Gene Details:

• MSU gene ID: LOC_Os03g19427
• RAPdb gene ID: Os03g0307300
• Gene Symbol: OsNAS1
• Genome: MSU7 ,  IRGSP-1.0
• Species: Oryza sativa

Functional Descriptions:

• RNA interference of OsIRO2 in transgenic rice showed that ethylene acted via this transcription factor to induce the expression of OsNAS1, OsNAS2, OsYSL15, and OsIRT1.
• Three rice nicotianamine synthase genes, OsNAS1, OsNAS2, and OsNAS3 are expressed in cells involved in long-distance transport of iron and differentially regulated by iron.
• In Fe-deficient plants, OsNAS1 and OsNAS2 were expressed in the vascular bundles of green leaves and in all cells of leaves showing severe chlorosis.
• OsNAS1 and OsNAS2 transcripts were detected in Fe-sufficient roots but not in leaves, and levels of both increased markedly in both roots and leaves in response to Fe deficiency.
• Promoter-GUS analysis revealed that OsNAS1 and OsNAS2 were expressed in Fe-sufficient roots in companion cells and pericycle cells adjacent to the protoxylem.
• With Fe deficiency, OsNAS1 and OsNAS2 expression extended to all root cells along with an increase in phytosiderophore secretion.

Function-related keywords:

• transcription-factor ,  iron ,  vascular-bundle ,  ethylene ,  root ,  xylem

Literature:

• Ethylene is involved in the regulation of iron homeostasis by regulating the expression of iron-acquisition-related genes in Oryza sativa .  DOI:  10.1093/jxb/erq301 ;  PMID:  21112958
• Isolation and characterization of IRO2, a novel iron-regulated bHLH transcription factor in graminaceous plants .  DOI:  10.1093/jxb/erl054 ;  PMID:  16887895
• A receptor-like protein RMC is involved in regulation of iron acquisition in rice .  DOI:  10.1093/jxb/ert290 ;  PMID:  24014863
• Three rice nicotianamine synthase genes, OsNAS1, OsNAS2, and OsNAS3 are expressed in cells involved in long-distance transport of iron and differentially regulated by iron .  DOI:  10.1046/j.1365-313x.2003.01878.x ;  PMID:  14617093
• The rice transcription factor IDEF1 is essential for the early response to iron deficiency, and induces vegetative expression of late embryogenesis abundant genes .  DOI:  10.1111/j.1365-313X.2009.04015.x ;  PMID:  19737364
• OsIRO2 is responsible for iron utilization in rice and improves growth and yield in calcareous soil .  DOI:  10.1007/s11103-011-9752-6 ;  PMID:  21331630
• Comparative transcriptome profile analysis of rice varieties with different tolerance to zinc deficiency .  DOI:  10.1111/plb.13227 ;  PMID:  33296551

Related News:

Gene Resources:

• NCBI ID: AK112069
• UniProt accessions:

Sequences: