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Agriculture
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Responses and Tolerance to Abiotic Stress in Forage and Turf...
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Responses and Tolerance to Abiotic Stress in Forage and Turf Grasses

A special issue of Agriculture (ISSN 2077-0472). This special issue belongs to the section "Crop Production".

Deadline for manuscript submissions: 15 October 2024 | Viewed by 665

Special Issue Editors

Dr. Jibiao Fan

E-Mail Website
Guest Editor
College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China
Interests: turf grass; salt stress; growth; plant physiology; molecular regulation
Prof. Dr. Bin Xu

E-Mail Website
Guest Editor
College of Agro-Grassland Science, Nanjing Agricultural University, Nanjing 210095, China
Interests: turf grass; forage; abiotic stress; omics analysis; gene function
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Forage crops are plants that are used to provide high nutrition for herbivores, and turf grasses are plants that be used on sports fields, golf courses and home lawns. Hence, their growth condition determines the development of animal husbandry and life quality of people. However, the growth and development of plants are limited by diverse environmental stresses such as extreme temperature, water, salinity and soil pollution. To cope with adverse conditions, plants have evolved complex adaptive mechanisms at the physiological, metabolic and molecular levels. The environmental stress response mechanisms and signal pathways of key genes in plants have been research hotspots in recent years. However, the regulation mechanisms are still largely unknown in forage and turf grasses.

This Special Issue aims to highlight impactful research that focuses on revealing the adaptive mechanisms to abiotic stress in forage and turf grasses. This Special Issue will fully embrace disciplinary studies in agriculture that refer to physiology, biochemistry, genetics, and plant–microbe interactions at different levels, i.e., whole plant, cellular, subcellular and molecular levels, of forage and turf grasses. In addition, “omics” studies related to the stress responses of forage and turf grasses, for example, transcriptomics, proteomics, metabolomics, etc., are also welcomed.

This Special Issue welcomes the submission of all types of articles, including original research, reviews, methodologies, opinions and commentaries.

Dr. Jibiao Fan
Prof. Dr. Bin Xu
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

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. Agriculture 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

  • forage crop
  • turf grass
  • abiotic stress
  • stress response
  • physiology
  • genetics
  • gene function
  • molecular regulation
  • omics analysis

Published Papers (1 paper)

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Research

19 pages, 6251 KiB  
Article
Transcriptomic Analysis of Melatonin-Mediated Salt Stress Response in Germinating Alfalfa
by Zirui Liu, Xiangling Ren, Wenxuan Zhu, Yingao Li, Guoming Li, Caifeng Liu, Defeng Li, Yinghua Shi, Chengzhang Wang, Xiaoyan Zhu and Hao Sun
Agriculture 2024, 14(5), 661; https://doi.org/10.3390/agriculture14050661 - 24 Apr 2024
Viewed by 270
Abstract
Salt stress poses a significant threat to crop yields worldwide. Melatonin (MT), an endogenous hormone synthesized in plants, has emerged as a crucial player in plant responses to various abiotic stresses, including drought, salinity, heat, and cold. However, the precise molecular mechanisms underlying [...] Read more.
Salt stress poses a significant threat to crop yields worldwide. Melatonin (MT), an endogenous hormone synthesized in plants, has emerged as a crucial player in plant responses to various abiotic stresses, including drought, salinity, heat, and cold. However, the precise molecular mechanisms underlying MT-mediated abiotic stress responses remain incompletely understood. To elucidate the key genes and pathways involved in MT-mediated alleviation of salt stress, we conducted physiological, biochemical, and transcriptomic analyses on alfalfa seedlings. Our results demonstrated that alfalfa seedlings treated with melatonin exhibited higher germination rates, longer bud lengths, and greater fresh weights compared to those subjected to salt stress alone. Furthermore, the levels of malondialdehyde (MDA) and superoxide anion (O2−) were reduced, while the activities and contents of antioxidant enzymes such as superoxide dismutase (SOD), peroxidase (POD), and glutathione (GSH) increased in response to melatonin treatment. Transcriptome analysis revealed 2181 differentially expressed genes (DEGs) in the salt-treated group, with 780 upregulated and 1401 downregulated genes. In contrast, the MT-treated group exhibited 4422 DEGs, including 1438 upregulated and 2984 downregulated genes. Functional annotation and pathway enrichment analysis indicated that DEGs were primarily involved in the biosynthesis of flavonoids, isoflavones, plant hormones, glutathione (GSH), soluble sugars, and other substances, as well as in ABC transporter and MAPK signaling pathways. Notably, the MT-treated group showed greater enrichment of DEGs in these pathways, suggesting that MT mitigates salt stress by modulating the expression of genes related to phytohormones and antioxidant capacity. Overall, our findings provide valuable insights into the molecular mechanisms underlying MT-mediated salt tolerance in alfalfa, with important implications for breeding salt-tolerant alfalfa and other crops. Full article
(This article belongs to the Special Issue Responses and Tolerance to Abiotic Stress in Forage and Turf Grasses)
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