Ultrastructural aspects in perithecia hyphae septal pores of "Glomerella cingulata" sp. "phaseoli"

Roca-M., Maria GabrielaOngarelli, Maria das GraçasDavide, Lisete ChammaMendes-Costa, Maria Cristina

"Glomerella cingulata" (Stonem.) Spauld & Schrenck f. sp. "phaseoli", better known in its anamorphic state "Colletotrichum lindemuthianum" (Sacc. & Magn.) Briosi & Cav., is a casual agent of anthracnose in beans (Phaseolus vulgaris L.). Ultrastructural aspects of the perithecial hyphae of this pathogen were studied. The perithecia hyphae septal pores were found either plugged by a vesicular or unplugged. Some perithecia hyphae septa presented no pore. The Woronin bodies, close to the septal pores, appeared as globose structures wich were more electron dense than the occlusions plugging the septal pore.