de Andrade Luana Alves, Santos Carlos Henrique Barbosa, Frezarin Edvan Teciano, Sales Luziane Ramos, Rigobelo Everlon Cid
Agricultural and Livestock Microbiology Graduate Program, School of Agricultural and Veterinarian Sciences, São Paulo State University (UNESP), São Paulo 14884-900, Brazil.
Microorganisms. 2023 Apr 21;11(4):1088. doi: 10.3390/microorganisms11041088.
Rhizosheric bacteria with several abilities related to plant growth and health have been denominated Plant Growth-Promoting Rhizobacteria (PGPR). PGPR promote plant growth through several modes of action, be it directly or indirectly. The benefits provided by these bacteria can include increased nutrient availability, phytohormone production, shoot and root development, protection against several phytopathogens, and reduced diseases. Additionally, PGPR can help plants to withstand abiotic stresses such as salinity and drought and produce enzymes that detoxify plants from heavy metals. PGPR have become an important strategy in sustainable agriculture due to the possibility of reducing synthetic fertilizers and pesticides, promoting plant growth and health, and enhancing soil quality. There are many studies related to PGPR in the literature. However, this review highlights the studies that used PGPR for sustainable production in a practical way, making it possible to reduce the use of fertilizers such as phosphorus and nitrogen and fungicides, and to improve nutrient uptake. This review addresses topics such as unconventional fertilizers, seed microbiome for rhizospheric colonization, rhizospheric microorganisms, nitrogen fixation for reducing chemical fertilizers, phosphorus solubilizing and mineralizing, and siderophore and phytohormone production for reducing the use of fungicides and pesticides for sustainable agriculture.
具有多种与植物生长和健康相关能力的根际细菌被称为植物促生细菌（PGPR）。PGPR通过多种作用方式促进植物生长，无论是直接还是间接的。这些细菌提供的益处包括提高养分有效性、产生植物激素、促进地上部和根部发育、抵御多种植物病原体以及减少病害。此外，PGPR可以帮助植物抵御盐度和干旱等非生物胁迫，并产生使植物免受重金属毒害的酶。由于PGPR有可能减少合成肥料和农药的使用、促进植物生长和健康以及提高土壤质量，因此已成为可持续农业中的一项重要策略。文献中有许多与PGPR相关的研究。然而，本综述重点介绍了以实际方式将PGPR用于可持续生产的研究，从而有可能减少磷、氮等肥料以及杀菌剂的使用，并提高养分吸收。本综述涉及的主题包括非常规肥料、用于根际定殖的种子微生物组、根际微生物、用于减少化肥的固氮作用、磷的溶解和矿化以及用于减少可持续农业中杀菌剂和农药使用的铁载体和植物激素的产生。
