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一个未成年激素化合物的生物合成的并行进化揭示了植物和昆虫的代谢融合

Weijiao Wang 王威姣¹, Chi Zhang¹, Xinlu Chen¹

¹Department of Plant Sciences, University of Tennessee, Knoxville, TN, 37996, USA.

The New phytologist

|January 12, 2026

概括

植物可以产生青春激素III (JHIII),一种调节昆虫发育的化合物. 这项研究揭示了植物和昆虫独立进化了使用不同的酶创造相同的JH III的能力,展示了融合进化.

科学领域:

生物化学生物化学
植物科学植物科学
进化生物学进化生物学

背景情况:

植物拥有多样化的反草食防御,包括生产昆虫生长调节剂,如青年激素III (JHIII).
植物中JH III生物合成的分子基础尚不清楚,与已建立的昆虫途径不同.

研究的目的:

研究植物Cyperus iria中的JH III生物合成的分子和生化机制.
为了确定植物是否与昆虫相比,在JH III生产中使用类似或不同的酶途径.

主要方法:

使用比较基因组学和表达特征分析来确定C. iria.中的潜在的JH III通路酶.
代谢分析和体外酶测定验证了已识别的酶的功能.
在Nicotiana benthamiana中暂时途径的重建证实了植物酶在JH III生物合成中的作用.

主要成果:

赛佩鲁斯·伊里亚 (Cyperus iria) 具有类似于昆虫JH III通路的酶,但缺乏正规的法纳索酸甲基转移酶 (FAMT).
在C. iria (CiFAMT) 中的一对SABATH甲基转移酶被确定为功能性FAMT.
在一个重建的途径中,CiFAMT成功地取代了昆虫FAMT,证实了它在甲基法纳酸盐合成中的作用.

结论:

植物和昆虫已经独立进化为生物合成结构相同的JH III.
这种独立的进化涉及非同源酶的招募,证明了结构的融合进化.
这些发现对了解植物-昆虫相互作用和专门代谢物的演变有重大意义.

关键词:

塞浦路斯是海上的海.萨巴特家族的家庭安息日.融合进化的趋同.法尔内索酸甲基转移酶法尔内索酸甲基转移酶青春期激素III 的使用.甲基法尔内酸盐是什么

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