Thesis
Soil microbial community siderophore production and soil health in 'Concord' vineyards
Washington State University
Master of Science (MS), Washington State University
07/2019
DOI:
https://doi.org/10.7273/000004125
Handle:
https://hdl.handle.net/2376/125230
Abstract
This research examines microbial activities in the rooting zone soil of 'Concord' (Vitis labruscana Bailey) vineyards in central Washington. Our aim was to understand how cover crops could impact microbial activities, enhance iron (Fe) bioavailability to the grapevines, and increase overall soil health. A high throughput, cost-effective method for quantifying siderophore production was developed and applied to characterize the siderophore-producing members of the 'Concord' root zone community. Ten distinct pseudomonad genomes, forming two different taxonomic and functionally unique clades with potential impact on vine chlorosis were described. Soil microbial enzyme activities were also monitored in soil samples from vine rows and under the cover crops, taken at different physiological stages (bloom and veraison). The soil and plant responses were significantly different in both locations and physiological stages. Overall, cover cropping enhanced the vineyard soil health and increased microbial activity, but the effects were concentrated directly under the cover crop and did not significantly impact grapevine chlorosis. Future work should target amendments and management options specifically in the rooting zone of the grapevines, and attempt to monitor over a longer period of time.
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Details
- Title
- Soil microbial community siderophore production and soil health in 'Concord' vineyards
- Creators
- ANJUMAN ARA ISLAM - Washington State University, Plant Pathology, Department of
- Contributors
- Tarah S Sullivan (Advisor) - Washington State University, Crop and Soil Sciences, Department of
- Awarding Institution
- Washington State University
- Academic Unit
- Crop and Soil Sciences, Department of
- Theses and Dissertations
- Master of Science (MS), Washington State University
- Publisher
- Washington State University
- Identifiers
- 99900890782301842
- Language
- English
- Resource Type
- Thesis