Jasmonates (JAs) are a rising class of lipid-derived signalling molecules with varied functions ranging from induction of abiotic and biotic stress-responsive genes to regulation of plant growth and development under natural condition. The rationale of present study was to investigate the nutritional importance of JAs in inducing and triggering accumulation of carbohydrates, sugars, nutritional pigments and vitamins in three varieties of Brassica oleracea L. (variety botrytis, capitata, italica) edible heads. Exogenous application of Jasmonic acid (JA) and methyl ester of Jasmonic acid (Me–JA), made edible heads of var. botrytis, capitata and italica nutritionally more accrete as compared to control untreated edible heads. Results showed that the treatment of JA and Me-JA enhanced growth of edible heads in terms of head diameter, head length, fresh weight, dry weight, moisture content, total protein, total starch, total carbohydrates, total soluble sugar, non-reducing sugar, vitamins C, A, E and B2 in var. botrytis but at the same time dramatic decline in reducing sugar, beta-carotene and lycopene was seen. In var. capitata certain reduction in vitamin E accumulation was recorded by the exogenous application of JA and Me–JA while overall growth of edible heads was accelerated which could also be supported by enhanced nutritional and productivity level. In variety italica, JAs reduced total starch and vitamin C, but overall growth was surged along with productivity. Both JA and Me-JA could be attributed to induce growth and enhance the nutritional potential of edible heads in three varieties of Brassica oleracea as compared to their untreated control edible heads. From the present results, it has been suggested that these two eco-friendly oxylipins can be further explored for enhancing the growth and nutritional value of these vegetables by exogenous application of JAs in μM to pM concentration.

中文翻译：

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茉莉酸诱导芸苔属植物的色素和维生素的生长和调节。头、意大利和贵腐菌可食用头（叶/花序）

茉莉酸 (JA) 是一类新兴的脂质衍生信号分子，具有多种功能，从诱导非生物和生物胁迫响应基因到在自然条件下调节植物生长和发育。本研究的基本原理是研究 JA 在诱导和触发三种 Brassica oleracea L.（品种 botrytis、capitata、italica）食用头中碳水化合物、糖、营养色素和维生素积累方面的营养重要性。外源应用茉莉酸（JA）和茉莉酸甲酯（Me-JA），制成可食用的变种头。与对照未处理的可食用头相比，botrytis、capitata 和 italica 在营养上更多地生长。结果表明，JA 和 Me-JA 的处理促进了食用头部的头部直径、头部长度、鲜重、干重、水分含量、总蛋白质、总淀粉、总碳水化合物、总可溶性糖、非还原糖、维生素 C、A、E 和 B2。葡萄球菌，但同时还原糖、β-胡萝卜素和番茄红素急剧下降。在变种。外源施用 JA 和 Me-JA 记录了 capitat 维生素 E 积累的一定减少，而可食用头的整体生长加速，这也可以通过提高营养和生产力水平来支持。在意大利品种中，JAs 减少了总淀粉和维生素 C，但整体增长随着生产力的提高而激增。与未经处理的对照食用头相比，JA 和 Me-JA 均可归因于诱导生长并增强了三种甘蓝品种的食用头的营养潜力。