| 31. | One common characteristic of opisthokonts is that flagellate cells, such as the Zoospore morphological types ).
|
| 32. | Zoospores need water to swim through the soil, therefore infection is most likely in moist soils.
|
| 33. | During rainy periods, chlamydospores in soil may germinate in water to produce sporangia and release zoospores.
|
| 34. | As an oomycete, " P . halstedii " releases motile zoospores as secondary inoculum.
|
| 35. | "Saprolegnia " filaments ( hyphae ) are long with rounded ends, containing the zoospores.
|
| 36. | Additionally, the capillaries formed by soil particles act as a natural filter and effectively trap many zoospores.
|
| 37. | In many zoospores, the nucleus lies partially within the aggregation of ribosomes and was invariably situated laterally.
|
| 38. | In contrast, most other oomycetes do not have a vesicle and the zoospores form in the sporangia.
|
| 39. | Once the plant dies, more sporangium can form, release zoospores, and repeat the infection cycle.
|
| 40. | After primary infection, zoospores serve as a main source of inoculum throughout the rest of the season.
|
