The peptide hormone PjCLE1 stimulates haustorium formation in the parasitic plant Phtheirospermum japonicum.

ABSTRACT: Phtheirospermum japonicum is a hemiparasitic plant of the Orobanchaceae, the largest family of parasitic plants. It extracts water and nutrients from other plants through haustoria along its roots. Haustoriogenesis, the formation of haustoria, is initiated by host-derived haustorium-inducing factors (HIFs). The first step in haustoriogenesis is the development of parasitically inactive protohaustoria. Here, we report that an endogenous peptide hormone, CLAVATA3/Embryo Surrounding Region 1 (PjCLE1), is sufficient to induce protohaustorium formation. PjCLE1 hyperactivated HIF-responses and caused prolific protohaustoria formation. PjCLE1 expression and activation by the subtilisin-type protease PjSBT1.2.3 occur in fully developed, mature haustoria, suggesti

SUBMITTER: Greifenhagen A 

PROVIDER: S-EPMC11494319 | biostudies-literature | 2024 Oct

REPOSITORIES: biostudies-literature