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Cell wall composition determines handedness reversal in helicoidal cellulose architectures of Pollia condensata fruits.

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cam.depositDate2021-12-17
cam.issuedOnline2021-12-15
datacite.issupplementedby.urlhttps://doi.org/10.17863/CAM.71834
dc.contributor.authorChang, Yin
dc.contributor.authorMiddleton, Rox
dc.contributor.authorOgawa, Yu
dc.contributor.authorGregory, Tom
dc.contributor.authorSteiner, Lisa M
dc.contributor.authorKovalev, Alexander
dc.contributor.authorKaranja, Rebecca HN
dc.contributor.authorRudall, Paula J
dc.contributor.authorGlover, Beverley J
dc.contributor.authorGorb, Stanislav N
dc.contributor.authorVignolini, Silvia
dc.contributor.orcidChang, Yin [0000-0002-3391-2650]
dc.contributor.orcidGlover, Beverley [0000-0002-6393-819X]
dc.contributor.orcidVignolini, Silvia [0000-0003-0664-1418]
dc.date.accessioned2021-12-21T00:31:07Z
dc.date.available2021-12-21T00:31:07Z
dc.date.issued2021-12-21
dc.date.updated2021-12-17T17:19:50Z
dc.description.abstractChiral asymmetry is important in a wide variety of disciplines and occurs across length scales. While several natural chiral biomolecules exist only with single handedness, they can produce complex hierarchical structures with opposite chiralities. Understanding how the handedness is transferred from molecular to the macroscopic scales is far from trivial. An intriguing example is the transfer of the handedness of helicoidal organizations of cellulose microfibrils in plant cell walls. These cellulose helicoids produce structural colors if their dimension is comparable to the wavelength of visible light. All previously reported examples of a helicoidal structure in plants are left-handed except, remarkably, in the Pollia condensata fruit; both left- and right-handed helicoidal cell walls are found in neighboring cells of the same tissue. By simultaneously studying optical and mechanical responses of cells with different handednesses, we propose that the chirality of helicoids results from differences in cell wall composition. In detail, here we showed statistical substantiation of three different observations: 1) light reflected from right-handed cells is red shifted compared to light reflected from left-handed cells, 2) right-handed cells occur more rarely than left-handed ones, and 3) right-handed cells are located mainly in regions corresponding to interlocular divisions. Finally, 4) right-handed cells have an average lower elastic modulus compared to left-handed cells of the same color. Our findings, combined with mechanical simulation, suggest that the different chiralities of helicoids in the cell wall may result from different chemical composition, which strengthens previous hypotheses that hemicellulose might mediate the rotations of cellulose microfibrils.
dc.identifier.doi10.17863/CAM.79087
dc.identifier.eissn1091-6490
dc.identifier.issn0027-8424
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/331635
dc.language.isoeng
dc.publisherNational Academy of Sciences
dc.publisher.departmentDepartment of Plant Sciences
dc.publisher.departmentDepartment of Chemistry
dc.publisher.urlhttps://www.pnas.org/doi/full/10.1073/pnas.2111723118
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectcellulose–hemicellulose interaction
dc.subjectchirality
dc.subjecthelicoidal cell wall
dc.subjectmechanical properties of plant cell wall
dc.subjectstructural colors
dc.titleCell wall composition determines handedness reversal in helicoidal cellulose architectures of Pollia condensata fruits.
dc.typeArticle
dcterms.dateAccepted2021-10-31
prism.endingPagee2111723118
prism.issueIdentifier51
prism.publicationDate2021
prism.publicationNameProceedings of the National Academy of Sciences of USA
prism.startingPagee2111723118
prism.volume118
pubs.funder-project-idBiotechnology and Biological Sciences Research Council (BB/K014617/1)
pubs.funder-project-idEuropean Research Council (639088)
pubs.funder-project-idEngineering and Physical Sciences Research Council (EP/G037221/1)
pubs.licence-display-nameApollo Repository Deposit Licence Agreement
pubs.licence-identifierapollo-deposit-licence-2-1
rioxxterms.typeJournal Article/Review
rioxxterms.versionVoR
rioxxterms.versionofrecord10.1073/pnas.2111723118

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