Phosphate deprivation-induced changes in tomato are mediated by an interaction between brassinosteroid signaling and zinc

0575854 - ÚEB 2024 RIV GB eng J - Journal Article
Demirer, G. S. - Gibson, D. J. - Yue, X. - Pan, K. - Elishav, E. - Khandal, H. - Horev, G. - Tarkowská, Danuše - Cantó-Pastor, A. - Kong, S. - Manzano, C. - Maloof, J. N. - Savaldi-Goldstein, S. - Brady, S. M.
Phosphate deprivation-induced changes in tomato are mediated by an interaction between brassinosteroid signaling and zinc.
New Phytologist. Roč. 239, č. 4 (2023), s. 1368-1383. ISSN 0028-646X. E-ISSN 1469-8137
R&D Projects: GA MŠMT(CZ) EF16_019/0000738
Institutional support: RVO:61389030
Keywords : brassinosteroid signaling * interactions between nutrients and hormones * nutrient deprivation * phosphate * Solanum pennellii * tomato * zinc
OECD category: Plant sciences, botany
Impact factor: 9.4, year: 2022
Method of publishing: Open access
https://doi.org/10.1111/nph.19007

Inorganic phosphate (Pi) is a necessary macronutrient for basic biological processes. Plants modulate their root system architecture (RSA) and cellular processes to adapt to Pi deprivation albeit with a growth penalty. Excess application of Pi fertilizer, on the contrary, leads to eutrophication and has a negative environmental impact. We compared RSA, root hair elongation, acid phosphatase activity, metal ion accumulation, and brassinosteroid hormone levels of Solanum lycopersicum (tomato) and Solanum pennellii, which is a wild relative of tomato, under Pi sufficiency and deficiency conditions to understand the molecular mechanism of Pi deprivation response in tomato. We showed that S. pennellii 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 overaccumulation. Collectively, these results reveal an additional strategy by which plants can adapt to phosphate starvation.
Permanent Link: https://hdl.handle.net/11104/0345559