Expanding our knowledge of Synurales (Chrysophyceae) in Florida, United States: Proposing three novel Mallomonas taxa.

IF 3.4 3区生物学 Q1 MARINE & FRESHWATER BIOLOGY

Journal of Phycology Pub Date : 2025-07-29 DOI:10.1111/jpy.70062

Petr Knotek, Martin Pusztai, Iva Jadrná, Pavel Škaloud

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Abstract

We conducted a survey of Synurales diversity in Florida (United States), focusing on two established hotspots-Ocala National Forest and Myakka River State Park-and two previously unexplored sites-Manatee Lake and Lake Lee. Using transmission electron microscopy (TEM), we identified 69 species, increasing the total number recorded from Florida to 90. Among these, three species-Mallomonas cornea sp. nov., M. laureana sp. nov., and M. joergenii sp. nov.-have been newly described based on detailed morphological and molecular analyses. We have also proposed a new combination, M. poseidonii comb. et stat. nov., and established a new section, Corneae sect. nov., based on molecular phylogenetics. Our findings revealed an independent emergence of ribbed scale shield ornamentation in M. joergenii sp. nov. and suggested that internal scale reticulation in M. laureana sp. nov. may be an adaptation to high UV irradiance in tropical environments. This study underscores the value of DNA sequence data in resolving taxonomic ambiguities, elucidating evolutionary patterns, and enhancing species recovery from type localities.

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扩大我们对美国佛罗里达州金藻属植物的认识：提出三个新的绿单胞菌分类群。

我们在佛罗里达州（美国）对Synurales的多样性进行了调查，重点关注两个已建立的热点-奥卡拉国家森林和米亚卡河州立公园-以及两个以前未开发的地点-海牛湖和李湖。利用透射电子显微镜（TEM）鉴定了69种，使佛罗里达的记录总数增加到90种。其中角膜mallomonas cornea sp. nov、laurenana sp. nov和joergenii sp. nov这三个物种是基于详细的形态和分子分析而新描述的。我们还提出了一种新的组合，M. poseidonii comb。et stat. nov.，并根据分子系统发育建立了一个新的科，Corneae sect. nov.。研究结果表明，joergenii sp. 11 .内部鳞片网状结构可能是对热带高紫外线辐射环境的一种适应。这项研究强调了DNA序列数据在解决分类歧义、阐明进化模式和增强物种从类型定位恢复方面的价值。

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来源期刊

Journal of Phycology 生物-海洋与淡水生物学

CiteScore

6.50

自引率

3.40%

发文量

审稿时长

2 months

期刊介绍： The Journal of Phycology was founded in 1965 by the Phycological Society of America. All aspects of basic and applied research on algae are included to provide a common medium for the ecologist, physiologist, cell biologist, molecular biologist, morphologist, oceanographer, taxonomist, geneticist, and biochemist. The Journal also welcomes research that emphasizes algal interactions with other organisms and the roles of algae as components of natural ecosystems. All aspects of basic and applied research on algae are included to provide a common medium for the ecologist, physiologist, cell biologist, molecular biologist, morphologist, oceanographer, acquaculturist, systematist, geneticist, and biochemist. The Journal also welcomes research that emphasizes algal interactions with other organisms and the roles of algae as components of natural ecosystems.