A5081541750- Plant Pathogens and Resistance
- Plant Pathogens and Fungal Diseases
- Plant Disease Resistance and Genetics
- Yeasts and Rust Fungi Studies
- Mycorrhizal Fungi and Plant Interactions
- Diet and metabolism studies
- Forest Insect Ecology and Management
- Agriculture, Plant Science, Crop Management
- Pain Mechanisms and Treatments
- Neuroscience and Neuropharmacology Research
- Pharmacogenetics and Drug Metabolism
- Mediterranean and Iberian flora and fauna
- Pain Management and Opioid Use
- Botany and Plant Ecology Studies
- Pharmacological Effects and Toxicity Studies
- Neuropeptides and Animal Physiology
- Fungal Biology and Applications
- Plant and soil sciences
- Infectious Diseases and Mycology
- Inorganic and Organometallic Chemistry
- Plant Disease Management Techniques
- Entomopathogenic Microorganisms in Pest Control
- Water Resource Management and Quality
- Plant pathogens and resistance mechanisms
- Plant Ecology and Soil Science
University of Córdoba
2010-2023
South Texas Veterans Health Care System
2021-2023
The University of Texas Health Science Center at San Antonio
2021
Universitat Politècnica de València
2010
Instituto de Biología Molecular y Celular de Plantas
2010
Centro de Investigaciones Biológicas Margarita Salas
1976-1993
Universidade de Santiago de Compostela
1984-1989
University of Iowa
1975-1977
University of Chile
1968-1969
Summary An analysis of incidence Phytophthora spp. in 732 European nurseries producing forest transplants, larger specimen trees, landscape plants and ornamentals, plus 2525 areas which trees shrubs were planted, is presented based on work conducted by 38 research groups 23 countries between 1972 2013. Forty‐nine taxa recorded 670 (91.5%); within these nurseries, 1614 1992 nursery stands (81.0%) infested, although most affected appeared healthy. In plantings, 56 recovered from 1667 tested...
• Soil-borne pathogens are a key component of the belowground community because significance their ecological and socio-economic impacts. However, very little is known about complexity distribution patterns in natural systems. Here, we explored patterns, causes consequences spatial variability pathogen abundance Mediterranean forests affected by oak decline. We used spatially explicit neighborhood models to predict soil-borne species (Phytophthora cinnamomi, Pythium spiculum spp.) as...
Oak decline that was affecting three holm oak sites in the province of Huelva (south‐western Spain) studied during 1998–1999. The syndromes dieback and sudden death have been observed and, both cases, foliar symptoms were associated with root rot. Characterization fungal isolates from necrotic roots led us to identify Phytophthora cinnamomi A2 as consistently disease. optimum growth temperatures these very high (30°C). Inoculation tests under controlled conditions demonstrated pathogenicity...
Abstract Pythium spiculum , a recently described new taxon, has been frequently isolated from declining Quercus rotundifolia and Q. suber roots rhizosphere since 2003 in southern Iberia. In soils of forests this species was found as Phytophthora cinnamomi which, until now, the only oomycete root rot pathogen region. Inoculation tests conducted on young plants showed that Py. is an aggressive pathogen, although producing severities symptoms significantly lower than those P. . This could play...
Although root disease caused by Phytophthora cinnamomi is considered to be the most frequent and damaging associated with Quercus spp. decline in southwestern Spain, cankers commonly are observed on branches of declining Mediterranean this region. In surveys carried out eight forests, strips necrotic inner bark were common diseased branches. Botryosphaeria stevensii, B. dothidea, Diplodia sarmentorum consistently isolated from these Isolates all three species when inoculated onto excised...
Summary Potassium phosphite ( PP ) formulations registered as fertilizers are now prohibited in Spain. Therefore, we evaluated the systemic fungicide fosetyl‐aluminium (fos‐al) comparison with , against root rot caused by Phytophthora cinnamomi Quercus woodlands. The direct effect of both fungicides was vitro on P. mycelial growth. Protection cork and holm oak infection also planta . Metalaxyl included experiments for purposes. At 100 μg/ mL totally inhibited colony radial growth, 75%...
Phytophthora cinnamomi causes a highly destructive root rot that seriously affects oak trees in semi-natural woodlands known as “ dehesa s”. Biofumigation with Brassica spp. is promising tool for disease management. We demonstrated ground seeds from B. carinata and juncea can inhibit mycelial growth decrease chlamydospore viability of P. soil. In contrast, napus seedmeals were ineffective. Reduction necrosis Lupinus plants was also achieved when soils biofumigated or seedmeals. Seedmeal...
Summary Within a research project on quality of plants for forestation agricultural lands, we studied the aetiology late seedling rot affecting holm oak ( Quercus ilex ssp. ballota ) in two forest nurseries southern Spain. Major disease symptoms were foliage wilting and necrosis feeder roots. Phytophthora cinnamomi , cryptogea drechsleri isolated from necrotic roots oaks. Selected isolates three species pathogenic to suber seedlings artificial inoculations. Soil flooding conditions essential...
Gypsum habitats represent a stressful environment for plants, combining aridity, limited nutrients and salt toxicity in the soil. Si nce different abiotic stress conditions cause oxida tive by generation of 'reactive oxygen species' ( ROS), activation antioxidant systems is considered as one general mechanisms resp onse to plants. The levels total phenolic compounds flavonoids, well-known antioxidants, were determined several species from gypsum area Valencia, SE Spain, t o study their...
Pythium spiculum sp. nov. was isolated from soil samples taken in a vineyard the Burgundian region of France and different locations Spain Portugal. The oomycete has spiny oogonia does not sporulate readily. It resembles mamillatum Meurs, but its own distinguishing characteristics. also exhibits sickle-shaped as well spherical appressoria which at times are associated with sex organs like those found abappressorium Paulitz contiguanum Paul. Sequencing internal transcribed spacer nuclear...
Summary Conservation bias towards flagship species sometimes threatens other of chief concern. Long‐term studies potential harm by favoured on sensitive species, though seldom adopted, are required to fairly evaluate the suitability management and restoration efforts. We illustrate detrimental outcomes conservation biased birds investigating long‐term (1963–2009) impact a large waterbird colony (up 13 000 pairs) remnant cork oak Quercus suber population at World Biosphere Reserve in...
In Spain, Quercus open woodlands are animal ranching systems of organic production seriously threatened by the exotic pathogen Phytophthora cinnamomi . The root disease it causes kills thousands oaks annually. Effective management needs to integrate different techniques, and use a resistance inducer such as fosetyl‐Al can play key role, because potassium phosphite is prohibited in Spain. woodland where recently arrived, 60 holm three defoliation classes (asymptomatic, slight moderate...
In a survey of Phytophthora species associated with forest decline in Spain, Poland and France, we found three Pythium isolates, which have been characterized internal transcribed spacer rRNA gene sequences classical morphological descriptors for spp. These isolates showed unique sequences, different enough from those any described to justify new status. distinct failed produce sex organs an entirely asexual reproduction were represent the name sterilum is proposed. This paper describes...
Wild olive ( Olea europaea subsp. var. sylvestris ) is an important component of Mediterranean forests and a key genetic source for improvement programmes. Since 2009, severe decline caused by Phytophthora cryptogea P. megasperma has been detected in protected wild forest high ecological value (Dehesa de Abajo, Seville, Spain). In this natural forest, sampling roots soil was carried out on 25 olives with symptoms 2014 2015. Apart from the already known A1 , third species consistently...
Summary Abies pinsapo , a fir endemic to small area in southernmost Spain, is frequently attacked natural stands by Heterobasidion root rot. To identify the species causing disease, pure cultures of fungus were isolated from symptomatic trees five localities Sierra de las Nieves Natural Park and identified pairing tests. In addition, genets two A. . All specimens collected belonged abietinum The largest genet found was 57 m long, had colonized 10 trees. large size main implied that H. spread...