Errors in 'maize bushy stunt phytoplasma'

[cmungall]

[Term]
id: PDO:0000172
name: maize bushy stunt phytoplasma
namespace: plant_disease_ontology
def: "A phytoplasma causal agent (PDO:0000141) that causes maize bushy stunt phytoplasma disease (PDO:0000172)." [PDO:cooperl]
xref: EOL:11810019
xref: NCBI_Taxonomy_ID:202462
is_a: PDO:0000141  ! phytoplasma causal agent

The textual definition is wrong: should be PDO:0000173 not PDO:0000172

Also there is an edge missing; see:

[cmungall]

Note: you can fix this by going to https://github.com/Planteome/plant-stress-ontology/pulls and merging my PR