Light modulates organ-specific gibberellin–abscisic acid crosstalk during drought response in Arabidopsis thaliana
Tereza Miksteinová, Marek Szecówka, Ivan Petřík, Terezie Urbanová, Tereza Trávníčková, Martina Špundová, Martin Fellner, Peter Hedden · 2026
Read Light modulates organ-specific gibberellin–abscisic acid crosstalk during drought response in Arabidopsis thaliana by Tereza Miksteinová, Marek Szecówka, Ivan Petřík, Terezie Urbanová, Tereza Trávníčková, Martina Špundová, Martin Fellner, Peter Hedden (2026) in the Tower of Babel, a free online library of public-domain works preserved in clean, searchable text. No sign-up. The full text is served as a plain-text file at a predictable URL, where text is present: https://antarctic-labs.com/tower-of-babel/pmc-13676654.txt.
Description
Tereza Miksteinová and seven colleagues show that light changes how a model plant balances two hormones during drought. Gibberellins drive growth adjustments, while abscisic acid closes leaf pores to save water. The twenty twenty-six study grew Arabidopsis under short-day white light or continuous low blue light. Water was progressively restricted. Hormone levels, gene expression, and leaf temperature were tracked separately in shoots and roots.
Continuous blue light improved drought tolerance by reshaping both hormone pathways. Controlled breakdown of gibberellins, especially through two enzymes named GA2ox7 and GA2ox8, proved important for pore regulation. Mutant plants lacking hormone functions confirmed the pathways' roles. The organ-specific pattern matters: roots and shoots negotiated the growth-versus-survival trade differently. The findings refine how scientists think about breeding drought-ready crops.
Catalog record
| CREATOR | Tereza Miksteinová, Marek Szecówka, Ivan Petřík, Terezie Urbanová, Tereza Trávníčková, Martina Špundová, Martin Fellner, Peter Hedden |
|---|---|
| YEAR | 2026 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 66 KB |
| VERSION | 1.0 |
| LICENSE | CC BY 4.0 |
| RIGHTS | CC BY |
| SOURCE | Europe PMC |