The Genetics and Genome-Wide Screening of Regrowth Loci, a Key Component of Perennialism in Zea diploperennis

G3 : Genes - Genomes - Genetics
Anjun MaYang Yen

Abstract

Perennialism is common among the higher plants, yet little is known about its inheritance. Previous genetic studies of the perennialism in Zea have yielded contradictory results. In this study, we take a reductionist approach by specifically focusing on one trait: regrowth (the plant's ability to restart a new life cycle after senescence on the same body). To address this, six hybrids were made by reciprocally crossing perennial Zea diploperennis Iltis, Doebley & R. Guzman with inbred lines B73 and Mo17 and Rhee Flint, a heirloom variety, of Zmays L. ssp. mays All the F1 plants demonstrated several cycles of growth, flowering, senescence and regrowth into normal flowering plants, indicating a dominant effect of the Z. diploperennis alleles. The regrowability (i.e., the plants' ability to regrow after senescence) was stably transmitted to progeny of the hybrids. Segregation ratios of regrowth in the F2 generations are consistent with the trait controlled by two dominant, complementary loci, but do not exclude the influence of other modifiers or environment. Genome-wide screening with genotyping-by-sequencing technology indicated two major regrowth loci, regrowth 1 (reg1) and regrowth 2 (reg2), were on chromosomes 2 and 7, respec...Continue Reading

References

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Citations

Sep 11, 2021·Frontiers in Plant Science·Kyle W SwentowskyR Kelly Dawe

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Datasets Mentioned

BETA
PRJNA477673

Methods Mentioned

BETA
PCR
genotyping
Illumina sequencing

Software Mentioned

TASSEL
TASSEL ( Analysis by Association , Evolution and Linkage )
Gramene
R
UWBRC
_ Toolkit
qtl
Bowtie2
FASTX
Ubuntu

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