A5027171023- Plant Virus Research Studies
- Psidium guajava Extracts and Applications
- Banana Cultivation and Research
- Plant Pathogens and Fungal Diseases
- Papaya Research and Applications
- Plant Pathogenic Bacteria Studies
- CRISPR and Genetic Engineering
- Bacteriophages and microbial interactions
- Genetically Modified Organisms Research
- Agricultural pest management studies
- Plant Pathogens and Resistance
- Transgenic Plants and Applications
- Plant and Fungal Interactions Research
- Bat Biology and Ecology Studies
- Plant tissue culture and regeneration
- Insect Resistance and Genetics
- Animal Genetics and Reproduction
- Plant Physiology and Cultivation Studies
- Botanical Research and Applications
- Cassava research and cyanide
- Evolution and Genetic Dynamics
- Marine animal studies overview
- Cocoa and Sweet Potato Agronomy
- Bamboo properties and applications
- Evolution and Paleontology Studies
University of the Andes
2007-2024
Universidad de Los Andes
2011
Agricultural Research Service
2011
Universidad de Los Andes
2004-2010
United States Department of Agriculture
2004
Daniel K. Inouye U.S. Pacific Basin Agricultural Research Center
2003
Cornell University
1999-2001
Sturnira is the most speciose genus of New World leaf-nosed bats (Phyllostomidae). We name adrianae, new species. This taxon born polytypic, divided into a larger subspecies (S. a. adrianae) widespread in mountains northern and western Venezuela, Colombia, smaller caripana) endemic to northeastern Venezuela. The species inhabits evergreen, deciduous, cloud forests at mainly medium (1000-2000 m) elevations. It has long been confused with S. ludovici, but it more closely related oporaphilum....
Phytophthora infestans (Mont.) de Bary, the causal agent of potato late blight, is responsible for tremendous crop losses worldwide. Countries in northern part Andes dedicate a large proportion highlands to production potato, and more recently, solanaceous fruits such as cape gooseberry (Physalis peruviana) tree tomato (Solanum betaceum), all which are hosts this oomycete. In Andean region, P. populations have been well characterized Ecuador Peru, but poorly understood Colombia Venezuela. To...
Abstract Guava ( Psidium guajava L.) is a semi-domesticated fruit tree of moderate importance in the Neotropics, utilized for millennia due to its nutritional and medicinal benefits, but origin domestication remains unknown. In this study, we examine genetic diversity population structure 215 plants from 11 countries Mesoamerica, Andes, Amazonia using 25 nuclear microsatellite loci propose an domestication. Genetic analyses reveal one gene pool Mesoamerica (Mexico) four South America...
Local varieties of papaya grown in the Andean foothills Mérida, Venezuela, were transformed independently with coat protein (CP) gene from two different geographical Papaya ringspot virus (PRSV) isolates, designated VE and LA, via Agrobacterium tumefaciens. The CP genes both PRSV isolates show 92 96% nucleotide amino acid sequence similarity, respectively. Four PRSV-resistant R0 plants intercrossed or selfed, progenies tested for resistance against homologous heterologous HA (Hawaii) TH...
The virus-resistant, transgenic commercial papaya Rainbow and SunUp (Carica L.) have been consumed locally in Hawaii elsewhere the mainland United States Canada since their release to planters 1998. These are derived from line 55-1 carry coat protein (CP) gene of ringspot virus (PRSV). PRSV CP was evaluated for potential allergenicity, an important component assessing safety food plants. transgene sequence did not exhibit greater than 35% amino acid homology known allergens, nor it a stretch...
We present data concerning the creation of transgenic papayas resistant to Papaya ringspot virus (PRSV) and their adoption by three different countries: United States (e.g., Hawaii), Jamaica, Venezuela. Although sets showed effective resistance PRSV, rate in each country has varied from full utilization Hawaii aggressive testing but delay deregulating product Jamaica rejection at an early stage Factors that contributed rapid include a timely development product, PRSV causing severe damage...
Guava is one of the neotropical fruits with major economic value in world. In spite former tradition crop growth and consumption guava Venezuela, its cultivation has been performed carelessly, since an appropriate management taking into account recent advances modern agriculture not carried out. addition, research field scarce country, exception continuous successful efforts phytopathology. Rational programs genetic improvement have so far, there are no germplasm banks that may for diversity...
Papaya (Carica papaya L.) is one of the most important and preferred crops in rural communities Thailand. ringspot virus (PRSV) a serious disease throughout Efforts to control by various methods either have not been successful or resulted sustainable control. In 1995, collaborative research Department Agriculture Thailand Cornell University develop transgenic resistant PRSV was initiated. Two local Thai cultivars were transformed microprojectile bombardment with use nontranslatable coat...
Background: Woody bamboos of the genus Chusquea grow along a broad range elevations in Venezuelan Andes. Their growth-form and density vary cloud forest – páramo gradient. In this article, we related ecophysiological traits population genetic diversity information to explain distribution patterns Merida Andes, Venezuela.Aims: We quantified differences response scandent shrub-like Chusquea, taking account their flowering patterns, habitat.Methods: low temperature resistance, water relations...
Simple sequence repeat (SSR) markers have proven to be a very powerful tool analyze genetic variability and relatedness at different hierarchical levels, for map generation validation as well many other applications. However, despite the fact that development of species-specific SSR involves laborious costly task, there is also lot information concerning successful use derived from one species employed with closely related taxa. In this research we report on developed Psidium guajava,...
Folivory has been reported in only five species of microbats, and described as a seasonal phenomenon. Bats feed on leaves by chewing portion leaf, extracting the liquid, discarding fibrous material. In course study reproductive pattern Artibeus amplus Venezuelan Andes, were frequently observed cave used this roost. We took opportunity to (1) identify consumed poorly known Neotropical bat species, (2) test whether folivory is temporal phenomenon, such other leaf-eating species. consumes seven...
When the Spanish conquerors became acquainted with tropical America, they identified and described numerous types of guavas, which varied in color, form, flavor. Some these were disseminated to rest world yielded varieties cultivated nowadays. Commercial guava orchards are located mainly Venezuelan plains, rely on a few imported over 40 years ago. However, aside from grown commercial plantations, most territory comprises landraces. Hence, due lack national despite huge, but unexploited...
Usually, the easiest assessment of genetic variation is through morphological or phenotypic measures. Also, problems arising from identification a great number plants in fruit tree collection as well those concerned with protection varietal names ask for use specific descriptors. In consequence, guidelines published 1987 by International Union Protection New Varieties Plants (UPOV) provided strategy conduction tests distinctness, homogeneity, and stability guava. These descriptors are an...