Plant genes involved in arbuscular mycorrhiza formation and functioning

From Production to Application of Arbuscular Mycorrhizal Fungi in Agricultural Systems: Requirements and Needs

“…The approach taken by most researchers focused on the identification of plant genes controlling essential steps in the symbiosis between host plant and AM fungus (Balestrini and Lanfranco 2006). A number of the mycorrhiza-regulated genes have been identified by this approach, but genes involved in the mycorrhization process are still unknown (Gollotte et al 2002;Grunwald et al 2004). …”

“…As in many biological processes, numerous genes could be involved in the symbiosis between host plant and mycorrhizal fungus. Experiments with different mycorrhiza-defective plant mutants indicate that root colonization of AM fungi is controlled by a large number of genes (Gollotte et al 2002). The approach taken by most researchers focused on the identification of plant genes controlling essential steps in the symbiosis between host plant and AM fungus (Balestrini and Lanfranco 2006).…”

Interactions of Arbuscular Mycorrhiza and Nitrogen-Fixing Symbiosis in Sustainable Agriculture

“…Further, as reviewed by Gollote et al (2002), work with a number of legume mutants, which are altered in their interaction with Rhizobium, indicated 12 symbiosis-related genes that possessed pleiotropic effects on both nodulation and AM formation. The expression of defence-related genes is also enhanced in Myc -model legume mutants inoculated with either AM fungi or rhizobia (Gollotte et al, 2002;Werner et al, 2002). In particular, an accumulation of salicylic acid was described in the roots of these mutants when inoculated with either of their microbial symbionts (Blilou et al, 1999;Ruiz-Lozano et al, 1999a).…”

“…It has been suggested that both AM formation and nodulation share a common signaltransduction pathway (Hirsch and Kapulnik, 1998). Current advances in this area have been recently reviewed (Gollotte et al, 2002).…”

“…The use of mycorrhiza-defective legume mutants (Myc -) has allowed critical advances in the understanding of common cellular and genetic programs for the legume-root symbioses (Gollotte et al, 2002). Duc et al (1989) first showed that the expression of the Myc -character in model legumes was associated with that of the Nod -character (non-nodulating plants), suggesting that the establishment of both types of symbiosis depends on the expression of some common gene(s) through which the plant controls early steps in the infection processes.…”