Functional Characterization of Stress-Resistance Regulators in Maize

A Special Issue of Agronomy (ISSN 2073-4395) belonging to the section "Crop Breeding and Genetics".

Deadline for manuscript submissions: 31 December 2026 | Viewed by 585

Editors

College of Agronomy, Henan Agricultural University, Zhengzhou 450002, China
Interests: physiological and molecular mechanisms underlying plant stress tolerance

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Guest Editor
College of Agronomy, Henan Agricultural University, Zhengzhou 450002, China
Interests: identification and validation of stress-responsive genes in maize; plant disease resistance and immunity

Special Issue Information

Dear Colleagues,

Maize (Zea mays L.) is a major staple crop worldwide. However, various abiotic and biotic stresses, including drought, salinity, extreme temperatures, and diseases, significantly limit maize production. The discovery of candidate regulators and the understanding the genetic basis of stress resistance is essential for developing stress-tolerant varieties.

This Special Issue focuses on the functional characterization of stress-resistance regulators in maize, including candidate genes, peptides, proteins and metabolites. In addition, we invite studies that elucidate the molecular mechanisms and regulatory pathways involved in stress tolerance.

We encourage the use of modern approaches such as CRISPR/Cas9 gene editing, transcriptomics, proteomics, metabolomics, and QTL mapping to identify and validate regulators.

We welcome original research articles, reviews, and short communications that functionally characterize candidate regulators, analyze mutant phenotypes, or investigate the genetic architecture of stress resistance in maize.

Dr. Lei Tian
Dr. Shunxi Wang
Guest Editors

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Keywords

  • maize
  • biotic stress tolerance
  • abiotic stress tolerance
  • functional genomics
  • gene editing
  • molecular breeding
  • functional characterization
  • candidate gene validation

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Published Papers (1 paper)

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Research

17 pages, 13089 KB  
Article
Genome-Wide Identification, Evolutionary Analysis, and Expression Profiling of the NSUN Gene Family in Maize Reveal Candidate Genes for Stress Adaptation and Agronomic Improvement
by Xiaopeng Sun, Yifei Li, Pei Zhang, Haitao Jia, Feng Teng, Shilong Zhang, Wenqiang Li and Zhenghua He
Agronomy 2026, 16(15), 1499; https://doi.org/10.3390/agronomy16151499 - 4 Aug 2026
Viewed by 315
Abstract
The NSUN family is essential for RNA 5-methylcytosine modification (m5C) in eukar-yotes. However, no NSUN genes have been identified in maize, and the characteristics of ZmNSUN genes remain unexplored. Here, we performed a comprehensive in-vestigation of NSUN genes across seven Poaceae species. Our [...] Read more.
The NSUN family is essential for RNA 5-methylcytosine modification (m5C) in eukar-yotes. However, no NSUN genes have been identified in maize, and the characteristics of ZmNSUN genes remain unexplored. Here, we performed a comprehensive in-vestigation of NSUN genes across seven Poaceae species. Our analysis identified a total of 63 Poaceae NSUN genes, including eight ZmNSUN genes in maize. Phylogenetic and feature analyses classified the Poaceae NSUNs into six subgroups (SGs), suggest-ing that the divergence of these SGs may have occurred prior to the divergence between plants and animals. Expression profiling indicated that ZmNSUN genes are generally repressed by heat stress. Co-expression network analysis suggested potential roles of ZmNSUN genes in maize development, and expression quantitative trait locus (eQTL) analysis results demonstrated that expression levels of multiple ZmNSUN genes are significantly associated with maize agronomic traits. Collectively, these findings provide novel insights into the evolutionary dynamics of the NSUN family and highlight specific ZmNSUN genes as promising candidates for molecular breeding to improve maize yield and stress adaptability. Full article
(This article belongs to the Special Issue Functional Characterization of Stress-Resistance Regulators in Maize)
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