Phoma exigua

Brebaum SN, Borland GJ, First Report of Phoma herbarum and Phoma exigua as Pathogens of DandeHon in Southern Ontario, Plant Dis%5-.200, 1999. 

Phoma exigua Desm. var. exigua Prill. Delacre + ... 

Cytochalasins.—Previous results have shown that the cytochalasins, e.g. cyto-chalasin B (126), are partially polyketide in origin cf. Vol. 7, p. 29 Vol. 6, p. 44). It has now been shown that [2-2H3,2-13C]acetic acid is incorporated into cyto-chalasin B (126) in Phoma exigua and into cytochalasin D in Zygosporium masonii. Labelling of the expected sites by 13C was observed for both metabolites, but, in keeping with results on other acetate metabolites, most of the deuterium was lost, being retained only in the polyketide chain at C-l 1, which is part of the starter acetate unit.102... 

Evidente A, Cimmino A, Andolfi A, Berestetskiy A, Motta A (2011) Phomachalasins A-D, 26-oxa[16] and [15]Cytochalasans Produced by Phoma exigua var. exigua, a Potential Mycoherbicide for Cirsium arvense Bioconbol. Tetrahedron 67 1557... 

P. erythroseptica Altemaria altemata or,4. solani Streptomyces scabiei Spongospora subterranea Phoma exigua ai.fbveata Pythium spp. 

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