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The Phosphate Deprivation Response is Mediated by an Interaction between Brassinosteroid Signaling and Zinc in Tomato

Demirer, Gozde S. and Gibson, Donald J. and Yue, Xiaoyan and Pan, Kelly and Elishav, Eshel and Khandal, Hitaishi and Horev, Guy and Tarkowská, Danuše and Cantó-Pastor, Alex and Kong, Shuyao and Maloof, Julin and Savaldi-Goldstein, Sigal and Brady, Siobhan M. (2022) The Phosphate Deprivation Response is Mediated by an Interaction between Brassinosteroid Signaling and Zinc in Tomato. . (Unpublished)

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Phosphate is a necessary macronutrient for basic biological processes, plant growth, and agriculture. Plants modulate their root system architecture and cellular processes to adapt to phosphate deprivation albeit with a growth penalty. Excess application of phosphate fertilizer, on the other hand, leads to eutrophication and has a negative environmental impact. Moreover, phosphate mined from rock reserves is a finite and non-recyclable resource and its levels are nearing complete depletion. Here, we show that Solanum pennellii, a wild relative of tomato, is partially insensitive to phosphate deprivation. Furthermore, it mounts a constitutive response under phosphate sufficiency. We demonstrate that activated brassinosteroid signaling through a tomato BZR1 ortholog gives rise to the same constitutive phosphate deficiency response, which is dependent on zinc over-accumulation. Collectively, these results reveal an additional strategy by which plants can adapt to phosphate starvation.

Item Type:Report or Paper (Discussion Paper)
Related URLs:
URLURL TypeDescription Paper
Demirer, Gozde S.0000-0002-3007-1489
Yue, Xiaoyan0000-0001-7920-1734
Khandal, Hitaishi0000-0002-3899-4325
Horev, Guy0000-0002-6632-9795
Tarkowská, Danuše0000-0003-1478-1904
Cantó-Pastor, Alex0000-0001-8571-1116
Kong, Shuyao0000-0002-3124-8899
Maloof, Julin0000-0002-9623-2599
Savaldi-Goldstein, Sigal0000-0003-3458-5783
Brady, Siobhan M.0000-0001-9424-8055
Additional Information:The copyright holder for this preprint is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under a CC-BY-NC-ND 4.0 International license. We thank Tsuyoshi Nakagawa for the pGWB402 plasmid. GSD is supported by the Resnick Sustainability Institute Postdoctoral Fellowship. This work was funded by a BARD Research Grant Agreement No. IS4827-15 to SMB and SS-G. Additional support was provided by an HHMI Faculty Scholar and NSF 1856749, 2119820 and 1238243 and SS-G has received funding from the European Union's Horizon 2020 research and innovation program under the Grant Agreement No. [727929] (TOMRES). DT is grateful for financial support from European Regional Development Fund Project, Centre for Experimental Plant Biology No. CZ.02.1.01/0.0/0.0/16_019/0000738. The authors have declared no competing interest.
Group:Resnick Sustainability Institute
Funding AgencyGrant Number
Resnick Sustainability InstituteUNSPECIFIED
Binational Agricultural Research & Development Fund (BARD)IS4827-15
Howard Hughes Medical Institute (HHMI)UNSPECIFIED
European Research Council (ERC)727929
European Regional Development FundCZ.02.1.01/0.0/0.0/16_019/0000738
Record Number:CaltechAUTHORS:20230322-366963000.10
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:120325
Deposited By: George Porter
Deposited On:28 Mar 2023 03:17
Last Modified:28 Mar 2023 03:17

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