植物研究 ›› 2020, Vol. 40 ›› Issue (6): 923-931.doi: 10.7525/j.issn.1673-5102.2020.06.015
收稿日期:
2019-12-15
出版日期:
2020-11-20
发布日期:
2020-11-04
通讯作者:
张洛艳,樊守金
E-mail:fanshoujin007@ 163.com;fanshoujin007@163.com
作者简介:
吕冬雪(1994—),女,硕士研究生,主要从事植物资源分类研究。
基金资助:
Dong-Xue LÜ, Xue-Jie ZHANG, Luo-Yan ZHANG, Shou-Jin FAN()
Received:
2019-12-15
Online:
2020-11-20
Published:
2020-11-04
Contact:
Luo-Yan ZHANG,Shou-Jin FAN
E-mail:fanshoujin007@ 163.com;fanshoujin007@163.com
About author:
LÜ Dong-Xue(1994—),female,postgraduate,mainly engaged in classification of plant resources research.
Supported by:
摘要:
应用GENALEX6.502、ARLEQUINversion3.5、STRUCTUREv2.3.4、STRUCTURE Harvester、CLUMP和Distruct等软件进行遗传参数估算、主成分分析、遗传变异分析及遗传结构分析。在这项研究中,我们系统地从分布在中国黄河三角洲的12个二色补血草居群中采集到202份个体。我们通过使用共显性的微卫星标记探索微地理遗传结构,旨在解决黄河三角洲二色补血草居群结构和动态问题。结果表明:二色补血草呈中等程度的遗传分化,遗传变异主要存在于居群内,微弱的遗传分化存在于居群间,为(FST=0.067)。香农信息指数平均是1.037,基因流平均是4.106,观测杂合度和期望杂合度平均值分别是0.43和0.529。通过分析二色补血草群体的遗传多样性和遗传结构,旨在为资源的管理、保护和利用提供依据。总之,保护遗传多样性时,应保存尽可能多的居群和特异单株。
中图分类号:
吕冬雪, 张学杰, 张洛艳, 樊守金. 基于SSR技术对黄河三角洲二色补血草遗传多样性研究[J]. 植物研究, 2020, 40(6): 923-931.
Dong-Xue LÜ, Xue-Jie ZHANG, Luo-Yan ZHANG, Shou-Jin FAN. Analysis of Limonium bicolor by SSRMolecular Markers in the Yellow River Delta Region[J]. Bulletin of Botanical Research, 2020, 40(6): 923-931.
表1
采集地信息和土壤盐度
名称Site | 样本数目Sample size | 经度Longitude(E) | 纬度Latitude(N) | 盐度/ ECeSoil salinity/ECe(dS/m) |
---|---|---|---|---|
023县道(XD) | 21 | 118.097 3 | 37.515 9 | 27.7 |
东小庄(DX) | 16 | 118.164 6 | 37.552 1 | 18.9 |
八顷村(BQ) | 13 | 118.153 6 | 37.573 1 | 17.85 |
余丈村(YZ) | 16 | 118.284 8 | 37.532 8 | 16.4 |
新立村(XL) | 19 | 118.434 1 | 37.310 1 | 11.5 |
汀河屋子(TH) | 19 | 118.412 8 | 38.073 8 | 11.1 |
小岛河中桥(DH) | 18 | 118.532 2 | 37.373 4 | 10.2 |
三河检查站(JC) | 22 | 118.405 7 | 38.012 3 | 9.5 |
十一村(SY) | 10 | 118.473 4 | 37.321 1 | 6.2 |
小坨村(XT) | 18 | 118.237 2 | 37.986 9 | 5.8 |
汪子岛(WD) | 15 | 117.572 6 | 38.132 9 | 5.4 |
王家屋子(WZ) | 13 | 118.445 9 | 38.062 1 | 2.2 |
表2
18个微卫星位点的引物序列和等位基因多样性信息
位点Locus | 引物序列Primer sequences (5′-3′) | 等位基因范围Allele size range(bp) | 等位基因总数Total number of alleles | 位点Locus | 引物序列Primer sequences(5′-3′) | 等位基因范围Allele size range(bp) | 等位基因范围Allele size range(bp) | |
---|---|---|---|---|---|---|---|---|
SSRLB1 | F:TTAGCCTCCCTCTTAT | 383~411 | 27 | SSRLB30 | F:GTGATAATGCCTGGAGA | 154~180 | 15 | |
R:CTGACCTTACCGAAAT | R:GAGGATGTTGGTTTCG | |||||||
SSRLB2 | F:GATGGAGACCGAATAA | 253~270 | 8 | SSRLB31 | F:AGGAGGACTTTGTTTG | 147~175 | 6 | |
R:ACCGAAATGGACAACT | R:ATCTCAGGAGGGCTAT | |||||||
SSRLB6 | F:AGAATCTGAGTGGCTGTT | 285~290 | 6 | SSRLB32 | F:CCGAAACAAATAGGCA | 176~188 | 8 | |
R:GGCTTAGGGTTTGTGA | R:GACACTGGCAGAGGAA | |||||||
SSRLB12 | F:CAACTGTGAAAGACGGAAAG | 212~285 | 16 | SSRLB33 | F:ACACGGAGAAGGAAGG | 353~390 | 15 | |
R:CACGGCAATGGAGGAT | R:TGATAGGGTGAAGCAA | |||||||
SSRLB14 | F:ATAATAACCCAGCGGCAATG | 149~156 | 4 | SSRLB43 | F:TCTGCTGCTTCTTCCT | 190~207 | 8 | |
R:AGGCAGGTGAAGCAAATCG | R:GCTCACATTCCCTCAT | |||||||
SSRLB18 | F:GTCTGCTGCTTCTTCC | 193~210 | 6 | SSRLB53 | F:CACGAGGAAGATTGGC | 130~136 | 5 | |
R:GTGCTCACATTCCCTC | R:CAGGGAAGCATTACAGTCAG | |||||||
SSRLB22 | F:ATCCCAGGAAGCAACA | 354~370 | 14 | SSRLB54 | F:ATCCCAGGAAGCAACA | 250~260 | 8 | |
R:GATTTCAAAGCCCACC | R:GAGCACCATCATTAGCC | |||||||
SSRLB25 | F:AGCCTTCAACGATACAA | 185~194 | 10 | SSRLB59 | F:AGAATCTGAGTGGCTGTT | 286~290 | 5 | |
R:GGAGAACTTACGGATTA | R:GGCTTAGGGTTTGTGA | |||||||
SSRLB26 | F:AGAGGGTGCCTGGAAA | 134~140 | 4 | SSRLB64 | F:CAACTGTGAAAGACGGAAAG | 212~284 | 11 | |
R:AGGGTTGATGGCTTGG | R:CACGGCAATGGAGGAT |
表3
二色补血草居群遗传多样性参数
居群Population | 样本数目Number | 平均等位基因数目Number of alleles(Na) | 有效等位基因数目Number of effective alleles(Ne) | 香农信息指数Shannon’s Information index(I) | 平均观察杂合度Observed heterozygosity(Ho) | 平均期望杂合度Expected heterozygosity(He) | 固定指数Fixation coefficients(F) |
---|---|---|---|---|---|---|---|
BQ | 12.944 | 4.111 | 2.564 | 0.989 | 0.305 | 0.518 | 0.425 |
DH | 17.611 | 4.667 | 2.750 | 1.023 | 0.48 | 0.522 | 0.141 |
DX | 15.944 | 4.222 | 2.781 | 1.015 | 0.436 | 0.532 | 0.203 |
JC | 21.778 | 5.000 | 2.942 | 1.073 | 0.443 | 0.543 | 0.181 |
SY | 10.556 | 5.056 | 2.748 | 1.114 | 0.396 | 0.544 | 0.275 |
TH | 18.889 | 4.833 | 2.518 | 1.023 | 0.430 | 0.518 | 0.212 |
WD | 14.833 | 4.556 | 2.490 | 0.970 | 0.370 | 0.486 | 0.196 |
WZ | 12.889 | 4.167 | 2.716 | 1.037 | 0.447 | 0.556 | 0.217 |
XD | 20.556 | 5.167 | 2.780 | 1.053 | 0.428 | 0.517 | 0.168 |
XL | 18.778 | 5.111 | 3.197 | 1.140 | 0.540 | 0.573 | 0.054 |
XT | 17.056 | 4.222 | 2.561 | 0.967 | 0.469 | 0.505 | 0.083 |
YZ | 15.889 | 4.611 | 2.701 | 1.036 | 0.418 | 0.54 | 0.234 |
Mean | 16.477 | 4.644 | 2.729 | 1.037 | 0.430 | 0.529 | 0.198 |
表4
18个位点遗传多样性参数
引物名称Primers | 样本数目Number | 平均等位基因数目Number of alleles | 有效等位基因数目Number of effective alleles(Ne) | 香农信息指数Shannon’s information index(I) | 平均观察杂合度Observed heterozygosity(Ho) | 平均期望杂合度Expected heterozygosity(He) | 固定指数Fixation coefficients(F) |
---|---|---|---|---|---|---|---|
SSRLB1 | 16.000 | 11.667 | 7.952 | 2.221 | 0.780 | 0.869 | 0.106 |
SSRLB2 | 16.250 | 5.917 | 3.966 | 1.524 | 0.740 | 0.737 | -0.006 |
SSRLB6 | 16.750 | 3.250 | 1.429 | 0.549 | 0.275 | 0.282 | 0.011 |
SSRLB12 | 16.583 | 5.917 | 3.251 | 1.315 | 0.436 | 0.656 | 0.310 |
SSRLB14 | 16.667 | 2.917 | 2.097 | 0.818 | 0.490 | 0.497 | 0.024 |
SSRLB18 | 16.417 | 2.083 | 1.176 | 0.255 | 0.140 | 0.137 | -0.027 |
SSRLB22 | 15.583 | 5.333 | 2.877 | 1.234 | 0.614 | 0.626 | 0.021 |
SSRLB25 | 16.167 | 5.333 | 2.552 | 1.173 | 0.401 | 0.589 | 0.302 |
SSRLB26 | 16.833 | 2.250 | 1.680 | 0.598 | 0.386 | 0.393 | 0.007 |
SSRLB30 | 16.167 | 7.083 | 4.104 | 1.604 | 0.661 | 0.745 | 0.124 |
SSRLB31 | 16.833 | 2.583 | 1.565 | 0.560 | 0.055 | 0.333 | 0.836 |
SSRLB32 | 16.500 | 3.583 | 1.766 | 0.751 | 0.150 | 0.417 | 0.653 |
SSRLB33 | 16.583 | 7.750 | 4.293 | 1.681 | 0.595 | 0.762 | 0.222 |
SSRLB43 | 15.917 | 3.333 | 2.172 | 0.870 | 0.151 | 0.522 | 0.724 |
SSRLB53 | 16.833 | 3.167 | 2.171 | 0.876 | 0.829 | 0.537 | -0.545 |
SSRLB54 | 16.833 | 3.500 | 1.714 | 0.719 | 0.418 | 0.393 | -0.053 |
SSRLB59 | 16.833 | 3.667 | 1.970 | 0.861 | 0.239 | 0.476 | 0.494 |
SSRLB64 | 16.833 | 4.250 | 2.385 | 1.050 | 0.382 | 0.560 | 0.324 |
Mean | 16.477 | 4.644 | 2.729 | 1.037 | 0.430 | 0.529 | 0.198 |
表5
18个位点遗传分化参数
引物名称Primers | 近交系数Genetic diversitywithin populations(FIS) | 居群间分化系数Coefficient geneticdifferentiation(FST) | 基因流Gene flow(Nm) |
---|---|---|---|
SSRLB1 | 0.103 | 0.062 | 3.763 |
SSRLB2 | -0.004 | 0.063 | 3.728 |
SSRLB6 | 0.024 | 0.049 | 4.900 |
SSRLB12 | 0.336 | 0.094 | 2.404 |
SSRLB14 | 0.015 | 0.103 | 2.188 |
SSRLB18 | -0.027 | 0.060 | 3.909 |
SSRLB22 | 0.018 | 0.073 | 3.171 |
SSRLB25 | 0.320 | 0.039 | 6.202 |
SSRLB26 | 0.018 | 0.062 | 3.790 |
SSRLB30 | 0.112 | 0.072 | 3.238 |
SSRLB31 | 0.835 | 0.102 | 2.203 |
SSRLB32 | 0.642 | 0.074 | 3.120 |
SSRLB33 | 0.219 | 0.072 | 3.213 |
SSRLB43 | 0.710 | 0.065 | 3.618 |
SSRLB53 | -0.546 | 0.018 | 13.741 |
SSRLB54 | -0.064 | 0.072 | 3.217 |
SSRLB59 | 0.497 | 0.052 | 4.527 |
SSRLB64 | 0.318 | 0.078 | 2.973 |
Mean | 0.196 | 0.067 | 4.106 |
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