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Forests
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The Use of Secondary Metabolites from Trees in Bioprotection
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The Use of Secondary Metabolites from Trees in Bioprotection

A special issue of Forests (ISSN 1999-4907). This special issue belongs to the section "Forest Ecology and Management".

Deadline for manuscript submissions: closed (20 April 2021) | Viewed by 3282

Special Issue Editor

Dr. Françoise Martz

E-Mail Website
Guest Editor
Natural Resources Institute Finland, Ounasjoentie 6, 96200 Rovaniemi, Finland
Interests: plant secondary metabolites; abiotic stress; bioprotection; soluble phenolics; nettle; natural resources
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues, 

Because trees are nonmobile and long-living organisms, efficient defense mechanisms to fight against abiotic and biotic stresses are critical for their survival. Among the existing mechanisms, production of secondary metabolites with toxic activities towards pests and pathogens is of major importance. Purified, those metabolites have also demonstrated toxic activities, which make trees a renewable source of potential compounds for bioprotection (bioelicitors, biocontrol agents, biofertilizers, biostimulants). The field of bioprotection is a quickly expending market, which supports the zero hunger UN Sustainable Development Goal (SDG2). In addition to be sustainable, the use of forestry industry side-streams as raw material for the isolation of bioprotection agents supports circular economy.

The feedstock type and quality, extraction process, formulation, application method, active concentration, targeted pests or pathogens are all key questions to solve in developing bioprotection agents. 

The objective of this Special Issue is to compile recent research on bioprotection strategies using trees’ secondary metabolites. 

Dr. Françoise Martz
Guest Editor

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. Forests 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

  • Biotic stress 
  • Bioprotection 
  • Side-streams of forestry industry 
  • Secondary metabolites 
  • Phenolic compounds 
  • Integrated pest management 
  • Biocontrol agents 
  • Biostimulants 
  • Biofertilizers 
  • Bioelicitors

Published Papers (1 paper)

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Research

14 pages, 2659 KiB  
Article
Inducing Plant Defense Reactions in Tobacco Plants with Phenolic-Rich Extracts from Red Maple Leaves: A Characterization of Main Active Ingredients
by Elodie Peghaire, Samar Hamdache, Antonin Galien, Mohamad Sleiman, Alexandra ter Halle, Hicham El Alaoui, Ayhan Kocer, Claire Richard and Pascale Goupil
Forests 2020, 11(6), 705; https://doi.org/10.3390/f11060705 - 24 Jun 2020
Cited by 8 | Viewed by 2819
Abstract
Red maple leaf extracts (RME) were tested for their plant defense inducer (PDI) properties. Two extracts were obtained and compared by different approaches: RME1 using ethanol–water (30–70%, v/v, 0.5% HCl 1N) and RME2 using pure water. Both extracts titrated at 1.9 g [...] Read more.
Red maple leaf extracts (RME) were tested for their plant defense inducer (PDI) properties. Two extracts were obtained and compared by different approaches: RME1 using ethanol–water (30–70%, v/v, 0.5% HCl 1N) and RME2 using pure water. Both extracts titrated at 1.9 g L−1 in polyphenols and infiltrated into tobacco leaves efficiently induced hypersensitive reaction-like lesions with topical accumulation of auto-fluorescent compounds noted under UV and scopoletin titration assays. The antimicrobial marker PR1, β−1,3-glucanase PR2, chitinase PR3, and osmotin PR5 target genes were all upregulated in tobacco leaves following RME1 treatment. The alkaline hydrolysis of RME1 and RME2 combined with HPLC titration of gallic acid revealed that gallate functions were present in both extracts at levels comprised between 185 and 318 mg L−1. HPLC-HR-MS analyses and glucose assay identified four gallate derivatives consisting of a glucose core linked to 5, 6, 7, and 8 gallate groups. These four galloyl glucoses possessed around 46% of total gallate functions. Their higher concentration in RME suggested that they may contribute significantly to PDI activity. These findings define the friendly galloyl glucose as a PDI and highlight a relevant methodology for combining plant assays and chemistry process to their potential quantification in crude natural extracts. Full article
(This article belongs to the Special Issue The Use of Secondary Metabolites from Trees in Bioprotection)
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