Vertical spread ofPuccinia psidiiurediniospores and development of eucalyptus rust at different heights

2010 ◽  
Vol 39 (2) ◽  
pp. 141 ◽  
Author(s):  
Edival A. V. Zauza ◽  
Michelle M. F. Couto ◽  
Vanessa M. Lana ◽  
Luiz A. Maffia ◽  
Acelino C. Alfenas
Keyword(s):  
Eucalyptus Rust

Eucalyptus rust caused by Puccinia psidii and the threat it poses to Australia

EPPO Bulletin ◽  
2006 ◽  
Vol 36 (3) ◽  
pp. 486-489 ◽  
Author(s):  
C.A. Grgurinovic ◽  
D. Walsh ◽  
F. Macbeth
Keyword(s):  
Puccinia Psidii ◽  
Eucalyptus Rust

Relationship between forest residue management and micronutrient fertilization with eucalyptus rust severity in Eucalyptus grandis plantations

2020 ◽  
Vol 475 ◽  
pp. 118443
Author(s):  
Liamara Santos Masullo ◽  
Alexandre de Vicente Ferraz ◽  
José Leonardo de Moraes Gonçalves ◽  
Luís Eduardo Aranha Camargo ◽  
Patrícia Andressa de Ávila ◽  
...  
Keyword(s):  
Eucalyptus Grandis ◽  
Residue Management ◽  
Forest Residue ◽  
Eucalyptus Rust ◽  
Rust Severity

Genetic variation for resistance to Mycosphaerella leaf disease and Eucalyptus rust on Eucalyptus globulus in Uruguay

2013 ◽  
Vol 43 (1) ◽  
pp. 97-107 ◽  
Author(s):  
Gustavo Balmelli ◽  
Sofía Simeto ◽  
Virginia Marroni ◽  
Nora Altier ◽  
Julio J. Diez
Keyword(s):  
Genetic Variation ◽  
Eucalyptus Globulus ◽  
Leaf Disease ◽  
Eucalyptus Rust ◽  
Mycosphaerella Leaf Disease

Eucalyptus rust climatic risk as affected by topography and ENSO phenomenon

2018 ◽  
Vol 48 (2) ◽  
pp. 131-141 ◽  
Author(s):  
R. S. Nóia Júnior ◽  
F. Schwerz ◽  
J. L. Safanelli ◽  
J. C. Rodrigues ◽  
P. C. Sentelhas
Keyword(s):  
Climatic Risk ◽  
Eucalyptus Rust

scholarly journals Eucalyptus Rust: A Disease with the Potential for Serious International Implications

Plant Disease ◽  
1998 ◽  
Vol 82 (7) ◽  
pp. 819-825 ◽  
Author(s):  
T. A. Coutinho ◽  
M. J. Wingfield ◽  
A. C. Alfenas ◽  
P. W. Crous
Keyword(s):  
South America ◽  
Host Range ◽  
Economic Losses ◽  
Forest Resource ◽  
Puccinia Psidii ◽  
Eucalyptus Rust ◽  
Centers Of Origin ◽  
Eucalypt Plantations ◽  
The Tropics ◽  
And Control

Eucalyptus spp. are propagated extensively as non-natives in plantations in many parts of the tropics and sub-tropics. A number of diseases result in serious losses to this economically important forest resource. Eucalyptus rust, caused by Puccinia psidii, is one such example. The economic losses due to this disease are the result of infections of seedlings, young trees, and coppice. P. psidii occurs predominately in Central and South America, but reports of a similar rust are known from other areas. Eucalyptus rust is a remarkable disease in that the pathogen is not known on eucalypts in their centers of origin. It has apparently originated on native Myrtaceae in South America and is highly infective on some Eucalyptus spp. planted there. P. psidii causes one of the most serious forestry diseases in Brazil and is considered to be the most serious threat to eucalypt plantations worldwide. Advances in eucalyptus rust research are reviewed here, with a focus on topics such as distribution, host range, pathogen specialization, symptomatology, etiology, epidemiology, and control.

scholarly journals Potential impact of the global climate changes on the spatial distribution of areas of risk for the occurrence of eucalyptus rust in Brazil

2014 ◽  
Vol 40 (2) ◽  
pp. 114-122 ◽  
Author(s):  
Willian Bucker Moraes ◽  
Waldir Cintra de Jesus Junior ◽  
Roberto Avelino Cecílio ◽  
Reginaldo Gonçalves Mafia ◽  
Wanderson Bucker Moraes ◽  
...  
Keyword(s):  
Spatial Distribution ◽  
Climate Changes ◽  
Global Climate ◽  
Integrated Management ◽  
Climate Conditions ◽  
Global Climate Changes ◽  
Eucalyptus Rust ◽  
The Future ◽  
Medium Risk ◽  
Potential Impact

Rust, caused by Puccinia psidii, is one of the most important diseases affecting eucalyptus in Brazil. This pathogen causes disease in mini-clonal garden and in young plants in the field, especially in leaves and juvenile shoots. Favorable climate conditions for infection by this pathogen in eucalyptus include temperature between 18 and 25 ºC, together with at least 6-hour leaf wetness periods, for 5 to 7 consecutive days. Considering the interaction between the environment and the pathogen, this study aimed to evaluate the potential impact of global climate changes on the spatial distribution of areas of risk for the occurrence of eucalyptus rust in Brazil. Thus, monthly maps of the areas of risk for the occurrence of this disease were elaborated, considering the current climate conditions, based on a historic series between 1961 and 1990, and the future scenarios A2 and B2, predicted by IPCC. The climate conditions were classified into three categories, according to the potential risk for the disease occurrence, considering temperature (T) and air relative humidity (RH): i) high risk (18 < T < 25 ºC and RH > 90%); ii) medium risk (18 < T < 25 ºC and RH < 90%; T< 18 or T > 25 ºC and RH > 90%); and iii) low risk (T < 18 or T > 25 ºC and RH < 90%). Data about the future climate scenarios were supplied by GCM Change Fields. In this study, the simulation model Hadley Centers for Climate Prediction and Research (HadCm3) was adopted, using the software Idrisi 32. The obtained results led to the conclusion that there will be a reduction in the area favorable to eucalyptus rust occurrence, and such a reduction will be gradual for the decades of 2020, 2050 and 2080 but more marked in scenario A2 than in B2. However, it is important to point out that extensive areas will still be favorable to the disease development, especially in the coldest months of the year, i.e., June and July. Therefore, the zoning of areas and periods of higher occurrence risk, considering the global climate changes, becomes important knowledge for the elaboration of predicting models and an alert for the integrated management of this disease.

scholarly journals Genetic Variability in Puccinia psidii Populations as Revealed by PCR-DGGE and T-RFLP Markers

Plant Disease ◽  
2014 ◽  
Vol 98 (1) ◽  
pp. 16-23 ◽  
Author(s):  
Maria Carolina Quecine ◽  
Andressa Peres Bini ◽  
Emiliana R. Romagnoli ◽  
Fernando Dini Andreote ◽  
David Henry Moon ◽  
...  
Keyword(s):  
Genetic Variability ◽  
Host Species ◽  
Host Plants ◽  
Denaturing Gradient Gel Electrophoresis ◽  
Rflp Markers ◽  
Internal Transcribed Spacer Region ◽  
Puccinia Psidii ◽  
Rdna Its ◽  
Eucalyptus Rust ◽  
Culture Independent

Eucalyptus rust caused by Puccinia psidii is responsible for losses of approximately 20% of young Eucalyptus plants, depending on the environmental conditions and the geographic location. Despite its economic importance, there are few studies describing the genetic variability in P. psidii populations that infect different host plants. In the present study, we evaluated the ribosomal DNA internal transcribed spacer region (rDNA-ITS) using polymerase chain reaction denaturing gradient gel electrophoresis and terminal restriction fragment length polymorphism to assess the genetic variability in P. psidii populations infecting different Eucalyptus spp. and hybrids, as well as guava, jabuticaba, and syzygium. These culture-independent methods were efficient in differentiating populations based on the host species from which they were collected. In general, the results from both techniques showed that the populations collected from guava, jabuticaba, and syzygium were different from and had a greater level of diversity than the Eucalyptus rust populations. The sequencing of cloned rDNA-ITS fragments confirmed that the vast majority of the profiles generated were from P. psidii. This analysis also revealed interesting single-nucleotide polymorphisms. Therefore, these culture-independent methods are suitable for the rapid assessment of genetic variability within and between populations of this biotrophic fungus on a variety of host species and could be a tool to study the evolution of this pathogen and its interactions with host plants.

Assessing vulnerable areas for Puccinia psidii (eucalyptus rust) in Australia

2012 ◽  
Vol 41 (4) ◽  
pp. 425-429 ◽  
Author(s):  
Trevor H. Booth ◽  
Tom Jovanovic
Keyword(s):  
Puccinia Psidii ◽  
Eucalyptus Rust
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