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“Development and function of AM symbiosis” - Maria Harrison

Friday, December 6, 2019 at 12:20pm

Plant Science Building, 404

Maria Harrison
Boyce Thompson Institute, Cornell University

Research Overview: Most vascular flowering plants are able to form symbiotic associations with arbuscular mycorrhizal (AM) fungi. These associations, named ‘arbuscular mycorrhizas’, develop in the roots, where the fungus colonizes the cortex to access carbon supplied by the plant. The fungal contribution to the symbiosis includes the transfer of mineral nutrients, particularly phosphorus, from the soil to the plant. In many soils, phosphate exists at levels that are limiting for plant growth. Consequently, additional phosphate supplied via AM fungi can have a significant impact on plant development, and this symbiosis influences the structure of plant communities in ecosystems worldwide.

The long-term goals of our research are to understand the mechanisms underlying development of the AM symbiosis and phosphate transfer between the symbionts. A model legume, Medicago truncatula, and arbuscular mycorrhizal fungi, Glomus versiforme, Glomus intraradices and Gigaspora gigantea are used for these analyses. Currently, a combination of molecular, cell biology, genetic and genomics approaches are being used to obtain insights into development of the symbiosis, communication between the plant and fungal symbionts, and symbiotic phosphate transport.

 

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Event Type

Seminar

Departments

Plant Biology

Tags

CALScomm, plant biology, sips

Website

https://sips.cals.cornell.edu/

Hashtag

#sipsseminar

Contact E-Mail

tln2@cornell.edu

Contact Name

Tara Reed

Contact Phone

6072552131

Speaker

Maria Harrison

Speaker Affiliation

Boyce Thompson Institute, Cornell University

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