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Improving crop lodging resistance by adjusting plant height and stem strength


Niu, Y and Chen, T and Zhao, C and Zhou, M, Improving crop lodging resistance by adjusting plant height and stem strength, Agronomy, 11, (12) Article 2421. ISSN 2073-4395 (2021) [Refereed Article]

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DOI: doi:10.3390/agronomy11122421


Crop height not only determines plant resistance to lodging and crowding, but also affects crop architecture, apical dominance, biomass, and mechanical harvesting. Plant height is determined by the internode elongation, regulated by genes involved in gibberellin (GA) and brassinosteroid (BR) biosynthesis or related signaling networks. Plants' genetic inability to synthesize or respond to GAs and BRs induce dwarfness. However, the signaling mechanisms of GAs and BRs for controlling plant height individually or collectively are still unclear. Since stem mechanically supports plant during the whole life span, components that affect stem physical strength are also important to crop lodging resistance. One of the major components is lignin, which forms stem structure, thus contributing to crop lodging resistance. In this review, we looked into the reported genes involved in lignin, GAs, and BRs biosynthesis and summarized the signaling networks centered by these genes. Then, we filled the knowledge gap by modifying plant height through interrupting normal GA and BR metabolism utilizing core gene inhibitors. Therefore, we highly endorsed the current approaches of using plant growth regulators (PRGs) to maintain an ideal plant height under lodging stress, and proposed possibilities of modifying crop culm strength against lodging as well.

Item Details

Item Type:Refereed Article
Keywords:lodging resistance, plant height, GAs, BRs, lignin, PRGs
Research Division:Agricultural, Veterinary and Food Sciences
Research Group:Crop and pasture production
Research Field:Crop and pasture improvement (incl. selection and breeding)
Objective Division:Plant Production and Plant Primary Products
Objective Group:Other plant production and plant primary products
Objective Field:Other plant production and plant primary products not elsewhere classified
UTAS Author:Niu, Y (Mrs Yanan Niu)
UTAS Author:Chen, T (Mr Tianxiao Chen)
UTAS Author:Zhao, C (Dr Chenchen Zhao)
UTAS Author:Zhou, M (Professor Meixue Zhou)
ID Code:151497
Year Published:2021
Deposited By:TIA - Research Institute
Deposited On:2022-08-01
Last Modified:2022-08-01

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