Dr. R.Valarmathi
Scientist (Senior Scale) (Cytogenetics, Economic Botany and Plant genetic Resources )
Current Areas of Research
External Funded Projects
Publications
Current Areas of Research
♥ Screening wild sugarcane germplasm for drought tolerance related traits.
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♥ Genome editing and functional genomics approach to decipher molecular mechanism of tillering in sugarcane.
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♥ Understanding sugarcane root system architecture for abiotic stress tolerance related traits
External Funded Projects
♦ Identification of new genetic resources for drought tolerance related traits from Erianthus a related genera of sugarcane (2013-2015) DST-SERB (PI).
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♦ Improving tillering and yield in sugarcane through creating novel alleles of strigolactone biosynthesis gene MAX4-1 using CRISPR/Cas9 (2022-2025) DBT (PI).
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♦ Deciphering the genetic basis of root-system architecture for developing climate resilient sugarcane (2022-2025). BRNS (PI).
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♦ Targeted editing of host translation initiation factor to confer resistance to virus in sugarcane (2021-2024). DST SERB (Co-PI).
Publications
Nerkar G, Devarumath S, Purankar M, Kumar A, Valarmathi R, Devarumath R and Appunu C.2022.  Advances in Crop Breeding Through Precision Genome Editing. Frontiers in Genetics. 13 880195.
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Valarmathi Ramanathan, Rohit Kambale, Rakshana Palaniswamy, Hifzur Rahman, Raveendran Muthurajan. Comparative RNA-Seq analysis unravels molecular mechanisms regulating therapeutic properties in the grains of traditional rice Kavuni. Plant Science.324.111411
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Naveenarani Murugan, Vignesh Palanisamy, Mahadevaiah Channappa, Valarmathi Ramanathan, Manimekalai Ramaswamy, Hemaprabha Govindakurup and Appunu Chinnaswamy.2022. Genome-Wide In Silico Identification, Structural Analysis, Promoter Analysis, and Expression Profiling of PHT Gene Family in Sugarcane Root under Salinity Stress. Sustainability.14
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P.Vignesh,C. Mahadevaiah, R.Valarmathi, S. Dharshini , Singh Nisha, G. S. Suresha , S. Swathi , H. K. Mahadeva Swamy, V. Sreenivasa , K. Mohanraj, G Hemaprabha , Ram Bakshi & C.Appunu.2021. Comparative de novo transcriptome analysis identifies salinity stress responsive genes and metabolic pathways in sugarcane and its wild relative Erianthus arundinaceus [Retzius] Jeswiet. Scientific Reports.11:24514
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R.Valarmathi, H.K. Mahadevaswamy, V. Ulaganathana , C.Appunu , G. Hemaprabha and R.Sathishraj. Â Low cost high throughput image based root phenotyping pipeline for evaluation of sugarcane root system architecture under drought stress. Journal of Sugarcane Research.11;24-36
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Channappa Mahadevaiah, Chinnaswamy Appunu, Karen Aitken, Palanisamy Vignesh, Huskur Kumaraswamy Mahadeva Swamy, Ramanathan Valarmathi, Govind Hemaprabha, Ganesh Alagarasan and Bakshi Ram. 2021. Genomic Selection in Sugarcane: Current Status and Future Prospects. Frontiers in Plant Science.27
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Valarmathi, H. K. Mahadevaswamy, V. Ulaganathan, C. Appunu, S. Karthigeyan, Adhini S. Pazhany. 2021. Assessing the Genetic Diversity and Population Structure of World Germplasm Collection of Erianthus arundinaceus (Retz.) Jeswiet Using Sequence-Related Amplified Polymorphic Markers Sugartech. doi.org/10.1007/s12355-021-01037-8
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Sudhagar Rajaprakasam, Hifzur Rahman, Shamini Karunagaran, Kannan Bapu ,Ganesamurthy Kulandivelu, Rohit Kambale , Valarmathi Ramanathan , Raveendran Muthurajan.2021.Comparative transcriptome and metabolome profiling in the maturing seeds of contrasting cluster bean (Cyamopsis tetragonoloba L. Taub) cultivars identified key molecular variations leading to increased gum accumulation. Gene. 791: 145727
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Raveendran Muthurajan , Valarmathi Ramanathan, Abhijeet Bansilal et al.2021. Controlled Over-Expression of AtDREB1A Enhances Tolerance against Drought and Salinity in Rice. Agronomy.11:159
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Appunu, J. Ashwin Narayan, H. K. Mahadevaswamy, S. Karthigeyan, R. Valarmathi , C. Mahadevaiah , Ravinder Kumar, Mintu Ram Meena , Bakshi Ram.2020. Variability and molecular diversity of wild sugarcane germplasm collected from low temperature regions Lohit and Chang.lang of Arunachal Pradesh. Indian Journal of Biotechnology.19
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Valarmathi, H.K.M. Swamy, K. Preeti and C. Appunu.2021. Comparative profiling of drought induced root metabolic responses in sugarcane wild relative Erianthus arundinaceus (IND 04-1335) and a commercial variety Co 99004. Journal Of Environmental Biology.42:668-677
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Ashokkumar S, Jaganathan D, Ramanathan V, Rahman H, Palaniswamy R, Raveendran. M.2020. Creation of novel alleles of fragrance gene OsBADH2 in rice through CRISPR/ Cas9 mediated gene editing. PLoS ONE. 15(8): e0237018.
Raveendran, M and R.Valarmathi. 2020. Â Molecular tagging of a novel genetic locus linked to accumulation of Lutein, a therapeutic carotenoid in rice grains. Indian Journal of Genetics and Plant Breeding. 80(1): 9-15.
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R.Valarmathi, H.K. Mahadeva Swamy , K. Preethi, J. Ashwin Narayan , C.Appunu and Hifzur Rahman. 2020. Characterization and in silico analyses of RTCS gene from sugarcane encoding LOB protein family of transcription factors: a key regulator of shoot-borne root initiation. Journal of Sugarcane Research. 10 (12-23).
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Swathik Clarancia , M. Naveenarani , R .Valarmathi , G. S. Suresha , G. Hemaprabha , Bakshi Ram and C. Appunu. 2020. Isolation, characterization and expression analysis of novel water deficit stressresponsive DEEPER ROOTING 1 (DRO1) gene from drought-tolerant Erianthus arundinaceus. Journal of Sugarcane Research.10: (1-11).
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P.Rakshana, R.Valarmathi and M.Raveendran. 2019.  Optimization of tissue culture protocol for rapid regeneration of traditional therapeutic rice genotype ‘Kavuni’. Electronic Journal of plant Breeding. 10(2): 334-340
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Valarmathi R., Hifzur Rahman, Saravanan S., Jagadeeshselvam N., Ashokkumar K., Sudha M., Chandrababu R. and Raveendran M. Â OsARD4 encoding an acireductonedioxygenase improves root architecture in rice by promoting development of secondary root. Â Nature:Scientific Reports. 8: 15713
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Raveendran M., Hifzur Rahman, Muthukumar M., Valarmathi R and Jagadeeshselvam N. 2018. Drought responsive transcriptome profiling in roots of contrasting rice genotypes.  Indian Journal of plant physiology. 23(3). 393-407
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Rahman H., Dakshinamurthi V., Ramasamy S., Manickam S., Kaliyaperumal A.K., Raha S., Panneerselvam N., Ramanathan V., Nallathambi J., Sabariappan R., Muthurajan R. 2018. Â Introgression of submergence tolerance into CO 43, a popular rice variety of India through marker-assisted backcross breeding. Czech Journal of genetics and plant breeding. 54(3): 101-108.
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R. Shoba et al., R.Valarmathi. Â Development and genetic characterization of a noval herbicide (Imazethapyr) tolerant mutant in rice. Rice 10:10. 2017
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H Rahman, V Ramanathan, J Nallathambi, S Duraialagaraja, M, Raveendran. 2016. Over-expression of a NAC 67 transcription factor from finger millet (Eleusinecoracana L.) confers tolerance against salinity and drought stress in rice.  BMC biotechnology. 16(1):7
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H Rahman, R Valarmathi, N Jagadeeshselvam, R Muthurajan. 2015. Comparative analysis of salinity responsive expression pattern of putative candidate genes in rice and finger millet. International Journal of Tropical Agriculture.33(2)PartIII. 1411-1417
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Valarmathi, M. Raveendran, S. Robin & N. Senthil. 2014. Unraveling the nutritional and therapeutic properties of ‘Kavuni’ a traditional rice variety of Tamil Nadu.  Journal of Plant Biochemistry and Biotechnology. 24(3): 305-315
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H Rahman, N Jagadeeshselvam, R.Valarmathi, B Sachin, R Sasikala, M Raveendran. 2014. Â Transcriptome analysis of salinity responsiveness in contrasting genotypes of finger millet (Eleusine coracana L.) through RNA-sequencing. Plant Molecular Biology. 85 (4-5)