Timothy Frey, Daowen Huo, Melanie Medina, Branden C. Ritter, Laura E. Lindsey, Maria Soledad Benítez Ponc. Fungal communities associated with corn in a diverse long-term crop rotation in Ohio.. 2023. agriXiv.2023.00170
Fungal communities associated with corn in a diverse long-term crop rotation in Ohio.
DOI: 10.31220/agriRxiv.2023.00170
Statement: This article is a preprint and has not been peer-reviewed. It reports new research that has yet to be evaluated and so should not be used to guide clinical practice.
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Abstract: Abstract Crop rotation is a cultural practice in disease management used to break the disease cycle resulting in a reduction of inoculum. In Ohio, crop rotations have been reduced in diversity, with many farmers shifting to corn-soy rotations from more diverse rotations featuring wheat and forage crops. We investigated the impact of this shift on soil fungal communities under corn by conducting synthetic long-read amplicon sequencing. DNA was extracted from soil sampled during the corn growing season at two locations in Ohio with replicated long-term rotation plots in corn-soybean (CS) and a corn-soybean-winter wheat rotation (CSW) in 2018, 2019, and 2020.18s-ITS amplicons were sequenced using Illumina paired with Loopgenomics? technology. PERMANOVA analysis revealed that fungal communities were significantly impacted by location, rotation, and time. Shannon and Simpson diversity indices implied fungal species diversity was significantly higher in the CS rotation. Indicator species analysis revealed 20 species indicative of the CSW rotation, including Mortierella , Hymenoschyphus , Ascobolus , and Saitozyma species, and 36 species indicative of the CS rotation, including Fusarium , Neoaschocyta , Zalerion , and Trichoderma species, among others. Indicator species ASV reads for the CSW rotation were not correlated with the decline in corn yield or soil N, C, or active carbon. However, they were positively correlated with soil organic matter.
Key words: rotation; corn; csw; ohio; cs; specieSubmit time: 1 January 2023
Copyright: The copyright holder for this preprint is the author/funder, who has granted agriXiv a license to display the preprint in perpetuity. -
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