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Issue: Vol. 662 No. 3: 13 Aug. 2024
Type: Article
Published: 2024-08-13
DOI: 10.11646/phytotaxa.662.3.2
Page range: 224-238
Abstract views: 119
PDF downloaded: 3

Morphology, phylogenetic position and distribution of Mallomonas mangofera and Mallomonas foveata comb. et stat. nov. (Synurales, Chrysophyceae)

A.N. Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences, Leninsky Prospect 33, Moscow, 119071, Russia, Joint Vietnam-Russia Tropical Science and Technology Research Center, 63 Nguyen Van Huyen, Nghia Do, Cau Giay, Ha Noi, 11307, Vietnam
A.N. Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences, Leninsky Prospect 33, Moscow, 119071, Russia
T.I. Vyazemsky Karadag Scientific Station, Natural Reserve of the Russian Academy of Sciences, Nauki street 24, Kurortnoe, Feodosiya, 298188, Russia
Moscow Institute of Physics and Technology, Dolgoprudny, 141701, Russia
Synurales Mallomonas section Torquatae scale ultrastructure molecular phylogeny new combination Algae

Abstract

Strains of Mallomonas mangofera var. mangofera and M. mangofera var. foveata from Russia and Vietnam were studied. Their phylogenetic position was revealed using the SSU rDNA + rbcL cpDNA dataset. The ultrastructure of scales and bristles was studied using transmission and scanning electron microscopy. Based on these studies, a new combination was proposed: Mallomonas foveata comb. et stat. nov. The problems associated with the identification of Mallomonas mangofera and determination of the scale morphotype belonging to this taxon are discussed, and a new emended formal description and holotype are proposed. Based on the literature data and metabarcoding results, the distribution of Mallomonas mangofera and Mallomonas foveata was revised. Mallomonas mangofera has been recorded mainly in the temperate zone of Eurasia, North America and Japan. Mallomonas foveata has a wider distribution and is more often observed in regions with a warm climate.

References

  1. Asmund, B. & Kristiansen, J. (1986) The genus Mallomonas (Chrysophyceae). A taxonomic survey based on the ultrastructure of silica scales and bristles. Opera Botanica 85: 1–128.
  2. Asmund, B. & Takahashi, E. (1969) Studies on Chrysophyceae from some ponds and lakes in Alaska VIII. Mallomonas species examined with the electron microscope II. Hydrobiologia 34: 305–321. https://doi.org/10.1007/BF00045390
  3. Barreto, S. (2005) The silica-scaled chrysophyte flora of Hungary. Nova Hedwigia Beiheft 128: 11–41.
  4. Belevich, T.A., Ilyash, L.V., Milyutina, I.A., Logacheva, M.D., Goryunov, D.V. & Troitsky, A.V. (2015) Metagenomic analyses of White Sea picoalgae: first data. Biochemistry (Moscow) 80: 1514–1521. https://doi.org/10.1134/S0006297915110140
  5. Bessudova, A.Y., Bukin, Y.S., Sorokovikova, L.M., Firsova, A.D. & Tomberg, I.V. (2018) Silica-scaled chrysophytes in small lakes of the lower Yenisei basin, the arctic. Nova Hedwigia 107: 315–336. https://doi.org/10.1127/nova_hedwigia/2018/0473
  6. Bessudova, A., Likhoshway, Y., Firsova, A., Mitrofanova, E., Koveshnikov, M., Soromotin, A., Khoroshavin, V. & Kirillov, V. (2023) Small Organisms in a Large River: What Provides the High Diversity of Scaled Chrysophytes in the Ob River? Water 15: 3054. https://doi.org/10.3390/w15173054
  7. Boenigk, J., Wodniok, S., Bock, C., Beisser, D., Hempel, C., Grossmann, L. & Jensen, M. (2018) Geographic distance and mountain ranges structure freshwater protist communities on a European scale. Metabarcoding and Metagenomics 2: e21519. https://doi.org/10.3897/mbmg.2.21519
  8. Bolyen, E., Rideout, J.R., Dillon, M.R., Bokulich, N.A., Abnet, C.C., Al-Ghalith, G.A., Alexander, H., Alm, E.J., Arumugam, M., Asnicar, F., Bai, Y., Bisanz, J.E., Bittinger, K., Brejnrod, A., Brislawn, C.J., Brown, C.T., Callahan, B.J., Caraballo-Rodríguez, A.M., Chase, J., Cope, E.K., Da Silva, R., Diener, C., Dorrestein, P.C., Douglas, G.M., Durall, D.M., Duvallet, C., Edwardson, C.F., Ernst, M., Estaki, M., Fouquier, J., Gauglitz, J.M., Gibbons, S.M., Gibson, D.L., Gonzalez, A., Gorlick, K., Guo, J., Hillmann, B., Holmes, S., Holste, H., Huttenhower, C., Huttley, G.A., Janssen, S., Jarmusch, A.K., Jiang, L., Kaehler, B.D., Kang, K.B., Keefe, C.R., Keim, P., Kelley, S.T., Knights, D., Koester, I., Kosciolek, T., Kreps, J., Langille, M.G.I., Lee, J., Ley, R., Liu, Y.-X., Loftfield, E., Lozupone, C., Maher, M., Marotz, C., Martin, B.D., McDonald, D., McIver, L.J., Melnik, A.V., Metcalf, J.L., Morgan, S.C., Morton, J.T., Naimey, A.T., Navas-Molina, J.A., Nothias, L.F., Orchanian, S.B., Pearson, T., Peoples, S.L., Petras, D., Preuss, M.L., Pruesse, E., Rasmussen, L.B., Rivers, A., Robeson, M.S.II, Rosenthal, P., Segata, N., Shaffer, M., Shiffer, A., Sinha, R., Song, S.J., Spear, J.R., Swafford, A.D., Thompson, L.R., Torres, P.J., Trinh, P., Tripathi, A., Turnbaugh, P.J., Ul-Hasan, S., van der Hooft, J.J.J., Vargas, F., Vázquez-Baeza, Y., Vogtmann, E., von Hippel, M., Walters, W., Wan, Y., Wang, M., Warren, J., Weber, K.C., Williamson, C.H.D., Willis, A.D., Xu, Z.Z., Zaneveld, J.R., Zhang, Y., Zhu, Q., Knight, R. & Caporaso, J.G. (2019) Reproducible, interactive, scalable and extensible microbiome data science using QIIME 2. Nature biotechnology 37: 852–857. https://doi.org/10.1038/s41587-019-0209-9
  9. Bradley, D.E. (1966) Observations on some chrysomonads from Scotland. Journal of Protozoology 13: 143–154. https://doi.org/10.1111/j.1550-7408.1966.tb01885.x
  10. Calado, A.J. & Craveiro, S.C. (1995) Notes on the ecology of Synurophycean algae found in Portugal. Nordic Journal of Botany 15 (6): 641–654. https://doi.org/10.1111/j.1756-1051.1995.tb02135.x
  11. Čertnerová, D., Čertner, M. & Škaloud, P. (2019) Molecular phylogeny and evolution of phenotype in silica‐scaled chrysophyte genus Mallomonas. Journal of phycology 55: 912–923. https://doi.org/10.1111/jpy.12882
  12. Choi, B., Son, M., Kim, J.I. & Shin, W. (2013) Taxonomy and phylogeny of the genus Cryptomonas (Cryptophyceae, Cryptophyta) from Korea. Algae 28: 307–330. https://doi.org/10.4490/algae.2013.28.4.307
  13. Couté, A. & Franceschini, I.M. (1998) Scale-Bearing Chrysophytes from Acid Water of Florianopolis, Santa Catarina Island, South Brazil. Algological Studies 88: 37–61. https://doi.org/10.1127/algol_stud/88/1998/37
  14. Cronberg, G. (1989) Scaled chrysophytes from the tropics. Nova Hedwigia 95: 191–232.
  15. Darriba, D., Taboada, G.L., Doallo, R. & Posada, D. (2012) jModelTest 2: more models, new heuristics and parallel computing. Nature Methods 9: 1–772. https://doi.org/10.1038/nmeth.2109
  16. Daugbjerg, N. & Andersen, R.A. (1997) Phylogenetic analysis of the rbcL sequences from haptophytes and heterokont algae suggest their chloroplasts are unrelated. Molecular Biology and Evolution 14: 1242–1251. https://doi.org/10.1093/oxfordjournals.molbev.a025733
  17. Dürrschmidt, M. (1983) A taxonomic study of the Mallomonas mangofera group (Mallomonadaceae, Chrysophyceae), including the description of four new taxa. Plant systematics and evolution 143: 175–196. https://doi.org/10.1007/BF00986377
  18. Dürrschmidt, M. & Croome, R. (1985) Mallomonadaceae (Chrysophyceae) from Malaysia and Australia. Nordic Journal of Botany 5: 285–298. https://doi.org/10.1111/j.1756-1051.1985.tb01657.x
  19. Dürrschmidt, M. & Cronberg, G. (1989) Contribution to the knowledge of tropical chrysophytes: Mallomonadaceae and Paraphysomonadaceae from Sri Lanka. Archiv für Hydrobiologie. Supplementband. Monographische Beiträge 82: 15–37.
  20. Franceschini, I.M. & Kristiansen, J.M. (2004) New records of scale-bearing chrysophytes for Florianópolis, Santa Catarina Island, SouthernBrazil. Algological Studies 111: 63–77. https://doi.org/10.1127/1864-1318/2004/0111-0063
  21. Gusev, E.S. (2013) Studies on Synurophycean Algae from Mangrove Wetlands (Vietnam). Nova Hedwigia 142: 87–95.
  22. Gusev, E. & Kezlya, E. (2021) Mallomonas lusca sp. nov. (Synurales, Chrysophyceae)—a rare species from Southeast Asia. Phytotaxa 529 (1): 105–112. https://doi.org/10.11646/phytotaxa.529.1.82019/091
  23. Gusev, E. & Martynenko, N. (2022) Diversity of silica–scaled Chrysophytes in Central Vietnam. Water 14: 1–21. https://doi.org/10.3390/w14010065
  24. Gusev, E.S., Doan-Nhu, H. & Nguyen-Ngoc, L. (2017) Silica-Scaled Chrysophytes from Cat Tien National Park (Dong Nai Province, Vietnam). Nova Hedwigia 105: 347–364. https://doi.org/10.1127/nova_hedwigia/2017/0416
  25. Gusev, E.S., Čertnerová, D., Škaloudová, M. & Škaloud, P. (2018) Exploring cryptic diversity and distribution patterns in the Mallomonas kalinae/rasilis species complex with a description of a new taxon—Mallomonas furtiva sp. nov. Journal of Eukaryotic Microbiology 65: 38–47. https://doi.org/10.1111/jeu.12427
  26. Gusev, E.S., Perminova, O.S., Guseva, E.E. & Startseva, N.A. (2019) The genus Mallomonas in small urban rivers in Nizhniy Novgorod (Russia). Nova Hedwigia Beiheft 148: 77–88. https://doi.org/10.1127/nova-suppl/2019/091
  27. Gusev, E., Martynenko, N. & Tran, H. (2021) Studies on Algae from the Order Synurales (Chrysophyceae) in Northern Vietnam. Diversity 13: 602. https://doi.org/10.3390/d13110602
  28. Gusev, E., Kapustin, D., Shkurina, N., Martynenko, N. & Phan Trong Huan (2022a) Mallomonas fragariformis sp. nov. (Synurales, Chrysophyceae), a new tropical chrysophyte species. Phytotaxa 576 (1): 123–130. https://doi.org/10.11646/phytotaxa.576.1.8
  29. Gusev, E., Kapustin, D., Martynenko, N. & Kulikovskiy, M. (2022b) Diversity of Silica-Scaled Chrysophytes (Stramenopiles: Chrysophyceae) from Indonesian Papua. Diversity 14: 726. https://doi.org/10.3390/d14090726
  30. Gusev, E., Martynenko, N., Shkurina, N., Huan, P.T., Dien, T.D. & Thanh, N.T.H. (2023) An annotated checklist of algae from the order Synurales (Chrysophyceae) of Viet Nam. Diversity 15: 183. https://doi.org/10.3390/d15020183
  31. Gusev, E., Ignatenko, M. & Yatsenko-Stepanova, T. (2024) Mallomonas uralensis sp. nov. (Chrysophyceae, Synurales), a new species of the genus Mallomonas from the section Torquatae. Phytotaxa 655 (3): 293–300. https://doi.org/10.11646/phytotaxa.655.3.7
  32. Gutowski, A. (1997) Mallomonas species (Synurophyceae) in eutrophic waters of Berlin (Germany). Nova Hedwigia 65: c299–335. https://doi.org/10.1127/nova.hedwigia/65/1997/299
  33. Hällfors, G. & Hällfors, S. (1988) Records of chrysophytes with siliceous scales (Mallomonadaceae and Paraphysomonadaceae) from Finnish innland waters. Flagellates in freshwater ecosystems. Hydrobiologia 161: 1–29. https://doi.org/10.1007/BF00044096
  34. Hamby, R.K., Sims, L., Issel, L. & Zimmer, E. (1988) Direct ribosomal RNA sequencing: optimization of extraction and sequencing methods for work with higher plants. Plant Molecular Biology Reporter 6: 175–192. https://doi.org/10.1007/BF02669591
  35. Hansen, P. (1996) Silica-scaled Chrysophyceae and Synurophyceae from Madagascar. Archiv für Protistenkunde 147: 145–172. https://doi.org/10.1016/S0003-9365(96)80030-3
  36. Hansen, P. & Kristiansen, J. (1995) Mallomonas madagascariensis, M. lemuriocellata and M. crocodilorum (Synurophyceae), three new species from Madagascar. Nordic journal of botany 15: 215–223. https://doi.org/10.1111/j.1756-1051.1995.tb00146.x
  37. Harris, K. & Bradley, D.E. (1960) A taxonomic study of Mallomonas. Journal of General Microbiology 22: 750–777. https://doi.org/10.1099/00221287-22-3-750
  38. Hoang, D.T., Chernomor, O., von Haeseler, A., Minh, B.Q. & Vinh, L.S. (2018) UFBoot2: Improving the ultrafast bootstrap approximation. Molecular biology and evolution 35: 518–522. https://doi.org/10.1093/molbev/msx281
  39. Ito, H. (1997) A floristic study of the Chrysophyta in the Kobe district. Hyogo Prefecture, Japan (Doctoral dissertation), 274 pp.
  40. Jo, B.Y., Shin, W., Boo, S.M., Kim, H.S. & Siver, P.A. (2011) Studies on ultrastructure and three-gene phylogeny of the genus Mallomonas (Synurophyceae). Journal of Phycology 47: 415–425. https://doi.org/10.1111/j.1529-8817.2010.00953.x
  41. Jo, B.Y., Shin, W., Kim, H.S., Siver, P.A. & Andersen, R.A. (2013) Phylogeny of the genus Mallomonas (Synurophyceae) and descriptions of five new species on the basis of morphological evidence. Phycologia 52: 266–278. https://doi.org/10.2216/12-107.1
  42. Jo, B.Y., Kim, J.I., Škaloud, P., Siver, P.A. & Shin, W. (2016) Multigene phylogeny of Synura (Synurophyceae) and descriptions of four new species based on morphological and DNA evidence. European Journal of Phycology 51: 413–430. https://doi.org/10.1080/09670262.2016.1201700
  43. Katana, A., Kwiatowski, J., Spalik, K., Zakryś, B., Szalacha, E. & Szymańska, H. (2001) Phylogenetic position of Koliella (Chlorophyta) as inferred from nuclear and chloroplast small subunit rDNA. Journal of Phycology 37: 443–451. https://doi.org/10.1046/j.1529-8817.2001.037003443.x
  44. Katoh, K., Rozewicki, J. & Yamada, K.D. (2019) MAFFT online service: multiple sequence alignment, interactive sequence choice and visualization. Briefings in bioinformatics 20: 1160–1166. https://doi.org/10.1093/bib/bbx108
  45. Kim, J.H. & Kim, H.S. (2010) Mallomonas jejuensis sp. nov. (Synurophyceae) from Jeju Island, South Korea. Nordic Journal of Botany 28: 350–353. https://doi.org/10.1111/j.1756-1051.2009.00600.x
  46. Kim, H.S., Kim, J.H., Shin, W. & Jo, B.Y. (2014) Mallomonas elevata sp. nov. (Synurophyceae), a new scaled Chrysophyte from Jeju Island, South Korea. Nova Hedwigia 98: 89–102. https://doi.org/10.1127/0029-5035/2013/0138
  47. Kristiansen, J. (2000) Cosmopolitan chrysophytes. Systematics and Geography of Plants 70: 291–300. https://doi.org/10.2307/3668648
  48. Kristiansen, J. (2002) The genus Mallomonas (Synurophyceae): A taxonomic survey based on the ultrastructure of silica scales and bristles. Opera Botanica 139: 1–218.
  49. Kristiansen, J. & Andersen, R.A. (1986) Chrysophytes: aspects and problems. Cambridge University Press, Cambridge, London. New York, New Rochelle, Melbourne, Sydney, 337 pp.
  50. Kristiansen, J. & Preisig, H.R. (2007) Chrysophyte and Haptophyte Algae: 2 Teil/2nd Part: Synurophyceae. Spektrum Akademischer Verlag, Heidelberg, Germany, 252 pp.
  51. Kulizin, P.V., Gusev, E.S., Vodeneeva, E.L. & Okhapkin, A.G. (2021) Taxonomic composition and morphology of silica-scaled chrysophytes of some left-bank Volga tributaries. Inland Water Biology 14: 357–367. https://doi.org/10.1134/S199508292207001X
  52. Kulizin, P.V., Martynenko, N.A., Gusev, E.S., Kapustin, D.A., Vodeneeva, E.L. & Kulikovskiy, M.S. (2022) New Species of the Genus Cryptomonas (Cryptophyceae) in the Flora of Russia. Inland Water Biology 15: 227–237. https://doi.org/10.1134/S1995082922030087
  53. Kumar, S., Stecher, G., Li, M., Knyaz, C. & Tamura, K. (2018) MEGA X: Molecular Evolutionary Genetics Analysis across computing platforms. Molecular Biology and Evolution 35: 1547–1549. https://doi.org/10.1093/molbev/msy096
  54. McFadden, G.I. & Melkonian, M. (1986) Use of Hepes buffer for microalgal culture media and fixation for electron microscopy. Phycologia 25: 551–557. https://doi.org/10.2216/i0031-8884-25-4-551.1
  55. Momeu, L. & Péterfi, L.S. (1979) Taxonomy of Mallomonas based on the fine structure of scales and bristles. Contributii botanice Cluj-Napoca 30: 13–20.
  56. Němcová, Y., Kreidlová, J., Kosová, A. & Neustupa, J. (2012) Lakes and pools of Aquitaine region (France)–a biodiversity hotspot of Synurales in Europe. Nova Hedwigia 95: 1–24. https://doi.org/10.1127/0029-5035/2012/0036
  57. Nicholls, K.H. (1982) Mallomonas species (Chrysophyceae) from Ontario, Canada including descriptions of two new species. Nova Hedwigia Beiheft 36: 89–124.
  58. Nicholls, K.H. (1984) Four new Mallomonas species of the Torquatae series (Chrysophyceae). Canadian Journal of Botany 62: 1583–1591. https://doi.org/10.1139/b84-213
  59. Nicholls, K.H. (1988) Descriptions of three new species of Mallomonas (Chrysophyceae): M. hexagonis, M. liturata and M. galeiformis. British Phycological Journal 23: 159–166. https://doi.org/10.1080/00071618800650191
  60. Nováková, S., Němcová, Y., Neustupa, J., Rezácová, M., Sejnohova, L. & Kalina, T. (2004) Silica-scaled chrysophytes in acid peat bogs of Bohemian Switzerland (Czech Republic) and Saxonian Switzerland (Germany). Nova Hedwigia 78: 507–516. https://doi.org/10.1127/0029-5035/2004/0078-0507
  61. Patova, E., Novakovskaya, I., Gusev, E. & Martynenko, N. (2023) Diversity of Cyanobacteria and Algae in Biological Soil Crusts of the Northern Ural Mountain Region Assessed through Morphological and Metabarcoding Approaches. Diversity 15: 1080. https://doi.org/10.3390/d15101080
  62. Perty, M. (1852) Zur Kenntniss kleinster Lebensformen nach Bau, Funktionen, Systematik, mit Specialverzeichniss der in der Schweiz beobachteten. Jent & Reinert, Bern, 228 pp.
  63. Péterfi, L.S. & Momeu, L. (1977) Observations on some Mallomonas species from Romania in light and transmission electron microscopes. Nova Hedwigia 28: 155–202.
  64. Péterfi, L.S., Padisák, J., Momeu, L. & Borics, G. (1998) Silica-scaled chrysophytes from the bog-lake Baláta-tó, SW Hungary. Nordic journal of botany 18: 727–733. https://doi.org/10.1111/j.1756-1051.1998.tb01555.x
  65. Pichrtová, M., Řezáčová-Škaloudová, M. & Škaloud, P. (2007) Silica-scaled chrysophytes of the Czech-Moravian Highlands. Fottea 7: 43–48. https://doi.org/10.5507/fot.2007.004
  66. Pruesse, E., Peplies, J. & Glöckner, F.O. (2012) SINA: Accurate high-throughput multiple sequence alignment of ribosomal RNA genes. Bioinformatics 28: 1823–1829. https://doi.org/10.1093/bioinformatics/bts252
  67. Řezáčová, M., & Neustupa, J. (2007) Distribution of the genus Mallomonas (Synurophyceae)–ubiquitous dispersal in microorganisms evaluated. Protist 158: 29–37. https://doi.org/10.1016/j.protis.2006.06.004
  68. Rognes, T., Flouri, T., Nichols, B., Quince, C. & Mahé, F. (2016) VSEARCH: a versatile open source tool for metagenomics. PeerJ 4: e2584. https://doi.org/10.7717/peerj.2584
  69. Ronquist, F. & Huelsenbeck, J.P. (2003) MrBayes 3: Bayesian phylogenetic inference under mixed models. Bioinformatics 19: 1572–1574. https://doi.org/10.1093/bioinformatics/btg180
  70. Safronova, T.V. (2014) Seasonal changes in the composition of golden algae (Chrysophyceae, Synurophyceae) in the ponds of the Botanical Garden of the BIN RAS. Botanical Journal 99: 443–458.
  71. Siver, P.A. (1991) The Biology of Mallomonas: Morphology, Taxonomy and Ecology. Kluwer Academic, Dordrecht, Netherlands, 230 pp. https://doi.org/10.1007/978-94-011-3376-0_5
  72. Siver, P.A. (1999) Morphological observations of Synurophycean algae from some acidic habitats, including the description of a sub-specific taxon. Nordic Journal of Botany 19: 121–127. https://doi.org/10.1111/j.1756-1051.1999.tb01908.x
  73. Siver, P.A. & Wujek, D.E. (1993) Scaled Chrysophyceae and Synurophyceae from Florida: IV. The flora of Lake Myakka and Lake Tarpon. Florida Scientist 56: 109–117.
  74. Siver, P.A. & Wujek, D.E. (1999) Scaled Chrysophyceae and Synurophyceae from Florida, U.S.A.: VI. Observations on the flora from waterbodies in the Ocala National Forest. Nova Hedwigia 68: 75–92. https://doi.org/10.1127/nova.hedwigia/68/1999/75
  75. Siver, P.A., Jo, B.Y., Kim, J.I., Shin, W., Lott, A.M. & Wolfe, A.P. (2015) Assessing the evolutionary history of the class Synurophyceae (Heterokonta) using molecular, morphometric, and paleobiological approaches. American journal of botany 102: 921–941. https://doi.org/10.3732/ajb.1500004
  76. Škaloud, P., Kynčlová, A., Benada, O., Kofroňová, O. & Škaloudová, M. (2012) Toward a revision of the genus Synura, section Petersenianae (Synurophyceae, Heterokontophyta): morphological characterization of six pseudo-cryptic species. Phycologia 51: 303–329. https://doi.org/10.2216/11-20.1
  77. Škaloud, P., Kristiansen, J. & Škaloudová, M. (2013) Developments in the taxonomy of silica‐scaled chrysophytes–from morphological and ultrastructural to molecular approaches. Nordic journal of botany 31: 385–402. https://doi.org/10.1111/j.1756-1051.2013.00119.x
  78. Škaloud, P., Škaloudová, M., Procházková, A. & Němcová, Y. (2014) Morphological delineation and distribution patterns of four newly described species within the Synura petersenii species complex (Chrysophyceae, Stramenopiles). European Journal of Phycology 49: 213–229. https://doi.org/10.1080/09670262.2014.905710
  79. Škaloud, P., Škaloudová, M., Jadrná, I., Bestová, H., Pusztai, M., Kapustin, D. & Siver, P.A. (2020) Comparing morphological and molecular estimates of species diversity in the freshwater genus Synura (Stramenopiles): A model for understanding diversity of eukaryotic microorganisms. Journal of Phycology 56: 574–591. https://doi.org/10.1111/jpy.12978
  80. Takahashi, K. (1972) Studies on genera Mallomonas and Synura, and other plankton in freshwater with the electron microscope. VIII. On three new species of Chrysophyceae. Botanical Magazine 85: 293­–302. https://doi.org/10.1007/BF02490175
  81. Turland, N.J., Wiersema, J.H., Barrie, F.R., Greuter, W., Hawksworth, D.L., Herendeen, P.S., Knapp, S., Kusber, W.-H., Li, D.-Z., Marhold, K., May, T.W., McNeill, J., Monro, A.M., Prado, J., Price, M.J. & Smith, G.F. (Eds.) (2018) International Code of Nomenclature for algae, fungi, and plants (Shen- zhen Code) adopted by the Nineteenth International Botanical Congress Shenzhen, China, July 2017. Regnum Vegetabile: 159. https://doi.org/10.12705/Code.2018
  82. Vigna, M.S., Duque, S.R. & Nunez-Avellaneda, M. (2005) Tropical silica-scaled chrysophyte flora (Chrysophyceae and Synurophyceae) from Colombia. Nova Hedwigia 128: 151–166.
  83. Wee, J.L. (1982) Studies on the Synuraceae (Chrysophyceae) of Iowa. Bibliotheca Phycologica 62: 165.
  84. Wee, J.L., Fasone, L.D., Sattler, A., Starks, W.W. & Hurley, D.L. (2001) ITS/5.8S DNA sequence variation in 15 isolates of Synura petersenii Korshikov (Synurophyceae). Nova Hedwigia Beiheft 122: 245–258.
  85. Wei, Y.X. & Kristiansen, J. (1994) Occurrence and distribution of silica-scaled chrysophytes in Zhejiang, Jiangsu, Hubei, Yunnan and Shandong provinces, China. Archiv für Protistenkunde 144: 433–449. https://doi.org/10.1016/S0003-9365(11)80245-9
  86. Wei, Y.X. & Yuan, X.P. (2001) Studies on Silica-Scaled Chrysophytes from the Tropics and Subtropics of China. Nova Hedwigia Beiheft 122: 169–187.
  87. Wei, Y.X. & Yuan, X.P. (2013) Studies on silica-scaled chrysophytes from Zhejiang, Jiangsu and Jiangxi Provinces, China. Nova Hedwigia Beiheft 142: 163–179.
  88. Wei, Y.X., Yuan, X.P. & Kristiansen, J. (2014) Silica-Scaled Chrysophytes from Hainan, Guangdong Provinces and Hong Kong Special Administrative Region, China. Nordic journal of botany 32: 881–896. https://doi.org/10.1111/njb.00493
  89. Wujek, D.E. (1984) Chrysophyceae (Mallomonadaceae) from Florida. Florida Scientist 47: 161–170.
  90. Wujek, D.E. & Saha, L.C. (1996) Scale-bearing chrysophytes (Chrysophyceae and Synurophyceae) from India. II. Nova Hedwigia Beiheft 112: 367–377.
  91. Wujek, D.E. & Dziedic, R.M. (2005) Silica-scaled Chrysophytes from Ecuador. Gayana Botanica 62: 1–8. https://doi.org/10.4067/S0717-66432005000100002