Development of homozygous tetraploid potato and whole genome doubling-induced the enrichment of H3K27ac and potentially enhanced resistance to cold-induced sweetening in tubers
作者机构：Department of Biological ScienceCollege of Life SciencesSichuan Normal UniversityChengdu 610101SichuanChina Plant Functional Genomics and Bioinformatics Research CenterSichuan Normal UniversityChengdu 610101SichuanChina Crop Research InstituteSichuan Academy of Agricultural SciencesChengdu 610066China Horticulture InstituteSichuan Academy of Agricultural SciencesChengdu 610066China
出 版 物：《Horticulture Research》 (园艺研究（英文）)
年 卷 期：2023年第10卷第3期
页 面：271-283页
核心收录：
学科分类：0710[理学-生物学] 09[农学] 0901[农学-作物学] 0902[农学-园艺学]
基 金：supported by grants from the National Natural Science Foundation of China(31900386 to Z.Z.) Sichuan Science and Technology Program(2021YFH0025 to Z.Z.and 2021YFYZ0019 to B.Z.and Z.Z.) State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China at Sichuan Agricultural University(SKL-KF202205 to B.Z.) State Key Laboratory of Crop Biology Open Fund(2020KF01 to B.Z.)
主 题：homozygous doubling resistance
摘 要：Polyploid plants typically display advantages on some agronomically important traits over their diploid *** studies have shown genetic,transcriptomic,and epigenetic dynamics upon polyploidization in multiple plant ***,few studies have unveiled those alternations imposed only by ploidy level,without any interference from *** potato is highly ***,in this study,we developed two homozygous autotetraploid lines and one homozygous diploid line in parallel from a homozygous diploid *** confirmed their ploidy levels using chloroplast counting and ***-FISH and genome re-sequencing validated that these potato lines are nearly *** investigated variations in phenotypes,transcription,and histone modifications between two *** autotetraploid lines produced larger but fewer tubers than the diploid ***,each autotetraploid line displayed ploidy-related differential expression for various *** also discovered a genomewide enrichment of H3K27ac in genic regions upon whole-genome doubling(WGD).However,such enrichment was not associated with the differential gene expression between two *** tetraploid lines may exhibit better resistance to cold-induced sweetening(CIS)than the diploid line in tubers,potentially regulated through the expression of CIS-related key genes,which seems to be associated with the levels of H3K4me3 in cold-stored *** findings will help to understand the impacts of autotetraploidization on dynamics of phenotypes,transcription,and histone modifications,as well as on CIS-related genes in response to cold storage.
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