Effect of exogenous methyl jasmonate on physiological and carotenoid composition of yellow maize sprouts under NaCl stress. (1st November 2021)

• Record Type: Journal Article
• Authors: He, Weiwei; Luo, Hao; Xu, Hao; Zhou, Zhiyi; Li, Dajing; Bao, Yihong; Fu, Qun; Song, Jiangfeng; Jiao, Yan; Zhang, Zhongyuan
• Is Part Of: Food chemistry. Volume 361(2021)
• Publication Date: 2021-11-01
• Subjects: Methyl jasmonate -- Carotenoids -- Yellow maize sprouts -- Antioxidant capacity -- NaCl stress; Food -- Analysis -- Periodicals; Food -- Composition -- Periodicals; 664
• DOI: 10.1016/j.foodchem.2021.130177
• Languages: English
• ISSNs: 0308-8146

Abstract

Highlights: Exogenous MeJA treatment induced higher content of most carotenoids profiles. Exogenous MeJA treatment could alleviate the harmful effect caused by NaCl stress. Exogenous MeJA treatment boosted the antioxidant levels in maize sprouts. Addition of MeJA up-regulated the expression levels of key carotenogenic genes. Abstract: Carotenoid content in maize sprouts can be increased by NaCl stress, although high NaCl concentrations negatively impact plant growth. The effects of exogenous methyl jasmonate (MeJA) on contents of carotenoid and antioxidant capacity of yellow maize sprouts under NaCl stress were investigated. Our results showed that treatments of NaCl both alone and combined with MeJA enhanced the carotenoid accumulation in maize sprouts. Moreover, the carotenoid biosynthesis related genes showed different expression patterns under addition of MeJA treatment. Additionally, the combined treatment led to significantly higher content of most carotenoids profiles and the addition of MeJA could alleviate the harmful effect caused by NaCl stress. Furthermore, the combined treatment improved antioxidant enzyme activities and radical scavenging capacity. The results implied that MeJA is kind of effective plant growth regulator for enhancing carotenoid accumulation in maize sprouts by up-regulating the expression levels of key genes involved in carotenoid biosynthetic pathway.