Planta Piloto de Procesos Industriales Microbiológicos (PROIMI-CONICET), Avenida Belgrano Y Pasaje Caseros, 4000, San Miguel de Tucumán, Tucumán, Argentina.
Instituto Superior de Investigaciones Biológicas (INSIBIO, CONICET-UNT) E Instituto de Química Biológica "Dr. Bernabé Bloj", Facultad de Bioquímica, Química y Farmacia, Universidad Nacional de Tucumán, 461, 4000 San Miguel de Tucumán, Chacabuco, Tucumán, Argentina.
Appl Microbiol Biotechnol. 2022 May;106(9-10):3351-3367. doi: 10.1007/s00253-022-11881-7. Epub 2022 Apr 30.
Plant growth-promoting rhizobacteria (PGPR) are a group of microorganisms of utmost interest in agricultural biotechnology for their stimulatory and protective effects on plants. Among the various PGPR species, some Pseudomonas putida strains combine outstanding traits such as phytohormone synthesis, nutrient solubilization, adaptation to different stress conditions, and excellent root colonization ability. In this review, we summarize the state of the art and the most relevant findings related to P. putida and its close relatives as PGPR, and we have compiled a detailed list of P. putida sensu stricto, sensu lato, and close relative strains that have been studied for their plant growth-promoting characteristics. However, the mere in vitro analysis of these characteristics does not guarantee correct plant performance under in vivo or field conditions. Therefore, the importance of studying adhesion and survival in the rhizosphere, as well as responses to environmental factors, is emphasized. Although numerous strains of this species have shown good performance in field trials, their use in commercial products is still very limited. Thus, we also analyze the opportunities and challenges related to the formulation and application of bioproducts based on these bacteria. KEY POINTS: •The mini-review updates the knowledge on Pseudomonas putida as a PGPR. • Some rhizosphere strains are able to improve plant growth under stress conditions. • The metabolic versatility of this species encourages the development of a bioproduct.
植物促生根际细菌（PGPR）是农业生物技术中最受关注的微生物群，因为它们对植物具有刺激和保护作用。在各种 PGPR 物种中，一些假单胞菌属菌株结合了出色的特性，如植物激素合成、养分溶解、适应不同胁迫条件和出色的根定植能力。在这篇综述中，我们总结了与 PGPR 相关的最先进技术和最相关发现，以及已被研究用于其植物促生特性的假单胞菌属及其近缘种的详细清单。然而，仅仅在体外分析这些特性并不能保证在体内或田间条件下正确的植物表现。因此，强调了研究在根际中的粘附和存活以及对环境因素的响应的重要性。尽管该物种的许多菌株在田间试验中表现出良好的性能，但它们在商业产品中的应用仍然非常有限。因此，我们还分析了基于这些细菌的生物制品的配方和应用相关的机会和挑战。 要点： • 本迷你综述更新了假单胞菌属作为 PGPR 的知识。 • 一些根际菌株能够在胁迫条件下改善植物生长。 • 该物种的代谢多功能性鼓励开发生物制品。
