Plant Biology: Distinct New Players in Processing Peptide Hormones during Abscission.
Schuster M., van der Hoorn RAL.
Flower organ abscission in Arabidopsis is regulated by a peptide hormone that is released from its precursor by a network of redundant subtilases. An exciting new study describes how drought-induced flower abscission in tomato is regulated similarly, but distinctly via a single, different subtilase that releases a very different peptide hormone.