## 1 Introduction
[26] \\ \hline _Agrobacteriumium tumefaciens_ & & & \\ (Accession No. KX209151) & - & Zinc solubilization & Barley and tomato & [PERSON] et al. [27] \\ (Accession No. KX209189) & & & & \\ \hline _Enterobacter asburiae_ & & & \\ (Strain BFD160; Accession No. KX290147), & & & & \\ _Pseudomonas korensis_ & & & \\ (Strain TFD26; Accession No. KX290158), & - & Mineral solubilization & Cucumber & [PERSON] et al. [28] \\ _Pseudomonas lini_ (Strain BFS112; Accession No. KX290180) & & & & \\ \hline _Pseudomonas putida P. fluorescens_ & - & Zinc and iron solubilization & Rice & [PERSON] et al. [29] \\ _Azospirillum lipoferrum_ & - & IAA production & Rice & [PERSON] et al. [30] \\ \hline _Rhizobium_ sp. & - & Nitrogenase activity & Rice & [PERSON] et al. [30] \\ \hline _Micrococcus yununanensis_ YIM 65004, & - & Siderophore production & Canola and maize & [PERSON] et al. [31] \\ _Stentrophomonas chelatiphaga_ LPM-5 & - & Siderophore production & Canola and maize & [PERSON] et al. [31] \\ \hline _Bacillus amyloidugefaciens_ RWL-1 & - & Biostimulation (gibberellin & Rice & [PERSON] et al. [32] \\ (Accession No. HQ840415) & - & \ \begin{tabular}{c} Biocontrol (antimicrobial) \\ - \\ \end{tabular}  & \begin{tabular}{c} Bana, cotton, maize, \\ and wheat \\ \end{tabular}  & [PERSON] [33] \\ \hline _Pseudomonas fluorescens_ CHA0, & - & Biopestecede (to control root-knot & Chickpea, bean, lentil], & [PERSON] and \\ _Rhizobium leguininsarum_ bv. _phaseoli_ & nematode, _Meloidogyne javanica_) & and pea & [PERSON] [34] \\ \hline _Bacillus subtilis_ GB03; FZB24, & - & Biodegradation of pesticides in & - & [PERSON] et al. [35] \\ _B. amyldiquefaciens_ IN937a, & contaminated soil & - & \\ _B. pumtilus_ SE34 & & & \\ \hline _Azospirillum lipoferrum_ & - & Biodegradation of crude oil in soil & Wheat & [PERSON] et al. [36] \\ _A. brasilense_ & - & & \\ \hline _Pseudomonas aeruginosa_ & & & \\ (Accession No. KP717554), & - & Protection of plants against the toxic & & \\ _Acaligenes faecalis_ & - & effects of heavy metals (Ni, Cr, and Cd) & Brown mustard & Aka and \\ (Accession No. KP717561), & & & & \\ _Bacillus subtilis_ & & & \\ (Accession No. KP717559) & & & & \\ \hline _B. lettitus_ A05, & - & Bioherbicide & _Ageratum conyzoides_ & [PERSON] et al. [38] \\ _Pseudomonas aeruginosa_ A08 & - & & & \\ \hline \hline _B. lettitus_ A05, & - & & \\ (Accession No. KP717554), & - & & \\ (Accession No. KP717561), & - & & \\ (Accession No. Among the most potentially beneficial rhizobacteria, lactic acid bacteria (LAB) are suggested as a new promising group of PGPR. However, their functions in agroecosystems, including their role as biofertilizers, biocontrol agents against pathogens, and biostimulants in plant production, have received far too little attention, apart from intensive studies on their traditional role in food processing sectors. Understanding the functional attributes of LAB and their mechanisms is important to use them as a potential way to improve soil health and sustainable plant production. Therefore, this review aims to update the recognized potential of PGPR, mainly LAB, and to reveal their mechanisms of action via which they impact agroecosystems by securing their sustainability.