What question did this study set out to answer?

To elucidate the ancestral function of the pre-lignin biosynthetic machinery in early-diverging land plants lacking true lignin.

March 8, 2017Nature CommunicationsOpen Access

A phenol-enriched cuticle is ancestral to lignin evolution in land plants

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Authors

HRH RenaultCentre National de la Recherche Scientifique AAAnnette AlberCentre National de la Recherche Scientifique NHNelly A. HorstUniversity of Freiburg

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Implication

Genetic study reveals an ancestral pre-lignin pathway regulates cuticle formation in moss, indicating phenolic metabolism enabled plant adaptation to land before lignin evolved.

Key Points

To elucidate the ancestral function of the pre-lignin biosynthetic machinery in early-diverging land plants lacking true lignin.
Deleted the cytochrome P450 oxygenase gene that serves as the entry point for angiosperm lignin biosynthesis in a moss model.
Assessed developmental phenotypes, cuticle permeability, organ morphology, and metabolic coupling pathways in mutant moss lines.
Deletion of the pre-lignin pathway severely impaired moss development, leading to defective cuticle synthesis, organ fusion, and increased susceptibility to desiccation.
Identified that the moss pre-lignin pathway is coupled with ascorbate catabolism rather than shikimate regulation, indicating ancestral cuticles share evolutionary origins with lignin, cutin, and suberin.

Cite This Study

Renault et al. (2017) studied this question.

synapsesocial.com/papers/6a9a5c07b5946d86254e2e04 https://doi.org/10.1038/ncomms14713

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Implication

Genetic study reveals an ancestral pre-lignin pathway regulates cuticle formation in moss, indicating phenolic metabolism enabled plant adaptation to land before lignin evolved.

A phenol-enriched cuticle is ancestral to lignin evolution in land plants

Discussion

Member takes

Implication

Key Points

Cite This Study

A phenol-enriched cuticle is ancestral to lignin evolution in land plants

Discussion

Member takes

Implication

Key Points

Cite This Study

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