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Hydrolysis products of agricultural waste can serve as microbial fertilizer enhancers to promote the growth of maize crops

文献类型： 外文期刊

作者： Xu, Yu 1 ; Wang, Wei 2 ; Wang, He 1 ; Tian, Yinping 1 ; Yue, Zhengfu 3 ; Li, Cheng 5 ; Wang, Yuefeng 5 ; Zhang, Jing 6 ; Zhang, Ruifu 2 ;

作者机构： 1.Chinese Acad Sci, Key Lab Agr Water Resources, Ctr Agr Resources Res, Hebei Key Lab Soil Ecol,Inst Genet & Dev Biol, Shijiazhuang, Hebei, Peoples R China

2.Nanjing Agr Univ, Natl Engn Res Ctr Organ based Fertilizers, Jiangsu Collaborat Innovat Ctr Solid Organ Waste R, Jiangsu Prov Key Lab Organ Solid Waste Utilizat, Nanjing, Peoples R China

3.Minist Agr & Rural Affairs, Key Lab Low carbon Green Agr Trop Reg China, Haikou, Peoples R China

4.Chinese Acad Trop Agr Sci, Environm & Plant Protect Inst, Hainan Key Lab Trop Ecocircular Agr, Haikou, Peoples R China

5.Hebei Prov Acad Ecol & Environm Sci, Hebei Prov Lab Water Environm Sci, Shijiazhuang, Peoples R China

6.Hainan Med Univ, Sch Trop & Lab Med, Dept Environm Sci, Haikou, Peoples R China

关键词： agricultural wastes; organic acids; hypoxia hydrolysate; PGPR; root

期刊名称：FRONTIERS IN PLANT SCIENCE （ 影响因子：4.8； 五年影响因子：5.7 ）

ISSN： 1664-462X

年卷期： 2024 年 15 卷

页码：

收录情况： SCI

摘要： Efficient utilization of agricultural wastes and reduction of chemical fertilizer inputs are crucial for sustainable development of agriculture. Plant growth promoting rhizobacteria (PGPR) are widely used as biofertilizers to partially replace chemical fertilizers in agricultural production. The functional performance of PGPR strains is closely related to their root colonization capacity. Some organic acids from root exudates can recruit PGPR to colonize the root. In this study, agricultural organic wastes such as mushroom bran and tobacco waste materials were used to produce organic acids through the hypoxic hydrolysis process. The hydrolysis conditions were optimized to maximize the production of a mixture of complex organic acids from the hypoxic hydrolysis of these materials, employing both single-factor and orthogonal experimental methods. The diluted hydrolysates were tested for their effects on the rhizosphere colonization of the PGPR strain Bacillus amyloliquefaciens SQR9 using fluorogenic quantitative PCR in greenhouse pot experiments. The results demonstrated that hypoxic hydrolysates from tobacco waste and mushroom bran significantly enhanced the colonization of SQR9 in the maize rhizosphere. Specifically, a 2000-fold dilution of tobacco waste hydrolysate yielded the most effective result, while a 5000-fold dilution of mushroom bran hydrolysate provided the best outcome. All treatments combining these hydrolysates with SQR9 significantly increased maize stem dry weight, indicating that with appropriate treatment, such as anaerobic fermentation, these agricultural organic wastes can serve as synergistic agents of microbial fertilizers, contributing to agricultural sustainability.

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