Kiwifruit

Diverse Pseudomonas species engage in beneficial and suppressive interactions with the kiwifruit pathogen Pseudomonas syringae pv. actinidiae across Actinidia germplasm
Diverse Pseudomonas species engage in beneficial and suppressive interactions with the kiwifruit pathogen Pseudomonas syringae pv. actinidiae across Actinidia germplasm

Through metabarcoding, targeted isolation, and whole genome sequencing, we identified diverse Pseudomonads that appear to interact with Psa across kiwifruit germplasm.

Dec 30, 2025

Individually redundant effectors are collectively required for bacterial pathogen virulence
Individually redundant effectors are collectively required for bacterial pathogen virulence

Through MELEE, a mutated effector-leveraging evolution experiment, we identified that the majority of Psa3's effectors are collectively required for virulence.

Nov 26, 2025

Genomic biosurveillance of the kiwifruit pathogen Pseudomonas syringae pv. actinidiae biovar 3 reveals adaptation to selective pressures in New Zealand orchards
Genomic biosurveillance of the kiwifruit pathogen Pseudomonas syringae pv. actinidiae biovar 3 reveals adaptation to selective pressures in New Zealand orchards

Genome biosurveillance of 500 Psa3 isolates over a 12-year period has revealed the emergence of hopF1c loss variants, mediated by the introduction of copper resistance elements into the population.

Feb 6, 2025

Identification and characterization of innate immunity in Actinidia melanandra in response to Pseudomonas syringae pv. actinidiae
Identification and characterization of innate immunity in Actinidia melanandra in response to Pseudomonas syringae pv. actinidiae

Through genome biosurveillance, effector screening, and transcriptomics, we characterised the immune response of resistant Actinidia melanandra to Psa3.

Oct 13, 2024

NbPTR1 confers resistance against Pseudomonas syringae pv. actinidiae in kiwifruit
NbPTR1 confers resistance against Pseudomonas syringae pv. actinidiae in kiwifruit

By transforming the PTR1 resistance gene from Nicotiana benthamiana into susceptible kiwifruit, we have demonstrated a potential strategy for engineering HopZ5-specific resistance against Psa3.

Jun 4, 2024

Contrasting effector profiles between bacterial colonisers of kiwifruit reveal redundant roles converging on PTI-suppression and RIN4
Contrasting effector profiles between bacterial colonisers of kiwifruit reveal redundant roles converging on PTI-suppression and RIN4

Effector knockout and knock-in assays in virulent Psa3 and avirulent Pfm identified a number of redundantly required effectors that converge on the RIN4 plant immunity hub.

Jan 1, 2023

Effector loss drives adaptation of Pseudomonas syringae pv. actinidiae biovar 3 to Actinidia arguta
Effector loss drives adaptation of Pseudomonas syringae pv. actinidiae biovar 3 to Actinidia arguta

Four avirulence effectors contribute to Psa3 recognition in resistant kiwiberry, identified through genome biosurveillance and effector knockout screening.

May 1, 2022