On the Taxonomy, Reproduction, and Distribution of the Diatom Nitzschia longissima (Brèb.) Grunow (Bacillariophyta)

Shorenko, K. I.; Давидович, О. И.; Давидович, Н. А.

doi:10.1615/interjalgae.v16.i1.10

Cited by 3 publications

(5 citation statements)

References 26 publications

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“…Finally, a group of key factors are represented by environmental conditions, such as temperature, irra diance, photoperiod, light spectral quality, and salinity [12,13,[47][48][49][50]. Sexual reproduction can be stimu lated or inhibited under the influence of one or several factors; therefore, each algal species requires optimal conditions.…”

Section: Factors Initiating Sexual Reproductionmentioning

confidence: 99%

Reproductive properties of diatoms significant for their cultivation and biotechnology

Давидович

Podunai

et al. 2015

Russ J Plant Physiol

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Unicellular algae and diatoms (Bacillariophyta) in particular, have attracted increasing attention as the objects of biotechnology. Diatoms are known to produce mucopolysaccharides, fats, and fat like sub stances suitable for production of biodiesel, unusual pigments (e. g., marennine), and nanosized siliceous structures. It should be noted that only few diatom species out of great number living on the Earth are used in biotechnology. About 100000 species of diatoms occur in nature. The use of diatoms in biotechnology is restricted by little studied life cycle and biology of reproduction. This review summarizes data on biological properties of diatoms, which should be taken into account when they are used as the objects of culturing and particularly as clones.

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Section: Factors Initiating Sexual Reproductionmentioning

confidence: 99%

Reproductive properties of diatoms significant for their cultivation and biotechnology

Давидович

Podunai

et al. 2015

Russ J Plant Physiol

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“…The absence of clear morphological differences between N. longissima and N. rectilonga until recently brings into question the assumption of migration of N. Rectilonga. It is known [3,5,10,16,17,21] that both species have a wide sympatric distribution in the World Ocean. It follows from the experience of field works that were conducted by the authors in 2010-2012 that in Black Sea benthic samples, N. rectilonga occurs more frequently than N. longissima.…”

Section: Discussion Of Resultsmentioning

confidence: 99%

“…Their reproduction is morphologically and physiologically heterogametic and, according to Geitler's classification [13], corresponds to type IA2. The pattern of the sexual reproduction of N. longissima has been described [1,4,5,14,15], while the reproduction of N. rectilonga remained uninvestigated. Three N. rectilonga clones (1.1005-B, 1.1005-C, and 1.1005-D) were used to study the details of the sexual process.…”

Section: Morphologicalmentioning

confidence: 99%

“…Their original [18], while for N. rectilonga, the Aichi prefecture on Lake Honshu (the Pacific coast of Japan) serves as a type locality [23]. According to the data of literature sources [3,5,11,12,16,17,21,23], the occurrence of the species, and the range of their natural habitats are different. The species N. longissima is common, with a wide natural habitat including distribution in marine and ocean coastal waters over almost the entire globe [5].…”

Section: Morphologicalmentioning

confidence: 99%

“…According to the data of literature sources [3,5,11,12,16,17,21,23], the occurrence of the species, and the range of their natural habitats are different. The species N. longissima is common, with a wide natural habitat including distribution in marine and ocean coastal waters over almost the entire globe [5]. The species N. rectilonga is mentioned much more rarely, and, in addition, its area was initially restricted to a few gulfs of Lake Honshu [12,17,23].…”

Section: Morphologicalmentioning

confidence: 99%

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The species boundaries and biogeography of two closely related diatom species: Nitzschia longissima (Bréb.) Grunow, 1862 and N. rectilonga Takano, 1983

et al. 2016

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Abstracts-The species boundaries and biogeography of two closely related diatom species, Nitzschia longissima (Bréb.) Grunow and N. rectilonga Takano, are described. Based on the structure and morphological features of frustule valves, a reliable distance between these two species has been determined. It is shown that there is a reproductive barrier between the two species. The distribution of N. longissima and N. rectilonga and the range and character of their natural habitats have been analyzed.

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Оптимумы солёности для вегетативного размножения и полового воспроизведения диатомовой водоросли Toxarium undulatum

Давидович¹,

Давидович²

2020

mbj

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Distribution of diatom algae is limited by their tolerance to environmental factors. Although a genus Toxarium has been evolving for more than 100 million years, it is represented by only two species. Toxarium undulatum is widely spread in tropical and subtropical seas, and it can be also found in the Black Sea, the salinity of which is twice lower than the oceanic one. Ecological and psychological characteristics research of this species is of great interest in terms of its relationship to salinity. T. undulatum clonal cultures were sampled in the Donuzlav Lake connected to the Black Sea (southwest of the Crimean Peninsula) and on Gran Canaria coast (Canary Islands archipelago). Experiments on the salinity tolerance limits showed, that the Black Sea clones were viable in a range of at least 30 ‰ (12 to 42 ‰). The same wide range of salinity tolerance with slightly higher values was observed among oceanic clones of this species. Optima of vegetative growth and sexual reproduction were determined. Optima of the Black Sea clones appeared to be 27.8 and 27.2 ‰, respectively, which was significantly higher than salinity observed in population habitat. Similar higher optima of vegetative growth and sexual reproduction, compared with those salinity values, at which natural population developed, were observed for a number of other Black Sea diatoms, which proved their oceanic (Mediterranean) origin. It was concluded that T. undulatum, along with other species, began to populate the Black Sea basin about seven thousand years ago after Mediterranean Sea water started to flow into the freshened Novoevksinsky Sea-Lake through the Bosporus Strait. However, the evolution rate did not allow bringing physiological and ecological characteristics of the species studied into full agreement with environmental conditions. Oceanic origin is evidently seen in its physiological reactions to salinity. Possibility of speciation due to settlement of the Black Sea with oceanic species is discussed.

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On the Taxonomy, Reproduction, and Distribution of the Diatom Nitzschia longissima (Brèb.) Grunow (Bacillariophyta)

Cited by 3 publications

References 26 publications

Reproductive properties of diatoms significant for their cultivation and biotechnology

Reproductive properties of diatoms significant for their cultivation and biotechnology

The species boundaries and biogeography of two closely related diatom species: Nitzschia longissima (Bréb.) Grunow, 1862 and N. rectilonga Takano, 1983

Оптимумы солёности для вегетативного размножения и полового воспроизведения диатомовой водоросли Toxarium undulatum

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