Recent Advances in Plant Growth Promoter Technology
Nitrogen Fixation Nitrogen is a vital nutrient for plant growth. However, the atmosphere has the highest amount of nitrogen it still is unavailable to plants, until nitrogen fixation. Various plant growth regulators are able to colonize plant internal tissues and enhance their growth-promoting effect. This is done by providing a limiting oxygen environment required for the activation of nitrogen fixation and a more efficient transfer of the nitrogen.
ACC Deaminase Ethylene is an essential metabolite for the growth and development of plants. Being a growth regulator high concentrations of ethylene can considerably reduce the crop yield. Plant growth promoters that have ACC deaminase serve as a solution for this as they are able to regulate ethylene production by metabolizing ACC which is an immediate precursor of ethylene biosynthesis in higher plants. Further, they facilitate plant growth and development since they are able to decrease ethylene levels. Thus, plant resistance to various stresses such as the presence of phytopathogenic bacteria, polyaromatic hydrocarbons, heavy metals, salinity, and drought is increased.
Biological Control Plant growth regulators exert biological control on plants by mechanisms such as competition for nutrients, exclusion of niches, systemic resistance induction, and antagonistic metabolite production. This prevents the deleterious effect of phytopathogens, weeds, and insects on plant growth and
