Accession PRJCA002027
Title RNA-seq analysis of ethylene related genes in rice
Relevance Agricultural
Data types Transcriptome or Gene expression
Raw sequence reads
Organisms Oryza sativa
Description Ethylene plays essential roles in rice adaptive responses to water-saturating environment, while knowledge about its signaling mechanism remains limited. Here, we discovered that MHZ1 positively modulates root ethylene response through analysis of a rice ethylene-response mutant mhz1. MHZ1 encodes the rice histidine kinase OsHK1. MHZ1 autophosphorylates at the conserved histidine and can transfer the phosphoryl signal to response regulator OsRR21 via phosphotransfer proteins OsAHP1/2. This phosphorelay pathway is required for root ethylene response. Ethylene receptor OsERS2, via GAF domain, physically interacts with MHZ1 to inhibit its kinase activity. Genetic analyses support that MHZ1 acts at the ethylene receptor level and the MHZ1-mediated pathway works together with OsEIN2-mediated pathway to regulate root growth. Our results suggest that MHZ1 mediates ethylene response in a way partially independent of OsEIN2, and is directly inhibited by ethylene receptors. Our study reveals a previously unidentified mechanism of ethylene signaling for root growth regulation.
Sample scope Multiisolate
Release date 2019-12-18
Grants
Agency program Grant ID Grant title
National Natural Science Foundation of China (NSFC) 31530004
National Natural Science Foundation of China (NSFC) 31670274
National Natural Science Foundation of China (NSFC) 31600980
the National Key Basic Research Project 2015CB755702
Submitter Jinsong    Zhang  (jszhang@genetics.ac.cn)
Organization Institute of Genetics and Developmental Biology Chinese Academy of Sciences
Submission date 2019-12-13

Project Data

Resource name Description
BioSample (24)  show -
GSA (1) -
CRA002197 RNA-seq analysis of ethylene related genes in rice