​Potential of Lactic Acid Bacteria in Plant Growth Promotion

Abstract

Background: Lactic acid bacteria are regarded the most important bacteria concerning food fermentation, pharmaceutical and special dietary applications. Strains have been isolated from environments rich in available carbohydrate substrates, such as food and feed, but also in human and animal cavities and in sewage and plant material. Besides lactic acid, other side products include acetate, ethanol, CO2, formate and succinate. The most important advantage of Lactic acid bacteria making them suitable for the use in food biotechnology, is that they are generally recognized as safe (GRAS). Studies on Lactic acid bacteria isolated from aerial parts of plants are scarce. Bacteria that colonize plant roots and promote plant growth are referred to as plant growth-promoting rhizobacteria. Several substances produced by antagonistic rhizobacteria have been related to pathogen control and indirect promotion of growth in many plants. The present work explores the potential use of Lactic acid bacteria in promotion of plant growth. Methods: Three isolates were obtained from aerial parts of pomegranate plant and confirmed by 16S rRNA sequencing to belong to Leuconostoc sp. The isolates were checked for plant growth promoting traits viz. antifungal activity, production of plant growth hormones, enzymes and 1-amino cyclopropane carboxylate deaminase activity. Result: As LAB showed plant growth promoting traits, they can be suitably used for plant growth promotion.

Holistic Approaches to Plant Stress Alleviation: A Comprehensive Review of the Role of Organic Compounds and Beneficial Bacteria in Promoting Growth and Health

“…The production of plant growth hormones is one of the main mechanisms. Lactic acid bacteria called Leuconostoc sp., which is isolated from the aerial part of a pomegranate plant, have been found to promote plant growth through the production of hormones [ 49 ].…”

The potential of lactic acid bacteria in mediating the control of plant diseases and plant growth stimulation in crop production - A mini review

“…and Lactobacillus sp. were tested for plant growth-boosting properties by Abhyankar et al (2022). Besides demonstrating antifungal activity against Fusarium sp., isolates of Lactobacillus sp.…”

Interaction between plants and epiphytic lactic acid bacteria that affect plant silage fermentation

“…Additionally, LAB can facilitate tissue repair in damaged plants and enhance their immune response and disease resistance ( Raman et al, 2022 ). LAB can be use as bioprotective agents, it can produce plant growth-promoting hormones (e.g., indoleacetic acid and gibberellin) that can enhance plant growth ( Abhyankar et al, 2021 ), it also induce the production of defense-related enzymes (phenylalanine ammonialyase, polyphenol oxidase, peroxidase and β-1,3-glucanase) to resist bacterial wilt caused by Ralstonia solanacearum ( Murthy et al, 2012 ; Konappa et al, 2016 ). Verticillium dahliae is a fungus that can cause Verticillium wilt disease, which affects crop growth and leads to a significant decrease in crop yield.…”