PDF
Full
Outline
OBJECTIVE To establish an effective identification method for Jiawa and easily mixed species by using DNA barcoding ITS2 sequence. METHODS The total DNA of 72 Jiawa and its similar species samples were extracted by using the plant genomic DNA Extraction kit,PCR amplification and bidirectional sequencing were carried out for the ITS2 fragments, another 30 items of the genus were downloaded from GenBank. MEGA6.0 software was applied to analyze 102 ITS2 sequences, calculate the intraspecific and interspecific K2-P distance, construct neighber-jioning (N-J) phylogenetic tree, and predict the secondary structure of ITS2. RESULTS K2-P genetic distance analysis showed that, in addition to Pleurospermum franchetianum Hemsl. and Pleurospermum wrightianum de Boiss., Pleurospermum hookeri var. thomsonii C.B. Clarke., Sphallerocarpus gracilis (Bess.) K.-Pol., Vicatia thibetica de Boiss., Carum carvi L., Heracleum millefolium Diels., Ligusticum daucoides (Franch.) Franch. and Anthriscus sylvestris subsp. Nemorosa have obvious barcode spacing. N-J tree cluster analysis showed that each species could be clustered into one branch with a bootstrap support rate of >50%, and the monophyleticity was good. The secondary structure analysis of ITS2 showed that the number, size and position of stem-loops in the four helical regions of Jiawa and its miscible were different. CONCLUSION The ITS2 sequence can be used to identify Jiawa and its easily mixed species, which is beneficial to the rational development and utilization of Jiawa resources.
PDF
33
15
| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
关闭全屏
No. 86 Xueyuan South Road, Haidian District, Beijing
010-62199257
qkjq@cast.org.cn
Copyright © 2025 China Association for Science and Technology. All rights reserved. For all open access content, the relevant licensing terms apply.
Sponsored by the Office of the Leading Group for Cybersecurity and Informatization of CAST, and supported by Science and Technology Review Publishing House
