Gene Details:

• Gene ID: Zm00001eb126890
• Gene Symbol: ZmNAC128 ZmNAC34 nactf128 nrp1
• Gene Name: no-apical-meristem-related protein1
• Genome: Zm-B73-REFERENCE-NAM-5.0
• Species: Zea mays

Functional Descriptions:

• ZmNAC128 and ZmNAC130 cooperate with O2 to facilitate endosperm filling, which involves nutrient uptake in the basal endosperm transfer layer (BETL) and the synthesis of zeins and starch in the starchy endosperm (SE).
• The transcription factors ZmNAC128 and ZmNAC130 coordinate with Opaque2 to promote endosperm filling in maize
• The gene-edited double mutant ZmNAC128 zmnac130 exhibits a poorly filled kernel phenotype such that the kernels have an inner cavity.
• The triple mutant ZmNAC128 zmnac130 o2 exhibits extremely poor endosperm filling, which results in more than 70% of kernel weight loss.
• ZmNAC128 and ZmNAC130 regulate the expression of the transporter genes sugars that will eventually be exported transporter 4c (ZmSWEET4c), sucrose and glucose carrier 1 (ZmSUGCAR1), and yellow stripe-like2 (ZmYSL2) and in turn facilitate nutrient uptake, while O2 plays a supporting role.

Function-related keywords:

• starch ,  transporter ,  endosperm ,  sucrose ,  sucrose-transporter

Literature:

• The transcription factors ZmNAC128 and ZmNAC130 coordinate with Opaque2 to promote endosperm filling in maize.   DOI:  10.1093/plcell/koad215 ;  PMID:  37542515
• Molecular mechanisms controlling grain size and weight and their biotechnological breeding applications in maize and other cereal crops.   DOI:  10.1016/j.jare.2023.09.016 ;  PMID:  37739122
• Maize transcription factor ZmNAC2 enhances osmotic stress tolerance in transgenic Arabidopsis.   DOI:  10.1016/j.jplph.2023.153948 ;  PMID:  36812721

Related News:

• The Plant Cell | 中国科学技术大学张志勇团队揭示玉米籽粒灌浆发育调控新机制
• PNAS | 两个NAC转录因子调控玉米种子淀粉和蛋白质的积累

Gene Resources:

• NCBI ID: LOC542131
• UniProt accessions: A0A060D1R6

Sequences: