首页|A haplotype-resolved genome for Rhododendron × pulchrum and the expression analysis of heat shock genes

A haplotype-resolved genome for Rhododendron × pulchrum and the expression analysis of heat shock genes

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Rhododendron is the largest genus in Ericaceae and is well known for its diversity and beauty of flowers present in different species,making it a much-revered lineage of ornamental plants.Many species of Rhododendron are intolerant of high temperatures,which are becoming more common and intense in urban areas under global climate change.Therefore,the discovery and description of genes from heat-tolerant Rhododendron lineages are essential in the development of new climate-resilient cultivars.One such species known to be heat tolerant is Rhododendron × pulchrum Sweet.To better understand the genomics of heat tolerance in this species,we assembled a haplotype-resolved and chromosome-scale genome for R.× pulchrum,which had a genome size of 509 Mb;a scaffold N50 of 37 251 370 bp;and contained 35 610 genes.In addition,based on the same reannotation pipeline,we conducted pan-genomic analyses for all seven available chromosome-scale Rhododendron genomes and found 14415 gene groups shared across all species and 18018 gene groups distributed in the other species,including 1879 gene groups found in only a single species.Finally,we analyzed the transcriptomic data from heat-treated and non-heat-treated R.× pulchrum plants to quantify the genes that are most important during heat stress in an effort to inform the development of climate-resilient cultivars.This study provides insight into the genome diversity in Rhododendron and targets several genes related to agronomic traits that may help in further analysis.

Ericaceaegenome evolutionheat shock proteinshorticulturepan-genome

Jian-Shuang Shen、Lan Lan、Sheng-Long Kan、He-Feng Cheng、Dan Peng、Zi-Yun Wan、Yue Hu、Xiao-Ling Huang、Xue-Qin Li、Yuan-Jun Ye、Luke R.Tembrock、Zhi-Qiang Wu、Song-Heng Jin

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Jiyang College,Zhejiang A&F University,Zhuji 311800,Zhejiang,China

Guangdong Laboratory of Lingnan Modern Agriculture,Genome Analysis Laboratory of the Ministry of Agriculture and Rural Affairs,Agricultural Genomics Institute at Shenzhen,Chinese Academy of Agricultural Sciences,Shenzhen Branch,Shenzhen 518120,China

School of Medical,Molecular & Forensic Sciences,Murdoch University,90 South St,Perth,WA,Australia

Kunpeng Institute of Modern Agriculture at Foshan,Shenzhen Branch,Guangdong Laboratory of Lingnan Modern Agriculture,Agricultural Genomics Institute at Shenzhen,Chi

Kunpeng Institute of Modern Agriculture at Foshan,Shenzhen Branch,Guangdong Laboratory of Lingnan Modern Agriculture,Agricultural Genomics Institute at Shenzhen,Chinese Academy of Agricultural Sciences,Foshan 528200,Guangdong,China

Guangdong Key Laboratory of Ornamental Plant Germplasm Innovation and Utilization,Environmental Horticulture Research Institute,Guangdong Academy of Agricultural Sciences,Guangzhou 510640,China

Department of Agricultural Biology,Colorado State University,Fort Collins 80523,CO,USA

Department of life science and health,Huzhou College,Huzhou 313000,Zhejiang,China

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国家重点研发计划国家自然科学基金国家自然科学基金浙江省自然科学基金startup fund of the Chinese Academy of Agricultural Sciences Elite Youth ProgramKunpeng Institute of Modern Agriculture at Foshan

2019YFE01189003197164132201608LY16C160011

2024

10.1111/jse.13007

植物分类学报
中国科学院植物研究所　中国植物学会

植物分类学报

CSTPCD
影响因子：0.322
ISSN：1674-4918
年,卷(期)：2024.62(3)
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