Phycologia最新文献

{"title":"Effects of temperature on isomorphic haploid-diploid phases of Gracilariopsis tenuifrons (Gracilariales, Rhodophyta)","authors":"Andre Vinicius Fonseca Faria, Estela M. Plastino","doi":"10.1080/00318884.2023.2278381","DOIUrl":"https://doi.org/10.1080/00318884.2023.2278381","url":null,"abstract":"Sea surface temperature is increasing, and we still do not have a good understanding of the effects of these temperature rises on haploid-diploid phases of many isomorphic red algae. In this study,...","PeriodicalId":20140,"journal":{"name":"Phycologia","volume":"12 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2023-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138543607","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Interactive effects of ocean acidification and water flow on growth and recruitment of early successional coralline algal communities","authors":"Anna Kluibenschedl, Christopher E. Cornwall, Wendy A. Nelson, Miles Lamare, Daniel W. Pritchard, Christopher D. Hepburn","doi":"10.1080/00318884.2023.2272776","DOIUrl":"https://doi.org/10.1080/00318884.2023.2272776","url":null,"abstract":"ABSTRACTCoralline algae play crucial roles in near-shore ecosystems but are susceptible to ocean acidification (OA). It has been hypothesized that low water velocity, allowing localized photosynthesis-driven pH-increases in the coralline surface boundary layer, could buffer against the negative impacts of OA. To test how water motion affected the sensitivity of coralline algae to OA, coralline communities (from 2 m and 10 m depth) were grown for 220 days at two pH levels (present-day: pH 8.03, OA: pH 7.65) under differing inflow rates (400, 200 and 100 ml min–1) providing water velocities of 2.7, 5.9 and 7.8 cm s–1. Communities from both depths were grown together, photographed to assess growth, and the resulting recruitment was evaluated at the experiment’s conclusion. Low seawater pH reduced growth by c. 11% (highest flow), further decreased by >23% under the lowest flow. This reduction resulted in differential outcomes for the two depths, with skeletal net-dissolution under the combination of low flow and pH 7.65 for 10 m communities. Furthermore, there was a synergistic interaction between the effects of flow and pH, whereby the negative effect of OA strengthened under low flow, with recruitment halved at pH 7.65. This demonstrates that OA impacts can be modulated by the flow environment. Surprisingly, increased flow rates/water velocities reduced negative impacts of low pH, thus further challenging the notion that slow flow habitats offer protection from OA. The observed interactions between water flow and OA on early successional communities and their recruits may hold implications for the future of rocky reef systems dominated by these communities.KEYWORDS: Flow rateFuture oceanNew ZealandTemperate coralline communitiesWater motion ACKNOWLEDGEMENTSWe thank Brenton A. Twist for his help with culture maintenance and Kim Currie for her continuous support and expertise in seawater carbonate chemistry. Special thanks to the management committee of the East Otago Taiāpure for facilitating the field component of this research.DISCLOSURE STATEMENTNo potential conflict of interest was reported by the authors.Supplementary InformationSupplemental data for this article can be accessed online at https://doi.org/10.1080/00318884.2023.2272776Additional informationFundingThis work was funded by the Coastal Acidification, Rate, Impacts and Management (CARIM) research program (M.L), funded by the New Zealand Ministry of Business, Innovation and Employment, the CARIM Postgraduate Scholarship (to A.K.) and the Ministry for Primary Industries (MPI) New Zealand under the Biodiversity Research Programme (ZBD2014-07; W.A.N.). C.E.C. was supported by a Rutherford Discovery Fellowship from The Royal Society of New Zealand Te Apārangi (VUW-1701).","PeriodicalId":20140,"journal":{"name":"Phycologia","volume":"40 10","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135432389","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Tolerance of three temperate macroalgal taxa to marine heatwaves of differing durations and intensities is not modulated by irradiance","authors":"Erik C. Krieger, Yaelle Sarid-Segal, Imke M. Böök, Aleluia Taise, Denisa Berbece, Christopher E. Cornwall","doi":"10.1080/00318884.2023.2267411","DOIUrl":"https://doi.org/10.1080/00318884.2023.2267411","url":null,"abstract":"ABSTRACTMarine heatwaves (MHWs) are recognized as principal drivers of ocean change. However, interactions with other important local and global drivers such as ocean acidification, eutrophication and sedimentation, and the physiological mechanisms via which MHWs act on species are poorly understood. Additionally, past studies have often focused on ecologically dominant taxa such as kelps, fucoids and coral, potentially leading to a lack of understanding of direct impacts on associated species. To this end, we examined the individual and interactive impacts of MHW duration (14 and 28 days) and intensity (20.5°C and 23°C) as well as irradiance (2.3 and 4.4 mol m–2 d–1) on standardized growth of Caulerpa brownii, Corallina berteroi and Phymatolithopsis complex, three temperate macroalgal taxa that are important spaceholders in their native ecosystem in Te Whanganui a Tara Wellington, Aotearoa New Zealand. All three taxa exhibited no declines in growth in response to the exposure to longer and more intense MHWs. We posit that the simulated MHW scenarios were tolerated due to large thermal safety margins which can be expected from the range centre/leading edge position of the sampled populations, even though some of these scenarios far exceeded the intensities encountered in this region previously. Interactions between intensity, duration and irradiance were limited to an antagonistic irradiance-duration interaction in the non-calcareous green macroalga Ca. brownii only. Together, the displayed tolerance of the study species to the simulated scenarios implies limited impacts of strong MHWs four weeks or shorter in duration on ecosystem functioning in New Zealand kelp forest systems if brown algal canopies remain intact.KEYWORDS: CaulerpaClimate changeCoralline algaeKelp forestMarine heatwave ACKNOWLEDGMENTSWe thank R. D’Archino for guiding the molecular identification of coralline algae. ECK and CEC were supported by a Rutherford Discovery Fellowship from The Royal Society of New Zealand Te Apārangi (no. RDF-VUW1701), Coastal People Southern Skies Centre of Research Excellence, and Victoria University of Wellington University Research Grant awarded to CEC.AUTHOR CONTRIBUTIONSECK, YSS, IMB, AT and CEC designed the research. ECK wrote the paper. YSS ran the experiment with assistance from all other authors. YSS and ECK conducted molecular species identification. ECK performed the statistical analysis. All authors edited the manuscript, or provided intellectual input, and agreed to its submission.DISCLOSURE STATEMENTNo potential conflict of interest was reported by the authors.Supplementary InformationSupplemental data for this article can be accessed online at https://doi.org/10.1080/00318884.2023.2267411Additional informationFundingThis work was supported by the Victoria University of Wellington University Research Grant; Coastal People Southern Skies Centre of Research Excellence; Royal Society of New Zealand Te Apārangi [RDF-VUW1701].","PeriodicalId":20140,"journal":{"name":"Phycologia","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135993796","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Resolving the identity of <i>Jania crassa</i> (Corallinales, Rhodophyta)","authors":"Wendy A. Nelson, Line Le Gall, Viviana Peña, Brenton A. Twist","doi":"10.1080/00318884.2023.2253694","DOIUrl":"https://doi.org/10.1080/00318884.2023.2253694","url":null,"abstract":"ABSTRACTDNA sequences obtained from the isolectotype of Jania crassa, collected from Dusky Sound, Fiordland, New Zealand, have revealed the identity of this poorly understood taxon, and enabled comparison with modern material. The name Jania crassa has been previously widely applied in New Zealand and Australia. Data presented here show that Jania crassa differs from other species within the New Zealand region: of the eight species of Jania currently recognized, three are dichotomously branched, and two of these are known from southern New Zealand. Jania crassa can be distinguished from the smaller and epiphytic species of Jania in southern New Zealand, J. sphaeroramosa, on the basis of size and growth habit. Jania crassa appears to be an infrequently collected, possibly endemic species of southern New Zealand, with only one recent collection confirmed. Further collections and sequence data are needed to better understand the distribution of this species, particularly in neighbouring regions.KEYWORDS: Coralline algaeCorallinophycidaeFiordlandNew Zealandtype specimen ACKNOWLEDGEMENTSWe thank the many people who have assisted with field work and contributed to collections of coralline algae from New Zealand, particularly Kate Neill, Tracy Farr, Roberta D’Archino, and Chris Hepburn, and the team at the University of Otago. We are very grateful to the skipper and crew of the RV Polaris for field work in Fiordland and Rakiura, and for field assistance from Ngāi Tahu (Ngāi Tahu Te Tiaki Mahinga Kai). We very much appreciate the assistance of herbarium staff at Te Papa Tongarewa Museum of New Zealand; and Erika Mackay and Kate Neill (NIWA) for preparation of plates.DISCLOSURE STATEMENTNo potential conflict of interest was reported by the authors.Supplementary InformationSupplemental data for this article can be accessed online at https://doi.org/10.1080/00318884.2023.2253694Additional informationFundingThis work was supported by NIWA SSIF funding.","PeriodicalId":20140,"journal":{"name":"Phycologia","volume":"99 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135591410","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Studies on the complex Warnowiaceae (Dinophyceae) I. Lohmann’s Pouchetia parva refound and renamed Nematodinium parvum comb. nov. (= Warnowia parva)","authors":"María García-Portela, Ø. Moestrup, N. Daugbjerg, Andreas Altenburger, N. Lundholm","doi":"10.1080/00318884.2023.2244810","DOIUrl":"https://doi.org/10.1080/00318884.2023.2244810","url":null,"abstract":"The dinoflagellate family Warnowiaceae has often been considered to include some of the most complex cells among the protists. The number of described species is around 40, but both the species and generic concepts are in need of revision. Warnowiaceans are often fragile and readily change morphology under the light microscope, and they are usually regarded to be rare. They are particularly famous for the eye-like structures, termed ocelloids. Studies on warnowiaceans are hampered by lack of cultures, and our studies are therefore based on cells obtained directly from field samples. We provide a description of Nematodinium parvum comb. nov . (syn. Pouchetia parva, Warnowia parva ), based on light, scanning and transmission electron microscopy, combined with phylogenetic analyses of ribosomal genes. It was described in 1908 by Lohmann from Kieler Bay, but is often common in Danish waters, allowing observations on distribution and behaviour. Crucial conditions for finding high cell abundances were periods of warm temperatures and a calm sea. Cells were yellowish, photosynthetic, and contained a net-like chloroplast, in addition to an ocelloid, trichocysts and harpoon-like nematocysts. They divided asexually but planozygotes were also seen. Following the demonstration of nematocysts, the species, which has been known as Warnowia parva since 1928, is transferred to Nematodinium . The finding of a peduncle indicates mixotrophy but all feeding experiments failed to identify a suitable prey. The phylogenetic analyses based on single-cell PCR and sequence determinations of small and large subunit rDNA confirmed that the systematics of Nematodinium and Warnowia is in a state of flux.","PeriodicalId":20140,"journal":{"name":"Phycologia","volume":"1 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2023-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41466064","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Species diversity and molecular phylogeny of Crustaphytum and Mesophyllum (Hapalidiales, Rhodophyta) from the Asian Pacific, including three new species of Crustaphytum","authors":"Li-Chia Liu, Showe-Mei Lin, Phaik-Eem Lim","doi":"10.1080/00318884.2023.2235235","DOIUrl":"https://doi.org/10.1080/00318884.2023.2235235","url":null,"abstract":"ABSTRACT The non-geniculate coralline algal genus Crustaphytum occurs in subtropical regions of the Pacific and Atlantic Oceans and presently contains only two species, C. pacificum and C. atlanticum. In contrast, the genus Mesophyllum is more widely reported and has representative species in both warm and cold waters. We analysed the species diversity of collections of Crustaphytum and Mesophyllum-like specimens from the Asian-Pacific region, based on psbA and rbcL sequence analyses and morphology. Our molecular analyses showed that the collections of Mesophyllum-like specimens mostly belonged to Crustaphytum with only a few specimens clustering with the Mesophyllum/Melyvonnea complex. We also describe three new species of Crustaphytum (C. taiwani-boreale sp. nov., C. taoyuanense sp. nov. and C. fragile sp. nov.) that are commonly found in the algal reefs in Northwest Taiwan, utilizing both scanning electron and light microscopy, and DNA sequence analyses. Crustaphytum fragile (79–95 μm thick) and Crustaphytum taiwani-boreale (235–436 μm thick) mostly grow in similar habitats in the algal reefs and can only be distinguished by a combination of characters relating to tetrasporangial chamber size and the number of cell layers in the cortex and medulla. Crustaphytum taoyuanense (233–300 μm thick) can be separated from the other species by its violet-red colour and by the margins of older thalli becoming overgrown by adjacent thalli. Crustaphytum taoyuanense and C. fragile are restricted to Taoyuan City in Northwestern Taiwan, whereas C. taiwani-boreale has a broader distribution in Northern Taiwan. Our study reveals a rich species diversity of Crustaphytum in the warm water region of the Western Pacific Ocean.","PeriodicalId":20140,"journal":{"name":"Phycologia","volume":" ","pages":""},"PeriodicalIF":1.6,"publicationDate":"2023-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47377771","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"<i>Biecheleria donggangensis sp. nov</i> . (Suessiaceae, Dinophyceae), a new marine woloszynskioid species germinated from coastal sediment of the Yellow Sea, China","authors":"Yuyang Liu, Zhangxi Hu, Haifeng Gu, Zhe Tao, Yunyan Deng, Lixia Shang, Zhaoyang Chai, Ying Zhong Tang","doi":"10.1080/00318884.2023.2273655","DOIUrl":"https://doi.org/10.1080/00318884.2023.2273655","url":null,"abstract":"ABSTRACTA new marine woloszynskioid dinoflagellate, Biecheleria donggangensis sp. nov., germinated from the sediments of Rizhao coastal area, China, was examined by light and scanning electron microscopy. Its phylogenetic position was inferred from nuclear rDNA (partial LSU, SSU and ITS1–5.8S–ITS2) sequences. Cells were spherical to ellipsoidal (8.5‒19.2 μm long and 5.9‒11.5 μm wide) with numerous small and discoid chloroplasts, and a centrally located nucleus. Scanning electron microscopy showed an apical furrow area consisting of a single elongated apical vesicle (EAV) with 20 to 34 small globular knobs at the top of the epicone, and 13–15 latitudinal series of amphiesmal vesicles (AVs). Biecheleria donggangensis can be distinguished from other congeneric species by the configuration of the AVs bordering the EAV, the number of latitudinal AVs, and the trichocyst pore (TP) structures around the EAV. Thick-walled and spherical (or oval) cysts were 16.1‒23.5 μm in diameter and decorated with needle-like processes, each with a distal swelling. Molecular phylogenies using maximum likelihood (ML) were examined by three statistical methods (bootstrap, approximate Bayes and the Shimodaira-Hasegawa-like approximate likelihood-ratio test), which clearly demonstrated that the isolate belonged to the genus Biecheleria but formed a clade distinct from all previously described species. Genetic distance analyses justified describing the isolate as a new species rather than a new ribotype of B. cincta.KEYWORDS: Amphiesmal vesicle (AV)DinoflagellatesGenetic distanceNucleus-encoded rDNAPhylogeny DISCLOSURE STATEMENTNo potential conflict of interest was reported by the authors.Supplementary InformationSupplemental data for this article can be accessed online at https://doi.org/10.1080/00318884.2023.2273655Additional informationFundingThis work was financially supported by the National Science Foundation of China (No. 42106199), the Science & Technology Basic Resources Investigation Program of China (2018FY100204) and the Science and Technology Innovation Project of Laoshan Laboratory (LSKJ202203700).","PeriodicalId":20140,"journal":{"name":"Phycologia","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134948895","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Molecular assessment of specimens previously assigned to <i>Cirrulicarpus</i> (Kallymeniaceae, Rhodophyta) in Brazil, with the description of <i>Meredithia dichotoma sp. nov.</i>","authors":"Luanda Pereira Soares, Silvia M.P.B. Guimarães, Mutue Toyota Fujii","doi":"10.1080/00318884.2023.2241123","DOIUrl":"https://doi.org/10.1080/00318884.2023.2241123","url":null,"abstract":"ABSTRACTMolecular sequence analyses of specimens previously identified as Cirrulicarpus sp. in the southeastern Brazil (Espírito Santo coast), indicated that they are more closely related to the genus Meredithia than to the genus Cirrulicarpus. The new species Meredithia dichotoma is herein proposed to accommodate this uncommon and endemic taxon, morphologically characterized by an erect, narrow, strap-shaped thallus, up to 16 cm long, mostly dichotomously branched, with regular constrictions, densely to moderately filamentous medulla, with occasional ganglionic cells, and an expanded medullary region in the basal transverse sections, resembling a midrib in surface view. The species is also supported by the sequence divergence from its congeners: ≥4.3% and 2.2% in the COI-5P and rbcL markers, respectively. Meredithia dichotoma differs from other 11 species of the genus by its dimensions and general habit, never forming expanded blades. This is a new genus record for Brazil and the first species of Meredithia known to occur in the western South Atlantic, increasing the known diversity in the red algal family Kallymeniaceae.KEYWORDS: COI-5PGigartinalesMolecular phylogenyrbcLRhodoliths bedsTaxonomy ACKNOWLEDGEMENTSWe thank Feresa Cabrera for providing sequences of Meredithia hawaiiensis, and Gary Saunders by sequences of Commanderella, Hommersandia and Velatocarpus. LPS thanks the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (Bolsista CAPES/BRASIL 88887.515974/2020-00) and Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) for Postdoctoral Fellowship (152282/2022-0). MTF thanks CNPq for the Productivity Fellowship (311195/2021-0).Supplementary materialSupplemental data for this article can be accessed online at https://doi.org/10.1080/00318884.2023.2241123DISCLOSURE STATEMENTNo potential conflict of interest was reported by the authors.Additional informationFundingThis study was partially supported by a research grant from Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP 2016/50370-7 and 2017/50341-0).","PeriodicalId":20140,"journal":{"name":"Phycologia","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134949138","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A new freshwater gomphonemoid diatom genus from India, with the description of a new species from the Eastern Ghats","authors":"Balasubramanian Karthick, Murugesan Yogeshwaran, J. Patrick Kociolek","doi":"10.1080/00318884.2023.2268381","DOIUrl":"https://doi.org/10.1080/00318884.2023.2268381","url":null,"abstract":"ABSTRACTWe present light and SEM observations of a new astigmate gomphonemoid diatom from the Eastern Ghats of India. This species, and a closely allied one from the Western Ghats that has a stigma, are similar to other members of the Gomphonemataceae in terms of symmetry and certain valve features. They differ, however, in having groups of differentiated pore fields at both apices. At the headpole, the area bearing the groups of pores is flattened and positioned on the valve mantle, and is not easily seen in light microscopy. For these species we propose the genus Indiconema gen. nov. within the Gomphonemataceae. We evaluate the phylogenetic position of this group and relationships within the family based on valve and girdle band features, which suggest that the new genus is sister to Afrocymbella, a genus apparently endemic to Africa. We compare this basal phylogenetic position with other groups of organisms also found in the Western and Eastern Ghats of India, as well as to fossil taxa in the Gomphonemataceae. The sister taxon relationship with a genus known only from Africa supports a close relationship of the floras of the two regions.KEYWORDS: BiraphidDiatom phylogenyGomphonemataceaeHerculeana groupWestern Ghats ACKNOWLEDGEMENTSB. Karthick thanks the Director of Agharkar Research Institute for facilities and encouragement and Dr. Jonathan Taylor, North-West University, Potchefstroom, South Africa.DISCLOSURE STATEMENTNo potential conflict of interest was reported by the authors.Additional informationFundingThis research was supported by the Science and Engineering Research Board (SERB, CRG/2021/004668), India. The field expedition was supported by a National Geographic Society Exploration Grant (Grant Number: 9224-12).","PeriodicalId":20140,"journal":{"name":"Phycologia","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134949604","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"New terrestrial cyanobacteria from the Azores Islands: description of <i>Venetifunis gen. nov</i> . and new species of <i>Albertania, Kovacikia</i> and <i>Pegethrix</i>","authors":"Rúben Luz, Rita Cordeiro, Jan Kaštovský, Jeffrey R. Johansen, Elisabete Dias, Amélia Fonseca, Ralph Urbatzka, Vitor Vasconcelos, Vítor Gonçalves","doi":"10.1080/00318884.2023.2259243","DOIUrl":"https://doi.org/10.1080/00318884.2023.2259243","url":null,"abstract":"ABSTRACTThe taxonomy of cyanobacteria has advanced quickly with the use of molecular methods in combination with well-defined morphological and ecological characters. Using this approach, many taxonomical changes have occurred in the Synechococcales and Oscillatoriales, with the description of new families, genera and species. Here we present the study of four cyanobacterial strains from the Bank of Algae and Cyanobacteria of the Azores (BACA) culture collection, all isolated from the Azores Archipelago. The strains were genetically characterized through the amplification of the 16S rRNA gene and 16S-23S rRNA internal transcribed spacer (ITS) region, as well as morphologically by light and transmission electron microscopy. One of the strains presented a high genetic divergence from known genera of Synechococcales and was described as Venetifunis florensis gen. & sp. nov. (Trichocoleusaceae, Cyanobacteria). The remaining three strains were found to be new species of the genera Albertania, Kovacikia and Pegethrix. Venetifunis florensis was isolated from the shores of Lake Rasa in Flores Island, Kovacikia atmophytica sp. nov. is a new species mainly distinguished genetically from other Kovacikia species from Terceira Island. Albertania obscura sp. nov. was isolated from inside a volcanic cave in Terceira Island and is distinct both morphologically and genetically from the already described species. Pegethrix atlantica sp. nov. is a new morphologically and genetically different species isolated from São Miguel Island. The description of these new taxa increases the biogeographic knowledge of the four mentioned cyanobacterial genera to remote oceanic islands and new terrestrial habitats.KEYWORDS: AerophyticAtlantic islandsAtmophyticVenetifunis minimusLeptolyngbyaceaeOculatellaceaeTrichocoleusaceae ACKNOWLEDGEMENTSWe thank the association ‘Os Montanheiros’ for the access to Algar do Carvão.DISCLOSURE STATEMENTNo potential conflict of interest was reported by the authors.Supplementary materialSupplemental data for this article can be accessed online at https://doi.org/10.1080/00318884.2023.2259243Additional informationFundingRúben Luz was supported by a Ph.D. grant (M3.1.a/F/002/2020) from the Fundo Regional da Ciência e Tecnologia (FRCT). This work was funded by FEDER funds through the Interreg-MAC 2014-2020 Program under the projects ‘REBECA – Red de excelencia en biotecnología azul (algas) de la región macaronesia (MAC1.1a/060)’ and ‘REBECA-CCT – Red de Excelencia en Biotecnología Azul de la Región Macaronésica. Consolidación, Certificación y Transferencia (MAC2/1.1b/269)’, and by Portuguese National Funds through Foundation for Science and Technology (FCT), under the project UIDB/50027/2020. CIIMAR acknowledges funding by FCT through UIDB/04423/2020 and UIDP/04423/2020. JK and JRJ were supported by Project Inter Excellence LTAUSA 18008.","PeriodicalId":20140,"journal":{"name":"Phycologia","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134949333","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}