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首页> 外文期刊>International Biological and Biomedical Journal >Measurement of ACC-Deaminase Production in Halophilic, Alkalophilic and Haloalkalophilic Bacterial Isolates in Soil
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Measurement of ACC-Deaminase Production in Halophilic, Alkalophilic and Haloalkalophilic Bacterial Isolates in Soil

机译：测量土壤中嗜盐，嗜碱和嗜盐细菌分离物中ACC脱氨酶的产量

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摘要

Strains with 1-aminocyclopropane-1-carboxylate (ACC) deaminase activity can cause plant growth on stress condition. In the presence of bacteria with the ability of ACC deaminase production in the rhizosphere, it is possible to convert the ethylene precursor (ACC) to α-ketobutyrate and ammonium, reducing the ethylene levels in host plants. In order to measure the power and level of ACC deaminase production in halophilic, alkalophilic and haloalkalophilic microbial isolates, soil samples were collected from six different areas of Khorasan Razavi Province and bacterial isolates were separated and purified. The haloalkalophiles isolates showed the maximum ACC deaminase production (0.4374 mM) among the three groups of isolates, followed by alkalophiles isolates (0.241 mM) and halophiles (0.0848 mM). Equations to predict the concentration of ACC deaminase production were only significant in the halophilic isolates (probability level= 1.0) under the effect of electrical conductivity and pH at 0.01 probability level. Also, the multiple regression analysis for predicting ACC deaminase production by isolates had significant performance in low concentrations, while at higher concentrations of the enzyme other factors were effective in ACC deaminase production. The higher ACC deaminase productivity power of haloalkalophilic isolates makes them interesting for basic biotechnology studies.
机译：具有1-氨基环丙烷-1-羧酸（ACC）脱氨酶活性的菌株可在胁迫条件下引起植物生长。在具有能够在根际中产生ACC脱氨酶的细菌的情况下，可以将乙烯前体（ACC）转化为α-酮丁酸酯和铵盐，从而降低宿主植物中的乙烯含量。为了测量在嗜盐，嗜碱和嗜盐嗜碱微生物分离物中ACC脱氨酶产生的能力和水平，从霍拉桑拉哈维省的六个不同地区收集土壤样品，并对细菌分离物进行分离和纯化。嗜盐嗜碱菌分离株在三组分离株中显示出最大的ACC脱氨酶产量（0.4374 mM），其次是嗜碱菌分离株（0.241 mM）和嗜盐菌（0.0848 mM）。预测ACC脱氨酶产生浓度的方程式仅在嗜盐菌中（概率水平= 1.0）在电导率和pH值为0.01的概率水平下才有意义。同样，用于预测分离株产生ACC脱氨酶的多元回归分析在低浓度下具有显着性能，而在较高浓度的酶中，其他因素对ACC脱氨酶的产生有效。卤代嗜碱菌的更高的ACC脱氨酶生产力，使它们对于基础生物技术研究很有趣。

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