Is it possible to alleviate biotic and abiotic stresses in tomatoes by Plant Probiotic-Bacillus velezensis UTB96?
کد مقاله : 1005-11THCBIOCONTROL (R2)
اکرم شانقی *1، سمیه رحیمی کلده2، مسعود احمدزاده3
1گروه بیماری شناسی گیاهی، دانشکدگان کشاورزی و منابع طبیعی، دانشگاه تهران، کرج، ایران
2گروه گیاهپزشکی دانشکدگان کشاورزی و منابع طبیعی دانشگاه تهران کارشناس فنی و مدیر منطقه ای مارکتینگ شرکت فن آوری زیستی طبیعت گرا
3گروه گیاهپزشکی، دانشکدگان کشاورزی و منابع طبیعی دانشگاه تهران، کرج، ایران
چکیده مقاله:
Behavior and survival of soil-borne pathogens like Fusarium oxysporum f. sp. lycopersici is affected by soil salinity. Therefore, salinity could be an important factor in the increasing disease incidence in crops such as tomatoes. However, plant growth-promoting bacteria can improve plant growth in saline soil. This research was carried out with the aim of controlling the Fusarium wilt disease in tomatoes under salinity stress by using Bacillus velezensis UTB96. We investigated the effect of saline stress on FOL behavior and survival at 75 mmol NaCl. Moreover, the inhibition effect of B. velezensis UTB96 on Fusarium wilt disease was investigated in laboratory and greenhouse conditions. The results showed that saline stress positively affected fungal biomass and sporulation, but it did not affect radial growth. In greenhouse conditions, Disease Index (DI) of Fusarium wilt disease increased by 12% in the presence of 75 mmol NaCl compared to control plants. Application of B. velezensis UTB96 reduced DI in tomato plants to the extent of 48% under saline stress as compared to 68% in control treatment (no saline condition). The present study demonstrates, saline stress positively affects FOl behavior and pathogenicity, and B. velezensis UTB 96 has the ability to improve Tomatoes' health against Fusarium wilt disease under salinity stress.
کلیدواژه ها:
Bacillus velezensis, Fusarium oxysporum, abiotic and biotic stresses, biological control
وضعیت : چکیده برای ارائه به صورت پوستر پذیرفته شده است