Publications by authors named "Maxim S Kulikovskiy"

9 Publications

  • Page 1 of 1

Two new species of (Bacillariophyta) from Southeast Asia.

PhytoKeys 2022 18;190:69-85. Epub 2022 Feb 18.

Museum of Natural History, Boulder, Colorado, 80309, USA Museum of Natural History Boulder United States of America.

We present light and scanning electron microscopical observations on two new species of Bory sensu stricto from Southeast Asia. Chudaev, Glushchenko, Kulikovskiy & Kociolek, differs from taxa with similar outline and size by the combination of simple drop-like external raphe endings deflected to the primary valve side, presence of well-developed external longitudinal grooves and relatively low lineolae density. Chudaev, Glushchenko, Kulikovskiy & Kociolek, can be discriminated from the taxa of similar valve shape and size by consistently lower lineolae density, and from the majority of them also by the structure of external proximal raphe endings with small projections in proximal parts and larger triangular insertions in distal parts. Some remarks on species diversity and its distribution in the Southeast Asia are given.
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http://dx.doi.org/10.3897/phytokeys.190.78164DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8881437PMC
February 2022

 sp. nov. (Bacillariophyceae, Achnanthidiaceae), a new diatom from the Lake Bratan (Bali, Indonesia).

PhytoKeys 2022 21;188:167-175. Epub 2022 Jan 21.

Timiryazev Institute of Plant Physiology, Russian Academy of Sciences, 127276, Moscow, Russia Timiryazev Institute of Plant Physiology, Russian Academy of Sciences Moscow Russia.

A new species, , is described from Lake Bratan, located on the island of Bali (Indonesia). The morphology of this species was analyzed with light (LM) and scanning electron microscopy (SEM). is characterized by linear-elliptic to nearly elliptic valves with convex margins and rounded, broadly subcapitate apices. The striae of this species are hardly discernable under LM; they are weakly radiate throughout the valve and composed of one to four large transapically elongated areolae of different length and shape. The most similar taxon to is , a species described from Sumatra, another Indonesian island. The differences of from similar taxa are discussed.
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http://dx.doi.org/10.3897/phytokeys.188.77882DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8799627PMC
January 2022

 sp. nov. (Bacillariophyceae) - a new monoraphid diatom species from Indonesia.

PhytoKeys 2021 17;187:129-140. Epub 2021 Dec 17.

K.A. Timiryazev Institute of Plant Physiology RAS, IPP RAS, 35 Botanicheskaya St., Moscow, 127276, Russia.

A new monoraphid diatom species is described from Indonesia. The description is based on molecular data (18SV4), morphological analysis and comparison with similar species. According to molecular data, sp. nov. is closely related to . Morphologically, the new species differs from similar species by the absence of a fascia on raphe valve, cell size, and striae density and pattern. The new species is only known from the type locality in Indonesia. Comparison with close related species is given.
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http://dx.doi.org/10.3897/phytokeys.187.73913DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8709835PMC
December 2021

Optimization of Biomass Accumulation and Production of Phenolic Compounds in Callus Cultures of L. Using Design of Experiments.

Plants (Basel) 2022 Jan 2;11(1). Epub 2022 Jan 2.

Central Siberian Botanical Garden, Siberian Branch of Russian Academy of Sciences, 630090 Novosibirsk, Russia.

L. is a valuable medicinal plant with adaptogenic, neuroprotective, antitumor, cardioprotective, and antidepressant effects. In this study, design of experiments methodology was employed to analyze and optimize the interacting effects of mineral compounds (concentration of NO and the ratio of NH to K) and two plant growth regulators [total 6-benzylaminopurine (BAP) and α-naphthylacetic acid (NAA) concentration and the ratio of BAP to NAA] on the growth and the production of total phenolic compounds (TPCs) in calluses. The overall effect of the model was highly significant ( < 0.0001), indicating that NH, K, NO, BAP, and NAA significantly affected growth. The best callus growth (703%) and the highest production of TPCs (75.17 mg/g) were achieved at an NH/K ratio of 0.33 and BAP/NAA of 0.33, provided that the concentration of plant growth regulators was 30 μM and that of NO was ≤40 mM. According to high-performance liquid chromatography analyses of aerial parts (leaves and stems), in vitro seedlings and callus cultures of contain no detectable rosarin, rosavin, rosin, and cinnamyl alcohol. This is the first report on the creation of an experiment for the significant improvement of biomass accumulation and TPC production in callus cultures of .
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http://dx.doi.org/10.3390/plants11010124DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8747766PMC
January 2022

Investigation of Chemical Constituents of (Ranunculaceae): Coumarins and Furochromones.

Int J Mol Sci 2021 Dec 30;23(1). Epub 2021 Dec 30.

Central Siberian Botanical Garden, Siberian Branch of Russian Academy of Sciences, CSBG SB RUS, 630090 Novosibirsk, Russia.

Aqueous-ethanol extracts (70%) from the leaves of Regel. (Ranunculaceae Juss.)-collected from natural populations of Kyrgyzstan-were studied by liquid chromatography with high-resolution mass spectrometry (LC-HRMS). There was no variation of the metabolic profiles among plants that were collected from different populations. More than 160 compounds were found in the leaves, of which 72 were identified to the class level and 58 to the individual-compound level. The class of flavonoids proved to be the most widely represented (19 compounds), including six aglycones [quercetin, kaempferol, aromadendrin, 6-methoxytaxifolin, phloretin, and (+)-catechin] and mono- and diglycosides (the other 13 compounds). In the analyzed samples of , 14 fatty acid-related compounds were identified, but coumarins and furochromones that were found in were the most interesting result; furochromones khelloside, khellin, visnagin, and cimifugin were found in for the first time. Coumarins 5,7-dihydroxy-4-methylcoumarin, scoparone, fraxetin, and luvangetin and furochromones methoxsalen, 5--methylvisammioside, and visamminol-3'-O-glucoside were detected for the first time in the genus Salisb. For all the above compounds, the structural formulas are given. Furthermore, detailed information (with structural formulas) is provided on the diversity of chromones and furochromones in other representatives of . The presence of chromones in plants of the genus confirms its closeness to the genus L. because chromones are synthesized by normal physiological processes only in these members of the Ranunculaceae family.
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http://dx.doi.org/10.3390/ijms23010406DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8745120PMC
December 2021

Multi-Element Composition of Diatom spp. from Natural Phytoplankton Assemblages of the Russian Arctic Seas.

Biology (Basel) 2021 Oct 8;10(10). Epub 2021 Oct 8.

Laboratory of Molecular Systematics of Aquatic Plants, Timiryazev Institute of Plant Physiology, Russian Academy of Sciences (IPP RAS), Botanicheskaya St. 35, 127276 Moscow, Russia.

Data on the elemental composition of the diatom spp. from natural phytoplankton communities of Arctic marine ecosystems are presented for the first time. Samples were collected during the 69th cruise (22 August-26 September 2017) of the R/V Akademik Mstislav Keldysh in the Kara, Laptev, and East Siberian Seas. The multi-element composition of the diatom microalgae was studied by ICP-AES and ICP-MS methods. The contents of major (Na, Mg, Al, Si, P, S, K and Ca), trace (Li, Be, B, Ti, V, Cr, Mn, Co, Ni, Cu, Zn, Ga, As, Se, Rb, Sr, Mo, Ag, Cd, Sn, Sb, Cs, Ba, Hg, Tl, Pb, Bi, Th and U) and rare earth (Sc, Y, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu) elements varied greatly, which was probably associated with the peculiarities of the functional state and mineral nutrition of phytoplankton in the autumn period. Biogenic silicon was the dominant component of the chemical composition of spp., averaging 19.10 ± 0.58% of dry weight (DW). Other significant macronutrients were alkaline (Na and K) and alkaline earth (Ca and Mg) metals as well as biogenic (S and P) and essential (Al and Fe) elements. Their total contents varied from 1.26 to 2.72% DW, averaging 2.07 ± 0.43% DW. The Al:Si ratio for natural assemblages of spp. of the shelf seas of the Arctic Ocean was 5.8 × 10. The total concentrations of trace and rare earth elements on average were 654.42 ± 120.07 and 4.14 ± 1.37 μg g DW, respectively. We summarize the scarce data on the average chemical composition of marine and oceanic phytoplankton and discuss the limitations and approaches of such studies. We conclude on the lack of data and the need for further targeted studies on this issue.
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http://dx.doi.org/10.3390/biology10101009DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8533213PMC
October 2021

sp. nov. (Bacillariophyceae, Cymbellales), a new diatom from the ancient lake Matano (Sulawesi, Indonesia).

PhytoKeys 2021 17;175:1-11. Epub 2021 Mar 17.

Timiryazev Institute of Plant Physiology, Russian Academy of Sciences, 127276, Moscow, Russia Timiryazev Institute of Plant Physiology, Russian Academy of Sciences Moscow Russia.

A new species, , is described from the ancient lake Matano, Sulawesi island, Indonesia. The morphology of this species was studied by means of light and scanning electron microscopy. has a remarkable valve ultrastructure. The valve surface is ornamented with numerous longitudinal siliceous ribs and siliceous verrucae. Valve face delineated from the mantle by a thickened marginal ridge. Raised sterna border the raphe branches. Raphe is distinctly undulate with distal ends hooked strongly to the ventral side. The only similar species to is described from New Caledonia. Comparison of both taxa is given and is transferred to . The taxonomic placement of both taxa is evaluated, and the phenomenon of external siliceous ornamentation is discussed.
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http://dx.doi.org/10.3897/phytokeys.175.61044DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7990855PMC
March 2021

sp. nov. - a new monoraphid diatom (Bacillariophyceae) species, described on the basis of molecular and morphological approaches.

PhytoKeys 2021 12;174:147-163. Epub 2021 Mar 12.

K.A. Timiryazev Institute of Plant Physiology RAS, IPP RAS, 35 Botanicheskaya St., Moscow, 127276, Russia.

A new monoraphid diatom species Tseplik, Kulikovskiy, Kociolek & Maltsev, is described from Indonesia. The species is described on the basis of molecular and morphological analyses. According to molecular data the new species belongs to the clade that includes strains of , and . Morphologically, the new species differs quite significantly from other species of the same genus because of linear-elliptic valves with almost parallel sides and strongly radiate striae and a butterfly-shaped fascia on the raphe valve. The morphology and phylogeny of the new species are discussed, and thoughts on the current state of the taxonomy of the genus are expressed. Our work shows the importance of using molecular data in diatom systematics and also demonstrates the need to investigate rarely studied regions of our planet.
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http://dx.doi.org/10.3897/phytokeys.174.60337DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7979678PMC
March 2021

Four new species from the diatom (Bacillariophyceae) genus Moser, Lange-Bertalot & Metzeltin from waterbodies of Vietnam.

PhytoKeys 2020 7;162:13-27. Epub 2020 Oct 7.

K. A. Timiryazev Institute of Plant Physiology RAS, IPP RAS, 35 Botanicheskaya St., Moscow, 127276, Russia.

Four species of the diatom genus were found from waterbodies of Vietnam and described as new to science. Their formal descriptions are presented herein and they are illustrated by light and scanning electron micrographs. These new species are: Glushch., Kulik. & Kociolek, , Glushch., Kulik. & Kociolek, , Glushch., Kulik. & Kociolek, and Glushch., Kulik. & Kociolek, These species are then compared to other similar taxa. Our new findings add to the number of species in this interesting genus and contribute to our understanding of the unique diatom flora found in Vietnam.
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http://dx.doi.org/10.3897/phytokeys.162.57657DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7557529PMC
October 2020
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