A5018374029- Phytoplasmas and Hemiptera pathogens
- Cocoa and Sweet Potato Agronomy
- Mycorrhizal Fungi and Plant Interactions
- Insect symbiosis and bacterial influences
- Plant Pathogenic Bacteria Studies
- Remote Sensing in Agriculture
- Plant Pathogens and Fungal Diseases
- Species Distribution and Climate Change
- Leaf Properties and Growth Measurement
- Studies on Chitinases and Chitosanases
- Research on scale insects
Instituto de Agricultura Sostenible
2018-2024
Consejo Superior de Investigaciones Científicas
2018-2024
University of Córdoba
2024
Abstract Plant pathogens pose increasing threats to global food security, causing yield losses that exceed 30% in food-deficit regions. Xylella fastidiosa ( Xf ) represents the major transboundary plant pest and one of world’s most damaging terms socioeconomic impact. Spectral screening methods are critical detect non-visual symptoms early infection prevent spread. However, subtle pathogen-induced physiological alterations spectrally detectable entangled with dynamics abiotic stresses. Here,...
Pathogen introductions have led to numerous disease outbreaks in naive regions of the globe. The plant pathogen
Abstract The recent introductions of the bacterium Xylella fastidiosa ( Xf ) into Europe are linked to international plant trade. However, both how and when these entries occurred remains poorly understood. Here, we show almond scorch leaf disease, which affects ~79% trees in Majorca (Spain) was previously attributed fungal pathogens, fact triggered by introduction around 1993 subsequently spread grapevines (Pierceʼs disease). We reconstructed progression disease using broad phylogenetic...
Xylella fastidiosa (Xf) is a vascular plant pathogen native to the Americas. In 2013, it was first reported in Europe, implicated massive die-off of olive trees Apulia, Italy. This finding prompted mandatory surveys across successively revealing that bacterium already established some distant areas western Mediterranean. To date, Balearic Islands (Spain) hold major known genetic diversity Xf Europe. Since October 2016, four sequence types (ST) belonging subspecies (ST1), multiplex (ST7,...
The bacterium Xylella fastidiosa (Xf) is a plant pathogen that can block the flow of water and nutrients through xylem. Xf symptoms may be confounded with generic stress responses. Here, we assessed changes in biochemical, biophysical photosynthetic traits, inferred using models, Xf-affected almond orchards under rainfed irrigated conditions on Island Majorca (Balearic Islands, Spain). Recent research has demonstrated early detection Xf-infections by monitoring spectral associated pigments,...
An outbreak of Xylella fastidiosa subsp. multiplex sequence type ST6 was discovered in 2017 mainland Spain affecting almond trees. Two cultured strains, "ESVL" and "IVIA5901," were subjected to high throughput sequencing the draft genomes assembled. Phylogenetic analysis conclusively indicated they belong subspecies multiplex, pairwise comparisons chromosomal showed an average nucleotide identity higher than 99%. Interestingly, two strains differ for presence plasmids pXF64-Hb_ESVL...
We report the complete annotated genome sequence of plant-pathogenic bacterium Xylella fastidiosa subsp. strain IVIA5235. This was recovered from a cherry tree in Mallorca, Spain.
The plant-pathogenic bacterium Xylella fastidiosa is a major threat to agriculture and the environment worldwide. Recent devastating outbreaks in Europe highlight potential of this pathogen cause emergent diseases. X. subsp. multiplex ESVL IVIA5901 strains that belong sequence type 6 were isolated from almond orchards within outbreak area Alicante province (Spain). Both share more than 99% chromosomal sequences (average nucleotide identity), but strain harbors two plasmids (pXF64-Hb_ESVL...
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Xylella fastidiosa is a major transboundary plant pest, causing severe socioeconomic impacts. Development of preventive strategies and methods for surveillance, early detection, monitoring, accurate diagnosis X. its vectors, are keys to preventing the effects this pathogen, assist timely eradication or optimisation containment measures. This review focuses on approaches detection in Mediterranean Basin, including development climatic suitability risk maps determine areas potential...
Xylella fastidiosa is an economically important plant pathogenic bacterium of global importance associated, since 2013, with a devastating epidemic in olive trees Italy. Since then, several outbreaks this pathogen have been reported other European member countries including Spain, France, and Portugal. In the three major subspecies (subsp. fastidiosa, multiplex, pauca) detected Balearic Islands, but only multiplex mainland (Alicante). We present first complete genome sequences two Spanish...
Identification of sequence types (ST) Xylella fastidiosa based on direct MultiLocus Sequence Typing (MLST) plant DNA samples is partly efficient. In order to improve the sensitivity X. identification, we developed a nested-MLST assay extracted DNA. This method was performed largely used scheme targeting seven housekeeping gene (HKG) loci (cysG, gltT, holC, leuA, malF, nuoL, petC). Samples analyzed included 49 species and two insect (Philaenus spumarius, Neophilaenus campestris) that were...
Xylella fastidiosa is a vascular plant pathogenic bacterium native to the Americas that causing significant epidemics and economic losses in olive almonds Europe, where it quarantine pathogen. Since its first detection 2013 Italy, mandatory surveys across Europe revealed presence of also France, Spain, Portugal. Combining Oxford Nanopore Technologies Illumina sequencing data, we assembled high-quality complete genomes seven X. subsp. strains isolated from different plants United States,...
The Gram-negative bacterium Xylella fastidiosa (Xf) was originally found in the Americas, but has now been identified more than 20 countries across America, Asia, and Europe. This plant pathogen is currently listed as a priority pest Europe due to its socio-economic ecological impacts. Within three Xf subspecies fastidiosa, multiplex pauca, subsp. displays notably wider range of host plants other two subspecies. Comparative genomics may allow determination how adapts new diverse hosts...
Xylella fastidiosa ( Xf) is a vascular phytopathogenic bacterium native to the Americas, known for causing severe diseases and significant economic losses in important crops. In Europe, Xf considered quarantine pathogen. Since its first detection 2013 Italy, mandatory surveys search across Europe have revealed presence of three subspecies fastidiosa, multiplex, pauca) different outbreaks occurring France, Spain, Portugal. sandyi morus not been associated with epidemic Europe; however, has...
The Balearic Islands have emerged as a hotspot for the invasive plant pathogen Xylella fastidiosa (Xf). Since 2016, Xf subsp. and multiplex been detected causing almond leaf scorch Pierce’s disease on island of Mallorca, Spain, new sequence type (ST), ST80, pauca is infecting wild cultivated olive trees Ibiza. In addition, ST81 widespread in scrublands, causes mild, sub-lethal dieback Menorca Mallorca. A outbreak here reported municipality Sencelles centre Mallorca island. early 2024, dying...