Influence of colonization by arbuscular mycorrhizal fungi on three strawberry cultivars under salty conditions
Sinclair, G.; Charest, C.; Dalpe, Y.; Khanizadeh, S.
Agricultural and Food Science 23(2): 146-158
ISSN/ISBN: 1459-6067 Accession: 070720423
Plant adaptation to hyperosmotic environments is generally associated with reduced growth and ultimately yield loss, making farming difficult. The potential of mycorrhizal symbioses to alleviate salt stress has been documented and benefits to plant revealed to be specific and dependent to both plant cultivars and fungal strains. A factorial greenhouse experiment was performed to determine the effects of three arbuscular mycorrhizal fungi (AMF) species (Funneliformis caledonius, F. mosseae and Rhizophagus irregularis) on three 'day-neutral' strawberry (Fragaria x ananassa Duch.) cultivars ('Albion', 'Charlotte' and 'Seascape'), and a mixture of R. irregularis and F. mosseae on 'Seascape', under four salt conditions (0-200 mM NaCl). The overall results showed that plant biomass decreased with increasing salinity. The cultivars responded differently to both AMF and salinity, and 'Seascape' was more tolerant to salinity than the other cultivars. AMF enhanced plant growth and improved salt tolerance by increasing the proportion of medium (0.5