MHZ4

2015-01-20 | Categories genes | Tags root growth ethylene map-based cloning ABA ethylene response branching adventitious root formation yield

Information
- Symbol: MHZ4
- MSU: LOC_Os01g03750
- RAPdb: Os01g0128300
Publication
- Ethylene-Induced Inhibition of Root Growth Requires Abscisic Acid Function in Rice Oryza sativa L. Seedlings, 2014, PLoS Genet.
Genbank accession number
Key message
- Ethylene-Induced Inhibition of Root Growth Requires Abscisic Acid Function in Rice (Oryza sativa L.) Seedlings
- MHZ4 was identified through map-based cloning and encoded a chloroplast-localized membrane protein homologous to Arabidopsis thaliana (Arabidopsis) ABA4, which is responsible for a branch of ABA biosynthesis.
- MHZ4 mutation reduced ABA level, but promoted ethylene production. Ethylene induced MHZ4 expression and promoted ABA accumulation in roots.
- MHZ4 overexpression resulted in enhanced and reduced ethylene response in roots and coleoptiles, respectively.
- At mature stage, mhz4 mutation affects branching and adventitious root formation on stem nodes of higher positions, as well as yield-related traits.
Connection
- MHZ4, OsEIN2, Ethylene-Induced Inhibition of Root Growth Requires Abscisic Acid Function in Rice Oryza sativa L. Seedlings, In coleoptile, MHZ4-dependent ABA pathway acts at or upstream of OsEIN2 to negatively regulate coleoptile ethylene response, possibly by affecting OsEIN2 expression.

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