Agaricus bisporus Germplasms in Southern Fujian Identified by Somatic Incompatibility Test and SSR
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摘要:
目的 分析评价引进双孢蘑菇种质资源间的亲缘关系与遗传多样性,为闽南地区双孢蘑菇种质资源的鉴定、保藏与分子育种提供理论基础。 方法 结合体细胞不亲和性试验和SSR分子标记技术,对供试的9个双孢蘑菇菌株进行鉴定和遗传多样性分析。 结果 体细胞不亲和性试验结果表明,供试菌株之间拮抗作用较明显,根据拮抗反应的有无,供试菌株分为5组。SSR结果表明,当相似性系数达到0.76水平时,供试菌株聚成4个类群,第1类群包括HK;第2类群包括901和A15;第3类群包括福蘑52;第4类群包括As2796、W192、W2000、福蘑58、福蘑38。 结论 拮抗反应与SSR分子标记2种方法的结果基本一致。综合这2种方法,推测菌株HK与其他供试菌株亲缘关系较远,尤其与供试的其他国内菌株存在较大差异,可以作为一个育种亲本材料。 Abstract:Objective Genetic relationship and diversity of Agaricus bisporus germplasms recently introduced to southern Fujian were studied to facilitate the identification, preservation, and breeding of the mushroom resource. Method Both somatic incompatibility test and SSR molecular marker technology were used to determine the genetic diversity of 9 varieties of A. bisporus. Result Somatic incompatibilities of the germplasms allowed the separation of 5 distinct groups by the presence or absence of antagonistic effect among them. Utilizing a similarity coefficient of 0.77, SSR analysis clustered the germplasms into Group 1 that consisted of HK, Group 2 that included 901 and A15, Group 3 that had Fumo 52, and Group 4 that comprised of As2796, W192, W2000, Fumo 58, and Fumo 38. Conclusion From the results obtained by the somatic incompatibility test and SSR molecular marker technology, HK appeared to be remotely related to the other 8 germplasms, especially the domestic varieties. Hence, it could be a potential candidate for breeding purpose. -
Key words:
- Agaricus bisporus /
- genetic relationship /
- antagonistic effect /
- SSR /
- clustering analysis
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表 1 供试的双孢蘑菇菌株编号
Table 1. Sample codes for A. bisporus germplasms
编号
No.菌株名称
Strain来源
Origin1 As2796 漳州市农科所 2 W2000 福建省农科院 3 W192 福建省农科院 4 福蘑38 福建省农科院 5 福蘑52 福建省农科院 6 福蘑58 福建省农科院 7 901 制种户 8 A15 制种户 9 HK 香港 表 2 供试菌株鉴定所用SSR引物
Table 2. SSR primers for variety identification
引物名
Primer序列(5′ to 3′)
Sequence(5′ to 3′)5′端修饰
5′end modification重复基序
Repeat motifs片段大小/bp
Fragment size退火温度/℃
Annealing temperatureAbSSR005-F CTCTGGGATATGGACGAGGA 5′6-FAM (GATGAG)6 118 56 AbSSR013-F GACTGCCTGATTGACGGATT 5′HEX (TA)6 162 57 AbSSR015-F CTCGAGTCGACGAAGGAAAC 5′HEX (GA)7 238 58 AbSSR016-F TGTCTGGTTTTGCTCACGTC 5′HEX (TC)12 242 55 AbSSR018-F TGGCTCTTTACAGCCTTGGT 5′6-FAM (CAT)6 122 55 AbSSR084-F CGACCCATCATCAACTTCCT 5′HEX (GAA)6 234 59 AbSSR6-F ACCACATTCTGGAAAACGAA 5′HEX (GCT)8 181 55 AbSSR36-F CGTTGATGGAGTTCACTGAG 5′HEX (GAAG)4(GAAAAG)(GAAG) 148 58 L11-F ATAAAAAAGCATAATCACAAATG 5′6-FAM (TC)13 228 50 L15-F GCAGGTCCAGTGTGAACGG 5′6-FAM (TCC)8 192 57 L17-F ATCCAATTCACCAACCAGC 5′6-FAM (A)11gagaataagaaattgaaaattg(A)16 186 52 L23-F CTTTTCAGGGGAAGACAACG 5′6-FAM (GTG)7 174 55 表 3 供试菌株间的拮抗反应情况
Table 3. Antagonistic reactions among tested germplasms
菌株
StrainAs2796
As2796W2000
W2000W19
2W192福蘑38
Fomo 38福蘑52
Fomo 52福蘑58
Fomo 58901 A15 HK As2796 As2796 − W2000 W2000 − − W192 W192 − − − 福蘑38 Fomo 38 − − − − 福蘑52 Fomo 52 + + + + − 福蘑58 Fomo 58 − − + − + − 901 + + + + + + − A15 + + + + + + − − HK + + + + + + + + − 注:‘+’表示有拮抗性;‘−’表示无拮抗
Note: + presence of antagonism; − absence of antagonism.表 4 相似性系数
Table 4. List of similarity coefficients
菌株
Strain福蘑38
Fomo 38福蘑52
Fomo 52福蘑58
Fomo 58901 A15 As2796 HK W192 W2000 福蘑38 Fomo 38 1 福蘑52 Fomo 52 0.615 1 福蘑58 Fomo 58 0.9 0.595 1 901 0.541 0.588 0.629 1 A15 0.462 0.722 0.486 0.765 1 As2796 0.821 0.667 0.865 0.529 0.556 1 HK 0.526 0.686 0.5 0.667 0.743 0.571 1 W192 0.905 0.718 0.8 0.432 0.564 0.821 0.632 1 W2000 0.81 0.769 0.8 0.486 0.615 0.821 0.684 0.905 1 -
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