Integrative phenotyping analyses reveal the relevance of the phyB-PIF4 pathway in Arabidopsis thaliana reproductive organs at high ambient temperature.

In our study, hAT enhances root elongation in all genotypes, although the impact did not reach statistical significance, possibly due to sample size or resolution limitations. hAT prompts roots to prioritize elongation over lateral root development, resulting in a less dense but elongated root system.

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Notably, only the phyB mutant showed a highly significant increase in this trend (Table 2 ; Additional File 2 – Table S3 ).

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