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 |