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Abstract Detail



Symbioses: Plant, Animal, and Microbe Interactions

Bonito, Gregory [1], Uehling, Jessie [2], Pol, Natalie Vande [3], Desiro, Alessandro [4], Benning, Nils [4], Schadt, Christopher [5], Grigoriev, Igor [6], Rashid, Khalid Y. [7], Vilgalys, Rytas [8].

Early diverging plant-associated fungi and their endobacteria: assessments of function and diversity.

Mortierella belong to a clade of early-diverging terrestrial fungi that are ubiquitous in soils. Industrially, these fungi are important for their unique lipid metabolism, useful to biofuel and neutriceutical industries. Ecologically Mortierella species are key agents in soil carbon and nutrient cycling, and also for their less-apprecieated beneficial interactions in the rhizosphere of plants. Recently, endosymbiotic bacteria belonging to the Burkholderiales were discovered within the mycelium of Mortierella elongata and other early-diverging fungi. We have characterized the genome of this bacterium, which exhibits hallmarks of other Eurkaryotic-endosymbiont systems including genomic reduction (compared to facultative and free-living relatives), degradation of select metabolic pathways and interdependence between bacteria and host. Yet, the function of this bacterium in its host is not yet clear. Our over-arching research aim is two-fold: 1) Clarify the role of Mortierella and related fungi in soil and plant ecosystems, and 2) Clarify the impact of bacterial endosymbiont(s) on fungal host fitness and function.


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1 - Michigan State University, Plant Soil and Microbial Sciences, 1066 Bogue St rm 286A, East Lansing, MI, 48824, USA
2 - Duke University, Biology, Science Dr, Durham, NC, 27708, USA
3 - Michigan State University, Plant, Soil, & Microbial Sciences, 1066 Bogue St - MPS rm 3270, East Lansing, MI, 48825, USA
4 - Michigan State University, Plant Soil and Microbial Sciences, 1066 Bogue St rm 286A, Plant Soil and Microbial Sciences, East Lansing, MI, 48824, USA
5 - Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA
6 - Department of Energy, Joint Genome Institute, Oakland, CA, 94598, USA
7 - Duke University, Biology, Science Dr, Biology, Durham, NC, 27708, USA
8 - Duke University, Department Of Botany, Box 90338, Durham, NC, 27708-0338, USA

Keywords:
endobacteria
rhizosphere
Mortierella
diversity
plant microbe interactions.

Presentation Type: Oral Paper:Papers for Topics
Session: 51
Location: Salon 5/The Shaw Conference Centre
Date: Tuesday, July 28th, 2015
Time: 3:45 PM
Number: 51009
Abstract ID:1333
Candidate for Awards:None


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