Allelochemicals Identified From Sweet Potato (Ipomoea batatas) and Their Allelopathic Effects on Invasive Alien Plants.
Allelochemicals Identified From Sweet Potato (Ipomoea batatas) and Their Allelopathic Effects on Invasive Alien Plants.
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DOI：
10.3389/fpls.2022.823947
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发表时间：
2022
影响因子：
5.6
通讯作者：
中科院分区：
文献类型：
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甘薯[Ipomoea batatas（L.）Lam]是世界范围内重要的经济作物和粮食作物，并已被证明对其他植物表现出化感作用。然而，其代谢组尚未得到广泛的研究，特别是在植物毒性生物活性次级产物的生产方面。本研究对甘薯石油醚提取物的化学成分进行了表征，并研究了其对4种外来入侵杂草三叶鬼针草的形态和生理效应。小花野芝麻，多花黑麦草，和小笔草（Phalaris minor Retz.）测定了GS-MS共鉴定出21种成分，占甘薯石油醚提取物的96.08%。主要成分为棕榈酸（PA）（17.48%）、亚油酸乙酯（EL）（13.19%）、亚油酸（LA）（12.55%）、棕榈酸乙酯（EP）（11.77%）、亚麻酸乙酯（ELL）（8.29%）、油酸（5.82%）、硬脂酸乙酯（4.19%）和间甲酚乙酸酯（3.19%）。五个最丰富的化合物表现出较强的抑制活性对四种入侵杂草测试。LA的抑制率最高，其次是PA和EP。过氧化氢酶（CAT）、丙二醛（MDA）和过氧化物酶（POD）含量。三种化感物质，即，超氧化物歧化酶（SOD）、叶绿素a和叶绿素b含量下降。总的来说，所有五种化合物的综合影响可能在抑制令人担忧的入侵杂草方面非常有效。
Sweet potato [Ipomoea batatas (L.) Lam] is grown as important cash and food crop worldwide and has been shown to exhibit allelopathic effects on other plants. However, its metabolome has not been studied extensively, particularly with respect to the production of phytotoxic bioactive secondary products. In this study, the chemical composition of petroleum ether extract of sweet potato was characterized, and the morphological and physiological effects of some individual components against four invasive alien weeds Bidens pilosa L., Galinsoga parviflora Cav., Lolium multiflorum Lam., and Phalaris minor Retz. were determined. Twenty-one components were identified by GS-MS, constituting 96.08% of petroleum ether extract in sweet potato. The major components were palmitic acid (PA) (17.48%), ethyl linoleate (EL) (13.19%), linoleic acid (LA) (12.55%), ethyl palmitate (EP) (11.77%), ethyl linolenate (ELL) (8.29%) oleic acid (5.82%), ethyl stearate (4.19%), and 3-methylphenol acetate (3.19%). The five most abundant compounds exhibited strong inhibition activity against the four invasive weeds tested. The highest inhibition rates were seen for LA, followed by PA and EP, respectively. Catalase (CAT), malondialdehyde (MDA), and peroxidase (POD) content of L. multiflorum were increased by the three allelochemicals, i.e., LA, PA and EP, but superoxide dismutase (SOD), chlorophyll-a and chlorophyll-b levels declined. Overall, the combined impact of all five compounds could be quite effective in suppressing the invasive weeds of concern.
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影响因子：
4.4
作者：
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作者：
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