Chloropyrula uraliensis gen. et sp. nov. (Trebouxiophyceae, Chlorophyta), a new green coccoid alga with a unique ultrastructure, isolated from soil in South Urals
Identifieur interne : 000429 ( Main/Exploration ); précédent : 000428; suivant : 000430Chloropyrula uraliensis gen. et sp. nov. (Trebouxiophyceae, Chlorophyta), a new green coccoid alga with a unique ultrastructure, isolated from soil in South Urals
Auteurs : Lira Gaysina [Russie] ; Yvonne N Mcová [République tchèque] ; Pavel Škaloud [République tchèque] ; Tereza Šev Ková [République tchèque] ; Marek Eliáš [République tchèque]Source :
- Journal of Systematics and Evolution [ 1674-4918 ] ; 2013-07.
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Abstract
Soil hosts diverse communities of photosynthetic eukaryotes (algae) that have not yet been fully explored. Here we describe an interesting coccoid green alga isolated from a soil sample from a forest‐steppe in South Urals (Bashkortostan, Russia) that, based on a phylogenetic analysis of 18S rRNA gene sequence, appears to represent a new phylogenetic lineage related to the genus Leptosira within the class Trebouxiophyceae. This new alga is characterized by uninucleate cells with a shape ranging from spherical to ellipsoid or egg‐like, occurring solitary or more often grouped in irregular masses or colonies. Remarkably, cells with a characteristic pyriform shape are encountered in cultures grown on a solid medium. The cells harbour a single pyrenoid‐lacking parietal chloroplast with the margin undulated or forming finger‐like projections; in mature cells the chloroplast becomes divided by deep incisions into more or less separate lobes. Transmission electron microscopy of vegetative cells revealed an unprecedented structure in the form of a cluster of microfibrils located in the cytoplasm near the plasma membrane, often appressed to the chloroplast. Reproduction takes place via autospores or biflagellated zoospores. The unique suite of characters of our isolate distinguishes it from previously described coccoid green algae and suggests that it should be classified as a new species in a new genus; we propose it be named Chloropyrula uraliensis.
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DOI: 10.1111/jse.12014
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(Trebouxiophyceae, Chlorophyta), a new green coccoid alga with a unique ultrastructure, isolated from soil in South Urals</title><author><name sortKey="Gaysina, Lira" sort="Gaysina, Lira" uniqKey="Gaysina L" first="Lira" last="Gaysina">Lira Gaysina</name><affiliation wicri:level="1"><country xml:lang="fr">Russie</country><wicri:regionArea>Department of Botany, Bioecology and Landscape Design, Bashkir State Pedagogical University named after M. Akmullah, Oktyabrskoy Revolucii St., 3a, Ufa 450000</wicri:regionArea><wicri:noRegion>Ufa 450000</wicri:noRegion></affiliation></author><author><name sortKey="N Mcova, Yvonne" sort="N Mcova, Yvonne" uniqKey="N Mcova Y" first="Yvonne" last="N Mcová">Yvonne N Mcová</name><affiliation wicri:level="3"><country xml:lang="fr">République tchèque</country><wicri:regionArea>Faculty of Science, Department of Botany, Charles University in Prague, Benatska 2, 128 01, Prague</wicri:regionArea><placeName><settlement type="city">Prague</settlement><region type="région" nuts="2">Bohême centrale</region></placeName></affiliation></author><author><name sortKey="Skaloud, Pavel" sort="Skaloud, Pavel" uniqKey="Skaloud P" first="Pavel" last="Škaloud">Pavel Škaloud</name><affiliation wicri:level="3"><country xml:lang="fr">République tchèque</country><wicri:regionArea>Faculty of Science, Department of Botany, Charles University in Prague, Benatska 2, 128 01, Prague</wicri:regionArea><placeName><settlement type="city">Prague</settlement><region type="région" nuts="2">Bohême centrale</region></placeName></affiliation></author><author><name sortKey="Sev Kova, Tereza" sort="Sev Kova, Tereza" uniqKey="Sev Kova T" first="Tereza" last="Šev Ková">Tereza Šev Ková</name><affiliation wicri:level="1"><country xml:lang="fr">République tchèque</country><wicri:regionArea>Faculty of Science, Department of Biology and Ecology, University of Ostrava, Chittussiho 10, 710 00, Ostrava</wicri:regionArea><wicri:noRegion>Ostrava</wicri:noRegion></affiliation></author><author><name sortKey="Elias, Marek" sort="Elias, Marek" uniqKey="Elias M" first="Marek" last="Eliáš">Marek Eliáš</name><affiliation wicri:level="3"><country xml:lang="fr">République tchèque</country><wicri:regionArea>Faculty of Science, Department of Botany, Charles University in Prague, Benatska 2, 128 01, Prague</wicri:regionArea><placeName><settlement type="city">Prague</settlement><region type="région" nuts="2">Bohême centrale</region></placeName></affiliation><affiliation wicri:level="1"><country xml:lang="fr">République tchèque</country><wicri:regionArea>Faculty of Science, Department of Biology and Ecology, University of Ostrava, Chittussiho 10, 710 00, Ostrava</wicri:regionArea><wicri:noRegion>Ostrava</wicri:noRegion></affiliation></author></analytic><monogr></monogr><series><title level="j">Journal of Systematics and Evolution</title><title level="j" type="abbrev">Jnl of Sytematics Evolution</title><idno type="ISSN">1674-4918</idno><idno type="eISSN">1759-6831</idno><imprint><publisher>Blackwell Publishing Ltd</publisher><date type="published" when="2013-07">2013-07</date><biblScope unit="volume">51</biblScope><biblScope unit="issue">4</biblScope><biblScope unit="page" from="476">476</biblScope><biblScope unit="page" to="484">484</biblScope></imprint><idno type="ISSN">1674-4918</idno></series><idno type="istex">B01EB87F3B210CCD976E93C91C824F9CDC1A035C</idno><idno type="DOI">10.1111/jse.12014</idno><idno type="ArticleID">JSE12014</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">1674-4918</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Chloropyrula uraliensis</term><term>Trebouxiophyceae</term><term>Ural Mountains</term><term>green algae</term><term>new species</term><term>ultrastructure</term></keywords></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Soil hosts diverse communities of photosynthetic eukaryotes (algae) that have not yet been fully explored. Here we describe an interesting coccoid green alga isolated from a soil sample from a forest‐steppe in South Urals (Bashkortostan, Russia) that, based on a phylogenetic analysis of 18S rRNA gene sequence, appears to represent a new phylogenetic lineage related to the genus Leptosira within the class Trebouxiophyceae. This new alga is characterized by uninucleate cells with a shape ranging from spherical to ellipsoid or egg‐like, occurring solitary or more often grouped in irregular masses or colonies. Remarkably, cells with a characteristic pyriform shape are encountered in cultures grown on a solid medium. The cells harbour a single pyrenoid‐lacking parietal chloroplast with the margin undulated or forming finger‐like projections; in mature cells the chloroplast becomes divided by deep incisions into more or less separate lobes. Transmission electron microscopy of vegetative cells revealed an unprecedented structure in the form of a cluster of microfibrils located in the cytoplasm near the plasma membrane, often appressed to the chloroplast. Reproduction takes place via autospores or biflagellated zoospores. The unique suite of characters of our isolate distinguishes it from previously described coccoid green algae and suggests that it should be classified as a new species in a new genus; we propose it be named Chloropyrula uraliensis.</div></front></TEI><affiliations><list><country><li>Russie</li><li>République tchèque</li></country><region><li>Bohême centrale</li></region><settlement><li>Prague</li></settlement></list><tree><country name="Russie"><noRegion><name sortKey="Gaysina, Lira" sort="Gaysina, Lira" uniqKey="Gaysina L" first="Lira" last="Gaysina">Lira Gaysina</name></noRegion></country><country name="République tchèque"><region name="Bohême centrale"><name sortKey="N Mcova, Yvonne" sort="N Mcova, Yvonne" uniqKey="N Mcova Y" first="Yvonne" last="N Mcová">Yvonne N Mcová</name></region><name sortKey="Elias, Marek" sort="Elias, Marek" uniqKey="Elias M" first="Marek" last="Eliáš">Marek Eliáš</name><name sortKey="Elias, Marek" sort="Elias, Marek" uniqKey="Elias M" first="Marek" last="Eliáš">Marek Eliáš</name><name sortKey="Sev Kova, Tereza" sort="Sev Kova, Tereza" uniqKey="Sev Kova T" first="Tereza" last="Šev Ková">Tereza Šev Ková</name><name sortKey="Skaloud, Pavel" sort="Skaloud, Pavel" uniqKey="Skaloud P" first="Pavel" last="Škaloud">Pavel Škaloud</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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