Pseudomonas putida and its close relatives: Mixing and mastering the perfect tune for plants

STEFANIE B COSTA GUTIERREZ; ADLER CONRADO; MANUEL ESPINOSA URGEL; RICARDO E DE CRISTOBAL

APPLIED MICROBIOLOGY AND BIOTECHNOLOGY

SPRINGER

Lugar: Berlin; Año: 2022

0175-7598

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, somePseudomonas putidastrains 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 pertaining to P. putidaand close relativesas a PGPR, and we have compiled a detailed list of P. putidasensustricto and sensulatostrains that have been studied for their plant growth-promoting characteristics. However, the mere in vitroanalysis 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.KEYWORDS:Pseudomonas putida, plant growth-promoting rhizobacteria (PGPR), abiotic stress, biocontrol, sustainable agricultureKey pointsThe 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.