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Bronwyn J. Barkla
Researcher at Southern Cross University
Publications - 86
Citations - 4373
Bronwyn J. Barkla is an academic researcher from Southern Cross University. The author has contributed to research in topics: Mesembryanthemum crystallinum & Antiporter. The author has an hindex of 33, co-authored 81 publications receiving 3646 citations. Previous affiliations of Bronwyn J. Barkla include Kathmandu & University of Oxford.
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Journal ArticleDOI
Energy costs of salt tolerance in crop plants
Rana Munns,Rana Munns,David A. Day,Wieland Fricke,Michelle Watt,Borjana Arsova,Bronwyn J. Barkla,Jayakumar Bose,Caitlin S. Byrt,Caitlin S. Byrt,Zhong-Hua Chen,Kylie J. Foster,Matthew Gilliham,Sam W Henderson,Colin L. D. Jenkins,Herbert J. Kronzucker,Stanley J. Miklavcic,Darren Plett,Stuart J. Roy,Sergey Shabala,Sergey Shabala,Megan C. Shelden,Kathleen L. Soole,Nicolas L. Taylor,Mark Tester,Stefanie Wege,Lars H. Wegner,Stephen D. Tyerman +27 more
TL;DR: This review considers energy costs of salinity tolerance in crop plants and provides a framework for a quantitative assessment of costs and different sources of energy, and modifications of root system architecture that would maximise water versus ion uptake are addressed.
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The high affinity K+ transporter AtHAK5 plays a physiological role in planta at very low K+ concentrations and provides a caesium uptake pathway in Arabidopsis
Zhi Qi,Corrina R. Hampton,Ryoung Shin,Bronwyn J. Barkla,Philip J. White,Daniel P. Schachtman +5 more
TL;DR: It is concluded that AtHAK5 is a root plasma membrane uptake mechanism for K(+) and Cs(+) under conditions of low K(+ availability.
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The Arabidopsis cax1 Mutant Exhibits Impaired Ion Homeostasis, Development, and Hormonal Responses and Reveals Interplay among Vacuolar Transporters
Ninghui Cheng,Jon K. Pittman,Bronwyn J. Barkla,Toshiro Shigaki,Kendal D. Hirschi,Kendal D. Hirschi,Kendal D. Hirschi +6 more
TL;DR: It is proposed that CAX1 regulates myriad plant processes and the observed phenotypes with regard to the compensatory alterations in other transporters are discussed, including auxin-regulated promoter-reporter gene fusion.
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Plant Defense Response to Fungal Pathogens (Activation of Host-Plasma Membrane H+-ATPase by Elicitor-Induced Enzyme Dephosphorylation)
TL;DR: Effects of guanidine nucleotide analogs and mastoparan on the ATPase activity suggested the role of GTP-binding proteins in mediating the putative elicitor-receptor binding, resulting in activation of a phosphatase(s), which in turn stimulates the plasma membrane H+-ATPase by dephosphorylation.
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Tonoplast Na+/H+ Antiport Activity and Its Energization by the Vacuolar H+-ATPase in the Halophytic Plant Mesembryanthemum crystallinum L.
TL;DR: The close correlation between increased Na+/H+ antiport and H+-ATPase activities in response to salt treatment suggests that accumulation of the very high concentrations of vacuolar Na+ found in M. crystallinum is energized by the H+ electrochemical gradient across the tonoplast.