A non‐tandem CCCH‐type zinc‐finger protein, IbC3H18, functions as a nuclear transcriptional activator and enhances abiotic stress tolerance in sweet potato

• DOI: 10.1111/nph.15925
• Publication Date: 2019-05-15T17:06:03Z
• Authors: Huan Zhang; Xiaoru Gao; Yuhai Zhi; Xu Li; Qian Zhang; Jinbiao Niu; Jun Wang; Hong Zhai; Ning Zhao; Jigang Li; Qingchang Liu; Shaozhen He
• Keywords: Tandem

CCCH-type zinc-finger proteins play essential roles in regulating plant development and stress responses. However, the molecular functional properties of non-tandem (non-TZF) have been rarely characterized plants. Here, we report biological characterization a sweet potato non-TZF gene, IbC3H18. We show that IbC3H18 exhibits tissue- abiotic stress-specific expression, could be effectively induced by stresses, including NaCl, polyethylene glycol (PEG) 6000, H2 O2 abscisic acid (ABA) potato. Accordingly, overexpression led to increased, whereas knock-down resulted decreased tolerance salt, drought oxidation stresses. In addition, functions as nuclear transcriptional activator regulates expression range stress-responsive genes involved reactive oxygen species (ROS) scavenging, ABA signaling, photosynthesis ion transport pathways. Moreover, our data demonstrate physically interacts with IbPR5, IbPR5 enhances salt transgenic tobacco Collectively, indicate enhancing potato, which may serve candidate gene for use improving resistance crops.