瓜子中的DIR基因家族:进化,压力表达特征和ClDIR8的功能探索
Kaijing Zhang1,2,3, Zhu Wang2, Huiyu Tian2
1Key Laboratory of Horticultural Crop Germplasm Innovation and Utilization (Co-Construction by Ministry and Province), Institute of Horticulture, Anhui Academy of Agricultural Sciences, Hefei 230001, China.
International journal of molecular sciences
|August 28, 2025
概括
这项研究在西瓜中发现了22个DIR基因,揭示了它们在应激反应中的作用. 发现 ClDIR8 是一个关键基因,它对多重压力做出反应,并与过氧化酶和催化酶相互作用.
科学领域:
- 植物分子生物学
- 基因组学
- 生物化学
背景情况:
- 导体蛋白 (DIR) 对植物发育和防御机制至关重要.
- 在西瓜 (Citrullus lanatus) 中对DIR基因家族的系统性表征是有限的,阻碍了对其功能的理解.
研究的目的:
- 鉴定和描述西瓜中的Dirigent基因家族.
- 研究ClDIR基因的表达模式和潜在功能,特别是在压力条件下.
- 为潜在的育种应用确定参与应激反应的关键ClDIR基因.
主要方法:
- 用于基因识别和分类的生物信息分析.
- 为了获得进化见解,进行了遗传学和合成分析.
- 对cis作用元素的促进体分析.
- 在各种压力下进行基因表达分析 (转录组和qRT-PCR).
- 细胞下定位,酵母双杂交和双分子光补充测定蛋白质相互作用.
主要成果:
- 确定了22个ClDIR基因,在染色体中分布不均,并分为三个子家族.
- 协同复制是ClDIR家族扩张的主要驱动因素.
- 大多数ClDIR基因表现出应激反应元素和独特的组织特异性表达,具有高根表达.
- 十八个ClDIR基因对16种不同的压力做出了反应,在所有测试条件中,ClDIR8表现不同.
- ClDIR8局部化到过氧体,并与过氧酶和酶相互作用.
结论:
- 在西瓜中,ClDIR基因家族的特点是通过协同复制和进化保护扩展.
- ClDIR基因在植物应激反应中起着重要作用,ClDIR8被确定为关键候选者.
- 这些发现为了解西瓜的应激耐受性和通过育种改善未来的作物提供了宝贵的见解.
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