Enhancing auxin accumulation in maize root tips improves root growth and dwarfs plant height.

ABSTRACT: Maize is a globally important food, feed crop and raw material for the food and energy industry. Plant architecture optimization plays important roles in maize yield improvement. PIN-FORMED (PIN) proteins are important for regulating auxin spatiotemporal asymmetric distribution in multiple plant developmental processes. In this study, ZmPIN1a overexpression in maize increased the number of lateral roots and inhibited their elongation, forming a developed root system with longer seminal roots and denser lateral roots. ZmPIN1a overexpression reduced plant height, internode length and ear height. This modification of the maize phenotype increased the yield under high-density cultivation conditions, and the developed root system improved plant resistance to drought, lodging and a low-phosphate

SUBMITTER: Li Z 

PROVIDER: S-EPMC5785362 | biostudies-literature | 2018 Jan

REPOSITORIES: biostudies-literature