6533b82ffe1ef96bd129654e
RESEARCH PRODUCT
The development of sporangia of Phytophthora infestans
C. Evola MalteseG. ConigliaroD.s. Shawsubject
biologyZoosporeSporangiumfungifood and beveragesPlant ScienceFungusbiology.organism_classificationSporeSporogenesisPhytophthora infestansBotanyGeneticsPhycomycetesEcology Evolution Behavior and SystematicsSolanaceaeBiotechnologydescription
The dynamics of sporulation and zoosporogenesis of Phytophthora infestans in a naturally infected crop of potato cv. Maris Bard and on potted plants of the same cultivar infected artificially with the same fungus are described. Development of sporangiophores and sporangia was synchronous after induction. Migration of several nuclei from the sporangiophore into the sporangium initial was followed by nuclear division, then by degeneration of a proportion of the nuclei. Sporangia then became deciduous, developed papillae and became able to release zoospores in rapid succession. When infected leaves were detached and transferred from the field to moist Petri dishes, sporulation was at first synchronous then sequential; sporangiophores were longer and lateral branches more numerous than in vivo. The number of nuclei in mature sporangia was greater in vitro than in vivo.
year | journal | country | edition | language |
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1995-10-01 | Mycological Research |