Structural characteristics of the melon mitochondria genome  

作　　者：Haonan Cui Zhuo Ding Qianglong Zhu Peng Gao 

机构地区：[1]College of Horticulture Science and Technology,Hebei Normal University of Science and Technology,Qinhuangdao 066004,China [2]Hebei Key Laboratory of Horticultural Germplasm Excavation and Innovative Utilization,Qinhuangdao 066004,China [3]Department of Horticulture,College of Agronomy,Jiangxi Agricultural University,Nanchang 330045,China [4]College of Horticulture and Landscape Architecture,Northeast Agricultural University,Harbin 150036,China [5]Key Laboratory of Biology and Genetic Improvement of Horticulture Crops(Northeast Region),Ministry of Agriculture and Rural Affairs,Northeast Agricultural University,Harbin 150036,China

出　　处：《Vegetable Research》2022年第1期182-187,共6页蔬菜研究（英文）

基　　金：funded by Scientific Research Foundation of Hebei Normal University of Science and Technology (2022YB004);the National Nature Science Foundation of China (U21A20229 and 31960607).

摘　　要：The mitochondrial genome can provide important genetic information of melon.We reported the mitochondrial genome sequence of melon in a previous study,the structural characteristics of the melon mitochondrial genome were further analyzed in the present study.The mitochondrial genome of melon is comprised of three circular DNA molecules,with a total length of about 2.9 Mb,contains 4,861 pairs of homologous repeats,439 pairs of inverted repeats,653 tandem repeats and 218 SSR sequences.The coding genes accounted for 1.54%and non-coding gene sequences accounted for 98.46%of the melon mitochondrial genome.The total repetitive sequence of mitochondrial genome of melon was the highest among Cucumis melo,Cucumis sativus,Cucurbita pepo and Citrullus lanatus.The large number of repeated sequences and nuclear genome sequences were the main reason for the increasing size and variation of melon mitochondrial genome.Melon mitochondrial genome has the highest GC content and tRNA quantity.These regions were the main source of mitochondrial genome differences among all species here analyzed.

关 键 词：CUCUMIS CHARACTERISTICS CUCURBITA 

分 类 号：Q943.2[生物学—植物学]