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Acta Prataculturae Sinica ›› 2014, Vol. 23 ›› Issue (4): 195-203.DOI: 10.11686/cyxb20140424

• Orginal Article • Previous Articles     Next Articles

Effects of arbuscular mycorrhizal fungus Glomus mosseae on the growth characteristics of Festuca arundinacea under salt stress conditions

YANG Hai-xia1,2,LIU Run-jin1,GUO Shao-xia1,2   

  1. 1.Institute of Mycorrhizal Biotechnology,Qingdao Agricultural University,Qingdao 266109,China;
    2.College of Landscape Architecture and Forestry,Qingdao Agricultural University,Qingdao 266109,China
  • Received:2014-04-21 Online:2014-08-20 Published:2014-08-20

Abstract: As the global changes,the soil salinization becomes more and more serious and directly impacts plant growth. Festuca arundinacea is one of important lawn plants influenced with arbuscular mycorrhizal (AM) fungi and soil salinization. So how to improve the salt tolerance of F. arundinacea,is one of the urgent problems to be solved. The purpose of the present research was to evaluate the effects of AM fungi on improving salt tolerance of F. arundinacea,and to explore the mechanism of increasing salt tolerance of F. arundinacea by AM fungi. F. arundinacea seeds were inoculated with AM fungus Glomus mosseae and treated with different NaCl concentration (0%,0.8%,1.2% and 1.6%) under pot conditions in a greenhouse. The activity of antioxidant enzymes (SOD,POD and CAT),contents of antioxidant (AsA),soluble sugar,proline,nutrient elements (N,P,S,Zn,K,Ca and Mg),ABA (abscisic),IPA (isopentenyl adenosine),IAA (indole-3-acetic acid),GA (gibberellin) and K/Na,Mg/Na,Ca/Na increased,in leaves of F. arundinacea plants colonized with G. mosseae,while the content of methane dicarboxylic aldehyde (MDA),Na+ and Cl- decreased,as well as membrane permeability,compared to the noninoculation control. It was concluded that AM fungi could improve plant salt tolerance through improving nutrient absorption,osmotic regulation and the reaction of antioxidant system of plants,maintaining hormonal balance,reducing toxicity of Na+ and Cl- and damage caused by oxidative stress.

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