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ACC Deaminase from Lysobacter gummosus OH17 Can Promote Root Growth in Oryza sativa Nipponbare Plants

文献类型： 外文期刊

作者： Laborda, Pedro 1 ; Ling, Jun 1 ; Chen, Xian 1 ; Liu, Fengquan 1 ;

作者机构： 1.Jiangsu Acad Agr Sci, Jiangsu Key Lab Food Qual, Inst Plant Protect, Nanjing 210014, Jiangsu, Peoples R China

2.Jiangsu Acad Agr Sci, Safety State Key Lab Cultivat Base, Minist Sci & Technol, Nanjing 210014, Jiangsu, Peoples R China

关键词： ACC deaminase; Lysobacter; Oryza sativa Nipponbare; plant growth; rice growth promoter

期刊名称：JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY （ 影响因子：5.279； 五年影响因子：5.269 ）

ISSN： 0021-8561

年卷期： 2018 年 66 卷 14 期

页码：

收录情况： SCI

摘要： Although Lysobacter species are a remarkable source of natural compounds with antibacterial and antifungal activities, the ability of these bacteria to produce plant growth promoters remains practically unknown. In this work, the ethylene precursor 1-aminocyclopropane-1-carboxylic acid (ACC) has been isolated from the secretions of Lysobacter gummosus OH17, indicating the presence of an ACC deaminase, which was shown to be encoded in the gene peg_1256. The recombinant enzyme could not only deaminate ACC to provide 2-oxobutanoic acid but also catalyzed the amination of the 2-oxobutanoic acid, demonstrating, for the first time, that ACC deaminases can produce ACC. After the treatment of rice Oryza sativa Nipponbare plants with OH17 ACC deaminase, the ethylene production levels were 44% higher in comparison with the control experiments, allowing significant improvements in root, 10%, and stem, 14%, growth.

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