Bacterial Species in Relation to Forest Tree Decline    (View PDF)

M. Scortichini, A. Belisario, and E. Motta

Abstract: Bacterial species colonize trees endophytically without causing apparent damage, but can act as facultative parasites by utilizing tissues altered by abioticfactors. Bacteria, especially anaerobic species, can cause wetwood perse and act as pioneer microorganisms that prepare substrates for decay fungi. Xylella fastidiosa, a xylem-limited bacterium, acts as a primary pathogen inciting leaf scorch and dieback in some trees. Bacterial penetration occurs via wounds in the aerial part of the plant or in the roots. Some bacteria can act as agents of ice formation (ice nucleation active bacteria) also promoting the entry of other organisms.

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https://doi.org/10.48044/jauf.1991.057