ب- التسميد الحيوي وتحفيز الوسائل الدفاعية لدى النبات Biofertilization and stimulation of plant defense mechanisms
ت - تغيير الوسط الحيوي لبيئة الجذور Rhizosphere modification
ث - التضاد مع الفطريات الاخرى Antibiosis
ج- التطفل Mycoparasitism
ح- تعطيل عمل أنزيمات الممرض Inactivation of the pathogen’s enzymes
ثالثا : محفز لنمو النبات
رابعا : مصدر لنقل الجينات
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