Component of the methylcitrate cycle that catalyzes the formation of pyruvate and succinate from 2-methylisocitrate during the metabolism of endogenous propionyl-CoA (By similarity). Plays an important role for growth and development, but also in antagonism, root colonization and induction of defense responses in plants (PubMed:24100269). (2S,3R)-3-hydroxybutane-1,2,3-tricarboxylate = pyruvate + succinate Organic acid metabolism; propanoate degradation. Abolishes growth and conidial germination when propionate is the sole carbon source. Reduces growth rate and numbers of germinating conidia on butyrate, ethanol, citrate and Tween 20. Leads also to delayed conidial pigmentation when grown on non-fermentable carbon compounds as the sole carbon source. Results in decreased tolerance to osmotic stress, shows reduced in vitro antagonism against Botryotinia fuckeliana, and delays root colonization. Belongs to the isocitrate lyase/PEP mutase superfamily. Isocitrate lyase family.