence of freshwater monothalamids and emphasizes the fact that a combination of morphological and molecular methods is necessary to clearly distinguish species in this group.</div>","PeriodicalId":12042,"journal":{"name":"European journal of protistology","volume":null,"pages":null},"PeriodicalIF":2.9,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10210338","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Genome size and GC content of myxomycetes 黏菌的基因组大小和GC含量

IF 2.9 2区生物学

European journal of protistology Pub Date : 2023-08-01 DOI: 10.1016/j.ejop.2023.125991

Shu Li , Bao Qi , Xueyan Peng , Wei Wang , Wan Wang , Pu Liu , Bao Liu , Zhanwu Peng , Qi Wang , Yu Li

引用次数: 0

Identification of the heterotrophic nanoflagellate Bilabrum latius in the southern Adriatic (Mediterranean Sea) 南亚得里亚海(地中海)异养型纳米鞭毛虫的鉴定

IF 2.9 2区生物学

European journal of protistology Pub Date : 2023-08-01 DOI: 10.1016/j.ejop.2023.125999

Ana Baricevic, Daniela Maric Pfannkuchen, Mirta Smodlaka Tankovic, Mia Knjaz, Ivan Vlasicek, Lana Grizancic, Tjasa Kogovsek, Martin Pfannkuchen

{"title":"Identification of the heterotrophic nanoflagellate Bilabrum latius in the southern Adriatic (Mediterranean Sea)","authors":"Ana Baricevic, Daniela Maric Pfannkuchen, Mirta Smodlaka Tankovic, Mia Knjaz, Ivan Vlasicek, Lana Grizancic, Tjasa Kogovsek, Martin Pfannkuchen","doi":"10.1016/j.ejop.2023.125999","DOIUrl":"10.1016/j.ejop.2023.125999","url":null,"abstract":"<div>Heterotrophic flagellates (HF) represent an important protist group in marine ecosystem functioning. Characterised by high taxonomic diversity, identification and classification of HF is often difficult using classical methods of light microscopy (LM). Complementing LM with molecular methods, such as barcoding, enables reliable taxonomic identification of even small size nanoflagellates that share similar or unnoticeable morphological features. The order Bicosoecida is a group of heterotrophic nanoflagellates that are important part of protist plankton and benthic communities of the world oceans. Recently, on the basis of high-resolution light microscopy and barcoding, a new bicosoecid genus, Bilabrum, was described with B. latius sp. as a type species. Our study reports on identification of B. latius from co-culture with the diatom species Chaetoceros affinis isolated from fresh plankton samples collected in the southern Adriatic. This detection of the Adriatic B.latius represents first record of this species outside itś up to now known and described habitat (deep-sea sediment of the South - East Atlantic Ocean) and in diatom co-culture.</div>","PeriodicalId":12042,"journal":{"name":"European journal of protistology","volume":null,"pages":null},"PeriodicalIF":2.9,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10207639","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Single-cell transcriptome reveals cell division-regulated hub genes in the unicellular eukaryote Paramecium 单细胞转录组揭示了单细胞真核生物草履虫中细胞分裂调控的枢纽基因

IF 2.9 2区生物学

European journal of protistology Pub Date : 2023-06-01 DOI: 10.1016/j.ejop.2023.125978

Juan Yang , Zhenyuan Wang , Chundi Wang , Danxu Tang , Zihan Zang , Naomi A. Stover , Xiao Chen , Lifang Li

{"title":"Single-cell transcriptome reveals cell division-regulated hub genes in the unicellular eukaryote Paramecium","authors":"Juan Yang , Zhenyuan Wang , Chundi Wang , Danxu Tang , Zihan Zang , Naomi A. Stover , Xiao Chen , Lifang Li","doi":"10.1016/j.ejop.2023.125978","DOIUrl":"10.1016/j.ejop.2023.125978","url":null,"abstract":"<div>The transition from growth to division during the cell cycle encompasses numerous conserved processes such as large-scale DNA replication and protein synthesis. In ciliate cells, asexual cell division is accompanied by additional cellular changes including amitotic nuclear division, extensive ciliogenesis, and trichocyst replication. However, the molecular mechanisms underlying these processes remain elusive. In this study, we present single-cell gene expression profiles of Paramecium cf. multimicronucleatum cells undergoing cell division. Our results reveal that the most up-regulated genes in dividing cells compared to growing cells are associated with 1) cell cycle signaling pathways including transcription, DNA replication, chromosome segregation and protein degradation; 2) microtubule proteins and tubulin glycylases which are essential for ciliogenesis, nuclei separation and structural differentiation signaling; and 3) trichocyst matrix proteins involved in trichocyst synthesis and reproduction. Furthermore, weighted gene co-expression network analysis identified hub genes that may play crucial roles during cell division. Our findings provide insights into cell cycle regulators, microtubules and trichocyst matrix proteins that may exert influence on this process in ciliates.</div>","PeriodicalId":12042,"journal":{"name":"European journal of protistology","volume":null,"pages":null},"PeriodicalIF":2.9,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9647201","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Morphologic and molecular characterization of Apertospathula pilata n. sp., a novel freshwater spathidiid (Ciliophora, Litostomatea) from Idaho, USA 美国爱达荷州一种新型淡水蜘蛛(纤毛虫科，Litostomatea)的形态和分子特征

IF 2.9 2区生物学

European journal of protistology Pub Date : 2023-06-01 DOI: 10.1016/j.ejop.2023.125990

William Bourland

{"title":"Morphologic and molecular characterization of Apertospathula pilata n. sp., a novel freshwater spathidiid (Ciliophora, Litostomatea) from Idaho, USA","authors":"William Bourland","doi":"10.1016/j.ejop.2023.125990","DOIUrl":"10.1016/j.ejop.2023.125990","url":null,"abstract":"<div>Order Spathidiida Foissner and Foissner, 1988 comprises a large group of morphologically diverse, primarily predatory, free living ciliates, the phylogeny of which has remained stubbornly unresolved. Families Arcuospathidiidae and Apertospathulidae are two morphologically similar groups established on the basis of differences in the morphology of the oral bulge and circumoral kinety. While Arcuospathidiidae is non-monophyletic in 18S rRNA gene analyses, the Apertospathulidae has been represented by only a single Apertospathula sequence in public databases. In this report, a novel freshwater species, Apertospathula pilata n. sp. is described on the basis of living observation, silver impregnation, and scanning electron microscopy. The phylogeny of the new species is assessed based on the rRNA cistron. The main features distinguishing A. pilata n. sp. from all congeners are: the oral bulge extrusomes (filiform, up to 25 µm long), the combination of body size (130–193 µm) and shape (spatulate), the extensive oral bulge length (41% of the cell length after protargol impregnation), and multiple micronuclei (one to five, two on average). The monophyly of Apertospathulidae Foissner, Xu and Kreutz, 2005 is rejected.</div>","PeriodicalId":12042,"journal":{"name":"European journal of protistology","volume":null,"pages":null},"PeriodicalIF":2.9,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9864006","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Testate amoebae response and vegetation composition after plantation removal on a former raised bog 在前抬高的沼泽上移除人工林后，遗存变形虫的反应和植被组成

IF 2.9 2区生物学

European journal of protistology Pub Date : 2023-06-01 DOI: 10.1016/j.ejop.2023.125977

Angela L. Creevy , David M. Wilkinson , Roxane Andersen , Richard J. Payne

{"title":"Testate amoebae response and vegetation composition after plantation removal on a former raised bog","authors":"Angela L. Creevy , David M. Wilkinson , Roxane Andersen , Richard J. Payne","doi":"10.1016/j.ejop.2023.125977","DOIUrl":"10.1016/j.ejop.2023.125977","url":null,"abstract":"<div>Extensive drainage of peatlands in north-west Europe for the purposes of afforestation for timber production and harvesting has altered the carbon balance and biodiversity value. Large-scale restoration projects aim to reinstate hydrological conditions to keep carbon locked up in the peat and to restart active peat growth. Testate amoebae are an informal grouping of well-studied protists in peatland environments and as microbial consumers play an important role in nutrient and carbon cycling. Using a space for time substitution approach, this study investigated the response of testate amoebae assemblages and vegetation composition after tree removal on a drained raised bog. There was a clear difference in microbial assemblages between open and a chronosequence of restoration areas. Results suggest microbial recovery after rewetting is a slow process with plant composition showing a faster response than the microbial assemblage. Mixotrophic testate amoebae had not recovered seventeen years following plantation removal and the establishment of Sphagnum mosses in the wetter microforms. These results suggest that vegetation composition and Testate amoeba assemblages respond differently to environmental drivers at forest-to-bog restoration areas. Local physicochemical peat properties were a stronger driver of the testate assemblage compared with vegetation. Complete recovery of microbial assemblages may take place over decadal timescales.</div>","PeriodicalId":12042,"journal":{"name":"European journal of protistology","volume":null,"pages":null},"PeriodicalIF":2.9,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9703381","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1