The fungus which causes myrtle rust (Austropuccinia psidii) arrived in New Zealand on wind currents in 2017. To date, it has been recorded infecting many ecologically, culturally and economically important species in the Myrtaceae family, such as pōhutukawa and mānuka.
Myrtle rust strikes plants at all life stages, causing dieback and potentially death.
New plant growth is particularly vulnerable to infection, and the disease is therefore most visible during spring and summer, when plants typically produce the most new tissue.
Austropuccinia psidii has spread rapidly around the world over the past 40 years and has had disastrous effects in some environments. In Australia, it has pushed at least four tree species to the brink of extinction.
Eradication of myrtle rust has never been achieved but it is vital we try to increase ecosystem resilience to the fungus and help local communities protect our taonga trees.
The Beyond Myrtle Rust research programme has four interlinking research areas: Pathogen Dynamics; Ecosystem Impacts; Novel Mitigation Techniques; Kaitiakitanga & Māori-Led Solutions.