Evidence map›Paper›PMID 21949770›Full record

ArticlePloS one2011

Comparative SNP and haplotype analysis reveals a higher genetic diversity and rapider LD decay in tropical than temperate germplasm in maize.

Yanli Lu, Trushar Shah, Zhuanfang Hao, Suketoshi Taba, Shihuang Zhang, Shibin Gao, Jian Liu, Moju Cao, Jing Wang, A Bhanu Prakash and 2 more

Open access · goldAbstract readComparative Study
In one paragraph

Article in PloS one, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 64 papers.

0numbers the graph read from it
0cells of the map it votes in
64citing papers in PubMed
3.6field-weighted citation impact, top 7% of its field
1 · What the graph read from it

What it found

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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

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3 · Its place in the literature

Who cites it

64 citing papers in PubMed, 104 citations in OpenAlex.

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4 · The record

Corrections and comments

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5 · Who and what money

Authors and funding

12 authors at 4 institutions in 3 countries.

Yanli LuMaize Research Institute, Sichuan Agricultural University, Wenjiang, Sichuan, China.
Trushar Shah
Zhuanfang Hao
Suketoshi Taba
Shihuang Zhang
Shibin Gao
Jian Liu
Moju Cao
Jing Wang
A Bhanu Prakash
Tingzhao Rong
Yunbi Xu
Sichuan Agricultural University · CNCentro Internacional de Mejoramiento de Maíz Y Trigo · MXInternational Crops Research Institute for the Semi-Arid Tropics · INChinese Academy of Agricultural Sciences · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Understanding of genetic diversity and linkage disequilibrium (LD) decay in diverse maize germplasm is fundamentally important for maize improvement. A total of 287 tropical and 160 temperate inbred lines were genotyped with 1943 single nucleotide polymorphism (SNP) markers of high quality and compared for genetic diversity and LD decay using the SNPs and their haplotypes developed from genic and intergenic regions. Intronic SNPs revealed a substantial higher variation than exonic SNPs. The big window size haplotypes (3-SNP slide-window covering 2160 kb on average) revealed much higher genetic diversity than the 10 kb-window and gene-window haplotypes. The polymorphic information content values revealed by the haplotypes (0.436-0.566) were generally much higher than individual SNPs (0.247-0.259). Cluster analysis classified the 447 maize lines into two major groups, corresponding to temperate and tropical types. The level of genetic diversity and subpopulation structure were associated with the germplasm origin and post-domestication selection. Compared to temperate lines, the tropical lines had a much higher level of genetic diversity with no significant subpopulation structure identified. Significant variation in LD decay distance (2-100 kb) was found across the genome, chromosomal regions and germplasm groups. The average of LD decay distance (10-100 kb) in the temperate germplasm was two to ten times larger than that in the tropical germplasm (5-10 kb). In conclusion, tropical maize not only host high genetic diversity that can be exploited for future plant breeding, but also show rapid LD decay that provides more opportunity for selection.

Indexed as

Tropical ClimateChromosomes, PlantGenome, PlantHaplotypesLinkage DisequilibriumPolymorphism, Single NucleotidePopulation DynamicsSeedsZea mays

Identifiers

PMID21949770
PMCPMC3174237
OpenAlexW2132213462

What OpenQuestion holds

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LicenceCC BY
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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 OpenQuestion graph.