OsZAS

• Symbol: OsZAS
• MSU: LOC_Os09g15240
• RAPdb: Os09g0321200

• Zaxinone synthase controls arbuscular mycorrhizal colonization level in rice., 2022, Plant J.

Genbank accession number

• The Oryza sativa (rice) carotenoid cleavage dioxygenase OsZAS was described to produce zaxinone, a plant growth-promoting apocarotenoid
• Overall, our results show that the genetic manipulation of OsZAS activity in planta leads to a different effect on AM symbiosis from that of exogenous zaxinone treatment, and demonstrate that OsZAS influences the extent of AM colonization, acting as a component of a regulatory network that involves SLs
• Moreover, exogenous treatment with the synthetic SL analog GR24 rescued the zas mutant mycorrhizal phenotype, indicating that the lower AM colonization rate of zas is caused by a deficiency in SLs at the early stages of the interaction, and indicating that during this phase OsZAS activity is required to induce SL production, possibly mediated by the Dwarf14-Like (D14L) signaling pathway

• D14L, OsZAS, Zaxinone synthase controls arbuscular mycorrhizal colonization level in rice., Moreover, exogenous treatment with the synthetic SL analog GR24 rescued the zas mutant mycorrhizal phenotype, indicating that the lower AM colonization rate of zas is caused by a deficiency in SLs at the early stages of the interaction, and indicating that during this phase OsZAS activity is required to induce SL production, possibly mediated by the Dwarf14-Like (D14L) signaling pathway
• OsPht1;11~OsPT11, OsZAS, Zaxinone synthase controls arbuscular mycorrhizal colonization level in rice., OsZAS is expressed in arbuscule-containing cells, and OsPT11prom::OsZAS transgenic lines, where OsZAS expression is driven by the OsPT11 promoter active in arbusculated cells, exhibit increased mycorrhization compared with the wild type
• OsZAS, OsZAS1b, ZAXINONE SYNTHASE 2 regulates growth and arbuscular mycorrhizal symbiosis in rice., The rice genome encodes three OsZAS homologs, called here OsZAS1b, OsZAS1c, and OsZAS2, with unknown functions
• OsZAS, OsZAS1c, ZAXINONE SYNTHASE 2 regulates growth and arbuscular mycorrhizal symbiosis in rice., The rice genome encodes three OsZAS homologs, called here OsZAS1b, OsZAS1c, and OsZAS2, with unknown functions
• OsZAS, OsZAS2, ZAXINONE SYNTHASE 2 regulates growth and arbuscular mycorrhizal symbiosis in rice., The rice genome encodes three OsZAS homologs, called here OsZAS1b, OsZAS1c, and OsZAS2, with unknown functions
• OsZAS, OsZAS2, ZAXINONE SYNTHASE 2 regulates growth and arbuscular mycorrhizal symbiosis in rice., In conclusion, OsZAS2 is a zaxinone-forming enzyme that, similar to the previously reported OsZAS, determines rice growth, architecture, and SL content, and is required for optimal mycorrhization