Abstract
Chickpea is a major protein source in low socio-economic classes and cultivated in marginal soil without fertilizer or irrigation. As a result of its root nodule formation capacity chickpea can directly use atmospheric nitrogen. Chickpea is recalcitrant to stable transformation, particularly root regeneration efficiency of chickpea is low. The composite plant-based system with a non-transformed shoot and transformed root is particularly important for root biologist and this approach has already been used successfully for root nodule symbiosis, arbuscular mycorrhizal symbiosis, and other root-related studies. Use of fluorescent marker-based approach can accurately identify the transformed root from its non-transgenic counterpart. RNAi-based gene knockout, overexpression of genes, promoter GUS analysis to understand tissue specific expression and localization of protein can be achieved using the hairy root-based system. We have already published a hairy root-based transformation and composite plant regeneration protocol of chickpea. Here we are describing the recent modification that we have made to increase the transformation frequency and nodule morphology. Further, we have developed a pouch based artificial system, large number of plants can be scored for its nodule developmental phenotype, by using this system.
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Acknowledgments
We thank J. Terpolilli, Murdoch University, Australia for providing M. ciceri CC1192; Senthil-Kumar Muthappa, NIPGR, New Delhi for providing chickpea seeds (BGD 112, PUSA 372, GNG 1958, GNG 1488, GNG 1581, RSG 931); Michael Udvardi, Nobel Research Institute, Oklahoma, USA for A. rhizogenes ARqua1 strain; Maria J. Harrison, Boyce Thompson Institute for Plant Research Ithaca, USA for providing pAtUb driven subcellular marker construct; M. DasGupta, Department of Biochemistry, University of Calcutta, for providing pCAMBIA2301 vector; NIPGR for their confocal facilities; and CIF-NIPGR; NIPGR-DELCON for their support. This work is supported by core research grant from National Institute of Plant Genome Research, Ramalingwaswami Re-entry grant, DBT (BT/RLF/Re-entry/41/2013).
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Mandal, D., Srivastava, D., Sinharoy, S. (2020). Optimization of Hairy Root Transformation for the Functional Genomics in Chickpea: A Platform for Nodule Developmental Studies. In: Jain, M., Garg, R. (eds) Legume Genomics. Methods in Molecular Biology, vol 2107. Humana, New York, NY. https://doi.org/10.1007/978-1-0716-0235-5_18
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DOI: https://doi.org/10.1007/978-1-0716-0235-5_18
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