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Makinoella parva,a new species of the genus Makinoella(oocystaceae,Trebouxiophyceae,Chlorophyta)

Journal of Oceanology and Limnology 2023年第6期41卷 2391-2402页

作者： Xudong LIU Chen SU Jia FENG Junping Lü Qi LIU Fangru NAN Guoxiang LIU Shulian XIE School of Life Science Shanxi Key Laboratory for Research and Development of Regional PlantsShanxi UniversityTaiyuan 030006China Key Laboratory of Algal Biology Institute of HydrobiologyChinese Academy of SciencesWuhan 430072China

Makinoella Okada is a genus of coccoid green algae belonging to the family oocystaceae with typical morphological *** to date included only one type *** the genus is rarely reported,there is a lack of taxonomic *** this study,17 strains of this genus were collected from several different places in China,and their taxonomic studies were conducted based on morphological and molecular phylogenetic *** phylogenetic results based on the analysis of ITS,chloroplast genes rbc L and tuf A showed that the genus was divided into two *** of the branches comprised newly collected *** base changes(CBCs)and hemi-compensatory base changes(hemi-CBCs)within the secondary structure of the ITS-2 confirmed the branches as two *** with the type species of Makinoella tosaensis,the cell size of this new branch was only about 50%,and included 2-4 colonial ***,based on the smaller cell size,simpler colony composition,independent phylogenetic position and CBCs and hemi-CBCs,we suggest that the new clade should be designated as a new taxon of Makinoella,namely Makinoella *** the four molecular markers using in this study,the rbc L and newly introduced ITS are recommended for species separation,which can help further studies to revise the species and generic concepts of the family.

关键词： coccoid green algae Makinoella morphology observation oocystaceae phylogenetic analysis

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Neglectella glomerata ***.,a new species and implications for the systematics of the genus Neglectella(oocystaceae,Trebouxiophyceae,Chlorophyta)

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Journal of Oceanology and Limnology 2021年第6期39卷 2370-2379页

作者： Xudong LIU Ran ZHANG Jia FENG Fabio RINDI Shulian XIE School of Life Science Shanxi Key Laboratory for Research and Development of Regional PlantsShanxi UniversityTaiyuan 030006China Dipartimento di Scienze della Vita e dell’Ambiente UniversitàPolitecnica delle MarcheAncona 60131Italy

The genus Neglectella Vodenicarov&Benderliev has a morphology similar to the well-known genus Oocystis,except for the numerous chloroplasts stacked in the surface layer of the *** subsequently experienced complex taxonomy changes with members being transferred in and out,and five species are now *** this study,a new alga with morphology corresponding to this genus was collected in China and successfully cultured in *** observations in light microscopy and transmission electronic microscopy(TEM)and phylogenetic analyses revealed that it is a new species,described here as Neglectella glomerata *** differed from other Neglectella species due to a morphological difference in its unique mucilaginous colony with a large number of cells,multiple pyrenoids in each chloroplast,smaller cell size,and more elongated cell *** analyses placed this alga in the subfamily Eremosphaeroideae of the family oocystaceae and showed its close relationship with Neglectella *** morphological comparisons combined with phylogenetic results revealed three different morphological types in *** new type represented by our new species may represent a transitional morphology in intermediate taxonomic position between the other two *** diversity of morphological types in Neglectella suggests that further unknown species of this genus are likely to be discovered in the *** collections and DNA sequence data will be needed in the future for this genus.

关键词： colony organization Eremosphaeroideae molecular phylogeny Neglectella oocystaceae pyrenoid

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