Evidence map›Paper›PMID 42372111›Full record

ArticleG3 (Bethesda, Md.)2026

Revisiting the genome assembly of Lupinus species reveals differential diploidization after a shared whole-genome duplication.

Liying Yang, Yanju Shuai, Weiran Li, Junping Gao, Jianduo Zhang, Haomin Lyu, Songyi Ji, Mingli Chen

Abstract read
In one paragraph

Article in G3 (Bethesda, Md.), 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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1 · What the graph read from it

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2 · The registry

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3 · Its place in the literature

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4 · The record

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5 · Who and what money

Authors and funding

8 authors.

Liying YangKey Laboratory of Natural Products Synthetic Biology of Ethnic Medicinal Endophytes, Yunnan Minzu University, Kunming 650500, China.
Yanju ShuaiYunnan Academy of Tobacco Science, Kunming 650231, China.
Weiran LiRaw Material Center of China Tobacco Yunnan Industrial Co., Ltd., Kunming 650201, Yunnan Province, China.
Junping GaoTechnology Center, China Tobacco Hunan Industrial Co., Ltd., Changsha 410007, Hunan, China.
Jianduo ZhangRaw Material Center of China Tobacco Yunnan Industrial Co., Ltd., Kunming 650201, Yunnan Province, China.
Haomin LyuHuaZhi Biotechnology Co., Ltd, Changsha 410000, Hunan, China.
Songyi JiTechnology Center, Yunnan Reconstituted Tobacco Co., Ltd, Kunming 650114, Yunnan Province, China.
Mingli ChenChinese Academy of Agricultural Sciences, Tobacco Research Institute, Qingdao 266101, Shandong, China.ORCID 0000-0002-0169-1814

Funding

Guangxi Key Research and Development Program AB241484021Research Foundation of "YNZY" 2026YL01
6 · The paper itself

Abstract

Accurate genome assemblies are essential for comparative genomics, yet Hi-C-guided scaffolding can introduce structural errors that misrepresent chromosome architecture and bias evolutionary inferences. Here, we identified pervasive scaffolding errors-including artificial fusions, internal inversions, and incomplete contig mounting-in 2 previously published Lupinus genomes (L. cosentinii and L. digitatus) using a segmentation method based on long terminal repeat (LTR) retrotransposon density. We reassembled both genomes, producing chromosome-level references of 472.7 Mb (16 chromosomes) and 427.2 Mb (21 chromosomes), with BUSCO completeness >98.5%. Synteny validation and reapplication of LTR profiling confirmed that all prior errors were resolved. Using these corrected genomes together with 4 additional Lupinus species and 2 outgroup legumes, we investigated postpolyploid evolution. Synonymous substitution rate (Ks) analysis revealed a genus-specific whole-genome duplication (WGD) event (Ks = 0.17) shared by all 6 Lupinus species. The proportion of WGD-derived genes varied markedly, from 60% in L. digitatus to only 36% in L. mutabilis, indicating differential diploidization. While all species retained a core set of WGD duplicates enriched in cytoskeleton organization, ion transport, and defense responses, each exhibited lineage-specific functional trajectories: cell wall modification in L. cosentinii and L. digitatus, nitrogen metabolism in L. albus and L. angustifolius, flower development in L. luteus, and stress/lipid metabolism in L. mutabilis. Our corrected assemblies provide optimal references for Lupinus comparative genomics, and our findings demonstrate that a shared WGD event can lead to both conserved and highly divergent postpolyploid fates, likely underpinning adaptive diversification within the genus.

Indexed as

DiploidyGene DuplicationGenome, PlantLupinusEvolution, MolecularGenomicsPhylogenyRetroelementsSyntenyTerminal Repeat SequencesRetroelementsgene family expansiongenome assembly errorHi-C scaffoldingLupinuspostpolyploid evolution (diploidization)whole-genome duplication (WGD)

Identifiers

PMID42372111
PMCPMC13535435

What Socratic holds

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the Socratic graph.