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Plants
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Plant Biostimulation 2nd Edition
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Plant Biostimulation 2nd Edition

A special issue of Plants (ISSN 2223-7747). This special issue belongs to the section "Crop Physiology and Crop Production".

Deadline for manuscript submissions: 20 September 2024 | Viewed by 2344

Special Issue Editors

Prof. Dr. Antonio Juárez-Maldonado

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Guest Editor
Departamento de Botánica, Universidad Autónoma Agraria Antonio Narro, Saltillo COAH 25315, México
Interests: use of nanomaterials, aminoacids, biochar, LED lighting, and other compounds and techniques as plant biostimulants, with the aim to increase the productivity of crops, increase tolerance to different types of stress, both biotic and abiotic, and increase the quality of fruits and content of bioactive compounds
Special Issues, Collections and Topics in MDPI journals
Dr. Susana González-Morales

E-Mail Website
Guest Editor
CONAHCYT-Departamento de Horticultura, Universidad Autónoma Agraria Antonio Narro, Saltillo COAH 25315, México
Interests: search for strategies to protect crops from different types of stress using biostimulants such as botanical and seaweed extracts, chitosan, and inorganic compounds; study of the mechanism of action of biostimulants in tolerance to biotic and abiotic stress using the gene expression analysis, and the quantification of phytohormones, secondary metabolites and enzymes
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Adalberto Benavides-Mendoza

E-Mail Website
Guest Editor
Departamento de Horticultura, Universidad Autónoma Agraria Antonio Narro, Saltillo 25315, Mexico
Interests: research interests are directed towards plant biostimulation, plant nutrition, and stress tolerance induction and seed priming using nanometric or bulk species of essential and beneficial elements, biopolymers, and UV radiation; research focuses on the relationships between plant biostimulation, plant nutrition, tolerance to stress, and the nutritional quality and biofortification of vegetables and fruits
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Biostimulation is the perception and response to both external and internal environmental signals. Biostimulation and phenotypic plasticity are closely related. Consequently, one is likely a result of the other. In the context of its practical application, biostimulation occurs when one or more physical (e.g., UV radiation or heat shock), chemical (e.g., chitosan or algal extracts), or biological (e.g., PGPR or mycorrhizae) stimuli induce responses in the form of changes in metabolism, physiology, or gene expression that enhance the ability of plants to acclimate to their environment. Depending on its magnitude, biostimulation results in a reversible or irreversible phenotypic change that increases stress tolerance, metabolic or growth capacity, or the nutritional quality of food.

Biostimulation is the biological basis for applying agricultural or forestry biostimulant products, which are currently an important part of the agricultural production pharmacopeia and can potentially be an important part of the effort to increase the sustainability of food and fiber production.

This second Special Issue, Plant Biostimulation-II, offers a publication space for those interested in the mechanisms involved in the responses of plants to physical, chemical, and biological stimuli that improve their physiological performance, productivity, or quality.

Prof. Dr. Antonio Juárez-Maldonado
Dr. Susana González-Morales
Prof. Dr. Adalberto Benavides-Mendoza
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. Plants is an international peer-reviewed open access semimonthly 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 2700 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

  • biotic stress
  • abiotic stress
  • priming
  • seed priming
  • biopriming
  • stress tolerance
  • tolerance induction
  • elicitors

Related Special Issue

Published Papers (3 papers)

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Research

17 pages, 19494 KiB  
Article
Enhancing Postharvest Quality and Shelf Life of Strawberries through Advanced Coating Technologies: A Comprehensive Investigation of Chitosan and Glycine Betaine Nanoparticle Treatments
by Reza Bahmani, Farhang Razavi, Seyed Najmmaddin Mortazavi, Gholamreza Gohari and Antonio Juárez-Maldonado
Plants 2024, 13(8), 1136; https://doi.org/10.3390/plants13081136 - 18 Apr 2024
Viewed by 382
Abstract
The application of natural polymer-based coatings presents a viable approach to prolong the longevity of fruits and tissue damage. This study investigates the impact of treatments involving glycine betaine (GB), chitosan (CTS), and chitosan-coated glycine betaine nanoparticles (CTS-GB NPs) on preserving the quality [...] Read more.
The application of natural polymer-based coatings presents a viable approach to prolong the longevity of fruits and tissue damage. This study investigates the impact of treatments involving glycine betaine (GB), chitosan (CTS), and chitosan-coated glycine betaine nanoparticles (CTS-GB NPs) on preserving the quality and reducing decay in strawberry fruits. The fruits were subjected to treatments with GB (1 mM), CTS (0.1%), CTS-GB NPs (0.1%), or distilled water at 20 °C for 5 min, followed by storage at 4 °C for 12 days. The results indicate that CTS and CTS-GB NPs treatments resulted in the highest tissue firmness, total anthocyanin content, and ascorbate peroxidase activity, while exhibiting the lowest decay percentage and weight loss, as well as reduced malondialdehyde levels at the end of storage. GB, CTS, and CTS-GB NPs treatments demonstrated elevated catalase activity and antioxidant capacity, coupled with lower electrolyte leakage and hydrogen peroxide levels. These treatments did not significantly differ from each other but were markedly different from the control. The results substantiate that CTS and CTS-GB NPs treatments effectively preserve strawberry quality and extend storage life by bolstering antioxidant capacity and mitigating free radical damage. Full article
(This article belongs to the Special Issue Plant Biostimulation 2nd Edition)
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14 pages, 751 KiB  
Article
Chitosan from Mushroom Improves Drought Stress Tolerance in Tomatoes
by Olusoji Demehin, Maha Attjioui, Oscar Goñi and Shane O’Connell
Plants 2024, 13(7), 1038; https://doi.org/10.3390/plants13071038 - 06 Apr 2024
Viewed by 512
Abstract
Chitosan is a derivative of chitin that is one of the most abundant biopolymers in nature, found in crustacean shells as well as in fungi cell walls. Most of the commercially available chitosans are produced from the exoskeletons of crustaceans. The extraction process [...] Read more.
Chitosan is a derivative of chitin that is one of the most abundant biopolymers in nature, found in crustacean shells as well as in fungi cell walls. Most of the commercially available chitosans are produced from the exoskeletons of crustaceans. The extraction process involves harsh chemicals, has limited potential due to the seasonal and limited supply and could cause allergic reactions. However, chitosan has been shown to alleviate the negative effect of environmental stressors in plants, but there is sparse evidence of how chitosan source affects this bioactivity. The aim of this study was to investigate the ability of chitosan from mushroom in comparison to crustacean chitosan in enhancing drought stress tolerance in tomato plants (cv. MicroTom). Chitosan treatment was applied through foliar application and plants were exposed to two 14-day drought stress periods at vegetative and fruit set growth stages. Phenotypic (e.g., fruit number and weight), physiological (RWC) and biochemical-stress-related markers (osmolytes, photosynthetic pigments and malondialdehyde) were analyzed at different time points during the crop growth cycle. Our hypothesis was that this drought stress model will negatively impact tomato plants while the foliar application of chitosan extracted from either crustacean or mushroom will alleviate this effect. Our findings indicate that drought stress markedly decreased the leaf relative water content (RWC) and chlorophyll content, increased lipid peroxidation, and significantly reduced the average fruit number. Chitosan application, regardless of the source, improved these parameters and enhanced plant tolerance to drought stress. It provides a comparative study of the biostimulant activity of chitosan from diverse sources and suggests that chitosan sourced from fungi could serve as a more sustainable and environmentally friendly alternative to the current chitosan from crustaceans. Full article
(This article belongs to the Special Issue Plant Biostimulation 2nd Edition)
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18 pages, 4861 KiB  
Article
Potential Impacts of Certain N2-Fixing Bacterial Strains and Mineral N Doses for Enhancing the Growth and Productivity of Maize Plants
by Moustafa Shalaby, Mohssen Elbagory, Nagwa EL-Khateeb, Ahlam Mehesen, Omaima EL-Sheshtawy, Tamer Elsakhawy and Alaa El-Dein Omara
Plants 2023, 12(22), 3830; https://doi.org/10.3390/plants12223830 - 11 Nov 2023
Viewed by 984
Abstract
The enhancing effect of N2-fixing bacterial strains in the presence of mineral N doses on maize plants in pots and field trials was investigated. The OT-H1 of 10 isolates maintained the total nitrogen, nitrogenase activities, IAA production, and detection of NH [...] Read more.
The enhancing effect of N2-fixing bacterial strains in the presence of mineral N doses on maize plants in pots and field trials was investigated. The OT-H1 of 10 isolates maintained the total nitrogen, nitrogenase activities, IAA production, and detection of NH3 in their cultures. In addition, they highly promoted the germination of maize grains in plastic bags compared to the remainder. Therefore, OT-H1 was subjected for identification and selected for further tests. Based on their morphological, cultural, and biochemical traits, they belonged to the genera Azotobacter. The genomic sequences of 16S rRNA were, thus, used to confirm the identification of the genera. Accordingly, the indexes of tree and similarity for the related bacterial species indicated that genera were exactly closely linked to Azotoacter salinestris strain OR512393. In pot (35 days) and field (120 days) trials, the efficiencies of both A. salinestris and Azospirillum oryzea SWERI 111 (sole/dual) with 100, 75, 50, and 25% mineral N doses were evaluated with completely randomized experimental design and three repetitions. Results indicated that N2-fixing bacteria in the presence of mineral N treatment showed pronounced effects compared to controls. A high value of maize plants was also noticed through increasing the concentration of mineral N and peaked at a dose of 100%. Differences among N2-fixing bacteria were insignificant and were observed for A. oryzea with different mineral N doses. Thus, the utilization of A. oryzea and A. salinestris in their dual mix in the presence of 75 followed by 50% mineral N was found to be the superior treatments, causing the enhancement of vegetative growth and grain yield parameters of maize plants. Additionally, proline and the enzyme activities of both polyphenol oxidase (PPO) and peroxidase (PO) of maize leaves were induced, and high protein contents of maize grains were accumulated due to the superior treatments. The utilization of such N2-fixing bacteria was, therefore, found to be effective at improving soil fertility and to be an environmentally safe strategy instead, or at least with low doses, of chemical fertilizers. Full article
(This article belongs to the Special Issue Plant Biostimulation 2nd Edition)
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