The study characterizes the tomato class B heat shock factor SlHSFB3a, revealing its age‑dependent expression in roots and its role in enhancing lateral root density by modulating auxin homeostasis. Overexpression of SlHSFB3a increases lateral root emergence, while CRISPR‑mediated knockouts produce the opposite phenotype, indicating that SlHSFB3a regulates auxin signaling through repression of auxin repressors and activation of the ARF7/LOB20 pathway.

The study investigates how fluctuating light and suboptimal temperature affect the coordination between electron transport and CO₂ assimilation in maize (Zea mays). At room temperature, fluctuating light causes a decoupling of these processes, which is mitigated by large pools of C₄ metabolites, whereas low temperatures restore tighter coupling through feedback downregulation of electron transport and increased light saturation of CO₂ assimilation.

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.

Flavodiiron proteins (FLVs) from the moss Physcomitrium patens were stably expressed in Nicotiana tabacum, resulting in transgenic lines with markedly higher pseudo‑cyclic electron transport (PCET) rates. Under sudden light increases, FLV activity competed with cyclic electron transport, alleviating PSI acceptor‑side limitation and enhancing protection of the photosynthetic apparatus. These results demonstrate that FLVs can function effectively in an angiosperm crop under fluctuating light conditions.