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Inoculating chlamydospores of Trichoderma asperellum SM-12F1 changes arsenic availability and enzyme activity in soils and improves water spinach growth
Su, SM; Zeng, XB; Bai, LY; Williams, PN; Wang, YN; Zhang, LL; Wu, CX
2017
Source PublicationCHEMOSPHERE
ISSN0045-6535
Volume175Pages:497-504
Subtype期刊论文
AbstractArsenic (As)-contaminated agricultural soils threaten crop yields and pose a human health risk. Augmentation of exogenous microorganisms exhibiting plant-growth promoting and As speciation changing shows potential to improve crop growth and change soil As availability. Trichoderma asperellum SM-12F1 exhibiting both traits was developed into chlamydospores to improve its persistence in contaminated soils. After inoculation, As availability and enzyme activity in two types of soils and the growth as well as As uptake of water spinach (Ipomoea aquatic Forsk.) were investigated. The results indicated that inoculation significantly improved water spinach growth in both soils. Inoculating chlamydospores at 5% significantly increased As concentration (139%), bioconcentration factor (150%), and translocation factor (150%) in water spinach grown in Chenzhou (CZ) soils, while no significant change for these in Shimen (SM) soils. Inoculating chlamydospores at 5% caused a significant increase (16%) of available As content in CZ soils, while a significant decrease (13%) in SM soils. Inoculation significantly caused As methylation in both soils, while significant As reduction merely observed in CZ soils. The differential changes in available As contents in both soils were attributed to the soil pH, As fractionations and speciation characteristics. Furthermore, Inoculating chlamydospores at 5% significantly improved the activities of beta-glucosidase (155%), chitinase (211%), and phosphatase (108%) in SM soils, while significant decreases in beta-glucosidase (81%), phosphatase (54%), aminopeptidase (60%), and catalase (67%) in CZ soils. Bioaugmentation and As availability change were responsible for this result. These observations will be helpful for the application of fungal chlamydospores in the future bioremediation. (C) 2017 Published by Elsevier Ltd.
KeywordFungi Arsenic Water Spinach Soil Enzyme Speciation Xanes
DOI10.1016/j.chemosphere.2017.02.048
Indexed BySCI
Language英语
WOS IDWOS:000397691200059
Citation statistics
Cited Times:6[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/27353
Collection中科院上海应用物理研究所2011-2018年
Recommended Citation
GB/T 7714
Su, SM,Zeng, XB,Bai, LY,et al. Inoculating chlamydospores of Trichoderma asperellum SM-12F1 changes arsenic availability and enzyme activity in soils and improves water spinach growth[J]. CHEMOSPHERE,2017,175:497-504.
APA Su, SM.,Zeng, XB.,Bai, LY.,Williams, PN.,Wang, YN.,...&Wu, CX.(2017).Inoculating chlamydospores of Trichoderma asperellum SM-12F1 changes arsenic availability and enzyme activity in soils and improves water spinach growth.CHEMOSPHERE,175,497-504.
MLA Su, SM,et al."Inoculating chlamydospores of Trichoderma asperellum SM-12F1 changes arsenic availability and enzyme activity in soils and improves water spinach growth".CHEMOSPHERE 175(2017):497-504.
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