ArticleJournal of experimental botany2015
Asymmetric transcriptomic signatures between the cob and florets in the maize ear under optimal- and low-nitrogen conditions at silking, and functional characterization of amino acid transporters ZmAAP4 and ZmVAAT3.
Article in Journal of experimental botany, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers.
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24 citing papers in PubMed, 44 citations in OpenAlex.
- Regulating female ear morphogenesis in maize by uniconazole and 5-aminolevulinic acid for yield improvement.Scientific reports · 2026Article
- Physiological and transcriptomic analyses for assessing the effects of uniconazole on female ear development in maize (Zea Mays L.).BMC plant biology · 2026Article
- Designing a nitrogen-efficient cold-tolerant maize for modern agricultural systems.The Plant cell · 2025Review
- ZmCCD8 regulates sugar and amino acid accumulation in maize kernels via strigolactone signalling.Plant biotechnology journal · 2025Article
- Comparative transcriptome analysis identified candidate genes associated with kernel row number in maize.PeerJ · 2025Article
- Nitrogen-dependent binding of the transcription factor PBF1 contributes to the balance of protein and carbohydrate storage in maize endosperm.The Plant cell · 2023Article
- Article
- Comparative Transcriptome Analysis Reveals Common and Developmental Stage-Specific Genes That Respond to Low Nitrogen in Maize Leaves.Plants (Basel, Switzerland) · 2022Article
- Genome-Wide Identification and Functional Analysis of Lysine Histidine Transporter (LHT) Gene Families in Maize.Genetics research · 2022Article
- Article
- Genome-Wide Analysis ofPlants (Basel, Switzerland) · 2021Article
- Genetic engineering to improve essential and conditionally essential amino acids in maize: transporter engineering as a reference.Transgenic research · 2021Article
- Comparative Transcriptome Profiling Reveals Defense-Related Genes AgainstFrontiers in plant science · 2021Article
- Heat Stress After Pollination Reduces Kernel Number in Maize by Insufficient Assimilates.Frontiers in genetics · 2021Article
- Article
- Amino Acid Transporters in Plants: Identification and Function.Plants (Basel, Switzerland) · 2020Review
- OsMYB80 Regulates Anther Development and Pollen Fertility by Targeting Multiple Biological Pathways.Plant & cell physiology · 2020Article
- Genetic control of root anatomical plasticity in maize.The plant genome · 2020Article
- Glutamine application promotes nitrogen and biomass accumulation in the shoot of seedlings of the maize hybrid ZD958.Planta · 2020Article
- Warming and elevated COScientific reports · 2019Article
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7 authors at 1 institution in 1 country.
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No grant is acknowledged in the PubMed record.
Abstract
Coordinated functioning of the cob and florets of the maize ear confers grain yield. The cob is critical for carbon partitioning and assimilated nitrogen (N) supply for grain development. However, molecular recognition of the cob and peripheral florets, characterization of genes mediating translocation of N assimilates, and responses of these two tissues to low N (LN) remain elusive. Transcriptional profiling of the ear of a maize hybrid at silking in the field revealed 1864 differentially expressed genes between the cob and florets, with 1314 genes up-regulated in the cob and 550 genes up-regulated in florets. The cob was characterized by striking enrichment of genes that are involved in carbon/N transport and metabolism, consistent with the physiological role of the cob in carbon/N storage and transfer during ear development. The florets were characterized by enrichment of hormone signalling components and development related genes. We next examined the response of the cob and florets to LN stress. LN caused differential expression of 588 genes in the cob and only 195 genes in the florets, indicating that the cob dominated the response of the ear to LN at the transcriptional level. LN caused comprehensive alterations such as carbon/N metabolism or partitioning, hormone signalling and protein phosphorylation in terms of gene expression in the cob and/or florets. Fourteen genes responsive specifically to LN provided potential molecular markers for N-efficient maize breeding. We further functionally characterized two newly identified broad-spectrum amino acid transporters, ZmAAP4 and ZmVAAT3, that showed distinct expression patterns in the cob and florets and potentially important roles in amino-N mobilization in the ear. While both proteins could transport various amino acids into yeast or Arabidopsis cells, ZmAAP4 appeared to have higher efficiencies than ZmVAAT3 in transporting seven out of 22 examined amino acids.
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