Example search terms: loss of pathogenicity, Candida, Enterococcus, Magnaporthe oryzae, wheat, azole, spot blotch disease, PHI:1020, ABC1, anti-infective. Type * to browse database.

From mutant genes to phenotypes! The mission of PHI-base is to provide expertly curated molecular and biological information on genes proven to affect the outcome of pathogen-host interactions. Information is also given on the target sites of some anti-infective chemistries.

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PHIB-BLAST
Find homologs and their phenotypes

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Manual curation of the pathogen interaction literature

How to cite us:
Urban, M. et al (2025). NAR. doi: 10.1093/nar/gkae1084

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PHI spotlight



Explore PHI-base 5 our new interaction-centric database with deep annotation and effector phenotypes (summary of improvements).

This version allows the display of diverse phenotypes and many additional data curated with our community curation interface, called PHI-Canto.

PHI-base 4 will remain online until end of 2027.

The PHI-Canto community interspecies curation tool and framework description is available here: Cuzick et al, 2023, doi 10.7554/ eLife.84658.
A short overview is provided in an associated eLife digest.
Version: 4.19 release - Last revision: 09/02/2026

PHI-base is funded by the Biotechnology and Biological Sciences Research Council (BBSRC, UK) and is being developed and maintained by scientists at Rothamsted Research.
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