CpARF2 and CpEIL1 interact to mediate auxin–ethylene interaction and regulate fruit ripening in papaya

• DOI: 10.1111/tpj.14803
• Publication Date: 2020-05-11T09:59:16Z
• Authors: Tao Zhang; Weijin Li; Ruxiu Xie; Ling Xu; Yan Zhou; Haili Li; Changchun Yuan; Xiaolin Zheng; Langtao Xiao; Kaidong Liu
• Keywords: Carica

Papaya (Carica papaya L.) is a commercially important fruit crop. Various phytohormones, particularly ethylene and auxin, control ripening. However, little known about the interaction between auxin signaling during ripening process. In present study, we determined that CpARF2 CpEIL1 mediates to regulate in papaya. We identified ethylene-induced response factor demonstrated it essential for interacts with an signal transcription CpEIL1, thus increasing CpEIL1-mediated of ripening-associated genes CpACS1, CpACO1, CpXTH12 CpPE51. Moreover, ubiquitinated by CpEBF1 degraded through 26S proteasome pathway. weakens CpEBF1-CpEIL1 interferes CpEBF1-mediated degradation promoting Therefore, functions as integrator auxin-ethylene regulates stabilizing protein transcriptional activity CpEIL1. To our knowledge, have revealed novel module CpARF2/CpEIL1/CpEBF1 fine-tune Manipulating this mechanism could help growers tightly prolong shelf life.