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Morphological and molecular discrimination of green macroalgae Chaetomorpha aerea and C-linum
Huang Bingxin1,2,4; Teng Linhong2,3; Ding Lanping1,2,4
2016-04-01
Source PublicationACTA OCEANOLOGICA SINICA
Volume35Issue:4Pages:118-123
SubtypeArticle
AbstractGreen macroalgae Chaetomorpha aerea and C. linum are taxonomically confused. In this paper, we tried morphological and molecular analyses to separate these two species. C. aerea and C. linum can be distinguished from morphological characteritics, such as frond dimension, cells size and shape, their mean length/width ratios (LWR), and cell walls constriction. Thalli of C. aerea attenuate basipetally, with diameter 270-500 mu m at upper portion, 160-360 mu m at middle portion, 100-160 mu m at basal portion. For the upper part, the length of cells is less than their diameter. Cell walls usually constrict at the dissepiments, which are pellucid or colorless and give the filament beaded appearance. In contrast, thalli of C. linum often have a constant diameter of 90-300 mu m within the same individual, cell walls usually do not constrict and cells are cylindrical or barrel shaped. The LWR is larger than that of C. aerea. Results show that the pairwise distance between two species is 3.6%-3.7% for 18S rRNA gene and 53.5%-54.3% for ITS region. In phylogeny, they distribute at distant clades, which confirms a genetic divergence at molecular level. In addition, morphological data indicates that filament diameter of C. linum samples is highly variable, ranging from 90 mu m to 300 mu m. Then these two species can be considered as separate species.
KeywordChaetomorpha Aerea Chaetomorpha Linum Molecular Identification Morphology Comparison 18s Rrna Its
DOI10.1007/s13131-016-0841-x
Indexed BySCI
Language英语
WOS IDWOS:000374250700015
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Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.qdio.ac.cn/handle/337002/131007
Collection海洋生物分类与系统演化实验室
Affiliation1.Tianjin Normal Univ, Coll Life Sci, Tianjin Key Lab Anim & Plant Resistance, Tianjin 300387, Peoples R China
2.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China
3.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
4.Shantou Univ, Inst Marine Biol, Shantou 515063, Peoples R China
First Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Huang Bingxin,Teng Linhong,Ding Lanping. Morphological and molecular discrimination of green macroalgae Chaetomorpha aerea and C-linum[J]. ACTA OCEANOLOGICA SINICA,2016,35(4):118-123.
APA Huang Bingxin,Teng Linhong,&Ding Lanping.(2016).Morphological and molecular discrimination of green macroalgae Chaetomorpha aerea and C-linum.ACTA OCEANOLOGICA SINICA,35(4),118-123.
MLA Huang Bingxin,et al."Morphological and molecular discrimination of green macroalgae Chaetomorpha aerea and C-linum".ACTA OCEANOLOGICA SINICA 35.4(2016):118-123.
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