Morphological and molecular discrimination of green macroalgae Chaetomorpha aerea and C. linum
文献类型：CNKI期刊论文
| 作者 | HUANG Bingxin; TENG Linhong; DING Lanping |
| 发表日期 | 2016-04-15 |
| 出处 | Acta Oceanologica Sinica
 |
| 关键词 | Chaetomorpha aerea Chaetomorpha linum molecular identification morphology comparison 18S rRNA ITS |
| 英文摘要 | Green 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 μm at upper portion, 160–360 μm at middle portion, 100–160 μm 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 μm 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 18 S r RNA 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 μm to 300 μm. Then these two species can be considered as separate species. |
| 文献子类 | CNKI期刊论文 |
| 资助机构 | The National Key Technology R&D Program of China under contract No.2012BAC07B05 ; the National Natural Science Foundation of China under contract Nos 31400186,31270257 and 31093440 ; the Science and Technology Plan Project of Guangdong Province under contract No.2012A020200007 ; the Science and Technology Plan Project of Shantou City,China under contract No.2012–171 |
| 卷 | v.35期:04页:122-127 |
| 语种 | 英文; |
| 分类号 | Q949.2 |
| ISSN号 | 0253-505X |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/189715]  |
| 专题 | 中国科学院海洋研究所 |
| 作者单位 | 1.TianjinKeyLaboratoryofAnimalandPlantResistance,CollegeofLifeSciences,TianjinNormalUniversity 2.InstituteofOceanology,ChineseAcademyofSciences 3.MarineBiologyInstitute,ShantouUniversity 4.GraduateUniversityofChineseAcademyofSciences |
| 推荐引用方式 GB/T 7714 | HUANG Bingxin,TENG Linhong,DING Lanping. Morphological and molecular discrimination of green macroalgae Chaetomorpha aerea and C. linum. 2016. |
入库方式： OAI收割
来源：海洋研究所
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