Two new species of the genus Mallomonas from the Cat Tien National Park (Viet Nam): Mallomonas distinguenda and Mallomonas skvortsovii

Gusev, Evgeniy; Doan-Nhu, Hai; Nguyen-Ngoc, Lam; Kapustin, Dmitry A.

doi:10.11646/phytotaxa.273.1.6

Cited by 18 publications

(15 citation statements)

References 5 publications

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“…However, a species (fig. 1, d) was found among them morphologically identical to Mallomonas skvortsovii Gusev et al, which was detected in Dong Nai Province: Dak Lua swamp in Cat Tien National Park (Vietnam) and described as a new species in 2016 [9]. The literature data about finding of M. skvortsovii in the water bodies of Russia are absent.…”

Section: Stauroneis Ancepsmentioning

confidence: 90%

“…Algae and Cyanobacteria were examined in a live and fixed states by light microscopy, phase contrast microscopy and scanning electron microscopy under a «Primo Star» (Carl Zeiss), «Axio Scope.A1» (Carl Zeiss), «Tescan Mira3» microscopes at the Center for the Identification and Support of Gifted Children "Gagarin "(Orenburg). For algae and Cyanobacteria species identification the identification keys [3][4][5][6][7] and articles [8][9][10][11] were used. Taxonomy and nomenclature are given according to the on-lineAlgaeBase database https://www.algaebase.org [12].…”

Section: Methodsmentioning

confidence: 99%

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The first evidence about the algae flora of the reservoirs of the “Aschisayskaya Steppe” plot (State Nature Reserve “Orenburgsky”)

2021

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The first data about the algae flora of the water bodies of the “Aschisayskaya Steppe” plot of the State Nature Reserve “Orenburgsky” are presented. 217 species and intraspecies taxa of microalgae belonging to the phyla Chlorophyta, Euglenozoa, Bacillariophyta, Ochrophyta, Streptophyta, Miozoa and Cyanobacteria were found in five reservoirs of the plot. New species for the territory of the Orenburg Region, as well as rare species for Russia are noted, their characteristics and micrographs are given. The obtained data expands the current understanding of the range of the identified taxa.

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Section: Stauroneis Ancepsmentioning

confidence: 90%

Section: Methodsmentioning

confidence: 99%

The first evidence about the algae flora of the reservoirs of the “Aschisayskaya Steppe” plot (State Nature Reserve “Orenburgsky”)

2021

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“…described from Vietnam, which has large scales with internal reticulation and a row of ribs on the dome (Gusev et al. ). Certainly, a more detailed comparison of populations sampled in different geographical areas is definitely needed to better understand the real diversity in the M. rasilis group.…”

Section: Discussionmentioning

confidence: 99%

“…Recently, four additional species were described from the tropics (Gusev ; Gusev et al. ; Piątek ). However, the genetic diversity as well as the relationship among the taxa within the section are poorly known, as only two species ( Mallomonas kalinae Řezáčová and Mallomonas papillosa Harris & Bradley) have been molecularly characterized up to now.…”

mentioning

confidence: 99%

Exploring Cryptic Diversity and Distribution Patterns in the Mallomonas kalinae/rasilis Species Complex with a Description of a New Taxon—Mallomonas furtiva sp. nov.

Gusev

Čertnerová

Škaloudová

et al. 2017

J Eukaryotic Microbiology

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A complex of closely related Mallomonas taxa belonging to the section Papillosae, M. kalinaeRez a cov a and M. rasilis D€ urrschmidt, has been studied in detail by molecular and morphometric methods. Our investigations uncovered the existence of a new species found in water bodies in Vietnam, which we describe here as Mallomonas furtiva sp. nov. This taxon is morphologically very similar to M. kalinae, from which it differs by minute, but statistically significant morphological differences on the structure of silica scales. Indeed, the principal component analysis of morphological traits measured on silica scales significantly separates all three species in the complex. Mallomonas kalinae and M. furtiva differ by number of papillae on the shield and the dome, as well as by the scale sizes. Likewise, Mallomonas rasilis and M. furtiva are primarily differentiated by the absence of submarginal anterior ribs on silica scales of the former species. Phylogenetic analyses showed that Mallomonas furtiva is closely related to M. kalinae, with which it formed a highly supported lineage. Distribution patterns of all three studied taxa are further discussed.MALLOMONAS (Stramenopiles, Chrysophyceae, order Synurales) taxonomy is based on the ultrastructure of siliceous scales and bristles (Asmund and Kristiansen 1986;Siver 1991). The genus, which contains more than 180 taxa, is divided into 19 sections due to the large number of species and great variability of scale ultrastructure (Kristiansen and Preisig 2007). The main diagnostic characters of scales used to separate species into sections are the presence/absence of a V-rib and dome, the nature of secondary siliceous structures such as papillae, ribs, and reticulations, and the morphology and position of different scale types on the cell covering. Nine of the sections are rare and contain only one or two species each. The remaining 10 sections are more speciose, each with between 5 and over 40 taxa (Siver et al. 2015). Molecular studies, based on the analysis of several nuclear and plastid genes, corroborated most of the sections with a few exceptions (Jo et al. 2011(Jo et al. , 2013. According to the most recent multigene phylogeny of synuralean algae, the genus Mallomonas is divided into two large major lineages. The A1 lineage comprises species with scales possessing a V-rib, whereas the A2 lineage includes species lacking this structure (Siver et al. 2015). The clade A2 thus comprises only two Mallomonas sections (Planae and Heterospinae), whereas all the remaining ones belong in the clade A1. The section Papillosae was established by Asmund and Kristiansen (1986) to comprise taxa producing papillae on the scale surface, and having a shallow dome on all scale types. According to Kristiansen and Preisig (2007), the section Papillosae consists of 11 species and three varieties. Recently, four additional species were described from the tropics (Gusev 2013;Gusev et al. 2016; Pia z tek 2015). However, the genetic diversity as well as the relationship among the taxa ...

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“…Intensive studies of the last decade with molecular and morphological approaches show that the real diversity of the genus is underestimated. Over last ten years, twenty new Mallomonas species have been described from different regions in Asia, including one from Russia (Gusev & Kulikovskiy 2013), two from China (Ma & Wei 2013;Němcová et al 2015), six from Korea (Kim & Kim 2008;Kim & Kim 2010;Jo et al 2013;Kim et al 2014), and eleven from Vietnam (Gusev 2012(Gusev , 2013(Gusev , 2015aGusev et al 2015Gusev et al , 2016Gusev et al , 2018. Two of these, Mallomonas elevata Han Soon Kim Dürrschmidt, and M. liturata K.H.…”

Section: Introductionmentioning

confidence: 99%

Mallomonas minuscula sp. nov. (Synurales, Chrysophyceae), a new member in the section Torquatae from Vietnam

Gusev¹,

Guseva²,

Kezlya³

et al. 2019

Fottea

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Mallomonas minuscula sp. nov. is described from Vietnam based on silica-scale morphology studied by means of transmission and scanning electron microscopy. This species belongs to the Mallomonas mangofera complex and is characterized by small scales with large polygonal papillae on the shield, raised wide arms on the anterior submarginal rib with small papillae, and a small "window" in the angle of the posterior submarginal rib. Scales of Mallomonas minuscula were found in nine localities from six provinces of Central and Southern Vietnam. The distributions and habitat conditions of the new species are summarized.

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Two new species of the genus Mallomonas from the Cat Tien National Park (Viet Nam): Mallomonas distinguenda and Mallomonas skvortsovii

Cited by 18 publications

References 5 publications

The first evidence about the algae flora of the reservoirs of the “Aschisayskaya Steppe” plot (State Nature Reserve “Orenburgsky”)

The first evidence about the algae flora of the reservoirs of the “Aschisayskaya Steppe” plot (State Nature Reserve “Orenburgsky”)

Exploring Cryptic Diversity and Distribution Patterns in the Mallomonas kalinae/rasilis Species Complex with a Description of a New Taxon—Mallomonas furtiva sp. nov.

Mallomonas minuscula sp. nov. (Synurales, Chrysophyceae), a new member in the section Torquatae from Vietnam

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