Non-glandular trichomes of sunflower are important in the absorption and translocation of foliar-applied Zn

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dc.contributor.authorLi, Cen_AU
dc.contributor.authorWu, Jen_AU
dc.contributor.authorBlamey, FPCen_AU
dc.contributor.authorWang, LLen_AU
dc.contributor.authorZhou, Len_AU
dc.contributor.authorPaterson, DJen_AU
dc.contributor.authorvan der Ent, Aen_AU
dc.contributor.authorFernández, Ven_AU
dc.contributor.authorLombi, Een_AU
dc.contributor.authorWang, Yen_AU
dc.contributor.authorKopittke, PMen_AU
dc.date.accessioned2025-01-13T04:35:52Zen_AU
dc.date.available2025-01-13T04:35:52Zen_AU
dc.date.issued2021-06-22en_AU
dc.date.statistics2024-10-30en_AU
dc.description.abstractTrichomes are potentially important for absorption of foliar fertilizers. A study has shown that the non-glandular trichromes (NGTs) of sunflower (Helianthus annuus) accumulated high concentrations of foliar-applied zinc (Zn); however, the mechanisms of Zn accumulation in the NGTs and the fate of this Zn are unclear. Here we investigated how foliar-applied Zn accumulates in the NGTs and the subsequent translocation of this Zn. Time-resolved synchrotron-based X-ray fluorescence microscopy and transcriptional analyses were used to probe the movement of Zn in the NGTs, with the cuticle composition of the NGTs examined using confocal Raman microscopy. The accumulation of Zn in the NGTs is both an initial preferential absorption process and a subsequent translocation process. This preferred absorption is likely because the NGT base has a higher hydrophilicity, whilst the subsequent translocation is due to the presence of plasmodesmata, Zn-chelating ligands, and Zn transporters in the NGTs. Furthermore, the Zn sequestered in the NGTs was eventually translocated out of the trichome once the leaf Zn concentration had decreased, suggesting that the NGTs are also important in maintaining leaf Zn homeostasis. This study demonstrates for the first time that trichomes have a key structural and functional role in the absorption and translocation of foliar-applied Zn. © The Author(s) 2021. Published by Oxford University Press on behalf of the Society for Experimental Biology.en_AU
dc.description.sponsorshipThe authors acknowledge use of the facilities and technical assistance of the Analytical & Testing Centre of the Northwestern Polytechnical University. Parts of the research were undertaken on the XFM beamline (13412) at the Australian Synchrotron, part of the Australian Nuclear Science and Technology Organisation (ANSTO). This work was supported by a China Postdoctoral Science Foundation grant (2019M663825), the Key Research and Development Program of Shaanxi Province (2019KW-044), the Fundamental Research Funds for the Central Universities of China (3102019JC007), and the National Natural Science Foundation of China (NSFC, 42077352). Support was also provided to CL through the International Postdoctoral Exchange Fellowship Program (Talent-Introduction Program, YJ20190217).en_AU
dc.format.mediumPrinten_AU
dc.identifier.citationLi, C., Wu, J., Blamey, F. P. C., Wang, L., Zhou, L., Paterson, D. J., van der Ent, A., Fernández, V., Lombi, E., Wang, Y., & Kopittke, P. M. (2021). Non-glandular trichomes of sunflower are important in the absorption and translocation of foliar-applied Zn. Journal of Experimental Botany, 72(13), 5079-5092. doi:10.1093/jxb/erab180en_AU
dc.identifier.issn0022-0957en_AU
dc.identifier.issn1460-2431en_AU
dc.identifier.issue13en_AU
dc.identifier.journaltitleJournal of Experimental Botanyen_AU
dc.identifier.pagination5079-5092en_AU
dc.identifier.urihttps://doi.org/10.1093/jxb/erab180en_AU
dc.identifier.urihttps://apo.ansto.gov.au/handle/10238/15931en_AU
dc.identifier.volume72en_AU
dc.languageEnglishen_AU
dc.language.isoenen_AU
dc.publisherOxford University Pressen_AU
dc.subjectZincen_AU
dc.subjectSunflowersen_AU
dc.subjectAbsorptionen_AU
dc.subjectTranslocationen_AU
dc.subjectFertilizersen_AU
dc.subjectFluorescenceen_AU
dc.subjectX-ray fluorescence analysisen_AU
dc.subjectMicroscopyen_AU
dc.titleNon-glandular trichomes of sunflower are important in the absorption and translocation of foliar-applied Znen_AU
dc.typeJournal Articleen_AU
dcterms.dateAccepted2021-04-27en_AU
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