In recent years the search for beneficial microorganisms that could induce plant growth has increased. Most have been found on crop seeds, soil and on the rhizosphere. In this work, we collected mature seeds of Phaseolus vulgaris var. Pinto Saltillo in Zacatecas, Mexico; and isolated endophytic fungi from these samples. Three different fungal strains were obtained. Sequencing analysis showed that one of the analyzed fungi, Alternaria solani IA300, showed the capacity to promote plant growth. Chili plants (Capsicum annuum cv. Mirasol) were inoculated with Alternaria solani IA300. After 15, 30, 45, and 60 days post-interaction, nine vegetative variables were analyzed (length of the root and aerial parts; weight of the root and aerial parts; number of leaves, flowers and fruits; as well as the dry weight from the root and aerial parts). Results showed that Alternaria solani IA300 can promote growth in chili pepper plants at later times of interaction (45 and 60 days post interaction), where most of the vegetative variables analyzed showed an increase in relation to control plants. To our knowledge, this is the first report where Alternaria solani IA300 induces growth and development in plants.

近年来，对可以诱导植物生长的有益微生物的搜索有所增加。大多数发现于农作物种子，土壤和根际上。在这项工作中，我们收集了菜豆的成熟种子。墨西哥萨卡特卡斯的Pinto Saltillo；并从这些样品中分离出内生真菌。获得了三种不同的真菌菌株。测序分析表明，一种被分析的真菌，Alternaria solani IA300，具有促进植物生长的能力。辣椒植物（Capsicum annuum cv。Mirasol）接种了Alternaria solaniIA300。互动后15、30、45和60天后，分析了9个营养变量（根和气生部分的长度；根和气生部分的重量；叶子，花朵和果实的数量；以及干重）从根和空中部分）。结果表明，链格孢菌IA300在交互作用后期（交互作用后45天和60天）可以促进辣椒植物的生长，其中分析的大多数营养变量均比对照植物增加。据我们所知，这是第一份报道了链格孢菌IA300诱导植物生长发育的报告。