The peptide hormone PjCLE1 stimulates haustorium formation in the parasitic plant Phtheirospermum japonicum
成果类型：
Article
署名作者：
Greifenhagen, Anne; Ruwe, Hannes; Zimmer, Victoria; Messerschmidt, Jana; Bhukya, Durga Prasad Naik; Kenea, Hawi Deressa; Schaller, Andreas; Spallek, Thomas
署名单位：
University Hohenheim; University of Gottingen
刊物名称：
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
ISSN/ISSBN：
0027-9724
DOI：
10.1073/pnas.2414582121
发表日期：
2024-10-15
关键词：
摘要：
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 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, suggesting that PjCLE1 acts as an internal signal produced by mature haustoria to stimulate additional protohaustorium formation for effective extraction of resources from hosts. PjCLE1 is similar in sequence to CLEs regulating nodulation in legumes and part of a regulatory system for haustoria formation in parasitic plants.