بررسی تاثیر اندوفیت شدن دو گونه Beauveria بر فاکتورهای رشدی و برخی فعالیت‎های بیوشیمیایی لوبیا

Beans is one of the most important sources of protein in the food chain of humans and animals all over the world. Common bean (Phaseolus vulgaris L.) is the major legume crop which having an 85% share in worldwide bean production. A major concern for the scientific community is to provide new strategies to guarantee food security plus the safety of agricultural products as well as applications to reduce chemical pesticides and fertilizers. Among the explored alternatives, the use of beneficial microorganisms is one of the main pillars to provide a green turn in agriculture systems worldwide. Aim of this study was to assess the endophytic role of native species of Beauveria and its effect on growth parameters and some biochemical factors of bean. For this purpose, spore suspension (1 × 108 ml-1) was prepared from the 10-days culture of the species. After sterilizing the seeds, the spore suspension was added to the soil as a solution at the same time as the seeds were planted. Sampling was performed to determine the presence of fungus in the plant and to measuring growth factors and some biochemical activities, until 25 days after inoculation. The results showed that the fungal species were established as endophyte in different parts of beans. Analysis of data related to growth parameters showed that B. pseudobassiana species increased the dry weight shoot by 165.4%. While B. bassiana species increased 50.5% and 42.5% dry weight and root length respectively. Also, both species significantly increased the amount of chlorophyll, carotenoid, peroxidase and catalase compared with the control treatment. Which proved the ability of Beauveria as plant growth promoter.