Aguilera Narciso, Guedes Lubia M, Alvarado Ulises, Sáez-Carrillo Katia
Laboratorio de Semioquímica Aplicada, Departamento de Silvicultura, Facultad de Ciencias Forestales, Universidad de Concepción, Casilla 160-C, Concepción 4030000, CP, Chile.
Departamento de Estadística, Facultad de Ciencias Físicas y Matemáticas, Universidad de Concepción, Casilla 160-C, Concepción 4030000, CP, Chile.
Plants (Basel). 2023 Sep 28;12(19):3419. doi: 10.3390/plants12193419.
is highly invasive in several countries around the world. This species pressurizes and displaces several native and endemic tree species in south-central Chile such as , the native species of greatest timber interest. We determined the effects induced by allelochemical stress of on germination and initial growth. Germination was evaluated under in vitro conditions and in natural substrate obtained from sites inhabited by and from nearby areas invaded by . Controls irrigated with tap water and treatments with aqueous extracts of aerial organs of the invasive species were used. Morphometric and morphological variables were evaluated, and the composition of alkaloids and phenols from the plant organs used for the aqueous extracts was determined. The substrates were also chemically characterized. Allelochemicals synthesized by caused germination and growth inhibition and tissue-level alterations, as well as leaf and root damage in obliqua seedlings. In the aerial organs of , the quinolizidine alkaloids aphylline, caulophylline, anagyrine, and sophocarpine were mainly detected. In addition, 21 phenolic compounds were identified, including gallic acid, vanillic acid, chlorogenic acid, p-coumaric acid, and quercetin. The phytotoxic potential of can compromise the natural multiplication of and its survival from its first phenological stages. This interdisciplinary study model facilitated the clarification of the plant-plant relationship mediated by allelochemicals. The model can be replicated to investigate other interspecific interactions between invasive and native species.
在世界上的几个国家具有高度入侵性。该物种对智利中南部的几种本土和特有树种施加压力并将其取代，例如，这是最具木材价值的本土物种。我们确定了[物种名称]的化感胁迫对[目标物种名称]种子萌发和初期生长的影响。在体外条件下以及从[物种名称]栖息的地点和附近被[物种名称]入侵的地区获取的天然基质中评估种子萌发情况。使用用自来水灌溉的对照组以及用入侵物种地上器官的水提取物处理的组。评估了形态计量和形态学变量，并确定了用于水提取物的植物器官中生物碱和酚类的成分。还对基质进行了化学表征。[物种名称]合成的化感物质导致[目标物种名称]种子萌发和生长受到抑制、组织水平改变以及叶片和根系受损。在[物种名称]的地上器官中，主要检测到喹诺里西啶生物碱阿菲林、白屈菜碱、野靛碱和槐果碱。此外，还鉴定出21种酚类化合物，包括没食子酸、香草酸、绿原酸、对香豆酸和槲皮素。[物种名称]的植物毒性潜力可能会影响[目标物种名称]的自然繁殖及其从最初物候阶段开始的存活。这种跨学科研究模型有助于阐明由化感物质介导的植物 - 植物关系。该模型可以复制以研究入侵物种和本土物种之间的其他种间相互作用。
