Enhancing Multiple Stress Tolerance in Maize: Genetic and Agronomic Approaches

A special issue of Plants (ISSN 2223-7747). This special issue belongs to the section "Plant Genetics, Genomics and Biotechnology".

Deadline for manuscript submissions: 30 June 2026 | Viewed by 1001

Special Issue Editors


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Guest Editor
Faculty of Agricultural and Food Sciences and Environmental Management, University of Debrecen, H-4032 Debrecen, Hungary
Interests: adaptability; biotic stress; food security; maize production; yield stability
Special Issues, Collections and Topics in MDPI journals

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Guest Editor
Institute of Land Use, Engineering and Precision Farming Technology, Faculty of Agricultural and Food Sciences and Environmental Management, University of Debrecen, H-4032 Debrecen, Hungary
Interests: early-stage plant stress detection; fertilization strategies; nutrient uptake dynamics; nutrient use efficiency; plant health; plant nutrition; precision agriculture; smart plant stress diagnostics
Special Issues, Collections and Topics in MDPI journals

E-Mail Website
Guest Editor
Institute of Land Use, Engineering and Precision Farming Technology, Faculty of Agricultural and Food Sciences and Environmental Management, University of Debrecen, H-4032 Debrecen, Hungary
Interests: abiotic stress; fertilization; genotype evaluation; irrigation strategies; remote sensing
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Maize, one of the world’s most vital staple crops, is increasingly challenged by the combined impacts of drought, heat, salinity, and nutrient deficiencies—often occurring simultaneously. Enhancing tolerance to multiple abiotic and biotic stresses is therefore critical to securing maize productivity under the growing unpredictability of global climate change.

This Special Issue focuses on recent advances in genetic and agronomic strategies aimed at improving maize resilience to complex stress environments. Contributions will highlight the integration of traditional breeding with modern genomics, gene editing, and phenotyping technologies, as well as innovative agronomic practices that synergize with genetic improvements. By unravelling the physiological, molecular, and ecological mechanisms that underpin maize stress tolerance, this collection aims to inform sustainable crop improvement strategies tailored to diverse agroecological zones.

Original research and reviews focusing on genetic mapping, functional genomics, stress physiology, breeding innovations, and field-based agronomy are welcome to advance maize resilience and productivity in the face of mounting environmental pressures

Prof. Dr. János Nagy
Dr. Csaba Bojtor
Dr. Árpád Illés
Guest Editors

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Keywords

  • maize
  • stress tolerance
  • abiotic stress
  • genetic improvement
  • agronomic practices
  • climate resilience
  • drought tolerance
  • salinity stress
  • crop breeding
  • genomic tools

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Published Papers (1 paper)

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Research

24 pages, 3453 KB  
Article
Effects of Calcium and Magnesium Fertilization on the Rhizosphere Bacterial Community Assembly and Specific Biomarkers in Rainfed Maize
by Zhaoquan He, Xue Shang and Xiaoze Jin
Plants 2026, 15(1), 60; https://doi.org/10.3390/plants15010060 - 24 Dec 2025
Viewed by 620
Abstract
This study investigated the effects of varying levels and combinations of calcium (Ca) and magnesium (Mg) supplementation on the diversity, composition, and species differentiation of the rhizosphere soil bacterial community in rainfed maize, aiming to reveal their regulatory mechanisms on the rhizosphere micro-ecosystem. [...] Read more.
This study investigated the effects of varying levels and combinations of calcium (Ca) and magnesium (Mg) supplementation on the diversity, composition, and species differentiation of the rhizosphere soil bacterial community in rainfed maize, aiming to reveal their regulatory mechanisms on the rhizosphere micro-ecosystem. A field micro-plot experiment was conducted with seven treatments: low Ca (U), high Ca (V), low Mg (W), high Mg (X), low Ca and low Mg (Y), high Ca and high Mg (Z), and a control (K, no supplementation). The bacterial communities were analyzed using high-throughput sequencing of the 16S rRNA gene, and the data were processed using the QIIME2 pipeline, as well as multivariate statistical analyses, and LEfSe. The main results demonstrated that Ca and Mg supplementation significantly altered the rhizosphere bacterial community structure (beta-diversity). Analysis of Similarities (ANOSIM) indicated significant differences between treatments (R > 0.4, p < 0.01). LEfSe analysis successfully identified key biomarkers responsive to different treatments. For instance, high Ca treatment significantly enriched the genus Clostridium within the phylum Firmicutes, whereas high Mg treatment specifically enriched the genus Lysobacter. Furthermore, Ca-Mg interactions exhibited non-additive effects, and the coupled Ca-Mg supplementation treatments (Y, Z) formed unique species assemblages. As key environmental drivers, Ca and Mg supplementation specifically reshaped the rhizosphere bacterial community through “environmental filtering” in rainfed maize. This study provides a theoretical basis for understanding the microbiological pathways through which secondary element fertilizers influence soil health, offering practical implications for precisely managing rhizosphere micro-ecology through Ca and Mg supplementation to promote the sustainable development of dryland farming. Full article
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