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GenomicGenomics information provides a fundamental tool for modern crop breeding. SweetpotatoSweet potato [Ipomoea batatas (L.) Lam.] is a globally important crop. However, the genomeGenome of sweetpotato is understudied due to its highly heterozygous hexaploidHexaploid nature, preventing straightforward access to its genomicGenomics landscape. Here, we summarize the previous and on-going efforts in the US in the development of reference genomesReference genome for sweetpotato. GenomeGenome assembliesAssembly of diploid wild relatives, I. trifida and I. triloba, were first generated to serve as robust references for the hexaploidHexaploid cultivated sweetpotato. Taking advantage of recently improved sequencing technologies and assemblyAssembly algorithms, we have been generating phased genomeGenome assembliesAssembly of hexaploidy sweetpotato. Chromosome-scale haplotype-resolved genomeGenome assembliesAssembly, along with high-quality genomeGenome annotations of hexaploidHexaploid sweetpotato, have been made available to the scientific and breeding communities. Multiple reference-grade phased hexaploidHexaploid sweetpotato genomesGenome set the foundation for construction of a pan-genomeGenome comprising intra- and inter-genome variations that will facilitate biological discovery and breeding of sweetpotato.

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US Efforts in Sweetpotato Genome Sequencing: Advances in the Development of Reference Genomes to Facilitate Research and Breeding of a Key Food Security Crop

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  • 出版模式：

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  • 发表日期：

    2025年

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  • Shan Wu,
  • Mercy Kitavi,
  • John P. Hamilton,
  • C. Robin Buell,
  • Zhangjun Fei

摘要

GenomicGenomics information provides a fundamental tool for modern crop breeding. SweetpotatoSweet potato [Ipomoea batatas (L.) Lam.] is a globally important crop. However, the genomeGenome of sweetpotato is understudied due to its highly heterozygous hexaploidHexaploid nature, preventing straightforward access to its genomicGenomics landscape. Here, we summarize the previous and on-going efforts in the US in the development of reference genomesReference genome for sweetpotato. GenomeGenome assembliesAssembly of diploid wild relatives, I. trifida and I. triloba, were first generated to serve as robust references for the hexaploidHexaploid cultivated sweetpotato. Taking advantage of recently improved sequencing technologies and assemblyAssembly algorithms, we have been generating phased genomeGenome assembliesAssembly of hexaploidy sweetpotato. Chromosome-scale haplotype-resolved genomeGenome assembliesAssembly, along with high-quality genomeGenome annotations of hexaploidHexaploid sweetpotato, have been made available to the scientific and breeding communities. Multiple reference-grade phased hexaploidHexaploid sweetpotato genomesGenome set the foundation for construction of a pan-genomeGenome comprising intra- and inter-genome variations that will facilitate biological discovery and breeding of sweetpotato.