National Institute of Plant Genome Research
 
    Dr. Jitender Giri
    Staff Scientist II
    Ph. D, University of Delhi, South Campus
    Tel: 91-11-26735227
    Fax: 91-11-26742658
    E-mail: jitender@nipgr.ac.in, jitender.giri@gmail.com
 Career
Visiting Scientist, University of Nottingham, UK (2013-2014)
Visiting Scientist, Penn State University, USA (2012)
Staff Scientist II, NIPGR (2011 onwards)
Post Doc, University of Delhi, South Campus (2010-2011)
Ph. D., University of Delhi, South Campus (2004-2010)
 Awards and Scholarships
Junior and Senior Research Fellowships, CSIR, 2004-2009
University Gold Medal for first position in master's examination
Young Scientist Platinum Jubilee Award (2013) from the National Academy of Sciences, India (NASI).
DBT-CREST Fellowship Award for 2011-2012 from the Department of Biotechnology, Government of India, New Delhi.
 Research Interest
Water-deficit (WD) stress is a major constraint for modern agriculture as it results in reduced crop productivity. In addition to many physiological changes in plants, WD also reduces nutrient uptake from soil. Phosphate (P) is quite abundant nutrient ion in soil; however, it poses severe problems due to its unavailability to plants which is further enhanced in WD condition. Among the plant's adaptation tactics against P starvation, root system architecture modification is common with WD stress. We are interested in delineating the molecular mechanisms of root modification for improving P utilization.
Our study on transcriptomic, morphological and physiological changes in root and whole plant under low P has revealed, both recycling intracellular P and acquiring more P from soil under P starvation as adaptation strategies. We are now characterizing the potential genes involved in enhancing P availability in soil and inside the cell. We further found the important roles of auxin and JA in root architecture alteration under P starvation. Root hairs development is one such trait which is a key to survive efficiently under water and P deficit and is regulated by auxins.
Using modern tools of functional genomics like transriptomics, metabolomics, proteomics and phenomics in rice, Arabidopsis and Yeast we are now focusing on following areas:
How P starvation leads to reorganization of membrane phospholipids and is it an efficient strategy to alleviate P deficiency ?

How Auxin and JA affect root growth and development under P starvation ?
We are also investigating the role of different microRNAs in regulating molecular response to P starvation in rice.
 Group Members
 Selected Publications
Tyagi H, Jha S, Sharma M, Giri J, Tyagi AK (2014). Rice SAPs are responsive to multiple biotic stresses and overexpression of OsSAP1, an A20/AN1 zinc-finger protein, enhances the basal resistance against pathogen infection in tobacco. Plant Sci. (In press).
Giri J, Dansana PK, Kothari KS, Sharma G, Vij S and Tyagi AK (2013) SAPs as novel regulators of abiotic stress response in plants. BioEssays 35: 639-648.
Giri J (2011) Glycinebetaine and abiotic stress tolerance in plants. Plant Signal. Behav. 6: 1746- 1751.
Giri J, Vij S, Dansana P, Tyagi AK (2011). Rice A20/AN1 zinc-finger containing stress-associated proteins (SAP1/11) and a receptor-like cytoplasmic kinase (OsRLCK253) interact via A20 zinc-finger and confer abiotic stress tolerance in transgenic Arabidopsis plants. New Phytologist (doi: 10.1111/j.1469-8137.2011.03740.x).
Kathuria* H, Giri* J, Nataraja* KN, Murata N, Udayakumar M, Tyagi AK (2009). Glycinebetaine-induced water-stress tolerance in codA-expressing transgenic indica rice is associated with up-regulation of several stress responsive genes. Plant Biotechnol J 7: 512-526. *As joint first author.
Vij* S, Giri* J, Dansana PK, Kapoor S, Tyagi AK (2008). The receptor-like cytoplasmic kinase (OsRLCK) gene family in rice: organization, phylogenetic relationship, and expression during development and stress. Mol Plant 1: 732-750. *As joint first author.
Singh A, Giri J, Kapoor S, Tyagi AK, Pandey GK (2010) Protein phosphatase complement in rice: genome-wide identification and transcriptional analysis under abiotic stress condition and reproductive development. BMC genomics 11: 435
Ray S, Dansana PK, Giri J, Deveshwar P, Kapoor S, Khurana JP, Tyagi AK (2010) Modulation of transcription factor and metabolic pathway genes in response to water-deficit stress in rice. Funct Integr Genomics 11: 157-178
Kathuria H, Giri J, Tyagi H, Tyagi AK (2007). Advances in transgenic rice biotechnology. Crit Rev Plant Sci 26: 65-103
 Book Chapters
Pandey BK, Mehra P and Giri J (2013) Phosphorus starvation response in plants and opportunities for crop improvement. In: Tuteja N, Gill SS(eds), Climate Change and Abiotic Stress Tolerance. Wiley-VCH Verlag GmbH & Co, Weinheim, Germany, pp 991-1012.
Giri J, Tyagi S, Tyagi AK (2011) Evolution and Diversity of Rice Genome. In Sharma AK (Ed.), Biodiversity. West Bengal Biodiversity Board
Ray S, Dansana PK, Bhaskar A, Giri J, Kapoor S, Khurana JP, Tyagi AK (2009). Emerging trends in functional genomics for stress tolerance in crop plants. In Heribert Hirt, ed, Plant Stress Biology. WILEY-VCH Verlag GmbH and Co. KGaA, Weinheim, pp 37-63.
Tyagi AK, Khurana JP, Khurana P, Kapoor S, Singh VP, Singh AK, Thakur JK, Gupta V, Anand S, Vij S, Jain M, Ray S, Agarwal P, Arora R, Sharma P, Mukerjee S, Nijhawan A, Giri J, Khurana R (2005) Expression and functional analysis of rice genes involved in reproductive development and stress response. Rice Genetics V, 301-334, IRRI, Philippines.
 Patent
Receptor-like cytoplasmic kinase (OsRLCK) genes from rice for conferring stress tolerance in plants (2008). Inventors: Tyagi AK, Kapoor S, Giri J, Dansana PK, Vij S IPA3944.