32P Isotope to Determine the Efficiency of Mycorrhizal Wheat Symbiosis Subjected to Saline Water

• Published in: Communications in Soil Science and Plant Analysis 2013-12, Vol.44 (22), p.3317-3326
• Main Authors: Ardakani, M. R, Rejali, F, Daei, G, Teimuri, S, Fathollahi, H, Miransari, M
• Format: Article
• Language: English
• Subjects: Agronomy. Soil science and plant productions; Arbuscular mycorrhizal species; Biological and medical sciences; Claroideoglomus etunicatum; cultivars; Economic plant physiology; Efficiency; electrical conductivity; Fundamental and applied biological sciences. Psychology; Fungi; genotype; greenhouses; isotopes; P isotope; phosphorus; Saline water; salinity stress; soil; soil labeling; Soil science; Soil sciences; specific activity; Symbiosis; Symbiosis (nodules, symbiotic nitrogen fixation, mycorrhiza...); vesicular arbuscular mycorrhizae; wheat; wheat cultivars
• ISSN: 1532-2416; 0010-3624; 1532-2416; 1532-4133
• DOI: 10.1080/00103624.2013.848284

Phosphorus (P) behavior and its efficiency in mycorrhizal plants are of great importance. The objective was to evaluate the behavior of soil labeled P absorbed by different mycorrhizal wheat genotypes subjected to saline water. Three wheat genotypes including cultivar Kavir, the local cultivar Roshan, and the mutated line Tabasi T-65-7-1 were inoculated with different species of arbuscular mycorrhiza (AM) including Glomus etunicatum, G. mosseae , and G. intraradices . Plants were irrigated using saline water (electrical conductivity of 13.87 dS m ⁻¹). The experiment was a factorial with 12 treatments and three replications under greenhouse conditions. Wheat genotypes and AM species significantly affected plant dry weight, specific activity, and total plant activity (P = 0.01). A maximum of 1.49-fold increase in specific activity or P uptake per gram of plant dry matter and 3.53-fold increase in plant activity or plant total P uptake resulted by G. etunicatum as compared with control.