Austropuccinia psidii on the move: survey based insights to its geographical distribution, host species, impacts and management in Australia

Chasing myrtle rust in New Zealand: host range and distribution over the first year after invasion

“…The first find of this disease outside its native distribution of Central and South America was made in 1977 with outbreaks on allspice in Florida (Marlatt and Kimbrough 1979). The pathogen Berthon et al 2019;Fernandez Winzer et al 2019;Soewarto et al 2019a). While some Myrtaceae hosts are hardly affected due to resistance (Tobias et al 2015), several plant species are severely impacted by myrtle rust and a few species in Australia face extinction (Pegg et al 2017;Makinson 2018;Berthon et al 2019).…”

Exploring the overlooked diversity of plant-associated Cerrado Microfungi

“…Austropuccinia psidii became a major economic problem upon reaching Australian plantations of Eucaliptus five years later(CARNEGIE 2015), and an ecological disaster with 45 myrtaceous species in decline starting in 2018(PEGG et al 2018). The fungus is already damaging over 375 species of native Myrtaceae in Australia and showing extreme virulence towards Rhodamnia rubescens and Rhodomyrtus psidioides(FERNÁNDEZ-WINZER et al 2019). Similar problems are being revealed in New Zealand(SUTHERLAND et al 2020, TOOME-HELLER et al 2020, after the detection of the fungus in 2017 (GUY & BARRY 2017), as predicted byTeulon et al (2015).…”

“…A historical highlight was the arrival of Carlos Luiz Spegazzini (*1858- †1926) in Argentina in 1879, an Italian immigrant who became the most important Latin American mycologist, as shown by Farr (1973). He collected, described, and established the first collection of microfungi of South America, that remains as the most important today, followed by Hennings (1902ab, 1904ab, 1908 was also supplied with important collections by the Belgian Brazilian plant-pathologist Arsènne Putemans (PATRIMÔNIO BELGA NO BRASIL 2021).…”

A new, highly aggressive race of Austropuccinia psidii infects a widely planted, myrtle rust‐resistant, eucalypt genotype in Brazil

“…Austropuccinia psidii (G. Winter) Beenken, first reported as Puccinia psidii on guava ( Psidium guajava ) in southern Brazil (Winter, 1884), is an obligate biotrophic pathogen that causes myrtle rust (MR), and threatens numerous Myrtaceae species around the world (Beresford et al, 2018; Carnegie et al, 2016; Pegg et al, 2014, 2017; Winzer et al, 2019). After the MR pathogen was first described in South America, it was found in North America and the Caribbean (Coutinho et al, 1998; MacLachlan, 1938; Marlatt & Kimbrough, 1979), and it has subsequently been found in other regions, including Asia (Kawanishi et al, 2009; McTaggart et al, 2016; du Plessis et al, 2017; Zhuang & Wei, 2011), Africa (Roux et al, 2013), and Oceania (Beresford et al, 2018; Carnegie et al, 2010; Fernandez Winzer et al, 2019; Uchida et al, 2006). As A. psidii appeared in new global regions, its known host range has continued to expand, and it is now known to infect a plethora of host species in the Myrtaceae (Carnegie & Giblin, 2020; Pegg et al, 2014, 2017; Stewart et al, 2018).…”