Search claims · PlantClaims

Observationobservedoriginal resultmeasured

Claim · model-written summary

The duplication analysis revealed ancient whole-genome duplication.

Taxon: Oryza sativaOryza sativat0
Outcome: ancient whole-genome duplicatione0

Verbatim

e0
“It reveals an ancient whole-genome duplication”
✓ located verbatim in the source · abstract, characters 1229–1275

t0
“Oryza sativa”
✓ located verbatim in the source · title, characters 15–27

Title

The Genomes of Oryza sativa: A History of Duplications

Jun Yu; Jun Wang; Wei Lin; et al. PLoS Biology 2005. doi:10.1371/journal.pbio.0030038

Other claims from this paper (13)

Method / resource Improved indica and japonica genome sequences have multimegabase contiguity and almost 1,000-fold improvement.
Method / resource 97.7% of genes aligned without fragmentation to mapped super-scaffolds.
Observation The estimated gene count is at least 38,000-40,000.
Observation Only 2%-3% of genes are unique to one subspecies.
Observation Intergenic regions show enormous variation.
Observation At least a quarter of the two sequences could not be aligned.
Observation SNP rate in coding regions was as low as 3.0 SNP/kb.
Observation SNP rate in transposable elements reached 27.6 SNP/kb.
Observation The analysis revealed recent segmental duplication on chromosomes 11 and 12.
Observation The analysis revealed massive ongoing individual gene duplications.
Observation Eighteen pairs of duplicated segments cover 65.7% of the genome.
Observation Seventeen duplicated segment pairs predate grass divergence.
Mechanism Ongoing gene duplications contribute to differences among grasses.

Observationobservedoriginal resultmeasured

Claim · model-written summary

An ancient tandem duplication spans core eudicots.

Taxon: core eudicotyledone0
Gene: D duplicatione0
Outcome: ancient tandem duplicatione0

Verbatim

e0
“We uncovered a so far undetected ancient tandem duplication (D duplication) spanning the whole core eudicotyledon radiation.”
✓ located verbatim in the source · abstract, characters 583–707

t0
“plant genomes”
✓ located verbatim in the source · title, characters 94–107

Title

Ancient duplication and functional differentiation of phytochelatin synthases is conserved in plant genomes

Mingai Li; Jiamei Yu; Silvia Sartore; et al. Horticulture Research 2024. doi:10.1093/hr/uhae334

Other claims from this paper (5)

Observationauthor interpretationoriginal resultmeasured

Claim · model-written summary

GPI duplication appears ancient and contradicts the proposed recent duplication model.

Outcome: duplication appears to be an ancient evente0

Not reportedTaxon

Verbatim

e0
“Thus, the duplication appears to be an ancient event, a finding incompatible with the initial hypothesis”
✓ located verbatim in the source · abstract, characters 672–776

Title

DISTRIBUTION AND EVOLUTION OF A GLUCOSEPHOSPHATE ISOMERASE DUPLICATION IN THE LEGUMINOSAE

Norman F. Weeden; Jeff J. Doyle; Matt Lavin Evolution 1989. doi:10.1111/j.1558-5646.1989.tb02614.x

Other claims from this paper (5)

Observationobservedoriginal resultmeasured

Claim · model-written summary

Whole-genome duplication analysis revealed an ancient duplication event in marama.

Taxon: Tylosema esculentumTylosema esculentume1
Outcome: ancient duplication evente2

Verbatim

e1
“Tylosema esculentum (marama bean)”
✓ located verbatim in the source · abstract, characters 0–33

e2
“Whole-genome duplication (WGD) analysis revealed an ancient duplication event in marama”
✓ located verbatim in the source · abstract, characters 921–1008

Title

Genome assembly and population analysis of tetraploid marama bean reveal two distinct genome types

Jin Li; Christopher Cullis Scientific Reports 2025. doi:10.1038/s41598-025-86023-w

Other claims from this paper (11)

Observationobservedreview summarybasis n/a

Claim · model-written summary

Genomic studies suggest ancient whole genome duplication in basal angiosperms.

Taxon: angiospermt0
Outcome: ancient whole genome duplication (WGD) eventse0

Verbatim

e0
“ancient whole genome duplication (WGD) events in basal angiosperm lineages”
✓ located verbatim in the source · abstract, characters 246–320

t0
“angiosperm”
✓ located verbatim in the source · title, characters 15–25

Title

Polyploidy and angiosperm diversification

Douglas E. Soltis; Victor A. Albert; Jim Leebens‐Mack; et al. American Journal of Botany 2009. doi:10.3732/ajb.0800079

Other claims from this paper (4)

Observationobservedoriginal resultmeasured

Claim · model-written summary

TR paralogs arose from an ancient duplication.

Taxon: MimulusMimulust0
Gene: TRe0
Outcome: ancient duplicatione0

Verbatim

e0
“the TR paralogs arose from an ancient duplication”
✓ located verbatim in the source · abstract, characters 1518–1567

t0
“Mimulus”
✓ located verbatim in the source · title, characters 14–21

Title

Monkeyflower (Mimulus) uncovers the evolutionary basis of the eukaryote telomere sequence variation

Surbhi Kumawat; Askhan Shametov; Liia R. Valeeva; et al. PLoS Genetics 2025. doi:10.1371/journal.pgen.1011738

Other claims from this paper (9)

Observation Mimulus has at least three telomere repeat sequences.
Observation Several species had telomerase RNA duplications.
Observation M. lewisii carried two divergent TR paralogs.
Observation The sister species had a pseudogenized TR paralog.
Observation M. lewisii had sequence heterogeneous telomeres.
Observation M. lewisii telomerase could use both TR paralogs for telomere synthesis.
Observation M. cardinalis expressed both duplicated TR paralogs.
Observation M. cardinalis telomeres had one repeat type.
Mechanism The authors propose that TR duplication, divergence and loss generate telomere variation.

Observationobservedoriginal resultmeasured

Claim · model-written summary

Ks plots showed ancient genome duplication in all legumes.

Taxon: legumese0
Outcome: ancient genome duplicatione0

Verbatim

e0
“Ks proportional plots clearly showed ancient genome duplication in all legumes”
✓ located verbatim in the source · abstract, characters 1143–1221

Title

Comparative sequence analysis of nitrogen fixation-related genes in six legumes

Dong Hyun Kim; Swathi Parupalli; Sarwar Azam; et al. Frontiers in Plant Science 2013. doi:10.3389/fpls.2013.00300

Other claims from this paper (7)

Observationobservedoriginal resultmeasured

Claim · model-written summary

PsCHLIs arose from an ancient legume duplication.

Taxon: peaLathyrus oleraceust0
Gene: PsCHLIse0
Outcome: ancient duplication in legumese0

Verbatim

e0
“PsCHLIs were derived from an ancient duplication in legumes”
✓ located verbatim in the source · abstract, characters 495–554

t0
“Pea”
✓ located verbatim in the source · title, characters 59–62

Title

Molecular Characterization of Mg-Chelatase CHLI Subunit in Pea (Pisum sativum L.)

Cai-jun Wu; Jie Wang; Jun Zhu; et al. Frontiers in Plant Science 2022. doi:10.3389/fpls.2022.821683

Other claims from this paper (13)

Observation PsCHLI1 and PsCHLI2 cDNAs were identified by cloning and sequencing.
Observation Both PsCHLIs were more highly expressed in leaves than other organs.
Intervention effect Abscisic acid and heat downregulated both PsCHLIs.
Observation PsCHLI1 was expressed more highly than PsCHLI2.
Observation PsCHLI1 encodes a 422-amino acid protein.
Observation PsCHLI2 encodes a 417-amino acid protein.
Observation The two proteins shared 82% amino acid identity and were chloroplast localized.
Intervention effect PsCHLI1 silencing produced yellow leaves with barely detectable Mg-chelatase activity and chlorophyll content.
Intervention effect PsCHLI2 silencing showed no obvious phenotype.
Mechanism PsCHLI1 N-terminal fragment mediated homodimer formation.
Mechanism PsCHLI1 middle fragment mediated interaction with CHLD.
Mechanism Active PsCHLI1 required combining three fragments.
Mechanism The authors identify PsCHLI1 as the key CHLI subunit.

Observationobservedoriginal resultmeasured

Claim · model-written summary

ERF subgroup IXb originated through ancient tandem duplication within IXa.

Taxon: AngiospermsMagnoliopsidat0
Gene: IXbe0
Outcome: originated from ancient tandem duplication events within IXae0

Verbatim

e0
“IXb originated from ancient tandem duplication events within IXa”
✓ located verbatim in the source · abstract, characters 1032–1096

t0
“ERF Subfamily across Angiosperms”
✓ located verbatim in the source · title, characters 92–124

Title

Ancient Duplication and Lineage-Specific Transposition Determine Evolutionary Trajectory of ERF Subfamily across Angiosperms

Xun-Ge Zhu; Ge-Ran Hutang; Li-Zhi Gao International Journal of Molecular Sciences 2024. doi:10.3390/ijms25073941

Other claims from this paper (4)

Observationobservedoriginal resultmeasured

Claim · model-written summary

Legume Adh duplication was ancient.

Taxon: legumese0
Gene: Adhe0
Outcome: gene duplicatione0
Qualifier: ancient evente0

Verbatim

e0
“gene duplication of the Adh loci in the legumes occurred as an ancient event”
✓ located verbatim in the source · abstract, characters 814–890

Title

Molecular phylogeny and evolution of alcohol dehydrogenase (Adh) genes in legumes

Tatsuya Fukuda; Jun Yokoyama; Toru Nakamura; et al. BMC Plant Biology 2005. doi:10.1186/1471-2229-5-6

Other claims from this paper (2)

Observation An expressed Adh locus was found beyond previously known legume homologues.
Observation Some legumes have at least two Adh loci in separate clades.

“ancient duplication”

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