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在Amorphophallus konjac中由外源兰诱导的葡萄甘积累:来自比较转录组分析的见解

Xiaoxian Li¹, Zhouting Zeng¹, Siyi Zhu¹

¹School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou 310053, China.

|July 29, 2025

概括

兰 (La) 通过调节参与其生物合成和荷尔蒙通路的基因来增强康雅克葡萄甘 (KGM) 的产生. 这项研究确定了由La影响的关键基因和转录因子,为KGM积累机制提供了洞察力.

科学领域:

植物生物化学和分子生物学
农业科学农业科学
食品科学与技术食品科学与技术

背景情况:

康杰克葡萄甘 (KGM),来自Amorphophallus konjac,在食品和制药中具有价值.
不一致的KGM生产对其质量和市场价值构成挑战.
众所周知,兰 (La) 促进KGM水平,但根本机制尚未完全理解.

研究的目的:

阐明兰 (La) 影响康杰克葡萄干 (KGM) 积累的分子机制.
为了确定关键的基因和途径参与KGM生物合成和激素调节在La治疗.

主要方法:

用不同度的兰 (La) 处理的Amorphophallus konjac的转录组分析.
鉴定和对差异表达基因 (DEGs) 与KGM含量的相关性分析.
定量实时PCR (qRT-PCR) 用于验证选定的DEGs.

主要成果:

兰 (La) 治疗 (20-80 mg L-1) 显著增加了KGM积累.
转录组分析显示了21047个DEG,其中48个与KGM生物合成相关,包括正相关的基因,如SuSy,INV,HK,FPK2,GPI3,PGM3,UGP2,GMPP,CslA,CslH2和MSR1.2.
关键的终端通路基因 (UGP1,UGP3,CslD3) 高度上调,激素敏感的DEGs (乙烯,奥克,吉伯瑞林) 和转录因子 (bHLH,AP2/ERF) 与KGM水平密切相关.

结论:

兰 (La) 通过协调调节生物合成和激素通路,促进KGM的积累.
参与碳水化合物/甘氨酸代谢和激素信号传递的特定基因,以及bHLH和AP2/ERF转录因子,是La对KGM生物合成影响的关键媒介.
这项研究提供了一个基础模型,通过有针对性的分子干预来理解和潜在地优化KGM生产.

关键词:

亚摩洛法勒斯科尼亚克 (Amorphophallus konjac) 是一种葡萄.康杰克葡萄康曼南 (glucomannan) 是一种葡萄糖.lanthanum 坦的使用方法转录组 (transcriptome) 是一个转录组.

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