Phyto-Friendly Soil Bacteria and Fungi Provide Beneficial Outcomes in the Host Plant by Differently Modulating Its Responses through (In)Direct Mechanisms

Palma, Monica De; Scotti, Riccardo; D’Agostino, Nunzio; Zaccardelli, Massimo; Tucci, Marina

doi:10.3390/plants11202672

Cited by 13 publications

(8 citation statements)

References 165 publications

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“…Several studies have reported that PGPM can provide protection to plants against phytopathogens by inducing the plant's defense mechanisms, which are known as induced systemic resistance (ISR). This phenomenon has been discussed in detail in the review article 59 . As a result of ISR, the cell wall is strengthened by increased lignin production and callose apposition, which slows the spread of phytopathogens across plant tissues 60 .…”

Section: Discussionmentioning

confidence: 91%

Biocontrol agent of root-knot nematode Meloidogyne javanica and root-rot fungi, Fusarium solani in okra morphological, anatomical characteristics and productivity under greenhouse conditions

Ali

Abdel-Mageed

Hegazy

et al. 2023

Sci Rep

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This study was conducted to evaluate the ability of some fungal culture filtrate, as biocontrol agents against okra wilt caused by Fusariumsolani. and Meloidogynejavanica. In the present study, fungal culture filtrates (FCFs) of Aspergillusterreus (1), Aspergillusterreus (2), Penicilliumchrysogenum, and Trichoderma spp. were tested against M.javanica in vitro. The effects of P.chrysogenum and Trichoderma spp. (FCFs) in controlling root-rot fungi and root-knot nematode disease complex on okra plants were studied under greenhouse conditions (In vivo). In vitro experiment, the results revealed cumulative rate of J2s mortality of M.javanica reached to 97.67 and 95% by P.chrysogenum and Trichoderma spp., respectively, after 72 h. incubation. Additionally, Trichoderma spp exhibited the most effective inhibitory activity against the pathogen's radial growth, with a percentage of 68%. P.chrysogenum ranked second with 53.88%, while A.terreus (2) demonstrated the weakest inhibitory effect of 24.11%. T6 [Nematode infection (M.javanica) + Fungus infection (F.solani) + Overflowed with fungal culture filtrate (P.chrysogenum)] and T8 [Nematode infection (M.javanica) + Fungus infection (F.solani) + spray with fungal culture filtrate (P.chrysogenum)] had the greatest effects on nematode galling indices on okra roots and substantially reduced the reproductive factors in the greenhouse (In vivo experiment). T6 was the best treatment to decrease disease severity, as reached (28%) relatively. On the other hand, T12 [(Fungus infection (F.solani) + (Dovex 50% fungicide with irrigation water)] recorded the lowest disease severity reaching (8%) relatively. The results showed that nematode infection or fungus infection or both decreased all studied anatomical characteristics of okra root, stem, and leaves. We concluded from this study that root-knot nematode and root-rot fungi were reduced by using fungal culture filtrates and could improve plant growth.

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Section: Discussionmentioning

confidence: 91%

Biocontrol agent of root-knot nematode Meloidogyne javanica and root-rot fungi, Fusarium solani in okra morphological, anatomical characteristics and productivity under greenhouse conditions

Ali

Abdel-Mageed

Hegazy

et al. 2023

Sci Rep

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“…Rojas-Sánchez, et al [ 124 ] explained how PGPF dwells in root cells, root surfaces, and the outer layers of root cells. De Palma, et al [ 157 ] reported how Trichoderma spp. can be introduced into plant roots during the seedling stage of plant growth to ensure a beneficial relationship in improving plants’ health and preventing disease invasion.…”

Section: Pgpf As An Alternative To Chemical Derivatives In Crop Plant...mentioning

confidence: 99%

Fungi That Promote Plant Growth in the Rhizosphere Boost Crop Growth

Adedayo

Babalola

2023

JoF

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The fungi species dwelling in the rhizosphere of crop plants, revealing functions that endeavor sustainability of the plants, are commonly referred to as ‘plant-growth-promoting fungi’ (PGPF). They are biotic inducers that provide benefits and carry out important functions in agricultural sustainability. The problem encountered in the agricultural system nowadays is how to meet population demand based on crop yield and protection without putting the environment and human and animal health at risk based on crop production. PGPF including Trichoderma spp., Gliocladium virens, Penicillium digitatum, Aspergillus flavus, Actinomucor elegans, Podospora bulbillosa, Arbuscular mycorrhizal fungi, etc., have proven their ecofriendly nature to ameliorate the production of crops by improving the growth of the shoots and roots of crop plants, the germination of seeds, the production of chlorophyll for photosynthesis, and the abundant production of crops. PGPF’s potential mode of action is as follows: the mineralization of the major and minor elements required to support plants’ growth and productivity. In addition, PGPF produce phytohormones, induced resistance, and defense-related enzymes to inhibit or eradicate the invasion of pathogenic microbes, in other words, to help the plants while encountering stress. This review portrays the potential of PGPF as an effective bioagent to facilitate and promote crop production, plant growth, resistance to disease invasion, and various abiotic stresses.

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“…Phytostimulators are rhizosphere or endophyte microorganisms, fungi, and bacteria, which can influence plant growth and development by affecting plant hormone metabolism, either through the production of phytohormones such as auxins, cytokinins, and gibberellins or by interfering with plant endogenous hormone homeostasis [ 10 , 11 ]. This type of PGPM facilitates implantation, accelerates growth, and promotes greater plant vigor, but can also mitigate the damaging effects of abiotic stresses.…”

Section: Plant-beneficial Microbes and The Concept Of Probioticsmentioning

confidence: 99%

Microbials for Agriculture: Why Do They Call Them Biostimulants When They Mean Probiotics?

et al. 2023

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There is growing interest in using plant-beneficial microorganisms to partially replace chemicals and help reduce the environmental impact of agriculture. Formulated microbial products or inoculants for agriculture contain single strains or a consortium of live microbes, well characterized and biosafe, which can contribute to the growth, health, and development of a plant host. This concept conforms to the definition of probiotics. However, some plant-growth-promoting microorganisms (PGPMs) have been considered a category of biostimulants since some years ago, despite the traditional concept of biostimulants involves substances or materials with no fertilizer value, which in minute amounts promote plant growth. The inclusion of PGPMs together with substances has also involved a significant distortion of the classical concept of biostimulants. Regulations such as the recent EU Fertilizing Products Regulation (EU No. 2019/1009) have incorporated the new definition of biostimulants and included microbials as a subcategory of biostimulants. We discuss that this regulation and the forthcoming European harmonized standards disregard some key features of microbial products, such as the live, true biological nature of their active principles. The factors that determine the complex functional compatibility of plant–microbe associations, and important biosafety issues that concern the intentional release of microbes into the environment, seem to be also ignored. We anticipate that by equating microbials to chemicals, the biological nature of microbial products and their specific requirements will be underestimated, with pernicious consequences for their future development and success.

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Phyto-Friendly Soil Bacteria and Fungi Provide Beneficial Outcomes in the Host Plant by Differently Modulating Its Responses through (In)Direct Mechanisms

Cited by 13 publications

References 165 publications

Biocontrol agent of root-knot nematode Meloidogyne javanica and root-rot fungi, Fusarium solani in okra morphological, anatomical characteristics and productivity under greenhouse conditions

Biocontrol agent of root-knot nematode Meloidogyne javanica and root-rot fungi, Fusarium solani in okra morphological, anatomical characteristics and productivity under greenhouse conditions

Fungi That Promote Plant Growth in the Rhizosphere Boost Crop Growth

Microbials for Agriculture: Why Do They Call Them Biostimulants When They Mean Probiotics?

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