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个人信息

博士生导师
研究员

Email: jclong@cemps.ac.cn
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研究方向

玉米生殖发育与表观遗传学

龙金成

个人简介

2008.9 – 2012.6 中国农业大学，学士
2012.6 – 2018.6 中国农业大学，博士
2018.9 – 2022.6 John Innes Centre，博士后
2022.6 - 至今，中国科学院分子植物科学卓越创新中心，研究员

研究工作

玉米是我国第一大粮食作物，是保障国家粮食安全、支撑畜禽肉蛋白供给的核心基石。在全球气候变暖背景下，极端高温频发且加剧，已成为制约我国玉米稳产、高产的关键胁迫因子。玉米生殖发育阶段对高温高度敏感，尤其花粉发育过程极易受高温扰动，造成花粉活力下降、育性受损，最终导致玉米大幅减产。因此，挖掘玉米花粉耐热基因、解析耐热分子机制、改良现有品种的花粉耐热性是应对气候变暖、保障玉米安全生产的迫切需求。本课题组聚焦“玉米生殖发育—高温逆境应答—表观遗传调控”核心研究主线，整合遗传学、表观遗传学、多维组学、生物化学及计算生物学等多学科技术手段，开展如下研究：

1. 玉米花粉耐热关键基因挖掘、分子机理解析与分子设计育种应用。
2. 玉米花粉高温应答的表观遗传调控机制解析。
3. 玉米生殖发育表观遗传重编程机制与生物学功能解析。

主要成果

    1. Long J#, Yang C#, Xu S#, Jeager-Braet J, She W, Ono S, Walker J, Souza-Vieira Y, Schnittger A, Feng X* (2026). Multiple Argonaute complexes orchestrate epigenetic silencing in the Arabidopsis germline. Nature Communication. https://doi.org/10.1038/s41467-026-77326-1.

    2. Wang J#, Wang Q#, Peng Y, Jiang L, Lu Z, Zheng L, Li X, Liu J, Long J*, Liu J*, He Y*. (2025). ZmSSRP1 facilitates the progression of RNA polymerase II and is essential for kernel development in maize. Plant Cell. 37(4).

    3. Long J#, Walker J#, She W#, Aldridge B, Gao H, Deans S, Vickers M, Feng X. (2021) Nurse cell-derived small RNA defined paternal epigenetic inheritance in Arabidopsis. Science 373:eabh0556. (# co-first author)

    4. Long J#, Liu J#, Xia A#, Springer N, He Y*. (2021) Maize decrease in DNA methylation 1 targets RNA-directed DNA methylation on active chromatin. Plant Cell 33:2183-2196.

    5. Christophorou N, She W, Long J, Hurel A, Beaubiat S, Idir Y, Tagliaro-Jahns M, Chambon A, Solier V, Vezon D, Grelon M, Feng X, Bouché N, Mézard C*. (2020) AXR1 affects DNA methylation independently of its role in regulating meiotic crossover localization. PLOS Genetics 16:e1008894.

    6. Long J#, Xia A#, Liu J, Jing J, Wang Y, Qi C, He Y*. (2019) Decrease in DNA methylation 1 (DDM1) is required for the formation of mCHH islands in maize. Journal of Integrative Plant Biology 61:749-764.

    7. Xue M#, Long J#, Jiang Q, Wang M, Chen S, Pang Q, He Y*. (2015) Distinct patterns of the histone marks associated with recruitment of the methionine chain-elongation pathway from leucine biosynthesis. Journal of Experimental Botany 66:805-12.