Isolation and identification of salinity and drought tolerant bacteria from Jiroft agricultural fields

Journal of plant ecophysiology

مقالات آماده انتشار، پذیرفته شده، انتشار آنلاین از تاریخ 15 دی 1402

نوع مقاله: Original Article

نویسنده

Zeinab Fotoohiyan^*

FACULTY MEMBER

چکیده

One of the new ways to cope with salinity and reduce its harmful effects is to introduce salt-tolerant bacteria. In this research, indigenous bacteria resistant to salinity and drought were isolated and identified. The growth rate of isolates at different concentrations of salinity (5%, 10%, 15%, 20%, 25%, 35% and 40%), drought(0.50, -0.15, -0.03, -0.49 and -0.73 MPa), pH and 50°C. Then, the production of Auxin, Siderophore, hydrogen cyanide and phosphate solubility were investigated. A total of 42 soil samples were collected, 50 bacteria were obtained. The K4, K10, K12, K14, K15 codes for the Konar-sandal, C18, C10, C11 codes for Karim-abad, A2, A3, A4 codes for Anbar-abad were resistant to salinity. Also, the K4, K14, K15, C8 codes had the ability to grow in water potential at -0.73. The C8 and K4 isolates had the ability to grow at high pH and 50°C. Also, isolate C8 produced the highest amount of Auxin (1.8 μg/ml) and it was the only isolate that dissolved phosphate. The isolates C8 and K14 had the ability to produce Siderophore. Therefore, C8 isolate was Bacillus subtilis as the superior isolate.

کلیدواژه‌ها

Drought؛ Jiroft؛ Identification؛ Resistant bacteria and Salinity