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对Luffa acutangula的基因组组装和结构变异分析提供了关于开花时间和发展的见解

Aizheng Huang¹, Shuo Feng², Zhuole Ye³

¹Institute of Agricultural Science Research of Jiangmen, Jiangmen 529060, China.

Plants (Basel, Switzerland)

|July 13, 2024

概括

研究人员对Luffa acutangula蔬菜的基因组进行了测序,揭示了它与Luffa cylindrica的进化关系,并确定了可能与早期开花相关的基因扩展. 这为Luffa的育种和研究提供了宝贵的资源.

科学领域:

植物基因组学植物基因组学
农作物科学农作物科学
进化生物学进化生物学

背景情况:

卢法物种是科植物家族中的重要蔬菜和药用植物.
高质量的基因组测序对于理解作物遗传学和改进育种策略至关重要.

研究的目的:

为了生成一个高质量的,染色体水平的基因组组装Luffa acutangula (杂交系SG261).
用Luffa圆柱体进行比较基因组分析.
研究与表型特征相关的遗传变异和基因家族扩展.

主要方法:

利用PacBio长读数,Hi-C测序和10×基因组学进行基因组组装.
进行了遗传学分析以确定进化关系.
在L. acutangula和L. cylindrica之间确定了结构变异 (SVs) 和存在缺席变异 (PAVs).

主要成果:

为L. acutangula SG261实现了739.82 Mb的染色体级基因组组合.
确定了27,312个编码蛋白质的基因和特征重复序列,其中LTR占67.84%.
发现了67,128个SV和55,978个PAV,编码区域的差异很大;在L. acutangula中发现了FLOWERING LOCUS Y (FY) 转录因子家族的扩张.

结论:

Luffa acutangula比Luffa cylindrica更晚发展,两者都与Momordica charantia有着密切的关系.
FY基因家族的扩张可能解释了L. acutangula早期的开花时间.
产生的基因组作为 Luffa 育种和泛基因组研究的基础资源.

关键词:

卢法航空公司的急性.在染色体层面的基因组.开花时间开花时间脊发展的发展.结构变化的结构变化.

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