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环境污染物人青素诱导ABA-依赖的跨代效应Gemmae休眠在Marchantia多态

Juan I Tolopka¹, Maya Svriz², Tamara M Ledesma¹

¹Instituto de Agrobiotecnología del Litoral, Centro Científico Tecnológico CONICET Santa Fe, Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral-CONICET, Colectora Ruta Nacional No. 168 km. 0, Paraje El Pozo, Santa Fe 3000, Argentina.

Plants (Basel, Switzerland)

|November 9, 2024

概括

素暴露会诱导肝宝石的休眠状态,这是一个依赖于酸 (ABA) 生物合成的跨代效应. 这突出了ABABA.

科学领域:

环境毒理学环境毒理学
植物生理学植物生理学
分子生物学分子生物学

背景情况:

多环芳 (PAH) 像炭一样是来自化石燃料的环境污染物.
肝,如 *Marchantia polymorpha*,是研究植物应激反应的模型生物.
酸 (ABA) 是一个关键的植物激素,调节压力耐受性和休眠性.

研究的目的:

研究酸 (ABA) 在 *Marchantia polymorpha* 对素的耐受性中的作用.
为了确定ABA通路是否介导草原诱导的植物生长和体休眠效应.
阐明基因和荷尔蒙机制,这些机制是植物对PAH污染的抵御能力的基础.

主要方法:

使用了缺乏 ABA-生物合成 (*Mpaba1*) 和 ABA-感知 (*Mppyl1*) 的 *Marchantia polymorpha* 的突变种.
评估了 antracen 对植物生长抑制和 gemmae 休眠 (发芽率) 的影响.
监测ABA标志物基因表达,以应对人草治疗.

主要成果:

安素以剂量依赖的方式抑制了肝草的生长,独立于ABA通路.
暴露于母植物的炭素诱导了 gemmae 的跨代休眠状态,减少了发芽.
来自 *Mpaba1* 突变的 Gemmae 没有显示休眠延迟,与野生类型和 *Mppyl1* 突变不同,表明 ABA 生物合成是至关重要的.
炭治疗强烈诱导了ABA标记基因.

结论:

在 *Marchantia polymorpha* 中,素诱导的 gemmae 休眠依赖于母植物中的 ABA 生物合成,由 MpABA1.1 介导.
这项研究揭示了一种复杂的相互作用,在这种相互作用中, antracen 触发了 ABA 介导的反应,影响了生殖成功.
研究结果表明,通过操纵ABA通路,有可能在受污染的环境中增强植物的弹性.

关键词:

亚酸突变体的突变体生态影响生态影响杰玛发芽的时间肝草的耐受性肝草的耐受性聚环芳香碳化合物聚环芳香碳化合物监管监管监管监管监管监管

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