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

被引：13

作者：

Bazihizina, Nadia ^{[1
,2
]}

Boehm, Jennifer ^{[3
]}

Messerer, Maxim ^{[4
]}

Stigloher, Christian ^{[5
]}

Mueller, Heike M. ^{[3
]}

Cuin, Tracey Ann ^{[6
]}

Maierhofer, Tobias ^{[3
]}

Cabot, Joan ^{[7
]}

Mayer, Klaus F. X. ^{[4
]}

Fella, Christian ^{[8
]}

Huang, Shouguang ^{[3
]}

Al-Rasheid, Khaled A. S. ^{[9
]}

Alquraishi, Saleh ^{[9
]}

Breadmore, Michael ^{[10
]}

Mancuso, Stefano ^{[1
]}

Shabala, Sergey ^{[2
,11
]}

Ache, Peter ^{[3
]}

Zhang, Heng ^{[12
]}

Zhu, Jian-Kang ^{[12
,13
,14
]}

Hedrich, Rainer ^{[3
]}

Scherzer, Soenke ^{[3
]}

机构：

[1] Univ Florence, Dept Agr Food Environm & Forestry DAGRI, Viale Idee 30, I-50019 Florence, Italy

[2] Univ Tasmania, Coll Sci & Engn, Tasmanian Inst Agr, Private Bag 54, Hobart, Tas 7001, Australia

[3] Univ Wurzburg, Inst Mol Plant Physiol & Biophys, Julius von Sachs Pl 2, D-97082 Wurzburg, Germany

[4] Helmholtz Ctr Munich, Plant Genome & Syst Biol, Ingolstadter Landstr 1, D-85764 Neuherberg, Germany

[5] Univ Wurzburg, Bioctr, Imaging Core Facil, D-97074 Wurzburg, Germany

[6] Univ Tasmania, Sch Nat Sci, Biol Sci, Private Bag 55, Hobart, Tas 7001, Australia

[7] LEITAT Technol Ctr, Diagnost Devices Unit, Innovacio 2, Barcelona 0822, Spain

[8] Fraunhofer IIS, Nano CT Syst, Josef Martin Weg 63, D-97074 Wurzburg, Germany

[9] King Saud Univ, Coll Sci, Zool Dept, POB 2455, Riyadh 11451, Saudi Arabia

[10] Univ Tasmania, Australian Ctr Res Separat Sci ACROSS, Sch Nat Sci, Private Bag 75, Hobart, Tas 7001, Australia

[11] Foshan Univ, Int Res Ctr Membrane Biol, Foshan 528000, Peoples R China

[12] Chinese Acad Sci, Shanghai Ctr Plant Stress Biol, CAS Ctr Excellence Mol Plant Sci, State Key Lab Plant Mol Genet, Shanghai 200032, Peoples R China

[13] Southern Univ Sci & Technol, Inst Adv Biotechnol, 1088 Xueyuan Ave, Shenzhen, Peoples R China

[14] Southern Univ Sci & Technol, Sch Life Sci, 1088 Xueyuan Ave, Shenzhen, Peoples R China

来源：

NEW PHYTOLOGIST | 2022年 / 235卷 / 05期

基金：

澳大利亚研究理事会;

关键词：

halophyte; polar ion transport; quinoa; salt tolerance; stalk cell; ARABIDOPSIS-THALIANA; CHANNEL; EXPRESSION; GENOME; RESPONSES;

D O I：

10.1111/nph.18205

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

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 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.

引用

页码：1822 / 1835

页数：14

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