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Development of a dual-host colonization system for analysis of host preference in an arbuscular mycorrhizal fungi
- Eshghi Sahraei, Shadi (author)
- Fahad, Zainab (author)
- Manyara, David (author)
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- Rafati, Nima (author)
- Elfstrand, Malin (author)
- Rosling, Anna (author)
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- English.
- Other publication (other academic/artistic)
Abstract
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- Arbuscular mycorrhizal (AM) fungi represent a lineage of mutualistic plant symbionts, known to form biotrophic symbiosis with the vast majority vascular plant species. These ancient symbionts have been found to have low host specificity, but in nature host – fungal preferences have been observed. Over all, AM fungi increase their host fitness via providing nutrients (e.g. P, N) in exchange for photosynthetically derived carbon and energy. However, all interactions are not beneficial and negative feedback loops are important processes for maintaining plant and fungal diversity in natural ecosystems. In this study we design a dual-host growth system with F1 hybrids of sorghum and leek inoculated the hosts with the AM fungus Claroideoglomus claroideum. Host fitness and symbiotic effect following infection with AM fungus was studied using root transcriptome and 33P isotope tracing in different plant compartments. Unfortunately, very low levels of fugal transcripts were detected in sorghum roots at harvest and host specific gene expression could thus not be analysed. Both 33P isotope tracing and plant dry weight demonstrates a negative plant response to inoculation with C. claroideum for sorghum while no effect was observed for leek.
Subject headings
- NATURVETENSKAP -- Biologi -- Biologisk systematik (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Biological Systematics (hsv//eng)
- NATURVETENSKAP -- Biologi -- Ekologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Ecology (hsv//eng)
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