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Conservation and divergence of YODA MAPKKK function in regulation of grass epidermal patterning.

ABSTRACT: All multicellular organisms must properly pattern cell types to generate functional tissues and organs. The organized and predictable cell lineages of the Brachypodium leaf enabled us to characterize the role of the MAPK kinase kinase gene BdYODA1 in regulating asymmetric cell divisions. We find that YODA genes promote normal stomatal spacing patterns in both Arabidopsis and Brachypodium, despite species-specific differences in those patterns. Using lineage tracing and cell fate markers, we show that, unexpectedly, patterning defects in bdyoda1 mutants do not arise from faulty physical asymmetry in cell divisions but rather from improper enforcement of alternative cellular fates after division. These cross-species comparisons allow us to refine our understanding of MAPK activities during plant asymmetric cell divisions.

SUBMITTER: Abrash E

PROVIDER: S-EPMC6078329 | biostudies-literature | 2018 Jul

REPOSITORIES: biostudies-literature

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Conservation and divergence of YODA MAPKKK function in regulation of grass epidermal patterning.

Abrash Emily E Anleu Gil M Ximena MX Matos Juliana L JL Bergmann Dominique C DC

Development (Cambridge, England) 20180717 14

All multicellular organisms must properly pattern cell types to generate functional tissues and organs. The organized and predictable cell lineages of the Brachypodium leaf enabled us to characterize the role of the MAPK kinase kinase gene BdYODA1 in regulating asymmetric cell divisions. We find that YODA genes promote normal stomatal spacing patterns in both Arabidopsis and Brachypodium, despite species-specific differences in those patterns. Using lineage tracing an ...[more]

PMID: 29945871

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