Mallomonas Camerunensis Sp. Nov. (Chrysophyceae, Stramenopiles) From A Shallow Puddle In The Guineo-Congolian Rainforest (Cameroon)

Piątek, Jolanta

doi:10.1515/pbj-2015-0033

Cited by 10 publications

(7 citation statements)

References 17 publications

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“…In particular, the literature on the tropical region, including its Asian distribution, is quite limited [23][24][25][26][27][28][29]. Studies of the tropical region often describe many new species, most of which are endemic [24,25,[30][31][32][33][34][35][36][37][38]. Specialized research of synuralean algae in Vietnam began in 2008 [39].…”

Section: Introductionmentioning

confidence: 99%

Studies on Algae from the Order Synurales (Chrysophyceae) in Northern Vietnam

2021

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The present paper focuses on the flora of synuralean algae from four northern provinces in Vietnam: Bac Kan, Hanoi, Ninh Binh, and Thanh Hoa. Fifty-five water bodies were studied, including territories within national parks Ba Be, Ba Vi, Cuc Phuong, Ben En, and Trang An Wetland—The World Cultural and Natural Heritage and Van Long Wetland Nature Reserve. Samples were obtained from natural lakes and wetlands, artificial reservoirs and ponds, and small temporary water bodies. Electron microscopy allowed for the discovery of 39 taxa, 37 of which belonged to the genus Mallomonas and two to the genus Synura. Six taxa of the genus Mallomonas and two taxa from the genus Synura were not identified to the lower rank. Five taxa are reported for the first time in Vietnam. The most diverse flora was observed in natural protected water bodies. Eutrophic and hypereutrophic water bodies, which were prevalent in the study area, had a reduced number of selected species.

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Section: Introductionmentioning

confidence: 99%

Studies on Algae from the Order Synurales (Chrysophyceae) in Northern Vietnam

2021

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“…Recently, two of such morphologically unusual M. rasilis morphotypes were described as new species. The first is M. camerunensis Piątek, found in Cameroon, Africa (Piątek ). Main distinctive features of this taxon are ribs on the dome and numerous papillae on the shield of scales.…”

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.…”

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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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“…Piątek (2015), which belongs to the series Papillosa Asmund & Kristiansen (1986). As pointed out by Němcová and Kreidlová (2013), even though records of new Mallomonas species are continuously published, it seems that the number of species and their distribution may be underestimated.…”

Section: Discussionmentioning

confidence: 99%

Mallomonas cronbergiae (Chrysophyceae, Stramenopiles), A New Species from the Guineo-Congolian Rainforest in Cameroon

Piątek

Łukaszek

2016

Polish Botanical Journal

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Abstract.A new species of Mallomonas Perty, M. cronbergiae J. Piątek sp. nov., was found in a tropical shallow stream pool in the Guineo-Congolian rainforest in Cameroon. It belongs to the series Ouradiotae and is similar to the three other Mallomonas taxa from this series, namely M. ouradion Harris & Bradley, M. parvula Dürrschmidt and M. parvula var. nichollsii Wujek & Bland, but differs in some morphological characters that clearly differentiate M. cronbergiae as a distinct species. The new species has a different size of scales, characteristic 3-7 pores at the posterior rim, an anterior flange ornamented with papillae, and a shield thickly ornamented with papillae (14-16 per scale width). The species is described and illustrated with the use of light and scanning electron microscopy.

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Mallomonas Camerunensis Sp. Nov. (Chrysophyceae, Stramenopiles) From A Shallow Puddle In The Guineo-Congolian Rainforest (Cameroon)

Cited by 10 publications

References 17 publications

Studies on Algae from the Order Synurales (Chrysophyceae) in Northern Vietnam

Studies on Algae from the Order Synurales (Chrysophyceae) in Northern Vietnam

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 cronbergiae (Chrysophyceae, Stramenopiles), A New Species from the Guineo-Congolian Rainforest in Cameroon

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