Ectomycorrhizal fungus enhances drought tolerance of Pinus sylvestris var.mongolica seedlings and improves soil condition  

作　　者：Dachuan Yin Ruiqing Song Jinyu Qi Xun Deng 

机构地区：[1]College of Forestry,Shenyang Agricultural University,Shenyang 110866,People’s Republic of China [2]College of Forestry,Northeast Forestry University,Harbin 150040,People’s Republic of China [3]Forestry Protection Institute of Heilongjiang Forestry Academy,Harbin 150040,People’s Republic of China

出　　处：《Journal of Forestry Research》2018年第6期1775-1788,共14页林业研究（英文版）

基　　金：supported by the National Natural Science Foundation of China(31670649,31200484,31170597)

摘　　要：Mongolian pine is an important afforestation species widely used for ecological management in northeast China. The environment in this region is very unstable and the flora are regularly subjected to drought stress.This paper reports on the influence of inoculation with the Suillus luteus on seedlings under different water conditions.Both inoculated and non-inoculated ectomycorrhizal fungi(ECMF)-S. luteus seedlings were maintained under wellwatered or water-stress conditions for 3 months. The S.luteus colonization rate under water stress was higher than that in well-watered conditions. Under water stress, inoculated seedlings had greater growth than non-inoculated seedlings. In addition, under water stress, S. luteus-inoculated seedlings had greater superoxide dismutase and peroxidase activity, higher soluble protein content, lower proline content, and lower malondialdehyde content than non-inoculated seedlings. S. luteus colonization increased the rhizosphere soil-enzyme activity and the rhizosphere soil nutrition content under both well-watered and water-stress conditions. Given the positive impact on seedling growth and physiology, S. luteus shows potential for use in the arid and semi-arid regions of northeast China for afforestation.Mongolian pine is an important afforestation species widely used for ecological management in northeast China. The environment in this region is very unstable and the flora are regularly subjected to drought stress.This paper reports on the influence of inoculation with the Suillus luteus on seedlings under different water conditions.Both inoculated and non-inoculated ectomycorrhizal fungi(ECMF)-S. luteus seedlings were maintained under wellwatered or water-stress conditions for 3 months. The S.luteus colonization rate under water stress was higher than that in well-watered conditions. Under water stress, inoculated seedlings had greater growth than non-inoculated seedlings. In addition, under water stress, S. luteus-inoculated seedlings had greater superoxide dismutase and peroxidase activity, higher soluble protein content, lower proline content, and lower malondialdehyde content than non-inoculated seedlings. S. luteus colonization increased the rhizosphere soil-enzyme activity and the rhizosphere soil nutrition content under both well-watered and water-stress conditions. Given the positive impact on seedling growth and physiology, S. luteus shows potential for use in the arid and semi-arid regions of northeast China for afforestation.

关 键 词：Pinus sylvestris var MONGOLICA Suillus luteus Water stress 

分 类 号：S7[农业科学—林学]