title: Combined inoculation with Glomus intraradices and Rhizobium tropici CIAT899 increases phosphorus use efficiency for symbiotic nitrogen fixation in common bean (Phaseolus vulgaris L.).
abstract: This study compared the response of common bean (Phaseolus vulgaris L.) to arbuscular mycorrhizal fungi (AMF) and rhizobia strain inoculation. Two common bean genotypes i.e. CocoT and Flamingo varying in their effectiveness for nitrogen fixation were inoculated with Glomus intraradices and Rhizobium tropici CIAT899, and grown for 50 days in soil-sand substrate in glasshouse conditions. Inoculation of common bean plants with the AM fungi resulted in a significant increase in nodulation compared to plants without inoculation. The combined inoculation of AM fungi and rhizobia significantly increased various plant growth parameters compared to simple inoculated plants. In addition, the combined inoculation of AM fungi and rhizobia resulted in significantly higher nitrogen and phosphorus accumulation in the shoots of common bean plants and improved phosphorus use efficiency compared with their controls, which were not dually inoculated. It is concluded that inoculation with rhizobia and arbuscular mycorrhizal fungi could improve the efficiency in phosphorus use for symbiotic nitrogen fixation especially under phosphorus deficiency.
authors: INRA, UMR Eco&Sols, Place Viala, 34060 Montpellier Cedex 01, France ; Ecole Supérieure d'Agriculture de Mateur, Bizerte 7030, Tunisia ; Faculté des Sciences de Gafsa, 2112 Sidi Ahmed Zarroug, Tunisia.
authors: Fatma
authors: F
authors: Tajini
authors: Mustapha
authors: M
authors: Trabelsi
authors: Jean-Jacques
authors: JJ
authors: Drevon
keywords: Arbuscular mycorrhizal fungi; Glomus intraradices; Nitrogen fixation; Phaseolus vulgaris; Phosphorus; Rhizobia; Symbiosis
references: Ann Bot. 2004 Aug;94(2):251-8
references: 15205177
references: J Biol Chem. 1953 Jun;202(2):675-85
references: 13061491
references: New Phytol. 1990 Jul;115(3):495-501
references: 33874272
references: FEMS Microbiol Ecol. 2002 Jun 1;40(3):223-31
references: 19709230
references: BMC Plant Biol. 2009 Jun 17;9:73
references: 19534785
references: Mycorrhiza. 2005 Dec;16(1):61-66
references: 16133255
references: Mycorrhiza. 2002 Oct;12(5):225-34
references: 12375133
references: New Phytol. 2002 Nov;156(2):142-144
references: 33873270
references: Trends Plant Sci. 2005 Jan;10(1):22-9
references: 15642520
references: Environ Microbiol. 2006 Jan;8(1):1-10
references: 16343316
references: New Phytol. 2006;172(4):732-8
references: 17096798
references: Antonie Van Leeuwenhoek. 2002 Aug;81(1-4):343-51
references: 12448732
references: Mycorrhiza. 2011 Apr;21(3):173-81
references: 20544230
references: J Plant Physiol. 2010 May 15;167(8):614-9
references: 20044167