Exploring Mechanisms and Integrating Advanced Genetic Approaches in Enhancing Barley Resilience

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

Deadline for manuscript submissions: 31 July 2026 | Viewed by 935

Special Issue Editors


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Guest Editor
Agricultural College, Yangzhou University, Yangzhou 225009, China
Interests: barley; waterlogging; salt stress; molecular mechanisms
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E-Mail Website
Guest Editor
Agricultural College, Yangzhou University, Yangzhou 225009, China
Interests: abiotic and biotic stress; genetic mechanisms of important traits; variety breeding; barley
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Global climate change will increase the frequency and intensity of extreme weather events across many regions, leading to significant crop yield losses and threatening global food security. To meet the nutritional demands of a growing population by 2050, crop production must become both more abundant and more resilient under increasing climatic stress. A critical step toward developing stress-tolerant crop varieties is understanding the mechanisms that enable plants to withstand abiotic stresses. Barley (Hordeum vulgare L.), one of the earliest domesticated crops in human history, has been cultivated worldwide for use as livestock feed and as a key raw material in the brewing industry. Barley breeders have increasingly adopted advanced technologies, including induced mutation, transgenesis, marker-assisted selection, genomic selection, site-directed mutagenesis, and, most recently, machine learning to enhance barley traits. This Special Issue of Plants aims to uncover underexplored mechanisms of abiotic stress tolerance in barley and to highlight cutting-edge genetic strategies for its improvement.

Dr. Feifei Wang
Prof. Dr. Rugen Xu
Guest Editors

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Keywords

  • barley 
  • abiotic stress 
  • tolerant mechanism 
  • genetic approaches

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Published Papers (1 paper)

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Research

16 pages, 1362 KB  
Article
Strong Root System Enhances Waterlogging Resilience in Barley (Hordeum vulgare) at the Early Stage Stress
by Yu Tian, Li Cao, Yuening Xin, Liang Zhu, Zhenxiang Zhou, Baojian Guo, Chao Lv, Juan Zhu, Rugen Xu and Feifei Wang
Plants 2026, 15(1), 134; https://doi.org/10.3390/plants15010134 - 2 Jan 2026
Cited by 1 | Viewed by 751
Abstract
Barley (Hordeum vulgare L.) is resistant to salt, drought and low temperature stress but sensitive to waterlogging stress. For now, little is known in waterlogging stress about the molecular mechanisms underlying the regulation of hormonal pathways in barley roots. In this study, [...] Read more.
Barley (Hordeum vulgare L.) is resistant to salt, drought and low temperature stress but sensitive to waterlogging stress. For now, little is known in waterlogging stress about the molecular mechanisms underlying the regulation of hormonal pathways in barley roots. In this study, the effects of waterlogging stress on 33 genotypes during the whole growth stages were comprehensively assessed. Then, the root morphology, hormone content and relative root development gene expressions were investigated in the most waterlogging-sensitive and -tolerant genotypes. We found waterlogging-tolerant genotypes (four representative genotypes) increased root length, forks, surface and project area traits at the early stage of waterlogging stress; meanwhile, these root traits were reduced in waterlogging-sensitive genotypes (four representative genotypes) because of ABA and ethylene inhibition. Furthermore, waterlogging-tolerant barley genotypes, respectively, induced and inhibited the positive (TCP20 and PLT2) and negative (SHY2 and PILS2) regulated gene’s expressions that controlled the meristem growth at the root tips to cope with waterlogging stress. In addition, our results were consistent with the hypothesis that waterlogging-tolerant barley genotypes can simultaneously upregulate GA levels and downregulate ethylene accumulation, which may induce the expression of SHR and SCR genes and enhance root growth under waterlogging stress. This research lays a foundation for the subsequent screening and breeding of waterlogging-tolerant genotypes and the exploration of waterlogging-tolerant mechanisms in barley. Full article
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