RT Journal Article
T1 The receptor-like kinases BAM1 and BAM2 are required for root xylem patterning
A1 Fan, Pengfei
A1 Aguilar Parras, Emmanuel
A1 Mariem Bradai, 
A1 Hao Xue, 
A1 Hua Wang, 
A1 Rosas-Díaz, Tábata Victoria
A1 Weihua Tang, 
A1 Sebastian Wolf, 
A1 Heng, Zhang
A1 Lin Xu, 
A1 Lozano-Durán, Rosa
K1 Plantas - Investigación
AB Xylem patterning in the root is established through the creation of opposing gradients of miRNAs and their targets, transcripts of the HD-ZIP III family of transcriptions factors, enabled by the cell-to-cell spread of the former. The miRNAs regulating xylem patterning, miR165/6, move through plasmodesmata, but how their trafficking is regulated remains elusive. Here, we describe that simultaneous mutation of the plasma membrane- and plasmodesmata-localized receptor-like kinases (RLKs) BARELY ANY MERISTEM (BAM) 1 and 2 or expression of the geminivirus-encoded BAM1/2-interactor C4 results in higher accumulation and broader distribution of the HD-ZIP III transcripts despite normal total accumulation of miR165/6, and ultimately causes defects in xylem patterning, which depend on the function of the aforementioned miRNA targets. Taken together, our results show that BAM1 and BAM2 are redundantly required for proper xylem patterning in the Arabidopsis root, by ensuring the proper distribution and accumulation of miR165/6-targeted transcripts.
PB PNAS
YR 2021
FD 2021-02
LK https://hdl.handle.net/10630/33245
UL https://hdl.handle.net/10630/33245
LA eng
NO This re search was supported by the Strategic Priority Research Program of the Chi nese Academy of Sciences, Grant XDB27040206, and by the National NaturalScience Foundation of China (NSFC) (Grants 31671994 and 31870250). E.A. isthe recipient of a Young Investigator Grant from the NSFC (Grant 31950410534)and a Marie Skłodowska-Curie Grant from the European Union’s Horizon 2020Research and Innovation Programme (Grant 896910-GeminiDECODER). Researchin R.L.-D.’s laboratory is funded by the Shanghai Center for Plant Stress Biologyof the Chinese Academy of Sciences and the 100 Talent Program of the ChineseAcademy of Sciences.
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 19 ene 2026