Page 87 - 《广西植物》2026年第9期
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9 期 刘玉婷等: 水华蓝藻———蒙氏浮丝藻的多相特征及分子系统研究 1 5 2 3
表 1 WZU2314 及其相似藻株序列 16S rRNA 相似度比较
Table 1 Comparison of 16S rRNA sequence similarity between WZU2314 and its similar algal strains
菌株
GenBank 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17
Strain
1. WZU2314 - - - - - - - - - - - - - - - - - -
2. Planktothrix mougeotii HAB002 FJ184392.1 99.91 - - - - - - - - - - - - - - - -
3. P. mougeotii TK4 ̄5 AB045969.1 99.74 99.66 - - - - - - - - - - - - - - -
4. P. mougeotii PMC 1114.19 OQ693661.1 99.74 99.83 99.48 - - - - - - - - - - - - - -
5. P. mougeotii CMAA1557 KY873316.1 99.48 99.48 99.23 99.31 - - - - - - - - - - - - -
6. P. tepida NR 177724.1 98.62 98.70 98.53 98.62 98.44 - - - - - - - - - - - -
7. P. serta NR 177723.1 97.39 97.30 97.30 97.12 97.12 98.18 - - - - - - - - - - -
8. P. spiroides strain fs1 NR 118104.1 96.94 97.03 96.67 96.85 97.03 97.21 96.40 - - - - - - - - - -
9. P. pseudagardhii NIES ̄914 FJ184389.1 96.94 97.03 96.67 96.85 96.85 96.94 96.13 98.96 - - - - - - - - -
10. P. pseudagardhii HAB1129 GQ457309.1 96.94 97.03 96.67 96.85 96.85 96.94 96.13 98.96 100 - - - - - - - -
11. P. spiroides nh4 HQ912983.1 96.85 96.94 96.58 96.76 96.94 97.12 96.31 99.91 98.88 98.88 - - - - - - -
12. P. rubescens NIVA ̄CYA 18 AB045925.1 96.57 96.66 96.30 96.48 96.48 97.37 96.93 96.49 95.76 95.76 96.40 - - - - - -
13. P. rubescens strain BC ̄Pla 9303 AJ132251.1 96.57 96.66 96.30 96.48 96.48 97.37 96.93 96.49 95.76 95.76 96.40 100 - - - - -
14. P. paucivesiculata NR 177722.1 96.40 96.31 96.31 96.12 96.31 96.84 97.30 96.31 96.22 96.22 96.22 98.26 98.26 - - - -
15. P. suspensa SAG 5.81 KM019973.1 96.39 96.49 96.12 96.30 96.30 97.29 96.85 96.31 95.58 95.58 96.22 99.83 99.83 98.09 - - -
16. P. agardhii PCC 9801 GQ351571.1 96.39 96.49 96.12 96.30 96.30 97.29 96.85 96.31 95.58 95.58 96.22 99.83 99.83 98.09 100 - -
17. P. agardhii NIES ̄595 AB045957.1 96.39 96.48 96.12 96.30 96.30 97.29 96.84 96.31 95.58 95.58 96.22 99.83 99.83 98.09 100 100 -
18. P. iranica NR 177898.1 96.22 96.22 96.13 96.03 96.22 97.11 97.21 96.13 95.85 95.85 96.04 98.62 98.70 98.70 98.53 98.53 98.53
表 2 浮丝藻属的 16S-23S rRNA 内转录间隔区的分析
Table 2 Analysis of 16S-23S rRNA ITS region of Planktothrix
菌株 Complete D1 ̄D1′ Box ̄B Box ̄A V3
GenBank ITS helix tRNA Ile tRNA Ala helix helix D4 helix D5
Strain
(nt) (nt) (nt) (nt) (nt)
WZU2314 - 368 64 + - 36 12 4 18 14
P. mougeotii CMAA1557 KY873316.1 380 64 + - 36 12 4 15 14
P. pseudagardhii No980 KU574115.1 539 63 + - 35 12 7 14 15
P. rubescens NIVA ̄CYA 18 GQ995022.1 308 62 + - 38 12 4 20 13
P. agardhii PCC 9801 GQ351571.1 542 63 + - 38 12 7 20 14
P. iranica AS S8A clone cl4 MF360987.1 337 64 + - 38 6 4 12 10
阿氏浮丝藻和粉红浮丝藻形状相同ꎬ具有相同碱 出显著的可变性ꎬ无论是构型走势还是碱基排列
基排列的基部茎和 1 个中间双侧凸 起 ( 2 ∶ 2)ꎮ 均有较大差异ꎬ说明该螺旋结构在属内物种间特
WZU2314 与同属其他藻株在 V3 螺旋结构中表现 异性较强ꎬ是区分不同物种的重要特征(图 6)ꎮ

