Chitin Triggers Calcium-Mediated Immune Response in the Plant Model Physcomitrella patens

• DOI: 10.1094/mpmi-03-20-0064-r
• Publication Date: 2020-04-02T20:47:07Z
• Authors: Giulia Galotto; Isidro Abreu; Catherine Sherman; Boyuan Liu; Manuel Gonzalez-G...; Luis Vidali
• Keywords: Physcomitrella patens

A characteristic feature of a plant immune response is the increase cytosolic calcium (Ca2+) concentration following infection, which results in downstream activation regulators. The bryophyte Physcomitrella patens has been shown to mount an when exposed bacteria, fungi, or chitin elicitation, manner similar one observed Arabidopsis thaliana. Nevertheless, whether P. microorganism exposure Ca2+ mediated currently unknown. Here, we show that plants treated with oligosaccharides exhibit oscillations, and ionophore can stimulate expression defense-related genes. Treatment also inhibition growth, be explained by depolymerization apical actin cytoskeleton tip growing cells. These suggest chitin-triggered oscillations are conserved were likely present common ancestor bryophytes vascular plants.