caa a22 4500 605518068 CHVBK 20210128100723.0 cr unu---uuuuu 210128e20150401xx s 000 0 eng 10.1007/s00572-014-0603-6 doi (NATIONALLICENCE)springer-10.1007/s00572-014-0603-6 Inoculation of drought-stressed strawberry with a mixed inoculum of two arbuscular mycorrhizal fungi: effects on population dynamics of fungal species in roots and consequential plant tolerance to water deficiency [Elektronische Daten] [Louisa Boyer, Philip Brain, Xiang-Ming Xu, Peter Jeffries] The effect of inoculation with two arbuscular mycorrhizal fungi (AMF) on growth and drought tolerance of cultivated strawberry (Fragaria × ananassa) was studied. Three treatments (a single treatment either of Funneliformis mosseae BEG25, Funneliformis geosporus BEG11 or a 50:50 mixed inoculation treatment of both species) were compared to uninoculated plants. Species-specific primers for qPCR quantification of F. geosporus and F. mosseae DNA were developed to quantify the relative abundance of each fungus in roots of strawberry under different conditions of water stress. Co-occupation of the same root by both species was shown to commonly occur, but their relative abundance varied with water stress (reduced irrigation of up to 40%). Greater root colonisation was observed microscopically under water stress, but this increased colonisation was often accompanied with decreased amounts of fungal DNA in the root. F. mosseae tended to become more abundant under water stress relative to F. geosporus. There was significant correlation in the fungal colonisation measurements from the microscopic and qPCR methods under some conditions, but the nature of this relationship varied greatly with AMF inoculum and abiotic conditions. Single-species inoculation treatments gave similar benefits to the host to the mixed inoculation treatment regardless of irrigation regime; here, amount of colonisation was of greater importance than functional diversity. The addition of AMF inocula to plants subjected to reduced irrigation restored plant growth to the same or higher values as the non-mycorrhizal, fully-watered plants. The water use efficiency of plants was greater under the regulated deficit irrigation (RDI) regime and in AMF-inoculated plants, but there were no significant differences between plants inoculated with the single or combined inoculum. This study demonstrated that the increase in plant growth was directly influenced by an increase in root colonisation by AMF when individual plants were examined. Springer-Verlag Berlin Heidelberg, 2014 Arbuscular mycorrhiza nationallicence Co-occurring fungal species nationallicence Competition nationallicence Strawberry nationallicence Water stress nationallicence Water use efficiency nationallicence Boyer Louisa Kent Fungal Group, School of Biosciences, University of Kent, CT2 7NJ, Canterbury, Kent, UK aut Brain Philip Genetics and Crop Improvement Programme, East Malling Research, New Road, ME19 6BJ, East Malling, UK aut Xu Xiang-Ming Genetics and Crop Improvement Programme, East Malling Research, New Road, ME19 6BJ, East Malling, UK aut Jeffries Peter Kent Fungal Group, School of Biosciences, University of Kent, CT2 7NJ, Canterbury, Kent, UK aut Mycorrhiza Springer Berlin Heidelberg 25/3(2015-04-01), 215-227 0940-6360 25:3<215 2015 25 572 https://doi.org/10.1007/s00572-014-0603-6 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s00572-014-0603-6 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Boyer Louisa Kent Fungal Group, School of Biosciences, University of Kent, CT2 7NJ, Canterbury, Kent, UK aut NATIONALLICENCE 700 1- Brain Philip Genetics and Crop Improvement Programme, East Malling Research, New Road, ME19 6BJ, East Malling, UK aut NATIONALLICENCE 700 1- Xu Xiang-Ming Genetics and Crop Improvement Programme, East Malling Research, New Road, ME19 6BJ, East Malling, UK aut NATIONALLICENCE 700 1- Jeffries Peter Kent Fungal Group, School of Biosciences, University of Kent, CT2 7NJ, Canterbury, Kent, UK aut NATIONALLICENCE 773 0- Mycorrhiza Springer Berlin Heidelberg 25/3(2015-04-01), 215-227 0940-6360 25:3<215 2015 25 572