[1]姜晓君,孟彦,孙喜云,等.高粱SUS基因家族全基因组鉴定与表达分析[J].江苏农业科学,2026,54(10):38-46.
　Jiang Xiaojun,et al.Genomewide identification and expression analysis of SUS gene family in Sorghum bicolor L.[J].Jiangsu Agricultural Sciences,2026,54(10):38-46.
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高粱SUS基因家族全基因组鉴定与表达分析()

《江苏农业科学》[ISSN:1002-1302/CN:32-1214/S]

卷:
第54卷
期数:
2026年第10期
页码:
38-46
栏目:
耐温度胁迫基因鉴定
出版日期:
2026-05-20

文章信息/Info

Title:
Genomewide identification and expression analysis of SUS gene family in Sorghum bicolor L.
作者:
姜晓君; 孟彦; 孙喜云; 陈敏菊; 袁海波
商丘市农林科学院，河南商丘 476000
Author(s):
Jiang Xiaojun; et al
关键词:
高粱; SUS基因家族; 鉴定; 表达分析
Keywords:
-
分类号:
S188；S514.03
DOI:
-
文献标志码:
A
摘要:
蔗糖合成酶是植物碳水化合物代谢的关键酶，其基因家族的进化与功能分化对作物生长发育具有重要调控作用。通过生物信息学手段对高粱SUS基因家族进行系统鉴定及生物信息学、表达模式分析，从高粱基因组中鉴定得到8个SUS基因(SbSUS1~SbSUS8)，划分为4个亚家族(GroupⅠ~Ⅳ)，其中SbSUS基因与禾本科作物(玉米、谷子)亲缘关系较近，其家族成员外显子数目稳定(11~16个)，核心功能域(motif 1~4)排列高度保守，主要由可变基序(motif5和motif6)驱动SbSUS基因功能的分化。通过进行启动子分析发现，SbSUS基因富含多个激素响应元件(ABRE、AuxRR-core等)，其中SbSUS3含4个ABRE，暗示其在ABA诱导响应中具有潜在作用。染色体定位分析结果显示，SbSUS基因中仅有1对串联重复(SbSUS5/SbSUS7)，暗示直系同源进化是家族扩张的主要机制。共线性分析结果揭示，高粱与玉米、谷子之间存在更多的SUS共线性基因对(9对)。组织表达分析结果显示，SbSUS成员的表达具有明显的组织特异性，SbSUS1、SbSUS8主要在籽粒中高表达，SbSUS3、SbSUS4、SbSUS6在茎部富集。胁迫响应试验结果表明，低温(4 ℃)诱导6个SbSUS基因的表达水平显著上调(P<0.05)，而IAA和ABA诱导全部SbSUS家族成员上调表达，其中SbSUS2对IAA的胁迫响应最敏感，SbSUS3对ABA响应最敏感。
Abstract:
-

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备注/Memo

备注/Memo:
收稿日期：2025-04-25
基金项目：河南省科技攻关项目(编号：172102110115)；商丘市科技攻关项目(编号：2023047)。
作者简介：姜晓君(1986—)，女，河南商丘人，助理研究员，从事高粱遗传育种与栽培技术研究。E-mail：496529444@qq.com。
通信作者：孟彦，副研究员，主要从事高粱遗传育种与栽培技术研究。E-mail：mengyan.0901@163.com。
更新日期/Last Update: 2026-05-20