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Developing a new model system for potato genetics by androgenesisFA

摘要High heterozygosity and tetrasomic inheritance complicate studies of asexually propagated poly-ploids, such as potato. Reverse genetics ap-proaches, especially mutant library construction, can be an ideal choice if a proper mutagenesis genotype is available. Here, we aimed to generate a model system for potato research using anther cultures of Solanum verrucosum, a self-compatible diploid po-tato with strong late blight resistance. Six of the 23 regenerants obtained (SVA4, SVA7, SVA22, SVA23, SVA32, and SVA33) were diploids, and their homo-zygosity was estimated to be>99.99%with 22 pol-ymorphic InDel makers. Two lines—SVA4 and SVA32—had reduced stature (plant height≤80 cm), high seed yield (>1,000 seeds/plant), and good tuber set (>30 tubers/plant). We further confirmed the full homozygosity of SVA4 and SVA32 using whole-genome resequencing. These two regenerants pos-sess all the characteristics of a model plant:diploidy, 100% homozygosity, self-compatibility, and ame-nability to transgenesis. Thus, we have successfully generated two lines, SVA4 and SVA32, which can potentially be used for mutagenesis and as model plants to rejuvenate current methods of conducting potato research.

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作者 Miru Du [1] Ting Wang [1] Qun Lian [2] Xiaojie Zhang [1] Guohui Xin [1] Yuanyuan Pu [1] Glenn J.Bryan [3] Jianjian Qi [1] 学术成果认领
作者单位 Inner Mongolia Potato Engineering and Technology Research Center, Inner Mongolia University, Hohhot 010021, China [1] Shenzhen Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Genome Analysis Laboratory of the Ministry of Agriculture, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen 518000, China [2] Cell and Molecular Sciences, The James Hutton Institute, Invergowrie, Dundee DD25DA, UK [3]
栏目名称 New Technologies
发布时间 2021-04-12
基金项目
We thank Jiming Jiang(Michigan State University)and Ruo-fang Zhang(Inner Mongolia University)for useful discussions This work was supported by the National Natural Science Foundation of China Natural Science Foundation of Inner Mongolia Autonomous Region Inner Mongolia Autonomous Region Science and Technology Innovation Guide Award Fund to J Q.,and Inner Mongolia Young Technological Talents Fund
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植物学报(英文版)

植物学报(英文版)

2021年63卷4期

628-633页

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