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
发表期刊CHEMOSPHERE
ISSN0045-6535
卷号175页码:497-504
文章类型期刊论文
摘要Arsenic (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.
关键词Fungi Arsenic Water Spinach Soil Enzyme Speciation Xanes
DOI10.1016/j.chemosphere.2017.02.048
收录类别SCI
语种英语
WOS记录号WOS:000397691200059
引用统计
文献类型期刊论文
条目标识符http://ir.sinap.ac.cn/handle/331007/27353
专题中科院上海应用物理研究所2011-2018年
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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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