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Beneficial Plant-Microorganisms Interactions: Augmented Defenses of Plants and Physiological Responses
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Beneficial Plant-Microorganisms Interactions: Augmented Defenses of Plants and Physiological Responses

A special issue of Plants (ISSN 2223-7747). This special issue belongs to the section "Plant Protection and Biotic Interactions".

Deadline for manuscript submissions: 30 November 2024 | Viewed by 1489

Special Issue Editor

Dr. Daiana Garcia

E-Mail Website
Guest Editor
Laboratorio de Ecología Microbiana, Departamento de Microbiología e Inmunología, Facultad de Ciencias Exactas Físico Químicas y Naturales, Universidad Nacional de Río Cuarto, Ruta 36 Km 601 (X5806JRA), Río Cuarto, Córdoba, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina
Interests: Biological science, moulds, mycotoxins, Plant health-Pests, biocontrol, Plant-microorganism

Special Issue Information

Dear Colleagues,

There is a need to supply global demand for food and feed in a climate change context has stimulated the interest in ecological products to increase their productivity. However, emerging infectious diseases of various crops cause their yield to decrease. In many cases, these infections are treated with chemicals that are harmful to the environment and human and animal health. In this sense, an alternative to traditional chemicals compounds involves the use of beneficial organisms and natural products to improve food and feed performance and control pests and diseases. For example, biological control agents (BCA) interact with pathogens directly or by inducing a physiological state of resistance to the plant being beneficial against infections. Those comprises several mechanisms such as interference with phytohormone pathways, compatible solutes, changes in levels of reactive oxygen compounds, between others. In this way, this issue proposes obtaining work on various CBAs or natural substances that induce physiological changes in the biochemical compounds of plants of economic importance (cereals, oilseeds, vegetables, fruit trees, etc.) which are beneficial for them by protecting them of emerging diseases. Knowing the form of action of these microorganisms or natural substances and the type of activation of the immune response in plants, it could advance in the development process of future natural biocide products.

Dr. Daiana Garcia
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. 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

  • plant infections
  • plant-microorganism interaction
  • biocontrol plant physiological responses
  • plan defenses elicitors

Published Papers (2 papers)

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Research

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16 pages, 3150 KiB  
Article
Trichoderma virens and Pseudomonas chlororaphis Differentially Regulate Maize Resistance to Anthracnose Leaf Blight and Insect Herbivores When Grown in Sterile versus Non-Sterile Soils
by Pei-Cheng Huang, Peiguo Yuan, John M. Grunseich, James Taylor, Eric-Olivier Tiénébo, Elizabeth A. Pierson, Julio S. Bernal, Charles M. Kenerley and Michael V. Kolomiets
Plants 2024, 13(9), 1240; https://doi.org/10.3390/plants13091240 - 30 Apr 2024
Viewed by 243
Abstract
Soil-borne Trichoderma spp. have been extensively studied for their biocontrol activities against pathogens and growth promotion ability in plants. However, the beneficial effect of Trichoderma on inducing resistance against insect herbivores has been underexplored. Among diverse Trichoderma species, consistent with previous reports, we [...] Read more.
Soil-borne Trichoderma spp. have been extensively studied for their biocontrol activities against pathogens and growth promotion ability in plants. However, the beneficial effect of Trichoderma on inducing resistance against insect herbivores has been underexplored. Among diverse Trichoderma species, consistent with previous reports, we showed that root colonization by T. virens triggered induced systemic resistance (ISR) to the leaf-infecting hemibiotrophic fungal pathogens Colletotrichum graminicola. Whether T. virens induces ISR to insect pests has not been tested before. In this study, we investigated whether T. virens affects jasmonic acid (JA) biosynthesis and defense against fall armyworm (FAW) and western corn rootworm (WCR). Unexpectedly, the results showed that T. virens colonization of maize seedlings grown in autoclaved soil suppressed wound-induced production of JA, resulting in reduced resistance to FAW. Similarly, the bacterial endophyte Pseudomonas chlororaphis 30-84 was found to suppress systemic resistance to FAW due to reduced JA. Further comparative analyses of the systemic effects of these endophytes when applied in sterile or non-sterile field soil showed that both T. virens and P. chlororaphis 30-84 triggered ISR against C. graminicola in both soil conditions, but only suppressed JA production and resistance to FAW in sterile soil, while no significant impact was observed when applied in non-sterile soil. In contrast to the effect on FAW defense, T. virens colonization of maize roots suppressed WCR larvae survival and weight gain. This is the first report suggesting the potential role of T. virens as a biocontrol agent against WCR. Full article
(This article belongs to the Special Issue Beneficial Plant-Microorganisms Interactions: Augmented Defenses of Plants and Physiological Responses)
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Review

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20 pages, 1457 KiB  
Review
Physiological Effects of Microbial Biocontrol Agents in the Maize Phyllosphere
by María Fiamma Grossi Vanacore, Melina Sartori, Francisco Giordanino, Germán Barros, Andrea Nesci and Daiana García
Plants 2023, 12(24), 4082; https://doi.org/10.3390/plants12244082 - 06 Dec 2023
Cited by 1 | Viewed by 1020
Abstract
In a world with constant population growth, and in the context of climate change, the need to supply the demand of safe crops has stimulated an interest in ecological products that can increase agricultural productivity. This implies the use of beneficial organisms and [...] Read more.
In a world with constant population growth, and in the context of climate change, the need to supply the demand of safe crops has stimulated an interest in ecological products that can increase agricultural productivity. This implies the use of beneficial organisms and natural products to improve crop performance and control pests and diseases, replacing chemical compounds that can affect the environment and human health. Microbial biological control agents (MBCAs) interact with pathogens directly or by inducing a physiological state of resistance in the plant. This involves several mechanisms, like interference with phytohormone pathways and priming defensive compounds. In Argentina, one of the world’s main maize exporters, yield is restricted by several limitations, including foliar diseases such as common rust and northern corn leaf blight (NCLB). Here, we discuss the impact of pathogen infection on important food crops and MBCA interactions with the plant’s immune system, and its biochemical indicators such as phytohormones, reactive oxygen species, phenolic compounds and lytic enzymes, focused mainly on the maize–NCLB pathosystem. MBCA could be integrated into disease management as a mechanism to improve the plant’s inducible defences against foliar diseases. However, there is still much to elucidate regarding plant responses when exposed to hemibiotrophic pathogens. Full article
(This article belongs to the Special Issue Beneficial Plant-Microorganisms Interactions: Augmented Defenses of Plants and Physiological Responses)
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