IF 3.2 3区生物学

Algae Pub Date : 2020-12-21 DOI: 10.4490/algae.2020.35.12.3

Hyung Woo Lee, E. Bae, M. Kim

引用次数: 1

Haraldiophyllum hawaiiense sp. nov. (Delesseriaceae, Rhodophyta): a new mesophotic genus record for the Hawaiian Islands 夏威夷原叶藻sp. 11 .(紫藻科，红藻门):夏威夷群岛中叶藻属新记录

IF 3.2 3区生物学

Algae Pub Date : 2020-12-21 DOI: 10.4490/algae.2020.35.11.5

M. O. Paiano, J. Huisman, Feresa P. Cabrera, Heather L. Spalding, R. Kosaki, A. Sherwood

引用次数: 5

Integrative taxonomic description of two new species of the Cocconeis placentula group (Bacillariophyceae) from Korea based on unialgal strains 基于单藻菌株的韩国胎盘球藻群(硅藻科)两新种的综合分类描述

IF 3.2 3区生物学

Algae Pub Date : 2020-12-21 DOI: 10.4490/algae.2020.35.8.1

R. Jahn, Nélida Abarca, Wolf-Henning Kusber, O. Skibbe, J. Zimmermann, Demetrio Mora

{"title":"Integrative taxonomic description of two new species of the Cocconeis placentula group (Bacillariophyceae) from Korea based on unialgal strains","authors":"R. Jahn, Nélida Abarca, Wolf-Henning Kusber, O. Skibbe, J. Zimmermann, Demetrio Mora","doi":"10.4490/algae.2020.35.8.1","DOIUrl":"https://doi.org/10.4490/algae.2020.35.8.1","url":null,"abstract":"Cocconeis coreana and C. sijunghoensis are described as new based on micromorphological and molecular data. C. coreana is represented by five unialgal cultures from four different freshwater bodies, two from North Korea and three from South Korea. C. sijunghoensis is represented by two unialgal cultures from a brackish water body in North Korea. Except for one, all of the strains auxosporulated and showed an almost quadrupling of size in length and width. Morphologically, these species with their two different elliptical valves belong to the Cocconeis placentula group. The raphe valve has striae with uniseriate areolae continuing across a pronounced submarginal hyaline rim to the edge of the valve. The sternum valve has uniseriate dash-like areolae continuously from the valve face until the valve edge. Micromorphologically, these species possess two different open valvocopulae: only the raphe valvocopula has fimbriae; the sternum valvocopula has none. Based on p-distances of currently available DNA sequence data, i.e., rbcL and 18SV4, both species are pronouncedly different from the epitype strain of C. placentula, with C. coreana closest to the published molecular data of the strain UTEX FD23 named C. placentula from Iowa, USA, while C. sijunghoensis is closest but not the same as the published molecular data of strain D36_012, the epitype strain of C. placentula from Berlin, Germany. Based on scanning electron microscope observations, differentiating features are discussed concerning valvocopula fimbriae, central area, areolation of the sternum valve and on the raphe valve especially between the submarginal hyaline rim and edge.","PeriodicalId":7628,"journal":{"name":"Algae","volume":"35 1","pages":"303-324"},"PeriodicalIF":3.2,"publicationDate":"2020-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49008511","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Dynamics of spermatial nuclei in trichogyne of the red alga Bostrychia moritziana (Florideophyceae) 红藻毛柄藻精子细胞核的动态

IF 3.2 3区生物学

Algae Pub Date : 2020-12-21 DOI: 10.4490/algae.2020.35.12.7

Eunyoung Shim, H. Park, Soo-hyun Im, G. Zuccarello, G. Kim

引用次数: 2

Effect of elevated pCO2 on thermal performance of Chattonella marina and Chattonella ovata (Raphidophyceae) 二氧化碳分压升高对滨海查通菌和卵形查通菌热性能的影响

IF 3.2 3区生物学

Algae Pub Date : 2020-12-21 DOI: 10.4490/algae.2020.35.12.8

Myeong-Hwan Lim, C. Lee, Juhee Min, Hyun-Gwan Lee, Kwang Young Kim

引用次数: 4

Mayamaea vietnamica sp. nov.: a new, terrestrial diatom (Bacillariophyceae) species from Vietnam 越南Mayamaea vietnamica sp.nov.：越南陆生硅藻（硅藻科）一新种

IF 3.2 3区生物学

Algae Pub Date : 2020-12-21 DOI: 10.4490/algae.2020.35.11.23

E. Kezlya, A. Glushchenko, J. Kociolek, Y. Maltsev, N. Martynenko, S. Genkal, M. Kulikovskiy

引用次数: 9

Ultrastructural changes of Haematococcus pluvialis (Chlorophyta) in process of astaxanthin accumulation and cell damage under condition of high light with acetate 雨生红球藻（绿藻）在乙酸盐强光下虾青素积累和细胞损伤过程中的超微结构变化

IF 3.2 3区生物学

Algae Pub Date : 2020-09-21 DOI: 10.4490/ALGAE.2020.35.5.22

B. He, L. Hou, Feng Zhang, X. Cong, Zhendong Wang, Yalin Guo, Jiawei Shi, M. Jiang, Xuecheng Zhang, X. Zang

{"title":"Ultrastructural changes of Haematococcus pluvialis (Chlorophyta) in process of astaxanthin accumulation and cell damage under condition of high light with acetate","authors":"B. He, L. Hou, Feng Zhang, X. Cong, Zhendong Wang, Yalin Guo, Jiawei Shi, M. Jiang, Xuecheng Zhang, X. Zang","doi":"10.4490/ALGAE.2020.35.5.22","DOIUrl":"https://doi.org/10.4490/ALGAE.2020.35.5.22","url":null,"abstract":"Haematococcus pluvialis is a commercial microalga that can produce high quantities of astaxanthin. Under induced conditions, some important changes in the subcellular structures related to astaxanthin accumulation were observable. For example, a large number of astaxanthin granules, oil structures and starch granules appeared in the thick-walled cells; Astaxanthin granules gradually dissolved into the oil structures and spread throughout the entire cell with the fusion and diffusion process of oil structures during the middle and late stages of induction; The plastoglobules were closed to the newly formed structures, and some plastoglobules would abnormally increase in size under stress. Based on observations of cell damage, the degradation of membrane structures, such as chloroplasts, was found to be the primary form of damage during the early stage of induction. During the middle stage of induction, some transparent holes were exposed in the dissolving astaxanthin granules in the cytoplasm. In thick-walled cells, these transparent holes were covered by oil substances dissolving astaxanthin, thereby avoiding further damage to cells. Given the relatively few oil structures, in non-thick-walled cells, the transparent holes expanded to form multiple transparent areas, eventually resulting in the rupture and death of cells. These results suggested that the high level of synthesis and the wide range diffusion of oil explained the expansion of astaxanthin in H. pluvialis.","PeriodicalId":7628,"journal":{"name":"Algae","volume":"35 1","pages":"253-262"},"PeriodicalIF":3.2,"publicationDate":"2020-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48771898","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 8

Effects of temperature on the growth and ingestion rates of the newly described mixotrophic dinoflagellate Yihiella yeosuensis and its two optimal prey species 温度对新发现的混合营养鞭毛菌yeosuensis及其两种最佳猎物生长和摄食率的影响

IF 3.2 3区生物学

Algae Pub Date : 2020-09-21 DOI: 10.4490/ALGAE.2020.35.8.20

Hee Chang Kang, H. Jeong, A. Lim, Jin Hee Ok, Ji Hyun You, Sang Ah Park, Sung Yeon Lee, S. Eom

引用次数: 11

An assessment of the taxonomic reliability of DNA barcode sequences in publicly available databases 公开数据库中DNA条形码序列分类可靠性的评估

IF 3.2 3区生物学

Algae Pub Date : 2020-09-21 DOI: 10.4490/ALGAE.2020.35.9.4

Soyeong Jin, Kwang Young Kim, Min-Seok Kim, Chungoo Park

引用次数: 11

Species-specific biomass drives macroalgal benthic primary production on temperate rocky reefs 物种特异性生物量驱动温带岩礁上大型底栖藻类初级生产

IF 3.2 3区生物学

Algae Pub Date : 2020-09-21 DOI: 10.4490/ALGAE.2020.35.8.19

Michael Spector, M. Edwards

{"title":"Species-specific biomass drives macroalgal benthic primary production on temperate rocky reefs","authors":"Michael Spector, M. Edwards","doi":"10.4490/ALGAE.2020.35.8.19","DOIUrl":"https://doi.org/10.4490/ALGAE.2020.35.8.19","url":null,"abstract":"Temperate rocky reefs dominated by the giant kelp, Macrocystis pyrifera, support diverse assemblages of benthic macroalgae that provide a suite of ecosystem services, including high rates of primary production in aquatic ecosystems. These forests and the benthic macroalgae that inhabit them are facing both short-term losses and long-term declines throughout much of their range in the eastern Pacific Ocean. Here, we quantified patterns of benthic macroalgal biomass and irradiance on rocky reefs that had intact kelp forests and nearby reefs where the benthic macroalgae had been lost due to deforestation at three sites along the California, USA and Baja California, MEX coasts during the springs and summers of 2017 and 2018. We then modeled how the loss of macroalgae from these reefs impacted net benthic productivity using species-specific, mass-dependent rates of photosynthesis and respiration that we measured in the laboratory. Our results show that the macroalgal assemblages at these sites were dominated by a few species of stipitate kelps and fleshy red algae whose relative abundances were spatially and temporally variable, and which exhibited variable rates of photosynthesis and respiration. Together, our model estimates that the dominant macroalgae on these reefs contribute 15 to 4,300 mg C m d to net benthic primary production, and that this is driven primarily by a few dominant taxa that have large biomasses and high rates of photosynthesis and / or respiration. Consequently, we propose that the loss of these macroalgae results in the loss of an important contribution to primary production and overall ecosystem function.","PeriodicalId":7628,"journal":{"name":"Algae","volume":"35 1","pages":"237-252"},"PeriodicalIF":3.2,"publicationDate":"2020-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47341030","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 12

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