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Mutation breeding of Aspergillus niger by atmospheric room temperature plasma to enhance phosphorus solubilization ability

文献类型： 外文期刊

作者： Peng, Qiuju 1 ; Xiao, Yang 2 ; Zhang, Su 1 ; Zhou, Changwei 1 ; Xie, Ailin 1 ; Li, Zhu 1 ; Tan, Aijuan 1 ; Zhou, Lihong 1 ; Xie, Yudan 1 ; Zhao, Jinyi 1 ; Wu, Chenglin 1 ; Luo, Lei 1 ; Huang, Jie 1 ; He, Tengxia 1 ; Sun, Ran 1 ;

作者机构： 1.Guizhou Univ, Coll Life Sci,Inst Agrobioengn, Collaborat Innovat Ctr Mt Ecol & Agrobioengn,Mini, Key Lab Plant Resource Conservat & Germplasm Inno, Guiyang, Guizhou, Peoples R China

2.Inst Supervis & Inspect Prod Qual Guizhou Prov, Guiyang, Peoples R China

3.Bur Agr & Rural Affairs, Anshun, Guizou Province, Peoples R China

4.Guizhou Key Lab Agr Biotechnol, Guiyang, Peoples R China

关键词： Aspergillus niger; Atmospheric room temperature plasma; Phosphate-solubilizing ability; Mutagenesis

期刊名称：PEERJ （ 影响因子：3.061； 五年影响因子：3.537 ）

ISSN： 2167-8359

年卷期： 2022 年 10 卷

页码：

收录情况： SCI

摘要： Background: Phosphorus (P) is abundant in soils, including organic and inorganic forms. Nevertheless, most of P compounds cannot be absorbed and used by plants. Aspergillus niger v. Tiegh is a strain that can efficiently degrade P compounds in soils. Methods: In this study, A. niger xj strain was mutated using Atmospheric Room Temperature Plasma (ARTP) technology and the strains were screened by Mo-Sb Colorimetry with strong P-solubilizing abilities. Results: Compared with the A. niger xj strain, setting the treatment time of mutagenesis to 120 s, four positive mutant strains marked as xj 90-32, xj120-12, xj120-31, and xj180-22 had higher P-solubilizing rates by 50.3%, 57.5%, 55.9%, and 61.4%, respectively. Among them, the xj120-12 is a highly efficient P solubilizing and growth-promoting strain with good application prospects. The growth characteristics such as plant height, root length, and dry and fresh biomass of peanut (Arachis hypogaea L.) increased by 33.5%, 43.8%, 43.4%, and 33.6%, respectively. Besides available P, the chlorophyll and soluble protein contents also vary degrees of increase in the P-solubilizing mutant strains. Conclusions: The results showed that the ARTP mutagenesis technology can improve the P solubilization abilities of the A. niger mutant strains and make the biomass of peanut plants was enhanced of mutant strains.

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