Potential of Algae–Bacteria Synergistic Effects on Vegetable Production

Abstract

Modern agriculture has become heavily dependent on chemical fertilizers, which have caused environmental pollution and the loss of soil fertility and sustainability. Microalgae and plant growth-promoting bacteria (PGPB) have been identified as alternatives to chemical fertilizers for improving soil fertility. This is because of their biofertilizing properties, through the production of bioactive compounds (e.g., phytohormones, amino acids, and carotenoids) and their ability to inhibit plant pathogens. Although treatment based on a single species of microalgae or bacteria is commonly used in agriculture, there is growing experimental evidence suggesting that a symbiotic relationship between microalgae and bacteria synergistically affects each other’s physiological and metabolomic processes. Moreover, the co-culture/combination treatment of microalgae and bacteria is considered a promising approach in biotechnology for wastewater treatment and efficient biomass production, based on the advantage of the resulting synergistic effects. However, much remains unexplored regarding the microalgal–bacterial interactions for agricultural applications. In this review, we summarize the effects of microalgae and PGPB as biofertilizing agents on vegetable cultivation. Furthermore, we present the potential of the microalgae–PGPB co-culture/combination system for the environmentally compatible production of vegetables with improved quality.

Photoautotrophs–Bacteria Co-Cultures: Advances, Challenges and Applications

“…Furthermore, this consortium can prevent the occurrence of certain plant diseases with particular suppressive mechanisms. Reprinted with permission from Kang et al (2021). Potential of Algae-Bacteria Synergistic Effects on Vegetable Production.…”

“…Potential of Algae-Bacteria Synergistic Effects on Vegetable Production. Frontiers in Plant Science [102]. Copyright (2021) Frontiers.…”

Effects of the bio-fertilizers on potato mini tubers number and size produced from tissue culture plants

“…These results are in accordance with those of (Ali et al, 2020); in their work, the application of bacteria as a biofertilizer in potatoes plants increases the growth parameters and plants height with a rate of 15% compared to the control. Moreover, (Tuku, 2000) mentions that bacteria are significant microorganisms that can improve vegetable yield growth and control pathogens through various mechanisms (Kang et al, 2021).…”

“…The application of vermicompost increases the bioavailability of phosphorus in the soil, affecting plant growth in potato cropping and improving crop yield (Ansari, 2008). Bacteria's utilization in plant fertilization promotes the growth of plants with higher solubilization of tricalcium phosphate (TCP) by increasing nutrient uptake parameters and producing indole-3-acetic acid (IAA) and sierophores (Kang et al, 2021). The mixture Alg +Myco have the lowest tuber numbers, diameters, and weight values (Table 4).…”

“…The mixture Alg +Myco have the lowest tuber numbers, diameters, and weight values (Table 4). Generally, the mixture of biofertilizers can produce growth factors and exotoxins that promote or inhibit growth and development (Kang et al, 2021). In procedure research, some micro-organisms could not function with a high level of nutrients elements; the effect of mixtures of two biofertilizers or more simultaneously depends on the species, genotype, environmental conditions, and the concentration applied (Mujtaba and Lee, 2016).…”