Effect of citrate on Aspergillus niger phytase adsorption and catalytic activity in soil

Mezeli Malika M.; Menezes-Blackburn Daniel; George Timothy S.; Giles Courtney D.; Neilson Roy; Haygarth Philip M.

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Effect of citrate on Aspergillus niger phytase adsorption and catalytic activity in soil

机译：柠檬酸盐对土壤曲霉植酸酶吸附和催化活性的影响

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Phytase enzymes from bacteria, fungus and plant root exudates are known to hydrolyse organic phosphorus (P-o) to bioavailable inorganic orthophosphate in soil. Exploiting such biochemical functions in agricultural systems, offers the potential for alternative sustainable phosphorus sources. Phytase adsorption to soil particles and phytate metal complexation has been shown to inhibit phytate (InsP(6)) dephosphorylation. Organic acid anions such as citrate increase phytase catalytic efficiency towards complexed forms of InsP(6), but the mechanisms are poorly understood. The aim of this work was to evaluate Aspergillus niger phytase inactivation and changes in its catalytic properties upon addition to soil, as well as the effect of citrate on phytase adsorption and activity towards free, precipitated and adsorbed InsP(6).

机译：已知来自细菌，真菌和植物根部渗出物的植酸酶酶用于将有机磷（P-O）水解成土壤中的生物可利用的无机正磷酸酯。利用农业系统的这种生化功能，提供替代可持续磷来源的潜力。已经显示对土壤颗粒和植物金属络合物的植酸酶吸附，以抑制植物（IPS（6））去磷酸化。有机酸阴离子如柠檬酸盐将植酸酶催化效率升高到络合形式的Insp（6），但机制理解得很差。这项工作的目的是评估Aspergillus niger植物酶灭活和在土壤外，其催化性能的变化，以及柠檬酸盐对自由，沉淀和吸附的植物吸附和活性的影响。

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来源
《Geoderma: An International Journal of Soil Science》 |2017年第2017期|共8页
作者
Mezeli Malika M.; Menezes-Blackburn Daniel; George Timothy S.; Giles Courtney D.; Neilson Roy; Haygarth Philip M.;
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作者单位

James Hutton Inst Dundee DD2 5DA Scotland;

Univ Lancaster Lancaster Environm Ctr Lancaster LA1 4YQ England;

James Hutton Inst Dundee DD2 5DA Scotland;

James Hutton Inst Dundee DD2 5DA Scotland;

James Hutton Inst Dundee DD2 5DA Scotland;

Univ Lancaster Lancaster Environm Ctr Lancaster LA1 4YQ England;

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正文语种 eng
中图分类土壤学;
关键词
Organic anions; Phosphorus; Phytate; Rhizosphere; InsP(6);

机译：有机阴离子;磷;植物;根际;督察（6）;

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专利

1. Effect of citrate on Aspergillus niger phytase adsorption and catalytic activity in soil [J] . Mezeli Malika M., Menezes-Blackburn Daniel, George Timothy S., Experimental agriculture . 2017,第2期

机译：柠檬酸盐对土壤曲霉植酸酶吸附和催化活性的影响
2. Improving Phytase Enzyme Activity in a Recombinant phyA Mutant Phytase from Aspergillus niger N25 by Error-Prone PCR [J] . Yan Liao, Min Zeng, Zhen-fang Wu, Applied Biochemistry and Biotechnology . 2012,第3期

机译：通过错误-杆式PCR提高黑曲霉N25重组phyA突变植酸酶中的植酸酶活性
3. Improving phytase enzyme activity in a recombinant phyA mutant phytase from Aspergillus niger N25 by error-prone PCR [J] . Liao Y., Zeng M., Wu Z.-F., Applied biochemistry and biotechnology, Part A. enzyme engineering and biotechnology . 2012,第3期

机译：易错PCR提高黑曲霉N25重组phyA突变植酸酶中的植酸酶活性
4. Increasing the thermal stability and catalytic activity of Aspergillus niger glucoamylase by combining site specific mutations and directed evolution [C] . T. P. Frandsen, A. Svendsen, H. Pedersen, Carbohydrate Bioengineering Meeting . 2002

机译：通过组合现场特异性突变和定向演化，增加曲霉葡糖淀粉酶的热稳定性和催化活性
5. Forms and reactivity of manure phosphorus from phytase fed swine in Manitoba soils. [D] . Abioye, Olakulehin Stephen. 2007

机译：曼尼托巴土壤中植酸酶饲喂猪粪磷的形态和反应性。
6. Comparison of the Thermostability Properties of Three Acid Phosphatases from Molds: Aspergillus fumigatus Phytase A. niger Phytase and A. niger pH 2.5 Acid Phosphatase [O] . Markus Wyss, Luis Pasamontes, Roland Rémy, 1998

机译：霉菌中三种酸性磷酸酶的热稳定性能的比较：烟曲霉植酸酶黑曲霉植酸酶和黑曲霉pH 2.5酸性磷酸酶
7. Active site residue 297 of Aspergillus niger phytase critically affects the catalytic properties [O] . Tomschy Andrea, Wyss Markus, Kostrewa Dirk, 2000

机译：黑曲霉植酸酶的活性位点残基297严重影响催化性能

Effect of citrate on Aspergillus niger phytase adsorption and catalytic activity in soil

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