Biosynthesis and beneficial effects of microbial gibberellins on crops for sustainable agriculture

Soil microbes promote plant growth through several mechanisms such as secretion of chemical compounds including plant growth hormones. Among the phytohormones, auxins, ethylene, cytokinins, abscisic acid and gibberellins are the best understood compounds. Gibberellins were first isolated in 1935 from the fungus Gibberella fujikuroi and are synthesized by several soil microbes. The effect of gibberellins on plant growth and development has been studied, as has the biosynthesis pathways, enzymes, genes and their regulation. This review revisits the history of gibberellin research highlighting microbial gibberellins and their effects on plant health with an emphasis on the early discoveries and current advances that can find vital applications in agricultural practices.

Automated summary

Soil microbes promote plant growth by secreting chemical compounds including plant growth hormones, with gibberellins being one of the best understood compounds. Studies have focused on the effects of gibberellins on plant growth and development, as well as the biosynthesis pathways, enzymes, genes, and regulation involved. A review of the history of gibberellin research highlights the effects of microbial gibberellins on plant health and their potential applications in agriculture.