Aphanizomenon
Aphanizomenon is a genus of cyanobacteria that inhabits freshwater lakes and can cause dense blooms. These cyanobacteria are unicellular organisms that form linear (non-branching) chains known as trichomes. Parallel trichomes can further unite into aggregates called rafts. Cyanobacteria such as Aphanizomenon are known for using photosynthesis to create energy and thus rely on sunlight as their energy source. Aphanizomenon bacteria also play a significant role in the Nitrogen cycle due to their ability to perform nitrogen fixation. Studies on the species Aphanizomenon flos-aquae have shown that
Species
GENUS
- KingdomBacteria
- PhylumCyanobacteria
- ClassCyanobacteriia
- OrderCyanobacteriales
- FamilyAphanizomenonaceae
Habitatfreshwater
本条目部分链接不符合格式手冊規範。跨語言链接及章節標題等處的链接可能需要清理。（2015年12月12日） 請協助改善此條目。參見WP:LINKSTYLE、WP:MOSIW以了解細節。突出显示跨语言链接可以便于检查。 種 見內文 束絲藻屬（Aphanizomenon）隶属于蓝菌门念珠藻目念珠藻科，是一種在淡水生活的浮游丝状藻类，能引發水華[2][3]，但亦可調節水體的浮力[4]。 束絲藻屬並非所有品種均可食用，一來因為可能有毒[5]（例如纤细束丝藻和依沙束丝藻會产生麻痹性贝毒毒素[2]），二來可能因為水體本身就已污染，吃用了會連同污染物一起吃進肚裡。 特征 束丝藻的特征是丝状体末端细胞渐细或成发状，延伸成无色的细胞[2]。可在水中透過滑翔來移動。 品種 以下為常見之束丝藻品種[2]： 水华束丝藻 A. flos-aquae 纤细束丝藻 A. gracile 依沙束丝藻 A. issatschenkoi A. Morren 當中有研究透過比對16SrRNA和Rubisco两个基因，表明水华束丝藻和纤细束丝藻具有较高的亲缘关系,其相似性分别为 99%和99%,而依沙束丝藻亲缘关系较远,相似性分别只有96%和93-94%[2]。 參考資料 ^ 參看：http://ijs.sgmjournals.org/cgi/content/abstract/54/5/1895 ^ 2.0 2.1 2.2 2.3 2.4 2.5 吴忠兴、李仁辉. 我国淡水水体中束丝藻(Aphanizomenon)的形态及分子特征研究. 中国海洋湖沼学会藻类学分会第七届会员大会暨第十四次学术讨论会论文摘要集. 2008 （中文（简体））. ^ Jensen, Gitte S.; Ginsberg, Donald I.; Drapeau, Christian. Blue-Green Algae as an Immuno-Enhancer and Biomodulator (PDF). Journal of the American Nutraceutical Association. 2001, 3 (4): 24–30 [2012-05-18]. （原始内容 (PDF)存档于2012-04-26） （英语）. ^ Konopka, A.; T. D. Brock; Walsby, A. E. "Buoyancy regulation by planktonic blue-green algae in Lake Mendota, Wisconsin.". Arch. Hydrobiol.. 1978, (83): 524–537 （英语）. ^ Carmichael, Wayne W. The Toxins of Cyanobacteria. Scientific American. January
via GBIF
~8 min read
Article
11 sectionsContents
- Species
- Notes beyond AlgaeBase classification
- Ecology
- Overcoming phosphate limitation
- Photosynthesis
- Nitrogen fixation
- Algal blooms
- Toxin production
- Colony formation
- See also
- References
Aphanizomenon is a genus of cyanobacteria that inhabits freshwater lakes and can cause dense blooms. These cyanobacteria are unicellular organisms that form linear (non-branching) chains known as trichomes. Parallel trichomes can further unite into aggregates called rafts. Cyanobacteria such as Aphanizomenon are known for using photosynthesis to create energy and thus rely on sunlight as their energy source. Aphanizomenon bacteria also play a significant role in the Nitrogen cycle due to their ability to perform nitrogen fixation. Studies on the species Aphanizomenon flos-aquae have shown that it can regulate buoyancy through light-induced changes in turgor pressure. The genus is also capable of gliding motility, although the specific mechanism responsible for this ability remains unknown.
== Species == Species and synonymy from AlgaeBase: Aphanizomenon americanum S → Aphanizomenon flos-aquae Aphanizomenon aphanizomenoides S → Sphaerospermopsis aphanizomenoides Aphanizomenon balticum U Aphanizomenon capricorni S → Cuspidothrix capricorni Aphanizomenon chinense C "Aphanizomenon cyaneum" S → Aphanizomenon flos-aquae Aphanizomenon elenkinii S → Aphanizomenon flos-aquae Aphanizomenon favaloroi C Aphanizomenon flexuosum C Aphanizomenon flos-aquae C – see note Aphanizomenon gracile C Aphanizomenon holsaticum S → Aphanizomenon flos-aquae Aphanizomenon hungaricum C Aphanizomenon incurvum C Aphanizomenon issatschenkoi → Cuspidothrix issatschenkoi Aphanizomenon kaufmannii S → Cylindrospermopsis raciborskii Aphanizomenon klebahnii C Aphanizomenon manguinii C Aphanizomenon morrenii C Aphanizomenon ovalisporum S → Umezakia ovalisporum Aphanizomenon paraflexuosum C Aphanizomenon platense C Aphanizomenon schindleri C Aphanizomenon skujae C Aphanizomenon slovenicum C Aphanizomenon sphaericum S → Aphanizomenon aphanizomenoides Aphanizomenon strictum U Aphanizomenon tropicale S → Cuspidothrix tropicalis Aphanizomenon ussaczevii S → Cuspidothrix ussaczevii Aphanizomenon volzii S → Macrospermum volzii Aphanizomenon yezoense C
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