Plant Life: Integrating Multi-Omic Approaches from Molecules to Environment

A special issue of Life (ISSN 2075-1729). This special issue belongs to the section "Plant Science".

Deadline for manuscript submissions: 25 September 2026 | Viewed by 2290

Special Issue Editors

State Key Laboratory of Tree Genetics and Breeding, Research Institute of Tropical Forestry, Chinese Academy of Forestry, Guangzhou 510520, China
Interests: secondary metabolism; multi-omics; nitrogen metabolism; molecular biology; drought resistance
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Special Issue Information

Dear Colleagues,

Building on the success of the first edition, we can announce the second volume of this Special Issue, now expanded to be broader and more integrative in scope. This edition, titled "Plant Life: Integrating Multi-Omic Approaches from Molecules to Environment", will address the growing complexity of plant physiological research by incorporating diverse omic levels and cutting-edge technologies. We invite the submission of high-quality research articles, reviews, short communications, and reports that advance our understanding of plant physiology through multi-omic integration.

Plant physiology is governed by intricate interactions between genetic, epigenetic, and environmental factors, which collectively shape plant growth, development, and stress responses. Recent technological advancements have enabled deep exploration across multiple biological levels, from ions to ecosystems. This Special Issue will highlight studies that leverage a wide spectrum of omic approaches, including ionomics, genomics, transcriptomics, metabolomics, post-transcriptional regulation, proteomics, post-translational modifications, epigenomics, and single-cell analyses, to decipher physiological mechanisms. We encourage research that not only focuses on individual omic layers but also emphasizes their integration to provide a holistic view of plant function. Key research themes include, but are not limited to, the following:

  • Ionomic Level: Studies on the role of elemental composition and ion homeostasis in plant nutrition, signaling, and adaptation to environmental stresses such as salinity, heavy metals, or nutrient deficiencies;
  • Genomic Level: Research on genetic variation, genome architecture, gene families, and genome-editing applications (e.g., CRISPR/Cas9) for trait improvement or mechanistic insights into developmental processes;
  • Transcriptomic Level: Investigations into gene expression dynamics, alternative splicing, non-coding RNAs, and transcriptional networks underlying plant growth, development, and responses to biotic/abiotic stresses;
  • Metabolomic Level: Analyses of metabolic pathways, metabolite profiling, and flux analysis to link biochemical changes to physiological outcomes, such as in secondary metabolism or stress resilience;
  • Post-Transcriptional Level: Research on RNA processing, stability, and regulation by miRNAs, siRNAs, or other factors that influence gene expression beyond transcription;
  • Proteomic Level: Studies on protein expression, protein–protein interactions, and structural proteomics to elucidate functional mechanisms in signaling, metabolism, or stress adaptation;
  • Post-Translational Level: Research into modifications including phosphorylation, ubiquitination, or glycosylation, as well as their roles in regulating protein activity and cellular responses;
  • Epigenetic Level: Explorations of DNA methylation, histone modifications, and chromatin remodeling in gene regulation, memory responses, and transgenerational inheritance under environmental cues;
  • Single-Cell Level: Applications of single-cell omics (e.g., scRNA-seq, scATAC-seq) to resolve cellular heterogeneity in tissues, organs, or during development, providing unprecedented resolution in plant physiology.

We welcome contributions that employ innovative technologies such as multi-omic integration (e.g., combining genomics with metabolomics), advanced imaging, high-throughput sequencing, and computational modeling. Studies focusing on plant–environment interactions, including responses to climate change, pathogen attacks, symbiosis, or nutrient availability, are particularly encouraged. Additionally, we request papers that address physiological mechanisms in diverse plant species, ranging from crops to model organisms, with implications for agriculture, biotechnology, and ecosystem sustainability.

This Special Issue will feature up-to-date reviews and original research that bridge omic data with physiological phenotypes, fostering a mechanistic understanding of plant life. By bringing together experts in the field, we will showcase the latest advances, challenges, and future directions in plant physiology research.

Dr. Sen Meng
Dr. Fang He
Guest Editors

Manuscript Submission Information

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Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Life is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • plant physiology
  • multi-omics integration
  • ionomics
  • genomics
  • transcriptomics
  • metabolomics
  • proteomics
  • epigenetics
  • single-cell analysis
  • environmental stress
  • molecular mechanisms
  • systems biology

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Published Papers (4 papers)

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Research

16 pages, 8927 KB  
Article
Systematic Analysis of the Populus ADF Gene Family and the Expression Patterns Under Osmotic Stress
by Yanli Yang, Hailong An, Hui-Guang Li, Yuanlin Sun, Baozhen Feng and Peiqian Li
Life 2026, 16(5), 800; https://doi.org/10.3390/life16050800 (registering DOI) - 11 May 2026
Viewed by 242
Abstract
Actin Depolymerizing Factor (ADF) proteins are key regulators of actin cytoskeleton dynamics, mediating numerous essential plant life processes, including cell elongation, division, and signal transduction in response to environmental stress. Although ADF functions are well characterized in herbaceous plants, systematic analysis of poplar [...] Read more.
Actin Depolymerizing Factor (ADF) proteins are key regulators of actin cytoskeleton dynamics, mediating numerous essential plant life processes, including cell elongation, division, and signal transduction in response to environmental stress. Although ADF functions are well characterized in herbaceous plants, systematic analysis of poplar ADFs and their roles in osmotic stress response remains largely unexplored. In this study, we identified 14 PtADF genes in the Populus trichocarpa genome, mapped across ten distinct chromosomes. Phylogenetic analysis categorized all the ADFs into seven groups, with PtADFs displaying conserved motifs. PtADF gene family expansion was primarily attributed to whole-genome duplication (WGD) events. Evolutionary constraint analysis, evidenced by a Ka/Ks ratio < 1, indicated significant selective pressure on these genes. Promoter regions of PtADF genes were enriched with cis-acting elements responsive to hormones and stresses. Transcriptome profiling showed that five PtADF genes were significantly induced under drought stress. We then identified the homologous genes of PtADFs in P. euphratica, a Populus species with superior environmental stress adaptability, and qRT-PCR analysis revealed that four homologous PeADFs were significantly induced by mannitol treatment. These results characterize the basic features of the PtADF gene family and provide a general reference for screening candidate PeADF genes for further research in poplar. Full article
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19 pages, 11310 KB  
Article
Genome-Wide Identification and Functional Studies of the APX Gene Family in Oat (Avena sativa L.)
by Conghui Li, Lijuan Zhao, Xinmei Li, Xinyu He, Yuhao Niu, Guangyin Wang, Lijun Cheng, Siyue He, Yi Zhang and Haitao Liu
Life 2026, 16(3), 494; https://doi.org/10.3390/life16030494 - 18 Mar 2026
Viewed by 561
Abstract
Ascorbate peroxidase (APX) plays a crucial role in both the removal of hydrogen peroxide and chloroplast development in response to light. To clarify the function of the APX gene family in oat (Avena sativa L.), we identified the family members and systematically [...] Read more.
Ascorbate peroxidase (APX) plays a crucial role in both the removal of hydrogen peroxide and chloroplast development in response to light. To clarify the function of the APX gene family in oat (Avena sativa L.), we identified the family members and systematically analyzed their characteristics, phylogenetic relationships, promoter cis-elements, and expression patterns. Overall, 27 oat APX (AsAPX) members were identified in oat, and all encoded products had a peroxidase or peroxidase-like heptapeptide structure and motif. The genes were distributed unevenly across 15 chromosomes, with amino acid sequences ranging from 112 to 510 and molecular weights varying between 11.83 and 55.45 kDa. A phylogenetic analysis revealed that AsAPXs can be categorized into five branches, while an intra-group syntenic analysis identified 17 pairs of duplicate segments. Furthermore, 41 cis-element recognition sites were identified in the promoter regions of AsAPX genes, primarily comprising light-responsive and phytohormone-responsive elements. Moreover, qRT-PCR results indicated that AsAPX genes respond to light. Based on these results, our research establishes a foundation for exploration of AsAPX gene functionality and offers light-inducible candidate genes for chloroplast development to enhance A. sativa and improve crop production. Full article
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16 pages, 8215 KB  
Article
Identification and Expression Analysis of the MLO Gene Family Under Salt Stress in Cotton (Gossypium hirsutum L.)
by Cong-Hua Feng, Junbo Zhen, Linlin Liu, Mengzhe Li, Mengmeng Jiang, Di Liu and Jina Chi
Life 2026, 16(3), 476; https://doi.org/10.3390/life16030476 - 16 Mar 2026
Viewed by 544
Abstract
MLO (Mildew Resistance Locus O) genes encode seven-transmembrane proteins that function as critical regulators of powdery mildew resistance and abiotic stress responses. Despite their established importance, the MLO gene family in Gossypium hirsutum L. has not been systematically investigated under salt stress conditions. [...] Read more.
MLO (Mildew Resistance Locus O) genes encode seven-transmembrane proteins that function as critical regulators of powdery mildew resistance and abiotic stress responses. Despite their established importance, the MLO gene family in Gossypium hirsutum L. has not been systematically investigated under salt stress conditions. Here, we performed genome-wide identification of 46 GhMLO members using Hidden Markov Model and BLAST searches based on the latest cotton genome assembly. Phylogenetic analysis classified these genes into four distinct subfamilies. Transmembrane topology and conserved domain analyses revealed that all GhMLO proteins contain typical MLO domains and transmembrane structures, maintaining high structural similarity with dicotyledonous model plants. Synteny analysis demonstrated that the expansion of the GhMLO family was primarily driven by segmental and tandem duplications. Integration of transcriptomic data from the COTTONOMICS database revealed tissue-specific expression patterns, with higher transcript abundance in receptacles, stems, and roots, but lower levels in stamens and petals. Salt, drought, and cold stress treatments induced upregulation of GhMLO family members, with most genes showing increased expression over time. RT-qPCR analysis validated that five candidate GhMLO genes were significantly upregulated under salt stress. In summary, this study provides a comprehensive genome-wide characterization of the GhMLO gene family, elucidating their phylogenetic relationships and expression dynamics, which establishes a theoretical basis for identifying key regulatory genes involved in abiotic stress responses and offers novel genetic resources for improving stress tolerance in cotton molecular breeding. Full article
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13 pages, 2656 KB  
Article
The ERF Transcription Factor ERF41 Negatively Regulates Drought and Salt Tolerance in Arabidopsis thaliana
by Jing Wang, Mengli Luo, Han Xiao and Yue Zhang
Life 2026, 16(3), 421; https://doi.org/10.3390/life16030421 - 4 Mar 2026
Viewed by 610
Abstract
Drought and salt stresses severely impair plant growth and development worldwide. DEHYDRATION-RESPONSIVE ELEMENT BINDING proteins (DREBs), as a subfamily of the AP2/ERF transcription factor superfamily, play critical regulatory roles in plant biological processes including growth and development, as well as the adaptive response [...] Read more.
Drought and salt stresses severely impair plant growth and development worldwide. DEHYDRATION-RESPONSIVE ELEMENT BINDING proteins (DREBs), as a subfamily of the AP2/ERF transcription factor superfamily, play critical regulatory roles in plant biological processes including growth and development, as well as the adaptive response to various abiotic stresses. Based on the transcriptome data analysis of Medicago truncatula under saline-alkali stress previously conducted in our laboratory, a gene responsive to saline-alkali stress, Medtr3g110205, was identified, and its homologous gene in Arabidopsis thaliana, AtERF41 (AT5G11590), was obtained via BLAST (version BLAST+ 2.17.0.). The mutant erf41 was used to explore its biological functions in response to drought and salt stresses. The results showed that under salt and drought stress conditions, the seed germination rate, and growth status of the erf41 mutant were all better than those of the wild type. Further determination of physiological and biochemical indicators revealed that the leaf contents of superoxide dismutase (SOD) and proline (Pro) in the leaves of the mutant plants were significantly higher than those in the wild type, while the malondialdehyde (MDA) content was significantly decreased. In conclusion, the AtERF41 gene negatively regulates salt and drought tolerance in Arabidopsis thaliana, providing a potential target for the genetic improvement of crop stress tolerance. This study not only deepens our understanding of the role of DREB transcription factors in plant stress response but also provides a theoretical basis for improving crop stress tolerance using genetic engineering technology in the future. Full article
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