Research Project
My research focused in studying the Actinobacterial community structure in different hyperthermophilic sediments from Zambia, China, New Zealand and Kenya.
Publications
In Press or Submitted
6. Pérez T, Balcázar JL, Peix A, Valverde A, Velázquez E, de Blas I, Ruiz-Zarzuela I. Lactococcus lactis subsp. tructae subsp. nov. isolated from the intestinal mucus of brown trout (Salmo trutta) and rainbow trout (Oncorhynchus mykiss). IJSEM (In Press)
5. Salazar S, Sanchez LE, Alvarez J, Valverde A, Galindo P, Igual JM, Peix A, Santa-Regina I. Correlation among soil enzyme activities under different forest system management practices. Ecological Engineering (In Press).
4. Carro-García L, Rivas R, León-Barrios M, González-Tirante M, Velazquez E, Valverde A. Herbaspirillum canariense sp. nov., Herbaspirillum aurantiacum sp. nov. and Herbaspirillum soli sp. nov., three new species isolated in Tenerife (Canary Islands). (Submitted).
3. Valverde A, Velázquez E, Igual JM, van Berkum P. Evidence for an American origin of the genes for symbiosis in Rhizobium lusitanum. (Submitted)
2. Valverde A, González-Tirante M, Medina-Sierra M, Wackerow-Kouzova ND, Rivas R, Santa-Regina I, Igual JM. Culturable bacterial diversity from the chestnut (Castanea sativa Mill.) phyllosphere and screening of antagonism against the fungi causing the chestnut blight and ink diseases. (Submitted)
1. Valverde A, González-Tirante M, Medina-Sierra M, Santa-Regina I, García-Sánchez A, Igual JM. Diversity and community structure of culturable arsenic-resistant bacteria across a soil arsenic gradient at an abandoned tungsten-tin mining area. (Submitted)
Published
25. Velazquez E, Valverde A, Rivas R, Gomis V, Peix A, Gantois I, Igual JM, Leon-Barrios M, Willems A, Mateos PF, Martinez-Molina E (2010) Strains nodulating Lupinus albus on different continents belong to several new chromosomal and symbiotic lineages within Bradyrhizobium. Antonie Van Leeuwenhoek 97: 363-76
24. Valverde A, Fterich A, Mahdhi M, Ramirez-Bahena MH, Caviedes MA, Mars M, Velazquez E, Rodriguez-Llorente ID (2010) Paenibacillus prosopidis sp. nov., isolated from the nodules of Prosopis farcta. IJSEM 60: 2182-6
23. Lerner A, Valverde A, Castro-Sowinski S, Lerner H, Okon Y, Burdman S (2010) Phenotypic variation in Azospirillum brasilense exposed to starvation. Environmental Microbiology Reports 2: 577-86
22. Lerner A, Castro-Sowinski S, Valverde A, Lerner H, Dror R, Okon Y, Burdman S (2009) The Azospirillum brasilense Sp7 noeJ and noeL genes are involved in extracellular polysaccharide biosynthesis. Microbiology-Sgm 155: 4058-68
21. Delvasto P, Ballester A, Munoz JA, Gonzalez F, Blazquez ML, Igual JM, Valverde A, Garcia-Balboa C (2009) Mobilization of phosphorus from iron ore by the bacterium Burkholderia caribensis FeGL03. Minerals Engineering 22: 1-9
20. Alvarez-Martinez ER, Valverde A, Ramirez-Bahena MH, Garcia-Fraile P, Tejedor C, Mateos PF, Santillana N, Zuniga D, Peix A, Velazquez E (2009) The analysis of core and symbiotic genes of rhizobia nodulating Vicia from different continents reveals their common phylogenetic origin and suggests the distribution of Rhizobium leguminosarum strains together with Vicia seeds. Archives of Microbiology 191: 659-68
19. Yishay M, Burdman S, Valverde A, Luzzatto T, Ophir R, Yedidia I (2008) Differential pathogenicity and genetic diversity among Pectobacterium carotovorum ssp carotovorum isolates from monocot and dicot hosts support early genomic divergence within this taxon. Environmental Microbiology 10: 2746-59
18. Valverde A, Peix A, Rivas R, Velazquez E, Salazar S, Santa-Regina I, Rodriguez-Barrueco C, Igual JM (2008) Paenibacillus castaneae sp nov., isolated from the phyllosphere of Castanea sativa Miller. IJSEM 58: 2560-4
17. Ramirez-Bahena MH, Garcia-Fraile P, Peix A, Valverde A, Rivas R, Igual JM, Mateos PF, Martinez-Molina E, Velazquez E (2008) Revision of the taxonomic status of the species Rhizobium leguminosarum (Frank 1879) Frank 1889(AL), Rhizobium phaseoli Dangeard 1926(AL) and Rhizobium trifolii Dangeard 1926AL. R. trifolii is a later synonym of R. leguminosarum. Reclassification of the strain R. leguminosarum DSM 30132 (= NCIMB 11478) as Rhizobium pisi sp nov. IJSEM 58: 2484-90
16. Delvasto P, Valverde A, Ballester A, Munoz JA, Gonzalez F, Blazquez ML, Igual JM, Garcia-Balboa C (2008) Diversity and activity of phosphate bioleaching bacteria from a high-phosphorus iron ore. Hydrometallurgy 92: 124-9
15. Valverde A, Hubert T, Stolov A, Dagar A, Kopelowitz J, Burdman S (2008) Assessment of genetic diversity of Xanthomonas campestris pv. campestris isolates from Israel by various DNA fingerprinting techniques. Plant Pathology 56: 17-25
14. Stolov AY, Valverde A, Ronald P, Burdman S (2008) Purification of soluble and active RaxH, a transmembrane histidine protein kinase from Xanthomonas oryzae pv. oryzae required for AvrXa21 activity. Molecular Plant Pathology 8: 93-101
YStolov A and Valverde A contributed equally to this work
13. Peix AY, Valverde A, Rivas R, Igual JM, Ramirez-Bahena MH, Mateos PF, Santa-Regina I, Rodriguez-Barrueco C, Martinez-Molina E, Velazquez E (2007) Reclassification of Pseudomonas aurantiaca as a synonym of Pseudomonas chlororaphis and proposal of three subspecies, P. chlororaphis subsp chlororaphis subsp nov., P. chlororaphis subsp aureofaciens subsp nov., comb. nov and P. chlororaphis subsp aurantiaca subsp nov., comb. nov. IJSEM 57: 1286-90
YPeix A and Valverde A contributed equally to this work
12. Velazquez E, Rivas R, del Villar M, Valverde A, Peix A, Mateos PF, Martinez-Molina E (2006) A new approach for separating low-molecular-weight RNA molecules by staircase electrophoresis in non-sequencing gels. Electrophoresis 27: 1732-8
11. Valverde A, Okon Y, Burdman S (2006) cDNA-AFLP reveals differentially expressed genes related to cell aggregation of Azospirillum brasilense. FEMS Microbiology Letters 265: 186-94
10. Valverde A, Igual JM, Peix A, Cervantes E, Velazquez E (2006) Rhizobium lusitanum sp nov. a bacterium that nodulates Phaseolus vulgaris. IJSEM 56: 2631-7
9. Valverde A, Delvasto P, Peix A, Velazquez E, Santa-Regina I, Ballester A, Rodriguez-Barrueco C, Garcia-Balboa C, Igual JM (2006) Burkholderia ferrariae sp nov., isolated from an iron ore in Brazil. IJSEM 56: 2421-5
8. Valverde A, Burgos A, Fiscella T, Rivas R, Velazquez E, Rodriguez-Barrueco C, Cervantes E, Chamber M, Igual JM (2006) Differential effects of coinoculations with Pseudomonas jessenii PS06 (a phosphate-solubilizing bacterium) and Mesorhizobium ciceri C-2/2 strains on the growth and seed yield of chickpea under greenhouse and field conditions. Plant and Soil 287: 43-50
7. Igual JM, Valverde A, Velazquez E, Regina IS, Rodriguez-Barrueco C (2006) Natural diversity of nodular microsymbionts of Alnus glutinosa in the Tormes River basin. Plant and Soil 280: 373-83
6. Delvasto P, Valverde A, Ballester A, Igual JM, Munoz JA, Gonzalez F, Blazquez ML, Garcia C (2006) Characterization of brushite as a re-crystallization product formed during bacterial solubilization of hydroxyapatite in batch cultures. Soil Biology & Biochemistry 38: 2645-54
5. Valverde A, Velazquez E, Fernandez-Santos F, Vizcaino N, Rivas R, Mateos PF, Martinez-Molina E, Igual JM, Willems A (2005) Phyllobacterium trifolii sp nov., nodulating Trifolium and Lupinus in Spanish soils. IJSEM 55: 1985-9
4. Valverde A, Velazquez E, Gutierrez C, Cervantes E, Ventosa A, Igual JM (2003) Herbaspirillum lusitanum sp nov., a novel nitrogen-fixing bacterium associated with root nodules of Phaseolus vulgaris. IJSEM 53: 1979-83
3. Igual JM, Valverde A, Rivas R, Mateos PF, Rodriguz-Barrueco C, Martinez-Molina E, Cervantes E, Velazquez E (2003) Genomic fingerprinting of Frankia strains by PCR-based techniques. Assessment of a primer based on the sequence of 16S rRNA gene of Escherichia coli. Plant and Soil 254: 115-23
2. Rivas R, Velazquez E, Valverde A, Mateos PF, Martinez-Molina E (2001) A two primers random amplified polymorphic DNA procedure to obtain polymerase chain reaction fingerprints of bacterial species. Electrophoresis 22: 1086-9
1. Igual JM, Valverde A, Cervantes E, Velazquez E (2001) Phosphate-solubilizing bacteria as inoculants for agriculture: use of updated molecular techniques in their study. Agronomie 21: 561-8
Who am I?
Originally from Spain I obtained my PhD in Microbiology studying the “Diversity of microorganisms that form symbiosis with Phaseolus vulgaris”. Since then, all my research has focused in the areas of microbial ecology and plant-microbe Interactions. After working in Spain in different periods and in Israel for a couple of years I joined the IMBM team in March 2011.
When I am not in the lab I like spending my time traveling, reading, messing around with computers or having fun with my friends.
