The role of endophytic Penicillium species in suppressing the root-rotting fungi of sunflower
کد مقاله : 1046-11THCBIOCONTROL (R3)
نازیار زندیاوری *
گروه بیماری شناسی گیاهی، دانشکده کشاورزی و منابع طبیعی، دانشگاه آزاد علوم و تحقیقات تهران
چکیده مقاله:
Plants have a complex relationship with microorganisms, which can be beneficial or harmful. Although some microorganisms, such as endophytes, are known to be beneficial, their mechanisms have not yet been fully understood and studied. Meanwhile, micro-fungi, particularly those from the Penicillium genus, have been a source of novel and pharmacologically active compounds for several years. In this study, endophytic Penicillium species from 50 out of 100 plant samples, including the root, stem, and leaves were isolated. The identified species were P. citrinum, P. javanicum, P. lilacinum, P. restrictum, and P. thomii. In a dual culture plate experiment, all 50 isolates of Penicillium inhibited four fungi, including Fusarium oxysporum, F. solani, Rhizoctonia solani, and Macrophomina phaseolina, by producing a zone of inhibition. The cell-free culture filtrate also showed strong antifungal activity at higher dosages. The study found that P. citrinum, P. javanicum, and P. lilacinum were the most effective species in inhibiting F. oxysporum, while P. lilacinum and P. restrictum were better at controlling the growth of Macrophomina phaseolina. Additionally, P. citrinum and P. lilacinum were found to be the best species in managing F. solani and Rhizoctonia solani. In the laboratory’s experiments, most of the isolates significantly suppressed root-rotting fungi and improved the growth of sunflowers when applied alone or in soil.
کلیدواژه ها:
Endophytes, Penicillium, Antifungal, root-rotting fungi, Sunflower
وضعیت : چکیده برای ارائه به صورت پوستر پذیرفته شده است