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Vitamin and zeatin treatments promote colchicine-induced haploid chromosome doubling in maize

文献类型： 外文期刊

作者： Chen, Chen 1 ; Zhang, Yuling 1 ; Liu, Chenxu 1 ; Li, Jinlong 1 ; Zhao, Jiuran 2 ; Wang, Yuandong 2 ; Chen, Shaojiang 1 ;

作者机构： 1.China Agr Univ, Sanya Res Inst, Coll Agron & Biotechnol, Natl Maize Improvement Ctr China, Beijing 100193, Peoples R China

2.Maize Res Inst, Beijing Acad Agr & Forestry Sci, Beijing 100097, Peoples R China

关键词： Antimitotic reagent; Artificial chromosome doubling; Transcriptomic; Metabolomic; Maize

期刊名称：CROP JOURNAL （ 影响因子：5.6； 五年影响因子：6.0 ）

ISSN： 2095-5421

年卷期： 2024 年 12 卷 6 期

页码：

收录情况： SCI

摘要： Doubled haploid (DH) technology is an efficient method used in commercial maize breeding. Chromosome doubling is a vital step of DH technology; however, the underlying processes regulating chromosome doubling of haploid is still not well understood, which is key to optimize the technology. In this study, the immature haploid embryos of the maize inbred line Zheng58 treated with amiprophos-methyl (APM) or colchicine were used to analyze transcriptomic and metabolomic changes, 75 and 60 differential expressed metabolites (DEMs) were identified between control treatment, respectively. Most differentially expressed genes (DEGs) related to artificial chromosome doubling were down regulated; these were mainly involved in mitosis process. Both DEMs and DEGs co-expression analyses showed that, compared to controls, zeatin biosynthesis and cofactor and vitamin metabolism were significantly enriched in both APM and colchicine treatments. In a parallel experiment, exogenous vitamins including thiamine, nicotinic acid, vitamin B6, or trans-zeatin were added to colchicine treatment; there were synergistic effects between vitamins or zeatin and colchicine in haploid artificial chromosome doubling. These results provide novel insights in exploring the molecular responses to antimitotic reagents at both the transcriptomic and metabolomic levels. In addition, the application efficiency of haploid breeding will be greatly improved by the key factors for artificial chromosome doubling. (c) 2024 Crop Science Society of China and Institute of Crop Science, CAAS. Production and hosting by Elsevier B.V. on behalf of KeAi Communications Co., Ltd. This is an open access article under the CC BY-NC- ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

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