Gene Details:

• Gene ID: TraesCS1D02G155200
• Gene Symbol: TaHB-D2
• Gene Name: HOMEOBOX DOMAIN-D2
• Genome: Chinese_Spring1.0
• Species: Triticum aestivum

Functional Descriptions:

• MicroRNA-resistant alleles of HOMEOBOX DOMAIN-2 modify inflorescence branching and increase grain protein content of wheat.
• Higher HB-2 expression is associated with modified leaf and vascular development and increased amino acid supply to the inflorescence during grain development.
• The spatiotemporal expression pattern is consistent with HB-2 performing a role during spikelet formation, including stages of inflorescence development critical for paired spikelet production.
• These results show that paired spikelet formation is promoted by increased expression of HB-2 homeologs on the A and D subgenomes, which can be facilitated by modifying bases in the miR165/166 complementary site.
• Increased HB-2 expression facilitates higher grain protein content.
• Together, these results suggest that increased expression of HB-2 facilitates the production of grain with more protein by modifying vascular development, which increases the supply of assimilates to the inflorescence and developing grain.

Function-related keywords:

• leaf ,  development ,  spikelet ,  grain ,  leaf-development ,  inflorescence ,  branching ,  vascular-development ,  resistant ,  spikelet-development ,  grain-protein-content ,  grain-protein ,  inflorescence-development

Literature:

• MicroRNA-resistant alleles of HOMEOBOX DOMAIN-2 modify inflorescence branching and increase grain protein content of wheat.   DOI:  10.1126/sciadv.abn5907 ;  PMID:  35544571

Related News:

Gene Resources:

• NCBI ID: KAF6994629
• UniProt accessions: A0A3B5ZS95

Sequences: