Li H, Xia P, Wang C, Wang Y, Zhao XY, Ma K, Dai W, Cao Y, Zhou HG, Liu WB. [Establishment of DNA Genetic Marker Identification System for Plant Evidence].
Fa Yi Xue Za Zhi 2018;
34:138-141. [PMID:
29923377 DOI:
10.3969/j.issn.1004-5619.2018.02.006]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 05/03/2016] [Indexed: 11/18/2022]
Abstract
OBJECTIVES
To establish a species identification system based on DNA genetic markers for plant evidence.
METHODS
Two hundred common plants in Shanghai were collected and identified by morphological characteristics. The primers of gene segments rbcL, matK, and ITS were designed and amplified. The PCR amplicon was detected by agarose gel electrophoresis. After the sequencing, the universality and the identification capacity of the three markers were evaluated.
RESULTS
The success rate of amplification was in order of rbcL (99.5%) > matK (92.5%) > ITS (86.0%). The identification capacity of the combination of rbcL and matK was better than that of rbcL or matK, by which most plant species could be identified to the genus or higher. ITS was not suitable to be a unique marker because of its unstable result, but it still could be a powerful supplement. The identification capacity of the combination of rbcL, matK and ITS was higher than that of rbcL and matK, by which most plant species could be identified to the genus or lower.
CONCLUSIONS
The identification system with the combination of rbcL, matK and ITS as markers has excellent universality for plant evidence, which can distinguish most plant species to the genus or lower.
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