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Summary

Gymnemic acid (GA), a well known anti-diabetic compound has been detected in methanol extracts of intact leaves and in vitro callus cultures derived from leaf explants of Gymnema sylvestre. Callus biomass was developed in MS medium with optimum plant growth regulators (OPGRs) of 2,4-D (1.5 mg L−1) + KN (0.5 mg L−1) under abiotic stress conditions at 45 days determined by growth curve analysis. GA detection and quantification were carried out using thin-layer chromatography (TLC), highperformance thin-layer chromatography (HPTLC), high-performance liquid chromatography (HPLC), and gravimetric techniques. GA detection peak area and their absorption spectra were evaluated through HPTLC and HPLC with the standard GA. Quantification of GA had showed the linearity, accuracy, robustness and precision by HPLC. GA content was significantly higher in gravimetric method than HPLC. All these methods were found to be simple, accurate, selective and rapid and could be successfully applied for the determination of GA. It could have potential as a pharmaceutical drug for Type 1 diabetes mellitus (IDDM) and obesity.

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plants to improve abiotic stress tolerance . In: Hasanuzzaman , M. (Ed.), Plant ecophysiology and adaptation under climate change: mechanisms and perspectives II . Springer , Singapore , pp. 477 – 490 . Mozafarian , M. and Kappel , N. ( 2019

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Agrokémia és Talajtan
Authors: R. K. Gangwar, M. Makádi, M. Fuchs, Á. Csorba, E. Michéli, I. Demeter and T. Szegi

microorganisms in adaptation of agriculture crops to abiotic stresses . World Journal of Microbiology and Biotechnology . 27 . 1231 – 1240 . Guangming , L

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, Hancock , J , Harrison , J , Morris , P , Ribeiro , D , Wilson , I 2008 Nitric oxide, stomatal closure and abiotic stress . J Exp Bot 59 : 165 – 176 10.1093/jxb/erm293 . 8. Zottini

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. Changes in the benzoxazinoids composition, even if of minor importance to humans, can severely influence the ecosystem either by destabilizing balance between insects and hosts or by influencing plant resistance to biotic and abiotic stresses. Due to the

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Introduction Table grape production is a rising sector of agriculture with increasing surface, which requires breeding of new cultivars ( FAO-OIV, 2016 ). The most important targets of breeding programs are seedlessness, early ripening, abiotic

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