Heterosis-related genes under different planting densities in maize

dc.contributor.author Ma, Juan
dc.contributor.author Zhang, Dengfeng
dc.contributor.author Cao, Yanyong
dc.contributor.author Wang, Lifeng
dc.contributor.author Li, Jingjing
dc.contributor.author Lubberstedt, Thomas
dc.contributor.author Wang, Tianyu
dc.contributor.author Li, Yu
dc.contributor.author Li, Huiyong
dc.contributor.department Agronomy
dc.date 2018-08-09T22:12:11.000
dc.date.accessioned 2020-06-29T23:05:51Z
dc.date.available 2020-06-29T23:05:51Z
dc.date.copyright Mon Jan 01 00:00:00 UTC 2018
dc.date.embargo 2019-08-02
dc.date.issued 2018-08-02
dc.description.abstract <p>Heterosis and increasing planting density have contributed to improving maize grain yield (GY) for several decades. As planting densities increase, the GY per plot also increases whereas the contribution of heterosis to GY decreases. There are trade-offs between heterosis and planting density, and the transcriptional characterization of heterosis may explain the mechanism involved. In this study, 48 transcriptome libraries were sequenced from four inbred Chinese maize lines and their F1 hybrids. They were planted at densities of 45,000 plants/ha and 67,500 plants/ha. Maternal-effect differentially expressed genes (DEGs) played important roles in processes related to photosynthesis and carbohydrate biosynthesis and metabolism. Paternal-effect DEGs participated in abiotic/biotic stress response and plant hormone production under high planting density. Weighted gene co-expression network analysis revealed that high planting-density induced heterosis-related genes regulating abiotic/biotic stress response, plant hormone biosynthesis, and ubiquitin-mediated proteolysis but repressed other genes regulating energy formation. Under high planting density, maternal genes were mainly enriched in the photosynthesis reaction center, while paternal genes were mostly concentrated in the peripheral antenna system. Four important genes were identified in maize heterosis and high planting density, all with functions in photosynthesis, starch biosynthesis, auxin metabolism, gene silencing, and RNA interference.</p>
dc.description.comments <p>This is a mansucript of an article published as Ma, Juan, Dengfeng Zhang, Yanyong Cao, Lifeng Wang, Jingjing Li, Thomas Lübberstedt, Tianyu Wang, Yu Li, and Huiyong Li. "Heterosis-related genes under different planting densities in maize (Zea mays L.)." <em>Journal of Experimental Botany</em> (2018). doi: <a href="https://doi.org/10.1093/jxb/ery282">10.1093/jxb/ery282</a>. Posted with permission.</p>
dc.format.mimetype application/pdf
dc.identifier archive/lib.dr.iastate.edu/agron_pubs/518/
dc.identifier.articleid 1567
dc.identifier.contextkey 12631780
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath agron_pubs/518
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/4881
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/agron_pubs/518/2018_Lubberstedt_HeterosisRelatedManuscript.pdf|||Sat Jan 15 00:45:26 UTC 2022
dc.source.uri 10.1093/jxb/ery282
dc.subject.disciplines Agricultural Science
dc.subject.disciplines Agronomy and Crop Sciences
dc.subject.disciplines Plant Breeding and Genetics
dc.subject.keywords differentially expressed gene
dc.subject.keywords heterosis
dc.subject.keywords maize
dc.subject.keywords planting density
dc.subject.keywords transcriptome
dc.subject.keywords weighted gene co-expression network analysis
dc.title Heterosis-related genes under different planting densities in maize
dc.type article
dc.type.genre article
dspace.entity.type Publication
relation.isAuthorOfPublication 4e4330cd-db15-4ac5-8924-41119139cf32
relation.isOrgUnitOfPublication fdd5c06c-bdbe-469c-a38e-51e664fece7a
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