21. The zoospores then enlarge into polygonal cells. 22. These structures release zoosporangia containing zoospores to other plants, the primary means of dissemination. 23. As in the related chrytrids, neocallimastigomycetes form zoospores that are posteriorly uniflagellate or polyflagellate. 24. Sporangia can infect taro leaves either directly via germ tubes or indirectly by producing zoospores . 25. Others are polycentric, meaning one zoospore gives rise to many zoosporangium connected by a rhizomycelium. 26. After initial infection in streamside populations, secondary spread via zoospores quickly infects all downstream individuals. 27. Zoospores are biflagellate asexual motile spores.28. Theses indirectly germinate and release zoospores . 29. Instead, PiCdc14 is made during the formation of asexual spores, including its biflagellated zoospores . 30. The sporangial cytoplasm divides into many minute zoospores which after their release subsequently infect new hosts.
