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identification of Regulatory DNA Elements Using Genome-wide Mapping of dnase i hypersensitive sites during Tomato Fruit Development

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Molecular Plant 2016年第8期9卷 1168-1182页

作者： Zhengkun Qiu Ren Li Shuaibin Zhang Ketao Wang Meng Xu Jiayang Li Yongchen Du Hong YU Xia Cui Key Laboratory of Biology and Genetic improvement of Horticultural Crops of the Ministry of Agriculture Sino-Dutch Joint Laboratory of Horticultural Genomics Institute of Vegetables and Flowers Chinese Academy of Agricultural Sciences Beijing 100081 China State Key Laboratory of Plant Genomics and National Center for Plant Gene Research (Beijing) Institute of Genetics and Developmental Biology Chinese Academy of Sciences Beijing 100101 China These authors contributed equally to this article.

Development and ripening of tomato fruit are precisely controlled by transcriptional regulation, which de- pends on the orchestrated accessibility of regulatory proteins to promoters and other c/s-regulatory DNA elements. This accessibility and its effect on gene expression play a major role in defining the develop- mental process. To understand the regulatory mechanism and functional elements modulating morpholog- ical and anatomical changes during fruit development, we generated genome-wide high-resolution maps of dnase i hypersensitive sites （DHSs） from the fruit tissues of the tomato cultivar ＂Moneymaker＂ at 20 days post anthesis as well as break stage. By exploring variation of DHSs across fruit development stages, we pinpointed the most likely hypersensitive sites related to development-specific genes. By detecting binding motifs on DHSs of these development-specific genes or genes in the ascorbic acid biosynthetic pathway, we revealed the common regulatory elements contributing to coordinating gene transcription of plant ripening and specialized metabolic pathways. Our results contribute to a better understanding of the regulatory dynamics of genes involved in tomato fruit development and ripening.

关键词： dnase i hypersensitive sites cis-regulatory element gene expression fruit development tomato

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identification of regulatory DNA elements using genome-wide mapping of dnase i hypersensitive sites during tomato fruit development

Identification of regulatory DNA elements using genome-wide ...

引用

2016年全国植物生物学大会

作者： Zhengkun Qiu Ren Li Shuaibin Zhang Ketao Wang Meng Xu Jiayang Li Yongchen Du Hong Yu Xia Cui Key Laboratory of Biology and Genetic improvement of Horticultural Crops of the Ministry of Agriculture Sino-Dutch Joint Laboratory of Horticultural GenomicsInstitute of Vegetables and FlowersChinese Academy of Agricultural Sciences State Key Laboratory of Plant Genomics and National Center for Plant Gene Research (Beijing) Institute of Genetics and Developmental BiologyChinese Academy of Sciences

Development and ripening of tomato fruit are precisely controlled by transcriptional regulation,which depends on the orchestrated accessibility of regulatory proteins to promoters and other cis-regulatory DNA elements. This accessibility and its effect on gene expression play a major role in defining the developmental process. To understand the regulatory mechanism and functional elements modulating morphological and anatomical changes during fruit development,we generated genomewide high-resolution maps of dnase i hypersensitive sites(DHSs) from the fruit tissues of the tomato cultivar ?Moneymaker? at 20 days post anthesis as well as break stage. By exploring variation of DHSs across fruit development stages,we pinpointed the most likely hypersensitive sites related to development-specific genes. By detecting binding motifs on DHSs of these development-specific genes or genes in the ascorbic acid biosynthetic pathway,we revealed the common regulatory elements contributing to coordinating gene transcription of plant ripening and specialized metabolic pathways. Our results contribute to a better understanding of the regulatory dynamics of genes involved in tomato fruit development and ripening.

关键词： dnase i hypersensitive sites cis-regulatory element gene expression fruit development tomato

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