Phytohormones in plant root-Piriformospora indica mutualism

Autor: Schäfer, Patrick, Pfiffi, Stefanie, Voll, Lars M., Zajic, Doreen, Chandler, Peter M., Waller, Frank, Scholz, Uwe, Pons-Kühnemann, Jörn, Sonnewald, Sophia, Sonnewald, Uwe, Kogel, Karl-Heinz
Zdroj: Plant Signaling & Behavior; July 2009, Vol. 4 Issue: 7 p669-671, 3p
Abstrakt: Piriformospora indicais a mutualistic root-colonising basidiomycete that tranfers various benefits to colonized host plants including growth promotion, yield increases as well as abiotic and biotic stress tolerance. The fungus is characterized by a broad host spectrum encompassing various monocots and dicots.1,2Our recent microarray-based studies indicate a general plant defense suppression by P. indica and significant changes in the GA biosynthesis pathway.3Furthermore, barley plants impaired in GA synthesis and perception showed a significant reduction in mutualistic colonization, which was associated with an elevated expression of defense-related genes. Here, we discuss the importance of plant hormones for compatibility in plant root-P. indicaassociations. Our data might provide a first explanation for the colonization success of the fungus in a wide range of higher plants.
Databáze: Supplemental Index