Piña-Torres Iván Horacio, Dávila-Berumen Fabiola, González-Hernández Gloria Angélica, Torres-Guzmán Juan Carlos, Padilla-Guerrero Israel Enrique
Departamento de Biología, División de Ciencias Naturales y Exactas, Universidad de Guanajuato, Noria Alta s/n, Guanajuato 36050, Mexico.
J Fungi (Basel). 2023 Sep 19;9(9):945. doi: 10.3390/jof9090945.
Beneficial associations are very important for plants and soil-dwelling microorganisms in different ecological niches, where communication by chemical signals is relevant. Among the chemical signals, the release of phytohormones by plants is important to establish beneficial associations with fungi, and a recently described association is that of the entomopathogenic ascomycete fungus with plants. Here, we evaluated the effect of four different phytohormones, synthetic strigolactone (GR24), sorgolactone (SorL), 3-indolacetic acid (IAA) and gibberellic acid (GA), on the fungus strain HA11-2, where the germination rate and hyphal elongation were determined at three different times. All phytohormones had a positive effect on germination, with GA showing the greatest effect, and for hyphal length, on average, the group treated with synthetic strigolactone GR24 showed greater average hyphal length at 10 h of induction. This work expands the knowledge of the effect of phytohormones on the fungus , as possible chemical signals for the rapid establishment of the fungus-plant association.
有益关联对于处于不同生态位的植物和土壤微生物非常重要，在这些生态位中，通过化学信号进行交流至关重要。在化学信号中，植物释放植物激素对于与真菌建立有益关联很重要，并且最近描述了一种昆虫病原子囊菌与植物的关联。在这里，我们评估了四种不同植物激素，即合成独脚金内酯（GR24）、高粱内酯（SorL）、3-吲哚乙酸（IAA）和赤霉素（GA）对真菌菌株HA11-2的影响，在三个不同时间测定了其萌发率和菌丝伸长情况。所有植物激素对萌发均有积极影响，其中GA的影响最大，对于菌丝长度，平均而言，用合成独脚金内酯GR24处理的组在诱导10小时时显示出更大的平均菌丝长度。这项工作扩展了关于植物激素对该真菌影响的知识，植物激素可能是真菌与植物关联快速建立的化学信号。
