2,4-D resistance due to a deletion in IAA2 in Sisymbrium orientale L. carries no apparent fitness penalty

Abstract

A deletion mutation in the degron tail of auxin coreceptor IAA2 was found to confer resistance to the herbicide 2,4-D in Sisymbrium orientale. Given the importance of auxin signalling in plant development, this study was conducted to investigate whether this deletion mutation may affect plant fitness.