Publications of NIPGR Scientists

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Author: search.filters.author.Ranjan, ShubhashishHas files: No

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    Novel method for rapid screening of chickpea for combined dry root rot disease and osmotic stress
    (Springer Nature Publishing AG, 2026) Ranjan, Shubhashish; Chavan, Chaitali Narendra; Senthil-Kumar, Muthappa
    Chickpea (Cicer arietinum L.), confronts substantial challenges from the emerging pathogenic fungus Macrophomina phaseolina (Tassi) Goid, causing dry root rot (DRR) disease. Chickpea plants severely affected by combined DRR and drought stress. Currently sick plot and sick pot method are utilized for germplasm screening to identify tolerant genotypes. These methods are time-consuming; therefore, we propose a novel methodology for the rapid screening of chickpea under combined DRR and osmotic stress conditions. This chapter introduces an adept high-throughput phenotyping methodology, conducted within controlled laboratory conditions, aiming to investigate the interaction between osmotic stress and DRR disease in chickpea crops. The methodology employs an innovative pouch technique for screening combined stress, providing a streamlined temporal investigation process and precise control over stress parameters. The incorporation of polyethylene glycol (PEG) enables the simultaneous imposition of osmotic stress alongside pathogen infection, making the methodology versatile for studying combined stress scenarios. This approach fills a gap in concurrent stress imposition techniques, enhancing germplasm screening by identifying genotypes with varying susceptibility and resistance levels. Thus, we suggest use of high-throughput phenotyping in combination genome-wide association study (GWAS) can take combined stress resistance breeding in chickpea at next level to combat food security and climate change.
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    TAIL-PCR for the recovery of Tnt1 flanking sequences in chickpea: a tool for functional genomics studies
    (Springer Nature Publishing AG, 2026) Chauhan, Chetan; Ranjan, Shubhashish; Jangid, Vinod Kumar; Sinharoy, Senjuti; Senthil-Kumar, Muthappa
    Thermal asymmetric interlaced polymerase chain reaction (TAIL-PCR) is a powerful technique for amplifying genomic regions flanking Tnt1-retortransposon insertions in plants. Here, we present a TAIL-PCR protocol for amplifying Tnt1-flanking genomic sequences in chickpea using Tnt1-transformed hairy roots as the starting material. The amplified products can be cloned and sequenced for the precise mapping of Tnt1-integration sites in the chickpea genome. This method enables the functional characterization of chickpea genes governing root-specific traits and can be easily adapted for flanking sequence tag recovery in chickpea Tnt1-mutant populations.