A gain-of-function mutation in BnaIAA13 disrupts vascular tissue and lateral root development in Brassica napus.

ABSTRACT: Rapeseed (Brassica napus) is an important oilseed crop worldwide. Plant vascular tissues are responsible for long-distance transport of water and nutrients and for providing mechanical support. The lateral roots absorb water and nutrients. The genetic basis of vascular tissue and lateral root development in rapeseed remains unknown. This study characterized an ethyl methanesulfonate-mutagenized rapeseed mutant, T16, which showed dwarf stature, reduced lateral roots, and leaf wilting. SEM observations showed that the internode cells were shortened. Observations of tissue sections revealed defects in vascular bundle development in the stems and petioles. Genetic analysis revealed that the phenotypes of T16 were controlled by a single semi-dominant nuclear gene. Map-based cloning and genetic

SUBMITTER: Gao J 

PROVIDER: S-EPMC11427839 | biostudies-literature | 2024 Sep

REPOSITORIES: biostudies-literature