外源褪黑素缓解镉胁迫下薄荷生长受损：《科学报告》最高镉浓度下150微摩尔处理使地上部干重增115.20%，11月13日刊出
《科学报告》于 2026 年 11 月 13 日刊出外源褪黑素对镉胁迫下薄荷影响的研究。论文由 Shamsabadi、Moradi、Mirzaei 等人发表，数字对象标识符为 10.1038/s41598-026-79494-y，2026 年 9 月 6 日收稿、10 月 31 日接受。
实验采用完全随机设计的析因试验，设氯化镉 0、75 与 150 毫克每升三档处理与褪黑素 0、75 与 150 微摩尔三档水平，各三次重复；氯化镉经灌溉水供给，褪黑素为叶面施用。
结果显示，镉胁迫加重使地上部干重下降 27.64% 至 46.64%、精油百分比下降 20.32% 至 36.36%、株高下降 31.70% 至 43.16%，并降低光合色素与水分利用效率、提高叶片镉浓度。施用 75 与 150 微摩尔褪黑素显著缓解这些负面影响，地上部干重提高 67.98% 至 96.84%，精油百分比提高 60.78% 至 85.29%。
在最高氯化镉浓度 150 毫克每升下，叶面施用 150 微摩尔褪黑素使地上部干重与精油百分比较未施褪黑素的对应处理分别提高 115.20% 与 111.43%。镉与褪黑素的交互作用对地上部干重、精油百分比、株高与水分利用效率等指标显著。
（来源：《科学报告》）
Exogenous Melatonin Eases Cadmium Damage in Peppermint: At the Highest Cadmium Level, 150 Micromolar Melatonin Raised Shoot Dry Weight by 115.20 Percent in Scientific Reports, Published November 13
Scientific Reports published a study of exogenous melatonin in peppermint under cadmium stress on November 13, 2026. The paper, by Shamsabadi, Moradi, Mirzaei and co-authors, carries digital object identifier 10.1038/s41598-026-79494-y, was received on September 6, 2026 and accepted on October 31, 2026. The factorial experiment, based on a completely randomized design with three replications, used three cadmium chloride treatments of 0, 75 and 150 milligrams per litre and three melatonin levels of 0, 75 and 150 micromolar. Cadmium chloride was supplied through irrigation water, whereas melatonin was applied foliarly. Increasing cadmium stress progressively reduced shoot dry weight by 27.64 to 46.64 percent, essential oil percentage by 20.32 to 36.36 percent and plant height by 31.70 to 43.16 percent, while raising leaf cadmium concentration. Melatonin at 75 and 150 micromolar significantly alleviated these effects, increasing shoot dry weight by 67.98 to 96.84 percent and essential oil percentage by 60.78 to 85.29 percent. Under the highest cadmium chloride concentration of 150 milligrams per litre, foliar application of 150 micromolar melatonin increased shoot dry weight and essential oil percentage by 115.20 percent and 111.43 percent, respectively, compared with the corresponding treatment without melatonin. The cadmium by melatonin interaction was significant for shoot dry weight, essential oil percentage, plant height and water use efficiency, among other traits.
(Source: Scientific)
来源：《科学报告》
发布：GSM·美国（发布链接）
图片来源：图：一株薄荷的植株与叶片。Kızıl，CC BY-SA 4.0，经 Wikimedia Commons。 / Photo: Kızıl, CC BY-SA 4.0, via Wikimedia Commons.
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