A conditional mutation in a wheat (Triticum aestivum L.) gene regulating root morphology.

ABSTRACT:

Key message

Characterisation and genetic mapping of a key gene defining root morphology in bread wheat. Root morphology is central to plants for the efficient uptake up of soil water and mineral nutrients. Here we describe a conditional mutant of hexaploid wheat (Triticum aestivum L.) that when grown in soil with high Ca²⁺ develops a larger rhizosheath accompanied with shorter roots than the wild type. In wheat, rhizosheath size is a reliable surrogate for root hair length and this was verified in the mutant which possessed longer root hairs than the wild type when grown in high Ca²⁺ soil. We named the mutant Stumpy and showed it to be due to a single semi-dominant mutation. The short root phenotype at high Ca²⁺ was due to reduced cellular elongatio

SUBMITTER: Zeng D 

PROVIDER: S-EPMC10861616 | biostudies-literature | 2024 Feb

REPOSITORIES: biostudies-literature