Department of Microbiology and Immunology, Dalhousie University, Halifax, NS B3H 4R2, Canada.
Acadian Seaplants Limited, 30 Brown Avenue, Dartmouth, NS B3B 1X8, Canada.
Mar Drugs. 2018 Jun 28;16(7):221. doi: 10.3390/md16070221.
Insects and pathogenic infections (bacteria, viruses and fungi) cause huge losses in agriculturally important crops yearly. Due to the rise in pesticide and antibiotic resistance, our crops and livestock are increasingly at risk. There is a rising demand for environmentally friendly solutions to prevent crop decreases. Components of seaweed extracts were recently found to boost plant immunity. The stimulatory activities of the marine alga-derived extract (Stella Maris) were investigated in a broad range of immune assays. Elevated hydrogen peroxide production measured in a chemiluminescence assay suggested that the extract elicited a strong burst of reactive oxygen species. seedlings treated with Stella Maris activated the expression of , and genes, the induction of which represent early, mid and late plant immune response, respectively. Finally, this study found that Stella Maris inhibited the growth of multiple bacterial pathogens, including an opportunistic human pathogen that has demonstrated pathogenicity in plants. In summary, the pre-treatment with the seaweed extract protected against subsequent infection by these pathogens.
昆虫和病原性感染（细菌、病毒和真菌）每年都会给农业中重要的作物造成巨大损失。由于杀虫剂和抗生素耐药性的增加，我们的作物和牲畜面临的风险越来越大。人们越来越需要环保的解决方案来防止作物减产。最近发现海藻提取物的成分可以增强植物的免疫力。本研究采用多种免疫检测方法研究了海洋藻类提取物（Stella Maris）的刺激活性。化学发光测定法中过氧化氢产量的升高表明，该提取物引发了强烈的活性氧爆发。用 Stella Maris 处理的幼苗激活了 、 和 基因的表达，诱导分别代表植物免疫反应的早期、中期和晚期。最后，这项研究发现 Stella Maris 抑制了多种细菌病原体的生长，包括一种已在植物中表现出致病性的机会性病原体。总之，海藻提取物的预处理保护了 免受这些病原体随后的感染。
