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The Plant Phototransduction Laboratory, led by Dr. Ma. Agustina Mazzella, recently published an article in Plant Physiology and Biochemistry on microtubule dynamics during apical hook curvature in Arabidopsis. This work was conducted in collaboration with the Molecular Recognition Biophysics Laboratory at the IBR in Rosario.

PHYTOCHROME INTERACTING FACTORS act upstream to coordinate microtubule dynamics and differential cell growth during Arabidopsis apical hook opening

N.B. Burachik, P. Vacs, F. Santin, M.A. Mazzella, N. González-Schain,

Plant Physiology and Biochemistry, https://doi.org/10.1016/j.plaphy.2026.111487.

HIGHLIGHTS:

• Cortical microtubule patterns precede differential growth during apical hook opening in the dark.

• PIFs couple microtubule organization with anisotropic cell expansion.

• RNA-seq analysis reveals PIF-associated changes in the expression of cell wall and microtubule motor genes.