Gibberellin Metabolism and Signaling: Targets for Improving Agronomic Performance of Crops.

Shaopei Gao, Chengcai Chu

Plant & cell physiology 2020 Dec 23

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Gibberellins (GAs) are a class of tetracyclic diterpenoid phytohormones that regulate many aspects of plant development, including seed germination, stem elongation, leaf expansion, pollen maturation, and the development of flowers, fruits and seeds. During the past decades, the primary objective of crop breeding programs has been to increase productivity or yields. 'Green Revolution' genes that can produce semidwarf, high-yielding crops were identified as GA synthesis or response genes, confirming the value of research on GAs in improving crop productivity. The manipulation of GA status either by genetic alteration or by exogenous application of GA or GA biosynthesis inhibitors is often used to optimize plant growth and yields. In this review, we summarize the roles of GAs in major aspects of crop growth and development and present the possible targets for the fine-tuning of GA metabolism and signaling as a promising strategy for crop improvement. © The Author(s) 2020. Published by Oxford University Press on behalf of Japanese Society of Plant Physiologists.

Citation

Shaopei Gao, Chengcai Chu. Gibberellin Metabolism and Signaling: Targets for Improving Agronomic Performance of Crops. Plant & cell physiology. 2020 Dec 23;61(11):1902-1911