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Horticulture Research:菠萝蜜基因组揭示其果实演化及其在中国的驯化历史

已有 697 次阅读 2022-8-7 23:43 |个人分类:每日摘要|系统分类:论文交流

Jackfruit genome and population genomics provide insights into fruit evolution and domestication history in China

第一作者Xinggu Lin

第一单位中科院华南植物园

通讯作者Ming Kang


 Abstract 

背景回顾As the largest known tree-born fruit in the world, jackfruit (Artocarpus heterophyllus) is an important cultivated crop in tropical regions of South and Southeast Asia. The species has been cultivated in China for more than 1,000 years, but the history of its introduction to the country remain unclear. 


主要研究We assembled a high-quality chromosome-level genome of jackfruit into 985.63Mb with scaffold N50 of 32.81 Mb. We analyzed whole-genome resequencing data of 295 landraces to investigate the domestication history in China and agronomic traits evolution of jackfruit. 


结果1-群体演化Population structure analysis revealed that jackfruits of China could be traced back to originate from Southeast Asia and South Asia independently. 


结果2-果实发育相关基因Selection signals between jackfruit and its edible congener, cempedak (Artocarpus integer), revealed several important candidate genes associated fruit development and ripening


结果3-果实质地关键基因Moreover, analyses of selective sweeps and gene expression revealed that the AhePG1 gene may be the major factor in determining fruit texture


结论This study not only resolves the origins of jackfruit of China, but also provides valuable genomic resources for jackfruit breeding improvement and offers insights into fruit size evolution and fruit texture changes.



 摘 要 

菠萝蜜是世界上已知的最大树生水果,在南亚和东南亚热带地区作为重要的栽培作物被广泛种植。菠萝蜜在中国已经有1000多年的种植历史,但其合适传入中国尚不清楚。本文中,作者将报道了一个高质量、染色体水平的菠萝蜜基因组,大小约为985.63Mb,scaffold N50长达32.81Mb。通过对295个地方品种的全基因组重测序数据分析,作者研究了菠萝蜜在中国的驯化历史和农艺性状演化。群体结构分析表明,中国的菠萝蜜可以追溯到东南亚和南亚,并且相互独立。通过比较菠萝蜜与其同属可食用植物榴莲蜜比较分析,通过选择信号鉴定到了几个与果实发育和成熟相关的重要候选基因。此外,对选择性扫描和基因表达的分析表明,AhePG1基因可能是决定菠萝蜜果实质地的主要因子。本文的研究结果不仅解决了中国菠萝蜜的起源问题,而且为菠萝蜜育种和改良提供了宝贵的基因组资源,并为果实大小演化和果实质地改变提供了新的见解。




 康 明 


个人简介:

1993-1997年,华中农业大学,学士;

2000-2002年,中科院武汉植物园,硕士;

2003-2006年,中科院武汉植物园,博士。


研究方向植物遗传资源与进化,重点以苦苣苔科报春苣苔属(Primulina)植物为研究对象,开展华南喀斯特特有植物生物多样保育、遗传进化及资源利用的基础和应用基础研究,主要研究内容包括:

1)报春苣苔属植物多样性调查、引种保育与驯化利用;

2)苦苣苔科植物对喀斯特特殊生境的响应与适应;

3)植物基因组大小的进化及其环境适应;

4)报春苣苔属物种形成与适应性进化;

5)报春苣苔苣苔属基因组资源与基因发掘。


doi: https://doi.org/10.1093/hr/uhac173


Journal: Horticulture Research

Published date: August 04, 2022


Cite:
Xinggu Lin, Chao Feng, Tao Lin, A J Harris, Yingzhi Li, Ming Kang. Jackfruit genome and population genomics provide insights into fruit evolution and domestication history in China, Horticulture Research, 2022. DOI: https://doi.org/10.1093/hr/uhac173



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