Stalk cell polar ion transport provide for bladder‐based salinity tolerance in Chenopodium quinoa

Please always quote using this URN: urn:nbn:de:bvb:20-opus-287222
  • Chenopodium quinoa uses epidermal bladder cells (EBCs) to sequester excess salt. Each EBC complex consists of a leaf epidermal cell, a stalk cell, and the bladder. Under salt stress, sodium (Na\(^{+}\)), chloride (Cl\(^{−}\)), potassium (K\(^{+}\)) and various metabolites are shuttled from the leaf lamina to the bladders. Stalk cells operate as both a selectivity filter and a flux controller. In line with the nature of a transfer cell, advanced transmission electron tomography, electrophysiology, and fluorescent tracer flux studiesChenopodium quinoa uses epidermal bladder cells (EBCs) to sequester excess salt. Each EBC complex consists of a leaf epidermal cell, a stalk cell, and the bladder. Under salt stress, sodium (Na\(^{+}\)), chloride (Cl\(^{−}\)), potassium (K\(^{+}\)) and various metabolites are shuttled from the leaf lamina to the bladders. Stalk cells operate as both a selectivity filter and a flux controller. In line with the nature of a transfer cell, advanced transmission electron tomography, electrophysiology, and fluorescent tracer flux studies revealed the stalk cell’s polar organization and bladder‐directed solute flow. RNA sequencing and cluster analysis revealed the gene expression profiles of the stalk cells. Among the stalk cell enriched genes, ion channels and carriers as well as sugar transporters were most pronounced. Based on their electrophysiological fingerprint and thermodynamic considerations, a model for stalk cell transcellular transport was derived.show moreshow less

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Author: Nadia Bazihizina, Jennifer Böhm, Maxim Messerer, Christian Stigloher, Heike M. Müller, Tracey Ann Cuin, Tobias Maierhofer, Joan Cabot, Klaus F. X. Mayer, Christian Fella, Shouguang Huang, Khaled A. S. Al‐Rasheid, Saleh Alquraishi, Michael Breadmore, Stefano Mancuso, Sergey Shabala, Peter Ache, Heng Zhang, Jian‐Kang Zhu, Rainer Hedrich, Sönke Scherzer
URN:urn:nbn:de:bvb:20-opus-287222
Document Type:Journal article
Faculties:Fakultät für Biologie / Theodor-Boveri-Institut für Biowissenschaften
Language:English
Parent Title (English):New Phytologist
Year of Completion:2022
Volume:235
Issue:5
First Page:1822
Last Page:1835
Source:New Phytologist 2023, 235(5):1822-1835. DOI: 10.1111/nph.18205
DOI:https://doi.org/10.1111/nph.18205
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 57 Biowissenschaften; Biologie / 570 Biowissenschaften; Biologie
Tag:halophyte; polar ion transport; quinoa; salt tolerance; stalk cell
Release Date:2023/07/03
Licence (German):License LogoCC BY: Creative-Commons-Lizenz: Namensnennung 4.0 International