Isoforms of cysteine peptidases and osmotins instead of chitinases and peptidase inhibitors drive antifungal activity but occur as distinct isoforms in latex and callus tissues of Calotropis procera
Marcio Viana Ramos, Rayanne Farias da Silva, Cristina P. S. Carvalho, Arlete Aparecida Soares, José Francisco C. Gonçalves, Patrícia M. S. Carvalho, Pedro A. V. R. Júnior, Joao Maria Matos-Neto, Cléverson D.T. Freitas
A plant's wound-sealing liquid can fight fungi, but when researchers grew plant tissue outside that liquid, the defense survived in one species and vanished in another. The surprise was not just which proteins worked, but where their versions came from. What if a plant tissue that lacks latex can still make a powerful antifungal mixture, but uses different molecular versions of the same defense proteins? That is the puzzle this study tests.