@article { ISI:000357438200013, title = {Metabolic profiling of chickpea-Fusarium interaction identifies differential modulation of disease resistance pathways}, journal = {Phytochemistry}, volume = {116}, year = {2015}, month = {AUG}, pages = {120-129}, publisher = {PERGAMON-ELSEVIER SCIENCE LTD}, address = {THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND}, abstract = {

Chickpea is the third most widely grown legume in the world and mainly used as a vegetarian source of human dietary protein. Fusarium wilt, caused by Fusarium oxysporum f. sp. ciceri (Foc), is one of the major threats to global chickpea production. Host resistance is the best way to protect crops from diseases; however, in spite of using various approaches, the mechanism of Foc resistance in chickpea remains largely obscure. In the present study, non-targeted metabolic profiling at several time points of resistant and susceptible chickpea cultivars using high-resolution liquid chromatography-mass spectrometry was applied to better understand the mechanistic basis of wilt resistance or susceptibility. Multivariate analysis of the data (OPLS-DA) revealed discriminating metabolites in chickpea root tissue after Foc inoculation such as flavonoids, isoflavonoids, alkaloids, amino acids and sugars. Foc inoculated resistant plants had more flavonoids and isoflavonoids along with their malonyl conjugates. Many antifungal metabolites that were induced after Foc infection viz, aurantion-obstine beta-glucosides and querecitin were elevated in resistant cultivar. Overall, diverse genetic and biochemical mechanisms were operational in the resistant cultivar for Foc defense as compared to the susceptible plant. The resistant chickpea plants employed the above-mentioned metabolic pathways as potential defense strategy against Foc. (C) 2015 Elsevier Ltd. All rights reserved.

}, keywords = {Chickpea, Fusarium wilt, LC-MS, Metabolomics, OPLS-DA, Phytoalexin}, issn = {0031-9422}, doi = {10.1016/j.phytochem.2015.04.001}, author = {Kumar, Yashwant and Dholakia, Bhushan B. and Panigrahi, Priyabrata and Kadoo, Narendra Y. and Giri, Ashok P. and Gupta, Vidya S.} } @article { ISI:000378741200010, title = {Fusarium oxysporum mediates systems metabolic reprogramming of chickpea roots as revealed by a combination of proteomics and metabolomics}, journal = {Plant Biotechnology Journal}, volume = {14}, number = {7}, year = {2016}, month = {JUL}, pages = {1589-1603}, publisher = {WILEY-BLACKWELL}, address = {111 RIVER ST, HOBOKEN 07030-5774, NJ USA}, abstract = {

Molecular changes elicited by plants in response to fungal attack and how this affects plant-pathogen interaction, including susceptibility or resistance, remain elusive. We studied the dynamics in root metabolism during compatible and incompatible interactions between chickpea and Fusarium oxysporum f. sp. ciceri (Foc), using quantitative label-free proteomics and NMR-based metabolomics. Results demonstrated differential expression of proteins and metabolites upon Foc inoculations in the resistant plants compared with the susceptible ones. Additionally, expression analysis of candidate genes supported the proteomic and metabolic variations in the chickpea roots upon Foc inoculation. In particular, we found that the resistant plants revealed significant increase in the carbon and nitrogen metabolism; generation of reactive oxygen species (ROS), lignification and phytoalexins. The levels of some of the pathogenesis-related proteins were significantly higher upon Foc inoculation in the resistant plant. Interestingly, results also exhibited the crucial role of altered Yang cycle, which contributed in different methylation reactions and unfolded protein response in the chickpea roots against Foc. Overall, the observed modulations in the metabolic flux as outcome of several orchestrated molecular events are determinant of plant{\textquoteright}s role in chickpea-Foc interactions.

}, keywords = {Chickpea, fusarium oxysporum, Metabolomics, NMR, plant-pathogen interaction, proteomics}, issn = {1467-7644}, doi = {10.1111/pbi.12522}, author = {Kumar, Yashwant and Zhang, Limin and Panigrahi, Priyabrata and Dholakia, Bhushan B. and Dewangan, Veena and Chavan, Sachin G. and Kunjir, Shrikant M. and Wu, Xiangyu and Li, Ning and Rajmohanan, Pattuparambil R. and Kadoo, Narendra Y. and Giri, Ashok P. and Tang, Huiru and Gupta, Vidya S.} } @article {44586, title = {Integrated transcriptomic and proteomic analyses suggest the participation of endogenous protease inhibitors in the regulation of protease gene expression in helicoverpa armigera}, journal = {Molecular \& Cellular Proteomics}, volume = {17}, year = {2018}, month = {JUL}, pages = {1324-1336}, abstract = {Insects adapt to plant protease inhibitors (PIs) present in their diet by differentially regulating multiple digestive proteases. However, mechanisms regulating protease gene expression in insects are largely enigmatic. Ingestion of multi-domain recombinant Capsicum annuum protease inhibitor-7 (CanPI-7) arrests growth and development of Helicoverpa armigera (Lepidoptera: Noctuidae). Using de novo RNA sequencing and proteomic analysis, we examined the response of H. armigera larvae fed on recombinant CanPI-7 at different time intervals. Here, we present evidence supporting a dynamic transition in H. armigera protease expression on CanPI-7 feeding with general down-regulation of protease genes at early time points (0.5 to 6 h) and significant up-regulation of specific trypsin, chymotrypsin and aminopeptidase genes at later time points (12 to 48 h). Further, coexpression of H. armigera endogenous PIs with several digestive protease genes were apparent. In addition to the differential expression of endogenous H. armigera PIs, we also observed a distinct novel isoform of endogenous PI in CanPI-7 fed H. armigera larvae. Based on present and earlier studies, we propose potential mechanism of protease regulation in H. armigera and subsequent adaptation strategy to cope with anti-nutritional components of plants.}, doi = {10.1074/mcp.RA117.000533}, author = {Lomate, Purushottam R. and Dewangan, Veena and Mahajan, Neha S. and Kumar, Yashwant and Kulkarni, Abhijeet and Wang, Li and Saxena, Smita and Gupta, Vidya S. and Giri, Ashok P.} } @article {47347, title = {Functional insights into two Ocimum kilimandscharicum 4-coumarate-CoA ligases involved in phenylpropanoid biosynthesis}, journal = {International Journal of Biological Macromolecules}, volume = {181}, year = {2021}, month = {JUN }, pages = {202-210}, type = {Article}, abstract = {

Plant 4-coumarate-CoA ligase (4CL) catalyzes the ligation of CoA to cinnamic acid and its derivatives. Activated CoA esters are utilized for the biosynthesis of phenolic metabolites and lignin that play essential function in plants. Here, we characterize the diversity of Ocimum kilimandscharicum 4CLs (Ok4CLs). Phylogenetic analysis suggest that Ok4CLs could be grouped into three classes, class I -enzymes mostly involved in lignin biosynthesis, class II -non-structural phenylpropanoid biosynthesis and class III -yet to be characterized for specific role(s). We selected two Ok4CLs namely Ok4CL7 and Ok4CL15 for further characterization. Gene expression analysis sug-gested that Ok4CL7 is highly expressed in leaf trichomes, whereas Ok4CL15 is abundant in the roots. The recom-binant Ok4CL7 and Ok4CL15 had optimal enzyme activities at 40 degrees C in pH 8 and 7, respectively. Ok4CL7 showed substrate preference towards p-coumaric acid, ferulic acid and caffeic acid. While, Ok4CL15 preferredp-coumaric acid, ferulic acid and sinapic acid. Feruloyl adenylate showed higher number of contacts and lowers binding en-ergy with Ok4CL7 and 15 compared to cinnamoyl adenylate. Based on root-specific expression and preference for sinapic acid, Ok4CL15 might be involved in lignin biosynthesis. Further exploration is needed to unravel the role of diverse Ok4CLs in O. kilimandscharicum. (c) 2021 Elsevier B.V. All rights reserved.

}, keywords = {4-Coumarate-CoA ligase, Flavonoids, lignin, Ocimum kilimandscharicum, Phenylpropanoids}, issn = {0141-8130}, doi = {10.1016/j.ijbiomac.2021.03.129}, author = {Lavhale, Santosh G. and Joshi, Rakesh S. and Kumar, Yashwant and Giri, Ashok P.} } @article {47802, title = {Gibberellic acid induces unique molecular responses in {\textquoteleft}thompson seedless{\textquoteright} grapes as revealed by non-targeted metabolomics}, journal = {Journal of Plant Growth Regulation}, volume = {40}, year = {2021}, month = {FEB}, pages = {293 - 304}, type = {Article}, abstract = {Compact clusters and small berry size are the major problems associated with the commercialization of table grapes. The application of gibberellic acid 3 (GA3) has been a long-followed practice to overcome these issues. To analyze the molecular response of {\textquoteleft}Thompson Seedless{\textquoteright} grapes to GA3 treatment, we investigated the metabolomes of its rachises, clusters, and berries, 6~h and 24~h after the treatment. Metabolite profiling using non-targeted metabolomics approach revealed several metabolites, including arginine, proline, tyrosine, kaempferol, resveratrol, catechin, and so on as possible biomarkers of GA3 treatment in grapes. GA3 treatment greatly impacted the alanine, aspartate, and glutamate metabolism pathways, and the GA3-mediated alterations in the levels of certain plant growth regulators and primary metabolites were in accordance with important growth and developmental processes in grapes. This study highlights the effect of GA3 on the profiles of certain polyphenols impacting the flavone and flavonol biosynthesis pathways and hence the nutritional aspect of grapes. The results of this study would be useful to develop self-elongating varieties simplifying the grape cultivation.}, isbn = {1435-8107}, doi = {10.1007/s00344-020-10102-7}, author = {Jadhav, Uma and Mundhe, Swapnil and Kumar, Yashwant and Jogaiah, Satisha and Upadhyay, Anuradha and Gupta, Vidya S. and Kadoo, Narendra Y.} } @article {46917, title = {Gibberellic acid induces unique molecular responses in {\textquoteleft}thompson seedless{\textquoteright} grapes as revealed by non-targeted metabolomics}, journal = {Journal of Plant Growth Regulation}, volume = {40}, year = {2021}, month = {FEB}, pages = {293-304}, type = {Article}, abstract = {

Compact clusters and small berry size are the major problems associated with the commercialization of table grapes. The application of gibberellic acid 3 (GA(3)) has been a long-followed practice to overcome these issues. To analyze the molecular response of {\textquoteleft}Thompson Seedless{\textquoteright} grapes to GA(3) treatment, we investigated the metabolomes of its rachises, clusters, and berries, 6 h and 24 h after the treatment. Metabolite profiling using non-targeted metabolomics approach revealed several metabolites, including arginine, proline, tyrosine, kaempferol, resveratrol, catechin, and so on as possible biomarkers of GA(3) treatment in grapes. GA(3) treatment greatly impacted the alanine, aspartate, and glutamate metabolism pathways, and the GA(3)-mediated alterations in the levels of certain plant growth regulators and primary metabolites were in accordance with important growth and developmental processes in grapes. This study highlights the effect of GA(3) on the profiles of certain polyphenols impacting the flavone and flavonol biosynthesis pathways and hence the nutritional aspect of grapes. The results of this study would be useful to develop self-elongating varieties simplifying the grape cultivation.

}, keywords = {Biosynthetic pathways, GA(3) response, GA(3) signaling, Sultana grapes, Untargeted metabolomics}, issn = {0721-7595}, doi = {10.1007/s00344-020-10102-7, Early Access Date = MAR 2020}, author = {Jadhav, Uma and Mundhe, Swapnil and Kumar, Yashwant and Jogaiah, Satisha and Upadhyay, Anuradha and Gupta, Vidya S. and Kadoo, Narendra Y.} }