Liquiritoside Alleviated Pb Induced Stress in Brassica rapa subsp. Parachinensis: Modulations in Glucosinolate Content and Some Physiochemical Attributes.

Waheed Akram,Guihua Li,Nasim Ahmad Yasin,Anis Ali Shah,Waheed Ullah Khan

doi:10.3389/fpls.2021.722498

Abstract

Current research was conducted to explore the effects of liquiritoside on the growth and physiochemical features of Chinese flowering cabbage (Brassica rapa subsp. parachinensis) under lead (Pb) stress. Lead stressed B. rapa plants exhibited decreased growth parameters, chlorophyll, and carotenoid contents. Moreover, Pb toxicity escalated the synthesis of malondialdehyde (MDA), hydrogen peroxide (H2O2), flavonoids, phenolics, and proline in treated plants. Nevertheless, foliar application of liquiritoside mitigated Pb toxicity by decreasing oxidative stress by reducing cysteine, H2O2, and MDA contents in applied plants. Liquiritoside significantly increased plant height, shoot fresh weight and dry weight, number of leaves, and marketable value of Chinese flowering cabbage plants exposed to Pb toxicity. This biotic elicitor also enhanced the proline, glutathione, total phenolics, and flavonoid contents in Chinese flowering cabbage plants exposed to Pb stress compared with the control. Additionally, total glucosinolate content, phytochelatins (PCs), and non-protein thiols were effectively increased in plants grown under Pb regimes compared with the control plants. Overall, foliar application of liquiritoside can markedly alleviate Pb stress by restricting Pb translocation in Chinese flowering cabbage.

Highlights

Vegetables belonging to the Brassicaceae family show cherished health remunerations effects owing to the existence of biologically active and robust antioxidative ingredients
Influence of Liquiritoside on Plant Height, Number of Leaves, Root Biomass, Shoot Biomass, and Marketable Value of Chinese Flowering Cabbage Subjected to Pb Stress
Liquiritoside (1 g/L) supplementation significantly improved the chlorophyll a and b and carotenoids levels of plants exposed to Pb stress compared with relevant control

Summary

Introduction

Vegetables belonging to the Brassicaceae family show cherished health remunerations effects owing to the existence of biologically active and robust antioxidative ingredients. Parachinensis) is an annual cole crop belonging to the Brassicaceae family. The germination to harvest period of this vegetable is less than 60 days (Peng et al, 2015). Chinese flowering cabbage has valuable biological and nutritional properties (Aixia et al, 2015). Its above-ground parts, including leaves, stem, and inflorescence, can be cooked or consumed raw as salads. Its leaves contain adequate amounts of glucosinolates and polyphenolic compounds

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