Soil: Do Not Disturb, Mycorrhiza in Action
Fungi are key actors in controlling primary productivity. Depending on the fungal functional group, they may promote or decrease plant productivity. It is consensual that arbuscular mycorrhizal and some endophytic fungi contribute to promote plant productivity and defense against phytopathogenic organisms, including fungi. However, there is not much information about the relation between the distinct functional groups of fungi. In this chapter, we aim at understanding the importance of arbuscular mycorrhizal fungi (Glomus intraradices) and Piriformospora indica (Serendipita indica) inoculation in the tolerance of Tomato (Solanum lycopersicum) plants to fusarium wilt.
Tomato plants grown at two nutritional levels were inoculated with Glomus intraradices and/or Piriformospora indica (Serendipita indica) and then infected with Fusarium oxysporum. Plant biomass accumulation showed that plants inoculated with Glomus intraradices and Piriformospora indica (Serendipita indica) accumulated more biomass and were more tolerant to Fusarium wilt. The analysis of the root exudates showed that fungal infection changed the composition of the root exudates and pointed out the importance of antioxidant compounds.
KeywordsArbuscular Mycorrhizal Fungus Root Exudate Chlorogenic Acid Endophytic Fungus Fusarium Wilt
Ajit Varma is thankful to Department of Science and Technology and Department of Biotechnology for partial financial funding and to DST-FIST for providing confocal microscope facility.
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