The study demonstrates that plasmodesmata‑located protein 5 (PDLP5) interacts with plasma membrane intrinsic proteins (PIPs) to inhibit H2O2 transport across the plasma membrane in Arabidopsis. Overexpression of PDLP5 reduces H2O2 uptake and diminishes H2O2‑induced root growth inhibition, whereas pdlp5 mutants show enhanced sensitivity, with PIP2;5 identified as a key target of this regulation.

The study investigated the role of the ABA transporter NPF4.6 in Arabidopsis thaliana by analyzing loss-of-function mutants under steady and fluctuating light. Mutants displayed faster stomatal opening, higher CO2 assimilation, and increased shoot biomass under well‑watered, dynamic‑light conditions, while showing no advantage under drought stress, indicating NPF4.6 fine‑tunes stomatal kinetics in variable light environments.

The study used Arabidopsis thaliana mutants with low (vtc2, vtc4) and high (vtc2/OE-VTC2) ascorbate levels to examine how ascorbate concentration affects gene expression and cellular homeostasis. Transcriptomic analysis revealed that altered ascorbate levels modulate defense and stress pathways, and that TAA1/TAR2‑mediated auxin biosynthesis is required for coping with elevated ascorbate in a light‑dependent manner.

The study evaluated how light, vapor pressure deficit, and temperature affect carbon assimilation in four Brazilian Saccharum officinarum varieties over a 530‑day field trial, using diurnal measurements and statistical modeling. Polynomial and multiple linear regression models accurately predicted photosynthetic rates, identifying optimal conditions (PAR ~1800 µmol m⁻² s⁻¹, VPD 2.34 kPa, temperature ~32.5 °C) and explaining up to 60% of the variability.