Review
Plant Sciences
Noemie De Zutter, Maarten Ameye, Boris Bekaert, Jan Verwaeren, Leen De Gelder, Kris Audenaert
Summary: This review introduces the mechanisms of how plants facilitate P-uptake and illustrates how phosphate solubilizing bacteria (PSB) improve the bioavailability of phosphorous nutrients. The effectiveness of PSB on increasing plant biomass and P-uptake is assessed using meta-analysis. It is found that improved P-uptake does not always result in improved plant height and biomass. The commonly reported species for P-solubilization are outperformed by scarcely implemented Burkholderia spp. The meta-analysis also challenges the belief that PSB are less effective under field conditions compared to greenhouse conditions.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Engineering, Environmental
Luchao Han, Xiao Wang, Bengang Li, Guofeng Shen, Shu Tao, Bo Fu, Yunman Han, Wei Li, Shengxing Long, Siyuan Peng, Jing Xu
Summary: In this study, a novel Mg-modified lignin biochar (MB) was prepared to improve the ability of phosphate-solubilizing bacteria (PSB) to dissolve FePO4. The results showed that the system with MB was more effective in increasing FePO4 dissolution and organic acid production. Characterization results revealed the formation of Fe(III)(2)Fe(II)(P2O7)(2) crystals on the surface of MB, which increased the solubility of Fe-P. This study provides a new method for the development of insoluble phosphate solubilization technology.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Microbiology
Marwa Amri, Mohamed Ridha Rjeibi, Marwa Gatrouni, Dina M. R. Mateus, Nedra Asses, Henrique J. O. Pinho, Chaabane Abbes
Summary: Soil microorganisms play a crucial role in maintaining ecological balance, particularly through their involvement in nutrient cycles. Phosphate-solubilizing bacteria (PSB) are of particular importance in the rhizosphere and can be used as biofertilizers in agriculture. This study identified five species of PSB, including Pseudomonas fluorescens, P. putida, P. taiwanensis, Stenotrophomonas maltophilia, and Pantoea agglomerans, through genetic sequencing. The PSB isolates exhibited varying degrees of phosphate solubilization, with P. fluorescens showing the highest solubilization ability. Additionally, all five PSB species were capable of producing the growth-promoting hormone indole acetic acid (IAA), with P. fluorescens producing the highest quantity.
Article
Microbiology
Shuaibing Wang, Yi Li, Jie Zhang, Xiangying Wang, Jianping Hong, Chen Qiu, Huisheng Meng
Summary: Phosphate-solubilizing bacteria can relieve phosphorus deficiency without causing pollution. This study investigated the gene expression patterns and organic acid production of a phosphate-solubilizing bacterium under different phosphorus conditions. The results showed that genes related to the citrate cycle pathway were significantly upregulated, leading to increased production of organic acids. This study provides new insights for improving calcareous soils and reducing reliance on chemical phosphate fertilizers.
Review
Plant Sciences
Anna Timofeeva, Maria Galyamova, Sergey Sedykh
Summary: Phosphates are essential for plant growth, and traditional chemical fertilizers are not as effective as organic fertilizers in supplying phosphorus. Soil microorganisms can make phosphates more bioavailable for plants, making them a promising strategy for sustainable agriculture.
Article
Biotechnology & Applied Microbiology
Areesha Ahmad, Urooj Zafar, Adnan Khan, Tooba Haq, Talat Mujahid, Mahreen Wali
Summary: The present study aimed to design a biofertilizer using phosphate solubilizing bacteria (PSB) and locally produced fruit waste. The evaluation of the prepared compost revealed that it was safe, beneficial for soil fertility, and could be used as a phosphatic biofertilizer. This study encourages the use of PSB-rich compost to improve and sustain soil fertility.
JOURNAL OF APPLIED MICROBIOLOGY
(2022)
Article
Microbiology
Ana Ibanez, Alba Diez-Galan, Rebeca Cobos, Carla Calvo-Pena, Carlos Barreiro, Jesus Medina-Turienzo, Mario Sanchez-Garcia, Juan Jose R. Coque
Summary: This study isolated phosphate solubilizing bacteria (PSB) from the barley rhizosphere, with some strains such as Advenella mimigardefordensis, Bacillus cereus, Bacillus megaterium, and Burkholderia fungorum significantly improving growth and productivity of barley crops.
Review
Environmental Sciences
Yingying Cheng, Mathiyazhagan Narayanan, Xiaojun Shi, Xinping Chen, Zhenlun Li, Ying Ma
Summary: Phosphorus is a limiting nutrient in soil-plant nutrient cycling. Phosphate-solubilizing bacteria have the potential to increase crop yields and maintain environmental sustainability by making insoluble phosphate available to plants. This study comprehensively reviews the physicochemical and molecular mechanisms of phosphate-solubilizing bacteria to facilitate the phosphorus cycle in soil-plant systems.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Microbiology
Hui -Ping Li, Qing-Qing Han, Qiong-Mei Liu, Ya-Nan Gan, Christopher Rensing, Windell L. Rivera, Qi Zhao, Jin-Lin Zhang
Summary: Phosphorus (P) is a vital macronutrient for all life on Earth and plays a crucial role in plant growth and yield. However, P deficiency is a common problem in terrestrial ecosystems worldwide. The use of chemical phosphate fertilizer has limitations due to its non-renewable raw materials and adverse effects on the environment. Therefore, finding alternative strategies, such as phosphate-solubilizing bacteria (PSB), to meet plant P demand is important. This article reviews the biogeochemical P cycling in soil systems, explores the use of PSB to alleviate global P resource shortage, discusses the advances in multi-omics technologies, and analyzes the multiple roles of PSB inoculants in sustainable agricultural practices. The authors propose that further research is needed to better understand the interactive mechanisms between PSB, rhizosphere microbiota, and plants in order to maximize the efficacy of PSB as P activators.
MICROBIOLOGICAL RESEARCH
(2023)
Article
Environmental Sciences
Yucheng Zhou, Xingqing Zhao, Yi Jiang, Congcong Ding, Jianguo Liu, Chen Zhu
Summary: This study found that Pb(II) is extremely toxic to biological cells, limiting the restoration of Pb(II) by functional strains. The combination of a Pb(II)-tolerant phosphate solubilizing bacteria (PSB) Ochrobactrum sp. J023 and corn stover biochar was examined, and it was found to enhance the immobilization of Pb(II). The results showed that the removal rate of Pb(II) by biochar combined with phosphate-solubilizing bacteria was as high as 71.30%.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Microbiology
Juan Zhong, Xuewu Hu, Xingyu Liu, Xinglan Cui, Ying Lv, Chuiyun Tang, Mingjiang Zhang, Hongxia Li, Lang Qiu, Weimin Sun
Summary: The remediation of uranium through phosphate-solubilizing bacteria is an effective strategy for transforming mobile uranium into stable minerals in the environment. This study provides new insights into enhancing uranium immobilization rates using Bacillus spp. with glycerol-3-phosphate as the phosphorus source, contributing to the biodegradation of harmful pollutants.
FRONTIERS IN MICROBIOLOGY
(2021)
Article
Environmental Sciences
Chunqiao Xiao, Shuyu Guo, Qi Wang, Ruan Chi
Summary: The study demonstrated that the combination of Pb-resistant phosphate-solubilizing strain of Pseudomonas sp. LA with native plants ryegrass and sonchus could effectively reduce bioavailable Pb in phosphate mining wasteland soil. This bioremediation strategy showed significant potential in enhancing plant growth and mineral uptake, while reducing Pb contamination in the soil.
ENVIRONMENTAL POLLUTION
(2021)
Article
Forestry
Ziwen Zhou, Na Chang, Yaning Lv, Hong Jiang, Cheng Yao, Xiaochun Wan, Yeyun Li, Xianchen Zhang
Summary: This study investigated the effect of plant growth-promoting rhizobacteria on the synthesis of theanine in tea roots. It was found that Bacillus can increase the availability of potassium in the soil, leading to increased theanine synthesis in tea roots.
Article
Microbiology
Fatima Zahra Aliyat, Mohamed Maldani, Mohammed El Guilli, Laila Nassiri, Jamal Ibijbijen
Summary: This study assessed the solubilization capacity of PSB strains isolated from phosphate solid sludge in different forms of inorganic phosphates. The results showed that all strains were able to solubilize the three different forms of phosphates, but there were variations in their solubilization abilities.
Article
Microbiology
Yanqiang Ding, Zhuolin Yi, Yang Fang, Sulan He, Yuming Li, Kaize He, Hai Zhao, Yanling Jin
Summary: This study screened highly efficient PSB, especially suitable for barren rocky soil, and explored the P-solubilizing mechanism. Through transcriptome and metabolomics analysis, it was found that PSB FP12 upregulated genes involved in gluconic acid synthesis and the tricarboxylic acid cycle in an AP-deficient environment, leading to enhanced P-solubilizing ability.
FRONTIERS IN MICROBIOLOGY
(2021)
