Biochemical Defenses Induced by Mycorrhizae Fungi Glomus Mosseae in Controlling Strawberry Fusarium Wilt.

Wang Yanan,Zhen Wenchao,Zhao Xusheng,Guo Jintang,Yin Baozhong

doi:10.2174/1874120701509010301

Abstract

The effect of VAM on reducing wilt caused by Fusarium oxysporum Schlecht. f.sp. fragariae Winks et Williams (FO) infection in strawberry and the possible mechanisms involved were investigated. Two key substance involved in disease defenses, lignin and hydroxyproline-rich glycoprotein were induced and formed in the cell wall of strawberry root, and the peak content of lignin and hydroxyproline-rich glycoprotein occurred on the 25th day (149.52mg/g) and on the 15th day (10.08 mg/g). The activity of protective enzymes SOD, POD and CAT inoculation with VAM significantly increased when compared with the control under both CK (natural growth) and inoculated with FO. The conductivity of VAM plus FO treatment was higher than the CK treatment, but significantly was lower than the FO treatment.

Highlights

Strawberry, Fragriae ananassa Duch., belongs to the Rosaceae family and is the first fruit in the world ranking of small berry production
Soilborne diseases, especially Fusarium oxysporum Schlecht. f.sp. fragariae Winks et Williams which manifests in strawberry and results in plant wilt, have been serious in strawberry production [1, 2]
Fusarium oxysporum Schlecht. f.sp. fragariae Winks et Williams was provided by the laboratory of Plant Disease Ecology, Agricultural University of Hebei, China

Summary

Introduction

Strawberry, Fragriae ananassa Duch., belongs to the Rosaceae family and is the first fruit in the world ranking of small berry production. It is common that cultivators practice continuous harvesting of strawberry in China because of limited arable land and protective production frequently adopted; but with the increase of cultivation period, many problems such as soil salinity, soil acidification, nutrient imbalance and soil biological degradation have been found. Among these problems, soilborne diseases, especially Fusarium oxysporum Schlecht. Mycorrhizae are mutualistic associations between plant roots and fungi. These beneficial symbioses are ubiquitous in nature and almost all plant species have some form of mycorrhizal association with fungi [3]

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