Abd-ElGawad Ahmed M, Elshamy Abdelsamed I, Al-Rowaily Saud L, El-Amier Yasser A
Plant Production Department, College of Food & Agriculture Sciences, King Saud University, P.O. Box 2460, Riyadh 11451, Saudi Arabia.
Department of Botany, Faculty of Science, Mansoura University, Mansoura 35516, Egypt.
Plants (Basel). 2019 Nov 7;8(11):482. doi: 10.3390/plants8110482.
The variation in habitat has a direct effect on the plants and as a consequence, changes their content of the bioactive constituents and biological activities. The present study aimed to explore the variation in the essential oils (EOs) and phenolics of collected from the coastal and inland habitats. Additionally, we determined their antioxidant and allelopathic activity against the weed, . Fifty-six compounds were identified as overall from EOs, from which 25 components were identified from the coastal sample, and 52 from the inland one. Sesquiterpenes were the main class in both samples (81.67% and 79.28%), while mono (3.99% and 7.21%) and diterpenes (2.9% and 1.77%) represented minors, respectively. Hexahydrofarnesyl acetone, (-)-caryophyllene oxide, farnesyl acetone, humulene oxide, farnesyl acetone C, and nerolidol epoxy acetate were identified as major compounds. The HPLC analysis of MeOH extracts of the two samples showed that chlorogenic acid, rutin, and propyl gallate are major compounds in the coastal sample, while vanilin, quercetin, and 4',7-dihydroxyisoflavone are majors in the inland one. The EOs showed considerable phytotoxicity against with IC value of 2.66, 0.59, and 0.70 mg mL for germination, root, and shoot growth, respectively from the inland sample. While the coastal sample attained the IC values of 1.58, 0.45, and 0.66 mg mL. MeOH extracts revealed stronger antioxidant activity compared to the EOs. Based on IC values, the ascorbic acid revealed 3-fold of the antioxidant compared to the EO of the coastal sample and 4-fold regarding the inland sample. However, the ascorbic acid showed 3-fold of the antioxidant activity of the MeOH extracts of coastal and inland samples. Although is considered as a noxious, invasive plant, the present study revealed that EO and MeOH extracts of the could be considered as promising, eco-friendly, natural resources for antioxidants as well as weed control, particularly against the weed, .
栖息地的变化对植物有直接影响，因此会改变其生物活性成分的含量和生物活性。本研究旨在探究从沿海和内陆栖息地采集的植物精油（EOs）和酚类物质的变化。此外，我们测定了它们对杂草的抗氧化和化感活性。从EOs中总共鉴定出56种化合物，其中沿海样本中鉴定出25种成分，内陆样本中鉴定出52种。倍半萜类是两个样本中的主要类别（分别为81.67%和79.28%），而单萜（分别为3.99%和7.21%）和二萜（分别为2.9%和1.77%）占比较小。六氢法呢基丙酮、（-）-氧化石竹烯、法呢基丙酮、氧化葎草烯、法呢基丙酮C和环氧乙酸橙花叔醇被鉴定为主要化合物。对两个样本的甲醇提取物进行的HPLC分析表明，绿原酸、芦丁和没食子酸丙酯是沿海样本中的主要化合物，而香草醛、槲皮素和4',7-二羟基异黄酮是内陆样本中的主要化合物。EOs对杂草显示出相当大的植物毒性，内陆样本对发芽、根和芽生长的IC值分别为2.66、0.59和0.70 mg/mL。而沿海样本的IC值分别为1.58、0.45和0.66 mg/mL。甲醇提取物显示出比EOs更强的抗氧化活性。基于IC值，抗坏血酸的抗氧化能力是沿海样本EO的3倍，是内陆样本的4倍。然而，抗坏血酸的抗氧化活性是沿海和内陆样本甲醇提取物的3倍。尽管被认为是一种有害的入侵植物，但本研究表明，该植物的EO和甲醇提取物可被视为有前景的、生态友好的天然抗氧化剂资源以及杂草控制剂，特别是针对杂草。
