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性别特异性的乙烯反应驱动大麻树种中的花性塑性

Adrian S Monthony^1,2,3,4, Julien Roy^1,2,3,4, Maxime de Ronne^1,2,3,4

¹Département de Phytologie, Université Laval, Québec City, Québec, Canada.

The Plant journal : for cell and molecular biology

|February 5, 2026

概括

大麻植物可以因乙烯而改变性别. 这项研究揭示了XX和XY植物中独特的分子通路,确定了调节这种性可塑性的关键基因,并为稳定的品种提供了洞察力.

科学领域:

植物生物学植物生物学
遗传学遗传学是一个
性别决定的分子机制.

背景情况:

大麻sativa L. 显示显著的性可塑性,允许XX和XY个体逆转由乙烯影响的花性表型.
控制大麻中乙烯诱导的性别逆转的精确分子机制在很大程度上仍未定义.

研究的目的:

进行一项广泛的多原子分析,以乙烯诱导的Cannabis sativa的性别变化.
确定候选基因并了解涉及大麻性别决定和可塑性的分子途径.

主要方法:

整合了超过130个RNA-seq库,乙烯途径代谢物量化,以及跨XX和XY基因型的全基因组测序.
乙烯调制使用银硫酸盐和乙来诱导性别变化.
分析47个乙烯反应基因 (ERG) 的概况,并分析它们的表达模式.

主要成果:

乙烯治疗诱导了超过80%的表型性转换,在XX和XY植物之间具有明显的转录基因反应.
确定了14个高度可靠的候选基因,包括CsACS1,CsACO5,CsERF1和CsMTN,表现出性别特异和时间表达模式.
早期的转录激活发生在治疗后18小时内,在可见的花变化之前,不同的基因组在XX和XY植物中稳定了异性表型.

结论:

在XX和XY大麻植物中,性别逆转的共享能力受到由乙烯介导的独特分子轨迹的调节.
确定了位于性染色体区域的候选基因,并显示了较低的核酸多样性,表明功能约束.
提供了对乙烯反应性性塑性的高分辨率视图,并确定了开发性稳定的大麻品种的潜在目标.

关键词:

大麻大麻大麻大麻大麻大麻大麻埃塞芬电话 (Ethephon) 是一种电话.乙烯乙烯的使用情况这是一个多主题的多omics.性别的确定性性别的确定性性塑性性质性质性质性质性质性质性银硫酸硫酸盐是一种硫酸盐.翻译学翻译学翻译学翻译学

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