Gene Details:

• Gene ID: Zm00001eb005840
• Gene Symbol: ZmCT2 ct2
• Gene Name: compact plant2
• Genome: Zm-B73-REFERENCE-NAM-5.0
• Species: Zea mays

Functional Descriptions:

• The maize heterotrimeric G protein α subunit COMPACT PLANT2 (ct2) functions with CLV receptors to regulate meristem development. In addition to the sole canonical Gα ct2, maize also contains three eXtra Large GTP-binding proteins (XLGs), which have a domain with homology to Gα as well as additional domains.
• For example, we show that expression of a constitutively active ct2 resulted in higher spikelet density and kernel row number, larger ear inflorescence meristems (IMs) and more upright leaves, all beneficial traits selected during maize improvement.
• We demonstrate that ct2 and XLGs have both redundant and specialized functions in regulating shoot development. Importantly, we show that a constitutively active Gα functioned as a weak allele, which introduced multiple desirable agronomic traits, such as improved kernel row number and reduced leaf angle.

Function-related keywords:

• leaf ,  development ,  spikelet ,  leaf-development ,  shoot ,  meristem ,  spikelet-meristem ,  inflorescence ,  spikelet-number ,  spikelet-development ,  leaf-angle ,  inflorescence-development ,  shoot-meristem

Literature:

• Role of heterotrimeric Gα proteins in maize development and enhancement of agronomic traits.   DOI:  10.1371/journal.pgen.1007374 ;  PMID:  29708966
• The G protein-coupled receptor COLD1 promotes chilling tolerance in maize during germination.   DOI:  10.1016/j.ijbiomac.2023.126877 ;  PMID:  37716664

Related News:

Gene Resources:

• NCBI ID: 100284718
• UniProt accessions: A0A1D6JQD6 ,  A0A1D6JQD7 ,  A0A1D6JQD9

Sequences: