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Abstract Detail


Symbioses: Plant, Animal, and Microbe Interactions

Joneson, Suzanne [1], Lutzoni, Francois [1].

A Fungal and Algal Perspective on Genes Upregulated in Early Lichen Development.

Our understanding of symbiotic interactions between members of the kingdoms Chloroplastida and Fungi comes primarily from studies involving vascular-plants and their fungal symbionts. To determine how broadly genetic mechanisms of symbiosis between members of the Chloroplastida and Fungi are conserved, a wider sampling within both kingdoms needs study. Although the fungal perspective from interactions with vascular-plants has been inspected from a diverse number of fungi, we do not know what to expect from fungi who are symbiotic with green algae. Based on the signaling pathways that land-plants use in response to fungal pathogens and mutualists, and based on the limited information we have regarding the presence or absence of these same signaling pathways in green algae, it is possible that green algae may respond to fungal symbionts in novel ways. We present here fungal and algal genes involved in the development of lichen symbiosis between the single-celled green-alga Asterochloris sp., and the filamentous fungus Cladonia grayi, discovered using SSH and verified with qPCR. A synthesis of the fungal and algal results will be presented in a working hypothesis of molecular mechanisms in early lichen symbiosis.


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1 - Duke University, Department of Biology, 139 Biological Sciences Building, PO Box 90338, Durham, North Carolina, 27708, USA

Keywords:
lichen
Symbiosis
Cladonia
Asterochloris.

Presentation Type: Oral Paper:Papers for Topics
Session: 59
Location: Wasatch B/Cliff Lodge - Level C
Date: Wednesday, July 29th, 2009
Time: 8:15 AM
Number: 59002
Abstract ID:267


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