Page 168 - 《广西植物》2025年第3期
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5 4 8 广 西 植 物 45 卷
红色三角形代表文采报春苣苔 PwDREB2s 转录因子ꎬ1 000 次重复中检验获得的自展值在分支上标注ꎮ A. 基于 DREB 亚族转录
因子全长序列构建的系统进化树(邻接法)ꎬA ̄1-A ̄6 分别为不同亚组ꎻ B. 基于 A ̄2 亚组转录因子 AP2 / ERF 保守域及侧翼序列
构建的系统进化树(邻接法)ꎬ不同颜色矩形方框分别表示亚型 1-4ꎮ
Red triangles represent PwDREB2s transcription factors in P. wentsaiiꎬ the bootstrap values obtained from total 1 000 replicates are all noted on the
branches. A. According to the full ̄length sequences of DREB subfamily transcription factorsꎬ the neighbor ̄joining phylogenetic tree is constructedꎬ
A ̄1-A ̄6 represent different subgroupsꎬ respectivelyꎻ B. Based on the AP2/ ERF domains and flanking sequences of A ̄2 subgroup transcription
factorsꎬ the neighbor ̄joining phylogenetic tree is constructedꎬ rectangle boxes with different colors represent subtypes 1-4ꎬ respectively.
图 2 文采报春苣苔 PwDREB2s 转录因子的系统进化分析
Fig. 2 Phylogenetic analysis of PwDREB2s transcription factors in Primulina wentsaii
不同颜色的方框分别代表了编号为 1 ~ 15 的不同保守基序ꎬ所示基序匹配的位置 P 值均小于0.000 1ꎬ基序长度按比例绘制ꎮ
AtDREB2A(NP_196160)、AtDREB2D(ABK59671)、AtDREB2E(NP_001318372)及 AtDREB2F(NP_191319) 均来自拟南芥ꎮ 利用
MEME 在线工具对拟南芥和文采报春苣苔中 12 个 DREB2 转录因子进行保守基序预测ꎮ
Boxes of different colors represent different consensus motifs numbered 1 to 15ꎬ respectively. The motif matched shown has a position P value
less than 0.000 1. The domains are drawn to scale. AtDREB2A (NP_196160)ꎬ AtDREB2D (ABK59671)ꎬ AtDREB2E (NP_001318372) and
AtDREB2F (NP_191319) are from Arabidopsis thaliana. Twelve DREB2 transcription factors including A. thaliana and Primulina wentsaii are
collected for motif discovery using MEME online tools.
图 3 文采报春苣苔 PwDREB2s 转录因子中的保守基序分布
Fig. 3 Distribution of consensus motifs in the PwDREB2s transcription factors from Primulina wentsaii

