Genetic Research on Maize Kernel Development 

A special issue of Genes (ISSN 2073-4425). This special issue belongs to the section "Plant Genetics and Genomics".

Deadline for manuscript submissions: 20 June 2024 | Viewed by 420

Special Issue Editors


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Guest Editor
School of Life Science, University of Science and Technology of China, Hefei, China
Interests: grain filling development; gene regulatory mechanism; maternal-to-filial nutrient transport

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Guest Editor
State Key Laboratory of Maize Bio-Breeding, National Maize Improvement Center, Department of Plant Genetics and Breeding, China Agricultural University, Beijing, China
Interests: maize breeding; genetics; genomics
Special Issues, Collections and Topics in MDPI journals

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Guest Editor
Frontiers Science Center for Molecular Design Breeding, State Key Laboratory of Maize Bio-Breeding, National Maize Improvement Center, Department of Plant Genetics and Breeding, China Agricultural University, Beijing, China
Interests: genome editing; maize breeding; genetics; maize kernel development

Special Issue Information

Dear Colleagues,

Maize is one of the most important cereal crops worldwide and is used in the production of food, feed, and industrial products. The development of high-yield and high-quality maize kernels with biofortification, low toxicity, and seed vigor is of paramount importance for ensuring global food security and agricultural sustainability.

Recent advancements in genetics, spatial transcriptomics, and genomic technologies have led to significant breakthroughs in our understanding of the complex genetic networks involved in maize kernel development. As a result, we can now explore the underlying molecular mechanisms that control maize kernel development and identify key genetic regulators essential for improving maize yield and quality.

This Special Issue aims to feature cutting-edge research on various aspects of maize kernel development. We welcome researchers from all over the world to contribute their original research articles, reviews, and perspectives to this issue. The topics covered include but are not limited to genetics, genomics, breeding, and molecular mechanisms. By sharing the latest findings and advancements in this field, we aspire to establish a comprehensive platform for researchers to further our understanding of maize kernel development.

Let us join forces in unraveling the mysteries behind maize kernel development and pave the way for the development of high-quality maize seeds, which will have a significant impact on global food security and agricultural sustainability.

Dr. Zhiyong Zhang
Dr. Weibin Song
Dr. Chao Bian
Guest Editors

Manuscript Submission Information

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Keywords

  • maize
  • seed development
  • endosperm
  • embryo

Published Papers (1 paper)

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Research

17 pages, 2487 KiB  
Article
Central Roles of ZmNAC128 and ZmNAC130 in Nutrient Uptake and Storage during Maize Grain Filling
by Di Peng, Shuxing Pan, Xin Du, Erwang Chen, Junjun He and Zhiyong Zhang
Genes 2024, 15(6), 663; https://doi.org/10.3390/genes15060663 - 23 May 2024
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Abstract
Grain filling is critical for determining yield and quality, raising the question of whether central coordinators exist to facilitate the uptake and storage of various substances from maternal to filial tissues. The duplicate NAC transcription factors ZmNAC128 and ZmNAC130 could potentially serve as [...] Read more.
Grain filling is critical for determining yield and quality, raising the question of whether central coordinators exist to facilitate the uptake and storage of various substances from maternal to filial tissues. The duplicate NAC transcription factors ZmNAC128 and ZmNAC130 could potentially serve as central coordinators. By analyzing differentially expressed genes from zmnac128 zmnac130 mutants across different genetic backgrounds and growing years, we identified 243 highly and differentially expressed genes (hdEGs) as the core target genes. These 243 hdEGs were associated with storage metabolism and transporters. ZmNAC128 and ZmNAC130 play vital roles in storage metabolism, and this study revealed two additional starch metabolism-related genes, sugary enhancer1 and hexokinase1, as their direct targets. A key finding of this study was the inclusion of 17 transporter genes within the 243 hdEGs, with significant alterations in the levels of more than 10 elements/substances in mutant kernels. Among them, six out of the nine upregulated transporter genes were linked to the transport of heavy metals and metalloids (HMMs), which was consistent with the enrichment of cadmium, lead, and arsenic observed in mutant kernels. Interestingly, the levels of Mg and Zn, minerals important to biofortification efforts, were reduced in mutant kernels. In addition to their direct involvement in sugar transport, ZmNAC128 and ZmNAC130 also activate the expression of the endosperm-preferential nitrogen and phosphate transporters ZmNPF1.1 and ZmPHO1;2. This coordinated regulation limits the intake of HMMs, enhances biofortification, and facilitates the uptake and storage of essential nutrients. Full article
(This article belongs to the Special Issue Genetic Research on Maize Kernel Development )
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