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The haplotype-resolved genome assembly of the hexaploid kiwifruit Actinidia deliciosa reveals its hybrid origin and polysomic inheritance.

Plant communications - 13 Oct 2025

Li Xiaolong, Kuhl Heiner, Zhu Siting, Xie Shuangling, Zhang Chaofan, Huo Liuqin, Hu Xiaoli, Gong Jinli, Wang Minhui, Yin Xueren, Sun Xuepeng

Abstract excerpt

The kiwifruit (genus Actinidia) exhibits extensive polyploidy, with natural populations ranging from diploid to tetraploid, hexaploid, and even higher ploidy levels. Actinidia deliciosa (green kiwifruit) is typically hexaploid (2n = 6x = 174), whereas its close relative A. chinensis (golden kiwifruit) is primarily diploid (2n = 2x = 58) or tetraploid. This ploidy diversity reflects a reticulate evolutionary...

Topics

Actinidia
Genome, Plant
Haplotypes
Polyploidy
Genetic Variation
Agriculture
Plant Breeding
Hybridization, Genetic
Genes, Plant
Gene Expression Regulation, Plant

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PMID: 40629692
DOI: 10.1016/j.xplc.2025.101436
PMCID: PMC12545813

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