Action Mechanisms of Plant Growth Promoting Cyanobacteria in Crops In Situ: A Systematic Review of Literature

Table 2

Research objectives

Research objective	Reference
To understand and evaluate the PGPR effect of various cyanobacterial strains on wheat and pea crops	[19, 20, 25, 29–31].
To isolate and identify native plant-growth-promoting cyanobacterial strains in wheat and rice crops	[4, 32–36].
To determine the effectiveness of cyanobacteria colonization, their physical, metabolic and enzymatic effects, as well as their impact as biofertilizers in stressed soils, corn, and rice crops	[17, 37–40].
To identify the most promising combinations of plant growth promoting cyanobacteria for effective nutrient management in rice plants	[32, 35, 41–43].
To improve rice plants efficiency in saline soil and decrease the electrical conductivity of the soil using N-fixing cyanobacteria as biofertilizers	[32, 44].
To determine the potential of a consortium of endogenous cyanobacteria and CBBs (cyanobacterial biofilmed fertilizers) for the bioremediation of soil and wheat crops growth under greenhouse conditions	[18, 31, 45]

Source: own elaboration