Open AccessSuberin plasticity to developmental and exogenous cues is regulated by a set of MYB transcription factors
Author(s) -
Vinay Shukla,
JianPu Han,
Fabienne Cléard,
Linnka Lefebvre-Legendre,
Kay Gully,
Paulina Flis,
Alice Berhin,
Tonni Grube Andersen,
David E. Salt,
Christiane Nawrath,
Marie Barberon
Publication year - 2021
Publication title -
proceedings of the national academy of sciences of the united states of america
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.011
H-Index - 771
eISSN - 1091-6490
pISSN - 0027-8424
DOI - 10.1073/pnas.2101730118
Subject(s) - suberin , endodermis , myb , transcription factor , biology , mutant , microbiology and biotechnology , lignin , botany , biochemistry , gene
Significance Endodermal suberin plays crucial roles in plant nutrition by forming barriers for the free diffusion of water and nutrients. Suberin formation is tightly regulated by exogenous and developmental cues, which independently control suberin deposition in the endodermis. A set of four MYB transcription factors, expressed in the endodermis and responding to suberin-inducing conditions, individually prompt suberization and include the MYBs required for suberin formation and regulation. Overexpressing these transcription factors specifically in the endodermis or mutating all four led to plants specifically overproducing or underproducing endodermal suberin, respectively. Physiological analysis of these plants allowed us to decipher the role of suberin independently of synthetic transgenes and other endodermal barriers.