A5051675842- Plant Pathogens and Fungal Diseases
- Mycorrhizal Fungi and Plant Interactions
- Yeasts and Rust Fungi Studies
- Forest Insect Ecology and Management
- Plant and soil sciences
- Plant-Microbe Interactions and Immunity
- Business, Education, Mathematics Research
- Microbial infections and disease research
- Plant responses to elevated CO2
- Science and Science Education
- History and Politics in Latin America
- Employment, Labor, and Gender Studies
- Plant Physiology and Cultivation Studies
- Bird parasitology and diseases
- Plant Pathogens and Resistance
- Plant Stress Responses and Tolerance
- Vector-borne infectious diseases
- Photosynthetic Processes and Mechanisms
- Health and Medical Education
- Organizational Management and Innovation
- Science, Technology, and Education in Latin America
- Regional Development and Innovation
- Business, Innovation, and Economy
- Horticultural and Viticultural Research
Instituto de Investigaciones Agropecuarias
2019-2025
University of Talca
2011
Sweet cherry (Prunus avium L.) has become the most important fruit crop in Chile, making country world's leading exporter, with 414,000 ton 2023. Fungal wood diseases are a major threat to this crop, novel pathogens emerging recent years (Auger et al., 2020; Grinbergs 2021). New symptoms were observed winter 2023 commercial orchard (40°19'46.1"S 72°54'22.4"W) near Río Bueno, Los Ríos Region, on varieties Sylvia, Kordia, Regina and Schneider. These included cankers along trunk main branches,...
Silverleaf caused by the basidiomycete Chondrostereum purpureum affects numerous woody species, including fruit tree crops like apple, resulting in wood necrosis and foliar silvering. There are no curative alternatives for this disease, its management is prevention methods. Therefore, aim of study was to develop a rapid diagnostic tool detection identification C. directly from tissues help distinguish pathogen other basidiomycetes that commonly found on apple. The silverleaf isolated...
Peach (Prunus persica) is an important stone fruit crop in Chile, with 7,665 h 2022. Trunk diseases symptoms, including shoot dieback, longitudinal cankers and internal dark-brown to purple discolorations cross sections were observed a commercial orchard, March of 2021. In severe cases, mostly old trees, periderm detached from the cankers, showing circinate groups black long necked perithecia. To isolate causal agent, wood samples collected 2021 October 2022, symptomatic trees (n=23)...
The European hazelnut (Corylus avellana) is an important fruit crop cultivated in Chile, with over 17,000 ha planted (46%) the Maule region, central Chile. During a routine orchard survey seasons 2020-2021 and 2021-2022, canker dieback symptoms were observed two commercial orchards of cv. Tonda Di Giffoni San Rafael (8-year-olds) Linares (15-year-olds), incidence between 10% 36%, respectively, based on external symptoms. Twenty symptomatic branches exhibiting cankers, reduced vigor, wilting,...
Silverleaf is an important fungal trunk disease of fruit crops, such as Japanese plum (Prunus salicina). It known that infection by Chondrostereum purpureum results in discolored wood, "silvered" foliage, and tree decline. However, effects on yield quality have not been assessed. Therefore, the objectives this study were to determine C. pathogenicity P. salicina physiology, yield, quality, Chile, 2019 2020. Wood samples from affected trees collected Chilean productive area. Fungi isolated...
Silverleaf is caused by the fungus Chondrostereum purpureum, which produces wood necrosis and foliar silvering in woody plants. Field observations studies apple have shown reversion of symptoms. Because plants were clones received identical agronomical management, it was hypothesized that driven endophytic microbiota. Thus, objectives this study to compare healthy, diseased, reverted with respect their physiology, microbial communities, antagonistic ability endophytes against C. defense...
Simultaneous exposition to low temperature and high light radiation cause photoinhibition of photosynthetic apparatus, affecting the productivity geographical distribution agricultural crops. In several Solanaceous species, tolerance stress in combination with has been associated some stimulation non-photochemical quenching (NPQ), which involved reorganization light-harvesting complex (LHC) proteins. To study performance Solanum lycopersicum L. S. chilense (Dunal) Reiche, investigate...
Hazelnut is among the most important nut crops in Chile, currently covering 46,000 ha. In 2023, country exported 30,000-ton. recent years incidence of plants with internal discoloration, cankers and dieback has been increasing. some cases, trees died had to be removed and, after a year, purple resupinate fruiting bodies were observed growing from stumps. To determine etiology symptoms signs, wood samples (n=318) collected since 2020, 38 symptomatic orchards Maule La Araucanía Regions,...
Grapevine is one of the most important fruit crops in Chile and trunk diseases reduce productivity, quality, longevity vineyards. A survey was conducted ancient (> 50 years) vineyards Cauquenes (35°57´14´´S 72°17´07´´W) Itata valleys (36°38´13´´S 72°30´57´´W), located central area Chile, during 2019. Trunks cordons showing dieback dark brown to black wood discoloration were collected from 200-year-old plants six cultivars: País, Moscatel, Torontel Amarilla, Carignan, Aliatica Aligote. The...
Sweet cherry (Prunus avium) is one the most important fruit crops in Chile. Its production has significantly grown recent years, reaching 228,448 tons exported 2019/2020, to 47 countries. One of main threats for this expanding crop are fungal pathogens, especially those that cause wood diseases. Cherry orchards (n=35) located central area Chile, from Curicó (34°58'58''S 71°14.366'W) Angol (37°47'42.7''S 72°42.982'W), were surveyed during 2020. Wood samples collected (n= 72) living branches...
Silverleaf is an important trunk disease of fruit crops, like Japanese plum. It known that Chondrostereum purpureum produces wood discoloration, leaves silvering and tree decline, however, the information about effects on production scarce. Therefore, objectives this study were to determine C. pathogenicity Prunus salicina physiology, yield quality, in Chile, 2019 2020. Wood samples from affected plum trees collected Chilean productive area. Fungi isolated plating sections necrosis margin...
Stem blight is a destructive woody disease of blueberry (Vaccinium corymbosum) caused by several species the family Botryosphaeriaceae. A field survey was conducted in mayor production area Chile, comprising latitudes 32°49ʹS to 40°55ʹS, determine occurrence and distribution Botryosphaeriaceae region. Together, multilocus analysis, morphological characterization, phytopathogenicity testing were used identify 51 Neofusicoccum isolates belonging N. nonquaesitum (28 strains), parvum (22...