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Exploring and Capitalizing on Genotypic Variation of the Oat Microbiome

出版	ProQuest LLC, 2023
URL	http://books.google.com.hk/books?id=9Vx60AEACAAJ&hl=&source=gbs_api

註釋With both a changing climate and increasing demand for more sustainable agroecosystems (Altieri et al., 2017; Delonge et al., 2016), it is imperative that we continue to innovate and refine our agricultural systems. Crop rotations are an ancient strategy for improving crop health and productivity through several biotic and abiotic changes to the soil known as soil legacy effects (Jernigan et al., 2020). These soil legacy effects have been shown to vary not only by crop species, but also by the cultivars within a given species (Ellouze et al. 2013). These variations indicate a certain amount of host genetic control over microbial community assembly. This thesis focuses on the soil legacy effects of various oat (Avena sativa) genotypes and the benefits or detriments these legacy effects confer to subsequently planted oat and corn crops (Zea mays). This focus was explored through three main goals: 1) Determining how the genotype dependent changes in soil legacy affect corn traits 2) Using statistical modeling tools to use microbial community data to predict outcomes in oats and next-season corn while also identifying candidate mutualists/parasites 3) Associate genomic regions within elite oat genotypes that control the assembly of the rhizosphere community in multiple environmental contexts. The results of this project could inform future crop rotation programs with the goal of optimizing soil legacies for the yield of subsequent crops and provide information for the potential crop breeding programs focused on the selection of specific, desirable members of the microbial community.