National Research Council of Italy

Institute of Biosciences and BioResources

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Vladimir Totev Valkov

Role: Researcher
Section: Researchers and Technologists
Division: Naples
Tel: (39) 081-6132280


Role: Researcher

Section: Researchers and Technologists

Division: Napoli

Tel. (39) 081 6132434



2019: Researcher at CNR-IBBR, Research Division of Napoli

2017-2019: Temporary position as a researcher at CNR-IBBR, Research Division of Napoli

2015-2016: Temporary position as a researcher at CNR-IBBR, Research Division of Napoli

2010-2015: Research fellow at CNR- Institute of Genetics and Biophysics “A. Buzzati Traverso”, Napoli.

2004-2009: Research fellow at CNR-IGV, Institute of Plant Genetics, Portici (NA).

2001-2004: Post Doctoral fellow at the Institute of Plant Genetics and Crop Plant Research (IPK) Gatersleben, Germany


2000: PhD: Institute of Genetic Engineering, Kostinbrod, (now AgroBioInstitute, Sofia), Bulgaria.

Thesis: “Development and characterization of transgenic tobacco lines resistant to herbicides”.

1991: MSc: University ”St. Kliment Ohridski”, Faculty of Centre of Biotechnology, Sofia, Bulgaria.


nitrate transporters; symbiotic nitrogen fixation; nitrogen use efficiency.

plastid gene expression and transformation;

plant-bacteria interactions


Valkov VT, Rogato A, Sol S, Chiurazzi M. 2020. The functional characterization of LjNRT2.4 indicates a novel, positive role of nitrate for an efficient nodule N 2 -fixation activity. New Phytologist. doi: 10.1111/nph.16728.

Sol S, Valkov VT, Rogato A, Noguero M, Gargiulo L, Mele G, Lacombe B, Chiurazzi M. 2019. Disruption of the Lotus japonicus transporter LjNPF2.9 increases shoot biomass... BMC Plant Biol. 19(1):380. doi: 10.1186/s12870-019-1978-5.PMID: 31470797

Valkov VT, Rogato A, Alves LM, Sol S, Noguero M, Léran S, Lacombe B, Chiurazzi M. 2017. The Nitrate Transporter Family Protein LjNPF8.6 Controls the N-Fixing Nodule A... Plant Physiol. 175(3):1269-1282. doi: 10.1104/pp.17.01187.

Parlati A, Valkov VT, D’Apuzzo E, Alves LM, Petrozza A, Summerer S, Costa A, Cellini F, Vavasseur A, Chiurazzi M. 2017. Ectopic Expression of PII Induces Stomatal Closure in Lotus japonicus. Front Plant Sci. 8:1299. doi: 10.3389/fpls.2017.01299.

Valkov VT, Chiurazzi M. 2016. Phenotypic screening for plant growth parameters and symbiotic performances of Lotus corniculatus cultivars maintaned in different nutritional conditions. Plants 5(4), 40, DOI:10.3390/plants5040040

Rogato A, Valkov VT, Alves LM, Apone F, Colucci G, Chiurazzi M. 2016. Down-regulated Lotus japonicus GCR1 plants exhibit nodulation signalling pathw... Plant Sci. 247:71-82.

D’Apuzzo E, Valkov VT, Parlati A, Omrane S, Barbulova A, Sainz MM, Lentini M, Esposito S, Rogato A, Chiurazzi M. 2015 PII overexpression in Lotus japonicus affects nodule activity in permissive low nitrogen conditions and increases nodule numbers in high nitrogen treated plants. Mol Plant Microbe Interact. 28: 432-442.

Gurushidze M, Hensel G, Hiekel S, Schedel S, Valkov V T, Kumlehn J. 2014. True-breeding targeted gene knock-out in barley using designer tale-nuclease in haploid cells. PLoS One. 18;9(3):e92046.

Criscuolo G, Valkov VT, Parlati A, Alves L, Chiurazzi M. 2012. Molecular characterization of the Lotus japonicus NRT1(PTR) and NRT2 families.. Plant, Cell and Environment 35: 1567-1581.

Valkov VT, Scotti N, Kahlau S, MacLean D, Grillo MS, Gray JC, Bock R, Cardi T. 2009. Genome-wide analysis of plastid gene expression in potato leaf chloroplasts and tuber amyloplasts: transcriptional and post-transcriptional control. Plant Physiology. 150: 2030-2044.


Selected Publications

(full list available at CNR People)

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