Plant viruses have no resting stage and are transmitted through a continuous infection chain.
- The plant bacteria also do not produce resting spores or similar structures.
- They continuously live in their active parasitic stage in the living host or as active saprophytes on dead plant debris
Nematodes: They survive in the form of active parasitic phase on a living host and also survive through dormant structures, i.e., eggs, cysts, galls, formed in host tissues.
Phanerogamic parasites: They survive in dormant state for many years through seeds.
Ex; Seeds of Orobanchae survive in soil for more than 7 years.
Among plant pathogens, fungi are the only organisms that produce spores, analogous to eggs of nematodes, and other resting structures for their inactive survival.
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