Blanca B Landa

Blanca B Landa
Spanish National Research Council | CSIC · Institute for Sustainable Agriculture (IAS)

Dr. Agronomy-Plant Pathologist

About

281
Publications
81,547
Reads
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6,734
Citations
Citations since 2016
100 Research Items
4635 Citations
20162017201820192020202120220200400600800
20162017201820192020202120220200400600800
20162017201820192020202120220200400600800
20162017201820192020202120220200400600800
Additional affiliations
July 2007 - present
Spanish National Research Council
Position
  • Researcher
January 2002 - November 2006
University of Cordoba (Spain)
Position
  • Researcher "Program Ramon y Cajal"

Publications

Publications (281)
Article
Full-text available
Early, specific and accurate in planta detection and quantification of Verticillium dahliae are essential to prevent the spread of Verticillium wilt in olive using certified pathogen-free planting material and development of resistance. We comparatively assessed the accuracy, specificity and efficiency of eight real-time quantitative PCR (qPCR) pro...
Article
Full-text available
Fusarium wilt caused by Fusarium oxysporum f. sp. ciceris, a main threat to global chickpea production, is managed mainly by resistant cultivars whose efficiency is curtailed by Fusarium oxysporum f. sp. ciceris races. We characterized compatible and incompatible interactions by assessing the spatial-temporal pattern of infection and colonization o...
Article
Full-text available
Populations of Sclerotium rolfsii, the causal organism of Sclerotium root-rot on a wide range of hosts, can be placed into mycelial compatibility groups (MCGs). In this study, we evaluated three different molecular approaches to unequivocally identify each of 12 previously identified MCGs. These included restriction fragment length polymorphism pat...
Article
Full-text available
High-throughput sequencing (HTS) technologies have the potential to become one of the most significant advances in molecular diagnostics. Their use by researchers to detect and characterize plant pathogens and pests has been growing steadily for more than a decade and they are now envisioned as a routine diagnostic test to be deployed by plant pest...
Article
Full-text available
The bacterium Xylella fastidiosa (Xf) is a plant pathogen that can block the flow of water and nutrients through the xylem. Xf symptoms may be confounded with generic water stress responses. Here, we assessed changes in biochemical, biophysical and photosynthetic traits, inferred using biophysical models, in Xf-affected almond orchards under rainfe...
Article
Full-text available
Entomopathogenic nematodes (EPNs) are biological control agents distributed worldwide in natural and agricultural soils. Recent evidence supports the hypothesis that stable rhizospheres of perennial crops can favor the occurrence of EPNs. However, different agricultural management practices can modulate their natural distribution in agroecosystems,...
Article
Full-text available
Over the last few decades, a growing incidence of Banana Wilt (BW) has been detected in the banana-producing areas of the central zone of Venezuela. This disease is thought to be caused by a fungal–bacterial complex, coupled with the influence of specific soil properties. However, until now, there was no consensus on the soil characteristics associ...
Article
Full-text available
p>High-throughput sequencing (HTS) is a powerful tool that enables the simultaneous detection and potential identification of any organisms present in a sample. The growing interest in the application of HTS technologies for routine diagnostics in plant health laboratories is triggering the development of guidelines on how to prepare laboratories f...
Article
Full-text available
Xylella fastidiosa represents a major threat to important crops worldwide including almond, citrus, grapevine, and olives. Nowadays, there are no efficient control measures for X. fastidiosa, and the use of preventive measures and host resistance represent the most practical disease management strategies. Research on vessel-associated microorganism...
Article
Full-text available
Xylella fastidiosa (Xf) is a phytopathogenic bacterium with a repertoire of self-replicating genetic elements, including plasmids, pathogenicity islands, and prophages. These elements provide potential avenues for horizontal gene transfer both within and between species and have the ability to confer new virulence traits, including the ability to c...
Article
Full-text available
Gluten proteins are responsible for the wheat breadmaking quality. However, gluten is also related to human pathologies for which the only treatment is a gluten-free diet (GFD). GFD has gained popularity among individuals who want to reduce their gluten intake. Tritordeum is a cereal species that originated after crossing durum wheat with wild barl...
Article
Full-text available
Understanding the unique and unexplored microbial environment of xylem sap is starting to be of relevant importance for plant health, as it could include microbes that may protect plants against xylem-limited pathogens, such as Verticillium dahliae and Xylella fastidiosa. In this study, we evaluated the effects that the method for extracting the xy...
Article
Verticillium dahliae was isolated from Noogoora burr (Xanthium occidentale) seeds collected from mature asymptomatic plants in 2017 growing along the riverbank at Condobolin, NSW. V. dahliae was isolated from seeds by transferring surfaced-disinfested seed components onto 25% Potato Dextrose Agar (PDA) plus Novobiocin. Morphological and molecular a...
Article
Full-text available
Xylella fastidiosa is the causal agent of important crop diseases and is transmitted by xylem sap‐feeding insects. The bacterium colonizes xylem vessels and can persist with a commensal or pathogen lifestyle in more than 500 plant species. In the past decade, reports of X. fastidiosa across the globe have dramatically increased its known occurrence...
Article
Full-text available
Soil morphological properties described in the field, such as texture, consistence or structure, provide a valuable tool for the evaluation of soil productivity potential. In this study, we developed a regression model between the soil morphological variables of banana plantations and a crop Productivity Index (PI) previously developed for the same...
Article
Full-text available
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 the world’s most damaging pathogens in terms of socioeconomic impact. Spectral screening methods are critical to detect non-visual symptoms...
Article
Globally, olive (Olea europaea L.) productivity is threatened by plant pathogens, particularly the fungus Verticillium dahliae (Vd) and the bacterium Xylella fastidiosa (Xf). Infections by these pathogens restrict water and nutrient flow through xylem, producing a similar set of symptoms that can also be confounded with water stress. Conventional i...
Article
Full-text available
Xylella fastidiosa is a gram-negative plant pathogenic bacterium with wide geographical distribution and host range. X. fastidiosa strains are separated into genetically distinct subspecies, and further categorized into sequence types (ST). Genetic characterization of X. fastidiosa strains infecting blueberry has revealed that strains of subspecies...
Article
Full-text available
Among the agricultural practices promoted by the Common Agricultural Policy to increase soil functions, the use of cover crops is a recommended tool to improve the sustainability of Mediterranean woody crops such as olive orchards. However, there is a broad range of cover crop typologies in relation to its implementation, control and species compos...
Article
A R T I C L E I N F O Keywords: Hyperspectral Thermal Epidemic spread model Radiative transfer model SWIR domain Xylella fastidiosa Nitrogen Machine learning A B S T R A C T The early detection of Xylella fastidiosa (Xf) infections is critical to the management of this dangerous plan pathogen across the world. Recent studies with remote sensing (RS...
Preprint
Among the agricultural practices promoted by the Common Agricultural Policy to increase soil functions, the use of cover crops is a recommended tool to improve the sustainability of Mediter-ranean woody crops such as olive orchards. However, there is a broad range of cover crop ty-pologies in relation to its implementation, control and species comp...
Article
Full-text available
Vascular pathogens are the causal agents of main diseases threatening the health and growth of olive crops worldwide. The use of endophytic microorganisms represents a challenging and promising strategy for management of vascular diseases in olive. Although current research has been focused on analyzing the structure and diversity of the endophytic...
Article
Full-text available
Bananas and plantains (Musa spp.) are among the main staple of millions of people in the world. Among the main Musaceae diseases that may limit its productivity, Fusarium wilt (FW), caused by Fusarium oxysporum f. sp. cubense (Foc), has been threatening the banana industry for many years, with devastating effects on the economy of many tropical cou...
Article
In 2017, Xylella fastidiosa, a quarantine plant pathogenic bacterium in Europe, was detected in almond trees associated to leaf scorch symptoms in Alicante, a Mediterranean area in southeastern mainland Spain. The bacterium was detected by serological and molecular techniques, isolated in axenic culture from diseased almond trees, and identified as...
Conference Paper
Full-text available
The emergence of Xylella fastidiosa in Europe revealed the occurrence of bacterial strains belonging to different subspecies and unraveled the vulnerability of some typical European plant species. Among these, olive was found infected in different European outbreaks, with infections caused by strains harboring different sequence types (STs) and bel...
Conference Paper
Full-text available
Remote sensing efforts made as part of European initiatives via POnTE, XF-ACTORS and the JRC, as well as through regional programs, have focused, among others, on the development of algorithms for the early detection of Xylella fastidiosa (Xf)-induced symptoms. Airborne campaigns carried out between 2016 and 2019 collected high-resolution hyperspec...
Article
Full-text available
Next-generation sequencing has revolutionized our ability to investigate the microbiota composition of diverse and complex environments. However, a number of factors can affect the accuracy of microbial community assessment, such as the DNA extraction method, the hypervariable region of 16S rRNA gene targeted, or the PCR primers used for amplificat...
Preprint
Vascular pathogens are the causal agents of main diseases threatening the health and growth of olive crops worldwide. The use of endophytic microorganisms represents a challenging and promising strategy for management of vascular diseases in olive. Although current research has been focused on analyzing the structure and diversity of the endophytic...
Article
Full-text available
Xylella fastidiosa (Xf) is a vascular plant pathogen native to the Americas. In 2013, it was first reported in Europe, implicated in a massive die-off of olive trees in Apulia, Italy. This finding prompted mandatory surveys across Europe, successively revealing that the bacterium was already established in some distant areas of the western Mediterr...
Article
Full-text available
Host resistance is the most practical, long-term, and economically efficient disease control measure for Verticillium wilt in olive caused by the xylem-invading fungus Verticillium dahliae (Vd), and it is at the core of the integrated disease management. Plant’s microbiome at the site of infection may have an influence on the host reaction to patho...
Article
The introduction of temporary grassland into an annual crop rotation is recognized to improve soil ecosystem services, and resulting legacies can be beneficial for the following crops. In this context, the aim of the present study was to evaluate legacy effects of introducing temporary grassland into an annual crop rotation on five ecosystem servic...
Article
Full-text available
Disease outbreaks caused by introduced Phytophthora species have been increasing in British forests and woodlands in recent years. A better knowledge of the Phytophthora communities already present in the UK is of great importance when developing management and mitigation strategies for these diseases. To do this, soils were sampled in “disturbed”...
Preprint
Full-text available
Next Generation Sequencing has revolutionized our ability to investigate the microbiota composition of diverse and complex environments. However, a number of factors can affect the accuracy of microbial community assessment, such as the DNA extraction method, the hypervariable region of 16S rRNA gene targeted or the PCR primers used for amplificati...
Article
Full-text available
Russian olive, also known as, Persian olive or oleaster (Elaeagnus angustifolia L.) is a species in the Elaeagnaceae family native to western and central Asia. In some orchards in Iran, intercropping Russian olive or Prunus trees with vegetables is a common practice. In 2018, about 130 ha of E. angustifolia orchards in Shahrood, Semnan Province, Ir...
Article
BACKGROUND The ingestion of wheat and other cereals are related to several gut disorders. The specific components responsible for NCWS may include gluten and other compounds. Tritordeum is a new cereal derived from crossing durum wheat with a wild barley species, which differs from bread wheat in its gluten composition. In the present work, we exam...
Preprint
Full-text available
Host resistance is the most practical, long-term and economically efficient disease control measure for Verticillium wilt in olive caused by the xylem-invading fungus Verticillium dahliae ( Vd ), and it is at the core of the integrated disease management. Plant’s microbiome at the site of infection may have an influence on the host reaction to path...
Article
Full-text available
The recent introductions of the bacterium Xylella fastidiosa (Xf) into Europe are linked to the international plant trade. However, both how and when these entries occurred remains poorly understood. Here, we show how almond scorch leaf disease, which affects~79% of almond trees in Majorca (Spain) and was previously attributed to fungal pathogens,...
Article
Full-text available
To identify the main edaphic variables most correlated to banana productivity in Venezuela and explore the development of an empirical correlation model to predict this productivity based on soil characteristics. Six agricultural fields located in two of the main banana production areas of Venezuela were selected. The experimental sites were in lar...
Article
Full-text available
To identify the main edaphic variables most correlated to banana productivity in Venezuela and explore the development of an empirical correlation model to predict this productivity based on soil characteristics. Six agricultural fields located in two of the main banana production areas of Venezuela were selected. The experimental sites were in lar...
Article
Full-text available
Identification of sequence types (ST) of Xylella fastidiosa based on direct MultiLocus Sequence Typing (MLST) of plant DNA samples is partly efficient. In order to improve the sensitivity of X. fastidiosa identification, we developed a direct nested-MLST assay on plant extracted DNA. This method was performed based on a largely used scheme targetin...
Preprint
Different sequence types (ST) of Xylella fastidiosa were already identified in France and Spain based on direct MultiLocus Sequence Typing (MLST) of plant DNA samples. However, direct typing of plant DNA is partly efficient. In order to improve the sensitivity of X. fastidiosa identification, we developed a direct nested-MLST assay on plant extract...
Conference Paper
Traditionally, soil quality has been assessed through physical, chemical and biological properties without paying attention to soil biota and the different associated ecosystem services provided (Tyler, 2019). To fill that gap, the european BiodivERsA "SoilMan" project (Ecosystem services driven by the diversity of soil biota - understanding and ma...
Technical Report
Full-text available
19 experts from the five main EU olive producing countries were brought together in a Focus Group to explore more sustainable farming practices, including the use of non-chemical pesticides to tackle the main diseases and pests threatening EU olive production. The Focus Group worked together for around 12 months and met face-to-face twice to carry...
Article
Full-text available
Xylella fastidiosa is an economically important plant pathogenic bacterium of global importance associated, since 2013, with a devastating epidemic in olive trees in Italy. Since then, several outbreaks of this pathogen have been reported in other EU member countries including Spain, France and Portugal. In Spain, the three major subspecies (subsp....
Article
Xylella fastidiosa is an economically important plant-pathogenic bacterium that has emerged as a pathogen of global importance associated with a devastating epidemic in olive trees in Italy associated with X. fastidiosa subspecies pauca and other outbreaks in Europe, such as X. fastidiosa subspecies fastidiosa and X. fastidiosa subspecies multiplex...
Article
Full-text available
Microbial endophytes are well known to protect host plants against pathogens, thus representing a promising strategy for the control of xylem-colonizing pathogens. To date, the vast majority of microbial communities inhabiting the olive xylem are unknown; therefore, this work pursues the characterization of the xylem-limited microbiome and determin...
Article
Xylella fastidiosa (Xf), the causal agent of Pierce's Disease (PD), has long been considered a major threat to the prosperous European viticulture. In May of 2017, PD was officially detected on a grapevine in Mallorca. To better understand the epidemiology of the first established outbreak of PD in Europe, we assessed the disease incidence and seve...
Article
Full-text available
Verticillium wilt, caused by the defoliating pathotype of Verticillium dahliae, is the most devastating soil-borne fungal disease of olive trees, and leads to low yields and high rates of tree mortality in highly susceptible cultivars. The disease is widely distributed throughout the Mediterranean olive-growing region and is one of the major limiti...
Poster
Full-text available
The expected increase in average temperatures and the consequent decrease in rainfall in different parts of the country might have serious consequences for man, significantly decreasing the production of basic foods, and encouraging the emergence of food crises. The aim of this study was to describe the possible impact of climate change on banana-g...
Article
Scope Dysbiosis of gut microbiota is involved in metabolic syndrome (MetS) development, which has a different incidence between men (M) and women (W). We explored the differences in gut microbiota in MetS patients according to gender, and evaluated whether consuming two healthy diets, Mediterranean (MED) and low‐fat (LF), may, over time, differenti...
Article
An outbreak of Xylella fastidiosa subsp. multiplex sequence type ST6 was discovered in 2017 in mainland Spain affecting almond trees. Two cultured almond strains, "ESVL" and "IVIA5901," were subjected to high throughput sequencing and the draft genomes assembled. Phylogenetic analysis conclusively indicated they belong to the subspecies multiplex,...
Article
Full-text available
The study evaluated the symptoms, acceptance, and digestibility of bread made from transgenic low-gliadin wheat, in comparison with gluten free bread, in Non-coeliac gluten sensitivity (NCGS) patients, considering clinical/sensory parameters and gut microbiota composition. This study was performed in two phases of seven days each, comprising a basa...
Article
Full-text available
We report the complete annotated genome sequence of the plant-pathogenic bacterium Xylella fastidiosa subsp. fastidiosa strain IVIA5235. This strain was recovered from a cherry tree in Mallorca, Spain.