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  1. Article ; Online: Comparative palynomorphological study of the genus Symphoricarpos (Caprifoliaceae): exine sculpture and implications for evolution

    Tsymbalyuk, Zoya M. / Çelenk, Sevcan / Bell, Charles D. / Nitsenko, Lyudmіla M. / Mosyakin, Sergei L.

    Palynology. 2022 Oct. 2, v. 46, no. 4 p.1-14

    2022  

    Abstract: Recent molecular phylogenetic studies of Dipsacales place Symphoricarpos in a clade containing Leycesteria, Triosteum, and Lonicera. The aim of this research was to analyze the palynomorphological features of taxa of Symphoricarpos and to compare the ... ...

    Abstract Recent molecular phylogenetic studies of Dipsacales place Symphoricarpos in a clade containing Leycesteria, Triosteum, and Lonicera. The aim of this research was to analyze the palynomorphological features of taxa of Symphoricarpos and to compare the results with the taxonomic classification scheme and molecular phylogenetic data. Pollen morphology of 20 herbarium specimens belonging to 12 taxa of Symphoricarpos was studied using both light microscopy and scanning electron microscopy. Pollen are 3(4)-colporate, obtate to subprolate (Polar axis (P) /Equatorial diameter (E) = 0.73−1.21) in shape, and medium- and large-sized (P=27.93–62.51 µm, E=25.27−69.16 µm). Three types of exine sculpture are recognized in the genus: type I – psilate-perforate, type II – microechinate-nanoechinate, and type III – echinate-microechinate-nanoechinate. Within these pollen types, seven subtypes are distinguished based on details of the exine sculpture, pollen size, details of colpi, and presence/absence and width of annuli. It has been established that the important diagnostic features at the species level for the purposes of taxonomy of Symphoricarpos are the size of pollen grains, details of the colpi and ores, presence/absence and width of the annuli, and exine sculpture. The pollen morphology of Symphoricarpos taxa allows the establishment of hypotheses regarding the evolution of exine sculpture. In particular, we assume that there is an evolutionary trend toward a decrease in the size and number of echini and microechini. Echinate-microechinate-nanoechinate exine sculpture is hypothesized to be a plesiomorphic condition within the genus Symphoricarpos.
    Keywords Lonicera ; Symphoricarpos ; electron microscopy ; exine ; herbaria ; light microscopy ; palynology ; phylogeny ; pollen ; pollen morphology ; pollen size ; taxonomy ; exine sculpture ; diagnostic features ; SEM analysis
    Language English
    Dates of publication 2022-1002
    Size p. 1-14.
    Publishing place Taylor & Francis
    Document type Article ; Online
    ZDB-ID 2179197-1
    ISSN 1558-9188 ; 0191-6122
    ISSN (online) 1558-9188
    ISSN 0191-6122
    DOI 10.1080/01916122.2022.2052993
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  2. Article ; Online: The unique type of pollen grain of Dasistoma (Macranthera-Agalinis clade; Orobanchaceae): implications for taxonomy

    Tsymbalyuk, Zoya M. / Nitsenko, Lyudmila M. / Mosyakin, Sergei L.

    Grana. 2022 Nov. 02, v. 61, no. 6 p.436-447

    2022  

    Abstract: Pollen morphology of six species from the Macranthera-Agalinis clade (Orobanchaceae) was studied using both light microscopy and scanning electron microscopy. Pollen grains are (2-)3(4-)-colpate, 3-brevicolpate and 4-, rarely 6-porate, obtate to prolate ( ...

    Abstract Pollen morphology of six species from the Macranthera-Agalinis clade (Orobanchaceae) was studied using both light microscopy and scanning electron microscopy. Pollen grains are (2-)3(4-)-colpate, 3-brevicolpate and 4-, rarely 6-porate, obtate to prolate (P/E = 0.72–1.52) in shape; medium-sized and rarely large-sized (P = 26.60–50.54 µm, E = 22.61–47.88 µm). Three pollen types are found and described based on the pollen grain size, length of the colpi, exine thickness, exine sculpture, columellae length and thickness and nanogemmae size. Type III contains three subtypes differentiated by pollen grain size, length of the colpi, exine thickness, exine sculpture, columellae length and nanogemmae size. Unweighted pair group method with arithmetic mean (UPGMA) dendrograms based on palynological data support that Dasistoma macrophylla has unique morphological and morphometric characters. In D. macrophylla we observed a transition from the 3-brevicolpate type to the 4-porate and occasionally 6-porate type. This polymorphism with respect to apertures may provide an advantage for D. macrophylla to survive under different ecological conditions and on a wide range of hosts. Palynomorphological data are interpreted in the existing phylogenetic framework. The 3-colpate type of apertures and a nanogemmate exine sculpture are hypothesised to be the plesiomorphic condition within the Macranthera-Agalinis clade.
    Keywords Orobanchaceae ; electron microscopy ; exine ; grana ; light microscopy ; morphometry ; palynology ; phylogeny ; pollen ; pollen morphology ; taxonomy ; exine sculpture ; diagnostic features ; SEM-analysis
    Language English
    Dates of publication 2022-1102
    Size p. 436-447.
    Publishing place Taylor & Francis
    Document type Article ; Online
    ZDB-ID 2016533-X
    ISSN 1651-2049
    ISSN 1651-2049
    DOI 10.1080/00173134.2022.2130008
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  3. Article: Pollen morphology of Ellisiophyllum and Sibthorpia (Plantaginaceae, tribe Sibthorpieae) and phylogenetics of the tribe

    Albach, Dirk C. / Tsymbalyuk, Zoya M. / Mosyakin, Sergei L.

    Plant systematics and evolution. 2021 Dec., v. 307, no. 6

    2021  

    Abstract: Pollen morphology of six species belonging to genera Ellisiophyllum and Sibthorpia (Plantaginaceae tribe Sibthorpieae) was studied using light and scanning electron microscopy. The data were analyzed in the light of the first phylogenetic analysis ... ...

    Abstract Pollen morphology of six species belonging to genera Ellisiophyllum and Sibthorpia (Plantaginaceae tribe Sibthorpieae) was studied using light and scanning electron microscopy. The data were analyzed in the light of the first phylogenetic analysis including all but one species of the tribe using DNA sequence data from nuclear ribosomal (ITS) and plastid trnL-F region. Pollen grains in representatives of this tribe are 3-colpate, occasionally 3-porate, suboblate to prolate; mainly medium-sized, rarely small. One major pollen type (3-colpate) is recognized in the tribe. Within this pollen type, six subtypes are distinguished based on their exine sculpture, pollen grain size, length of the apertures, and exine thickness. The obtained results confirm that pollen characters are useful for species identification. Palynomorphological data are consistent with the results of the molecular phylogenetic analyses. All studies support a sister relationship of the widespread European Sibthorpia europaea with the widespread South American Sibthorpia repens and a sister relationship of two insular species, the Balearic Sibthorpia africana and the Madeiran Sibthorpia peregrina. Pollen grains in the tribe Sibthorpieae have both reticulate exine sculpture characteristic for representatives of the Russelieae–Cheloneae–Antirrhineae clades of Plantaginaceae, and also nanoechinate sculpture, which is typical for the Veroniceae and Plantagineae clades of that family. Also, in Sibthorpia repens, we observe a possible transition from the colpate type to the porate type typical for taxa of Plantago and Littorella.
    Keywords Littorella ; Plantago ; exine ; phylogeny ; plant taxonomy ; pollen ; pollen morphology ; species identification
    Language English
    Dates of publication 2021-12
    Size p. 66.
    Publishing place Springer Vienna
    Document type Article
    ZDB-ID 1463027-8
    ISSN 1615-6110 ; 0378-2697
    ISSN (online) 1615-6110
    ISSN 0378-2697
    DOI 10.1007/s00606-021-01786-9
    Database NAL-Catalogue (AGRICOLA)

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  4. Article ; Online: Taxonomic significance of pollen morphology in Succisa and Succisella

    Tsymbalyuk Zoya M. / Mosyakin Sergei L. / Nitsenko Lyudmila M.

    Biodiversity: Research and Conservation, Vol 55, Iss 1, Pp 1-

    2019  Volume 6

    Abstract: Pollen morphology of representatives of the genera Succisa and Succisella in the flora of Ukraine was studied using light and scanning electron microscopy. Pollen grains in both taxa were tricolpate, prolate, rarely oblate-spheroidal or spheroidal; large- ...

    Abstract Pollen morphology of representatives of the genera Succisa and Succisella in the flora of Ukraine was studied using light and scanning electron microscopy. Pollen grains in both taxa were tricolpate, prolate, rarely oblate-spheroidal or spheroidal; large-sized. Their outline in polar view was subcircular, rarely trilobate, in equatorial view elliptical or rarely circular. Colpi short, of variable width, margins irregular with distinct, narrow margo, and blunt or acute ends. Exine sculpture was echinate-microechinate. The revealed characteristics of pollen grains are taxonomically significant at the generic and specific levels, and they can be used in pollen analysis. Palynomorphological data are consistent with the results of recent molecular phylogenetic studies. Data on pollen morphology also confirm taxonomic circumscription of Succiseae V. Mayer & Ehrend. Pollen grains in Succiseae are characterized by a tricolpate aperture type, which was probably ancestral in Dipsacaceae s. str.
    Keywords pollen grains ; morphology ; sculpture ; diagnostic characters ; taxonomy ; ukraine ; Biology (General) ; QH301-705.5
    Subject code 333 ; 580
    Language English
    Publishing date 2019-09-01T00:00:00Z
    Publisher Sciendo
    Document type Article ; Online
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  5. Article ; Online: Pollen morphology of some species of the genus Cephalaria Schrad. (Caprifoliaceae) and its significance for taxonomy.

    Tsymbalyuk, Zoya M / Celenk, Sevcan / Mosyakin, Sergei L / Nitsenko, Lyudmila M

    Microscopy research and technique

    2020  Volume 84, Issue 4, Page(s) 682–694

    Abstract: Palynology gives the evidence for identification and elimination of taxonomically complex genera. Pollen morphology of nine species (three subg., three sect.) of the genus Cephalaria Schrad. was studied using light microscopy and scanning electron ... ...

    Abstract Palynology gives the evidence for identification and elimination of taxonomically complex genera. Pollen morphology of nine species (three subg., three sect.) of the genus Cephalaria Schrad. was studied using light microscopy and scanning electron microscopy. Pollen grains of all investigated species are triporate, suboblate to subprolate (P/E = 0.75-1.28), and large-sized (P = 58.52 μm-114.38, E = 63.84-119.70 μm). The outline of pollen grains in equatorial view is circular or elliptic, in polar view circular, circular-triangular, or triangular. Pores are distinct, lolongate, elliptic, or circular, with an annulus, operculum, and distinct or indistinct, wide halo surrounding the aperture. Exine sculpture is echinate-microechinate or echinate-microechinate-nanoechinate. Additional diagnostic characters at the species level in Cephalaria Schrad. that can be used for the purposes of taxonomy are size of pollen grains and pores, the shape of pores, the width of the annulus, structure of the exine, dimension of echini and microechini, location of microechini, and presence/absence of nanoechini. Palynomorphological data are compared with the taxonomical classification system of investigated taxa. It is shown that pollen grains morphology of the genus Cephalaria Schrad. is similar to the pollen morphology of the genus Dipsacus L., which confirms their inclusion in the Dipsaceae tribe.
    MeSH term(s) Caprifoliaceae ; Dipsacaceae ; Microscopy, Electron, Scanning ; Pollen
    Language English
    Publishing date 2020-10-26
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1099714-3
    ISSN 1097-0029 ; 1059-910X
    ISSN (online) 1097-0029
    ISSN 1059-910X
    DOI 10.1002/jemt.23627
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article: Pollen morphology of the southern African tribe Teedieae, an early-branching lineage of crown Scrophulariaceae

    Mosyakin, Sergei L. / Tsymbalyuk, Zoya M.

    Willdenowia. 2015 Mar., v. 45, no. 1

    2015  

    Abstract: Mosyakin S. L. & Tsymbalyuk Z. M.: Pollen morphology of the southern African tribe Teedieae, an early-branching lineage of crown Scrophulariaceae. — Willdenowia 45: 65–75. 2015. — Version of record first published online on 13 March 2015 ahead of ... ...

    Abstract Mosyakin S. L. & Tsymbalyuk Z. M.: Pollen morphology of the southern African tribe Teedieae, an early-branching lineage of crown Scrophulariaceae. — Willdenowia 45: 65–75. 2015. — Version of record first published online on 13 March 2015 ahead of inclusion in April 2015 issue; ISSN 1868-6397; © 2015 BGBM Berlin-Dahlem. DOI: http://dx.doi.org/10.3372/wi.45.45107 The pollen morphology of seven species representing four genera of the tribe Teedieae (Scrophulariaceae) is described and illustrated using light microscopy (LM) and scanning electron microscopy (SEM). Two major pollen types, 3-colporate and 4-colporate, are recognized by aperture types. Within these pollen types, subtypes are distinguished based on exine sculpture, colpi, colpus membrane, and endoaperture characters. Within type I (3-colporate), three subtypes are recognized: Ia — sculpture psilate, rarely with microperforations; Ib — sculpture microperforate and microreticulate; and Ic — sculpture macroreticulate. Type II (4-colporate) is represented by only one subtype IIa — sculpture psilate, rough, and foveolate. The revealed characteristics of pollen grains are taxonomically significant at the generic and specific levels. Our palynomorphological data are consistent with the results of molecular phylogenetic studies. Pollen grains in Teedieae are typically characterized by the colporate aperture type (probably ancestral in Scrophulariaceae) and rather primitive characters of surface and sculpture of colpi membranes. Similar palynomorphological patterns in Teedieae and Buddlejeae can be viewed as ancestral for pollen characters observed in more advanced clades of Scrophulariaceae.
    Keywords Scrophulariaceae ; Willdenowia ; pollen morphology
    Language English
    Dates of publication 2015-03
    Size p. 65-75.
    Publishing place Botanic Garden and Botanical Museum Berlin-Dahlem (BGBM)
    Document type Article
    ZDB-ID 2177080-3
    ISSN 1868-6397 ; 0511-9618 ; 0374-8960
    ISSN (online) 1868-6397
    ISSN 0511-9618 ; 0374-8960
    DOI 10.3372/wi.45.45107
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  7. Article: Pollen morphology of tribes Aptosimeae and Myoporeae supports the phylogenetic pattern in early-branching Scrophulariaceae revealed by molecular studies

    Mosyakin, Sergei L / Tsymbalyuk Zoya M

    Willdenowia. 2015 July, v. 45, no. 2

    2015  

    Abstract: Mosyakin S. L. & Tsymbalyuk Z. M.: Pollen morphology of tribes Aptosimeae and Myoporeae supports the phylogenetic pattern in early-branching Scrophulariaceae revealed by molecular studies. — Willdenowia 45: 209–222. 2015. — Version of record first ... ...

    Abstract Mosyakin S. L. & Tsymbalyuk Z. M.: Pollen morphology of tribes Aptosimeae and Myoporeae supports the phylogenetic pattern in early-branching Scrophulariaceae revealed by molecular studies. — Willdenowia 45: 209–222. 2015. — Version of record first published online on 15 July 2015 ahead of inclusion in August 2015 issue; ISSN 1868-6397; © 2015 BGBM Berlin.DOI: http://dx.doi.org/10.3372/wi.45.45207Pollen morphology of six species representing three genera of tribe Aptosimeae and six species representing two genera of tribe Myoporeae (Scrophulariaceae) is described and illustrated using light microscopy (LM) and scanning electron microscopy (SEM). Pollen grains in Aptosimeae are 3-syncolporate, prolate, sometimes oblate-spheroidal in shape; mainly medium-sized, occasionally in some taxa small; exine sculpture striate, rarely with microperforations and small granules. Pollen grains in Myoporeae are 3-colpate-diorate, spheroidal, rarely oblate-spheroidal or prolate in shape; mainly medium-sized, occasionally in some taxa small; exine sculpture foveolate, microreticulate, rugulate-microperforate, rugulate, sometimes with small granules. Two major pollen types, 3-syncolporate (Aptosimeae) and 3-colpate-diorate (Myoporeae) are recognized by aperture types. Within these pollen types, eight subtypes are distinguished (three in Aptosimeae, five in Myoporeae) based on pollen size, exine sculpture and details of colpi and endoapertures. Our analysis of palynomorphological data (both published earlier and newly reported here) outlines the same main clades as those revealed by molecular phylogenetic studies, corresponding to Aptosimeae, Leucophylleae+Myoporeae and Androya, which differ by their pollen aperture types: 3-syncolporate, 3-colpate-diorate, and 3-colporate, respectively. There are also some differences in exine sculpture patterns. Thus, palynomorphological data are mainly consistent with recent results of molecular phylogenetic studies. Considerations on ancestral pollen character states in early-branching Scrophulariaceae are provided. It is assumed that the colporate type was probably ancestral in Scrophulariaceae; however, the ancestral status of the colpate type cannot be excluded as well.
    Keywords phylogeny ; pollen ; Scrophulariaceae
    Language English
    Dates of publication 2015-07
    Size p. 209-222.
    Publishing place Botanic Garden and Botanical Museum Berlin-Dahlem (BGBM)
    Document type Article
    ZDB-ID 2177080-3
    ISSN 1868-6397 ; 0511-9618 ; 0374-8960
    ISSN (online) 1868-6397
    ISSN 0511-9618 ; 0374-8960
    DOI 10.3372%2Fwi.45.45207
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  8. Article ; Online: Pollen morphology of Ukrainian species of the genus Pedicularis L. (Orobanchaceae Vent.)

    Peregrym Olena M. / Tsymbalyuk Zoya M. / Mosyakin Sergei L.

    Biodiversity: Research and Conservation, Vol 24, Iss 2011, Pp 5-

    2012  Volume 13

    Abstract: Pollen grains of 10 species of Pedicularis occurring in Ukraine were investigated using light and scanning electron microscopy. Palynological data on 6 species are reported for the first time. General pollen morphology of the genus Pedicularis is ... ...

    Abstract Pollen grains of 10 species of Pedicularis occurring in Ukraine were investigated using light and scanning electron microscopy. Palynological data on 6 species are reported for the first time. General pollen morphology of the genus Pedicularis is presented. Three types of apertures (2-syncolpate, 3-colpate, and 3-syncolpate) and seven subtypes of sculpture (3-syncolpate pilate, 3-syncolpate microscabrate-tubeculate, 2-syncolpate microscabrate, 2-syncolpate microscabrate-tubeculate, 2-syncolpate microscabrate-tubeculate-perforate, 2-syncolpate microfoveolate, and 2-syncolpate microscabrate-perforate) are indentified. The subgenus Pedicularis is heterogeneous in its types of apertures and sculpture of the surface, which indicates the need of further taxonomic revision of the group.
    Keywords pollen morphology ; taxonomy ; pedicularis ; orobanchaceae ; ukraine ; Biology (General) ; QH301-705.5
    Language English
    Publishing date 2012-09-01T00:00:00Z
    Publisher Sciendo
    Document type Article ; Online
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