Márquez Robert, Blanco Erika Lorena, Aranguren Yani
Laboratorio de Fitobiotecnología, Departamento de Biología, Facultad de Ciencias, Universidad de Los Andes, Mérida, Venezuela.
Laboratorio de Investigación en Biotecnología y Química de Polímeros, Decanato de Investigación, Universidad Nacional Experimental del Táchira, San Cristóbal, Venezuela.
Saudi J Biol Sci. 2020 Aug;27(8):1913-1922. doi: 10.1016/j.sjbs.2020.06.015. Epub 2020 Jun 16.
Certain soil bacteria produce beneficial effects on the growth and health of plants; hence, their use is steadily increasing. Five strains of with plant growth-promoting potential were selected in this study, which produced indole-3-acetic acid levels below 50 µg.mL. On the other hand, while only strains M8 and M15 dissolved phosphorus, the latter was the only strain that did not produce siderophores. Only strains M8 and M16 significantly inhibited the growth of and phytopathogens, whose inhibition ranges fluctuated between 60% and 63% for strains M8 and M16 against . and between 40% and 53% for strains M8 and M16 against . . Based on these results, the need to implement resistance induction against gray mold on pepper plants was determined using strains M8 and M16. In this case, strain M16 inhibited the propagation of the necrotic spot by approximately 70%, whereas strain M8 significantly reduced the superoxide dismutase activity in systemic leaves, which substantially increased in plants inoculated with strain M8 and infected with the pathogen. Accordingly, the use of native rhizobacteria may entail biotechnological progress for the integrated management of crops in agriculture industry.
某些土壤细菌对植物的生长和健康具有有益影响；因此，它们的应用正在稳步增加。本研究选择了五株具有促进植物生长潜力的菌株，其吲哚 - 3 - 乙酸水平低于50μg.mL。另一方面，虽然只有菌株M8和M15能溶解磷，但后者是唯一不产生铁载体的菌株。只有菌株M8和M16能显著抑制葡萄孢属和疫霉属植物病原体的生长，M8和M16对葡萄孢属的抑制范围在60%至63%之间，对疫霉属的抑制范围在40%至53%之间。基于这些结果，确定使用菌株M8和M16对辣椒植株进行抗灰霉病诱导。在这种情况下，菌株M16抑制坏死斑的传播约70%，而菌株M8显著降低了系统叶片中的超氧化物歧化酶活性，在用菌株M8接种并感染病原体的植物中该酶活性大幅增加。因此，使用本地根际细菌可能会推动农业产业中作物综合管理的生物技术进步。
