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  Viburnum tinus fruits use lipids to produce metallic blue structural color

Middleton, R., Sinnott-Armstrong, M., Ogawa, Y., Jacucci, G., Moyroud, E., Rudall, P. J., et al. (2020). Viburnum tinus fruits use lipids to produce metallic blue structural color. Current Biology, 30(19), 3804-3810.e2. doi:10.1016/j.cub.2020.07.005.

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 Creators:
Middleton, R.1, Author
Sinnott-Armstrong, M.1, Author
Ogawa, Y.1, Author
Jacucci, G.1, Author
Moyroud, E.1, Author
Rudall, P. J.1, Author
Prychid, C.1, Author
Conejero, M.1, Author
Glover, B. J.1, Author
Donoghue, M. J.1, Author
Vignolini, Silvia2, Author                 
Affiliations:
1Max Planck Society, ou_persistent13              
2External Organizations, ou_persistent22              

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Free keywords: biophotonics cell walls fruit color honest signaling plant color plant lipids plant-animal interaction seed dispersal structural color TEM tomography anthocyanin lipid chemistry color fruit genetics lipid metabolism metabolism physiology pigmentation structure activity relation Viburnum Anthocyanins Lipids Structure-Activity Relationship
 Abstract: Middleton et al. report that the metallic blue appearance of Viburnum tinus fruits relies on a layered nanostructure of lipid globules in the epidermal cell wall. As this lipid-based structural coloration correlates with a high fat content, it is proposed that this represents an honest signal of nutritional value. © 2020 Elsevier Inc. Viburnum tinus is an evergreen shrub that is native to the Mediterranean region but cultivated widely in Europe and around the world. It produces ripe metallic blue fruits throughout winter [1]. Despite its limited fleshy pulp [2], its high lipid content [3] makes it a valuable resource to the small birds [4] that act as its seed-dispersers [5]. Here, we find that the metallic blue appearance of the fruits is produced by globular lipid inclusions arranged in a disordered multilayer structure. This structure is embedded in the cell walls of the epicarp and underlaid with a dark layer of anthocyanin pigments. The presence of such large, organized lipid aggregates in plant cell walls represents a new mechanism for structural coloration and may serve as an honest signal of nutritional content. © 2020 Elsevier Inc.

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Language(s): eng - English
 Dates: 2020
 Publication Status: Issued
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.1016/j.cub.2020.07.005
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Title: Current Biology
  Abbreviation : Curr. Biol.
Source Genre: Journal
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Publ. Info: London, UK : Cell Press
Pages: - Volume / Issue: 30 (19) Sequence Number: - Start / End Page: 3804 - 3810.e2 Identifier: ISSN: 0960-9822