Identification of predictor parameters to determine agro-industrial compost suppressiveness against Fusarium oxysporum and Phytophthora capsici diseases in muskmelon and pepper seedlings

被引:34
作者
Blaya, Josefa [1 ]
Lloret, Eva [1 ]
Ros, Margarita [1 ]
Antonio Pascual, Jose [1 ]
机构
[1] CSIC, CEBAS, Dept Soil & Water Conservat & Organ Wastes Manage, Murcia 30100, Spain
关键词
suppressive compost; agro-industrial wastes; Fusarium oxysporum; Phytophthora capsici; SYSTEMIC ACQUIRED-RESISTANCE; F-SP MELONIS; TRICHODERMA-HARZIANUM; MICROBIAL COMMUNITY; SALICYLIC-ACID; WASTE COMPOST; WATER EXTRACT; SOIL; ARABIDOPSIS; PLANTS;
D O I
10.1002/jsfa.6847
中图分类号
S [农业科学];
学科分类号
09 ;
摘要
BACKGROUNDThe lack of reliable prediction tools for evaluation of the level and specificity of compost suppressiveness limits its application. In our study, different chemical, biological and microbiological parameters were used to evaluate their potential use as a predictor parameter for the suppressive effect of composts against Fusarium oxysporum f. sp. melonis (FOM) and Phytophthora capsici (P. capsici) in muskmelon and pepper seedlings respectively. Composts were obtained from artichoke sludge, chopped vineyard pruning waste and various agro-industrial wastes (C1: blanched artichokes; C2: garlic waste; C3: dry olive cake). RESULTSCompost C3 proved to offer the highest level of resistance against FOM, and compost C2 the highest level of resistance against P. capsici. Analysis of phospholipid fatty acids isolated from compost revealed that the three composts showed different microbial community structures. Protease, NAGase and chitinase activities were significantly higher in compost C3, as was dehydrogenase activity in compost C2. CONCLUSIONThe use of specific parameters such as general (dehydrogenase activity) and specific enzymatic activities (protease, NAGase and chitinase activities) may be useful to predict compost suppressiveness against both pathogens. The selection of raw materials for agro-industrial composts is important in controlling Fusarium wilt and Phytophthora root rot. (c) 2014 Society of Chemical Industry
引用
收藏
页码:1482 / 1490
页数:9
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