The goal of this mini review is to summarize the relevant contribution of some
beneficial traits to the behavior of the species Pseudomonas chlororaphis, and
using that information, to give a practical point of view using the model biocontrol
strain P. chlororaphis PCL1606 (PcPCL1606). Among the group of plant-beneficial
rhizobacteria, P. chlororaphis has emerged as a plant- and soil-related bacterium that
is mainly known because of its biological control of phytopathogenic fungi. Many traits
have been reported to be crucial during the multitrophic interaction involving the plant,
the fungal pathogen and the soil environment. To explore the different biocontrol-related
traits, the biocontrol rhizobacterium PcPCL1606 has been used as a model in recent
studies. This bacterium is antagonistic to many phytopathogenic fungi and displays
effective biocontrol against fungal phytopathogens. Antagonistic and biocontrol activities
are directly related to the production of the compound 2-hexyl, 5-propyl resorcinol
(HPR), despite the production of other antifungal compounds. Furthermore, PcPCL1606
has displayed additional traits regarding its fitness in soil and plant root environments
such as soil survival, efficient plant root colonization, cell-to-cell interaction or promotion
of plant growth.
