The Effect of Static Magnetic Field on Growth and Biochemical Indices of Five Fungal Genera

Ali, Zainab A. M.; Yahya, Abdul Ghani I.; Jabir, Abdul Wahid Sh.

doi:10.24126/jobrc.2014.8.3.352

Cited by 5 publications

(4 citation statements)

References 22 publications

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“…One of the reasons is that the immersion of an alkaline solution was able to remove some nutrient sources for fungi, such as soluble starch and sugars, forming a barren and harsh environment for microorganisms. In addition, because most fungi thrive at slightly acidic pH values of 5.0-6.0 [43], the high pH micro-environment established by the alkali treatment can inhibit the growth of fungi. Liu et al [44] found that the Chao and ACE indexes of the fungal community of saline-alkali soil were significantly lower than those of untreated control samples.…”

Section: Alpha Diversity Analysismentioning

confidence: 99%

Temporal Dynamics of Fungal Communities in Alkali-Treated Round Bamboo Deterioration under Natural Weathering

Han,

An,

et al. 2024

Microorganisms

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Microbes naturally inhabit bamboo-based materials in outdoor environments, sequentially contributing to their deterioration. Fungi play a significant role in deterioration, especially in environments with abundant water and favorable temperatures. Alkali treatment is often employed in the pretreatment of round bamboo to change its natural elastic and aesthetic behaviors. However, little research has investigated the structure and dynamics of fungal communities on alkali-treated round bamboo during natural deterioration. In this work, high-throughput sequencing and multiple characterization methods were used to disclose the fungal community succession and characteristic alterations of alkali-treated round bamboo in both roofed and unroofed habitats throughout a 13-week deterioration period. In total, 192 fungal amplicon sequence variants (ASVs) from six phyla were identified. The fungal community richness of roofed bamboo samples declined, whereas that of unroofed bamboo samples increased during deterioration. The phyla Ascomycota and Basidiomycota exhibited dominance during the entire deterioration process in two distinct environments, and the relative abundance of them combined was more than 99%. A distinct shift in fungal communities from Basidiomycota dominant in the early stage to Ascomycota dominant in the late stage was observed, which may be attributed to the increase of moisture and temperature during succession and the effect of alkali treatment. Among all environmental factors, temperature contributed most to the variation in the fungal community. The surface of round bamboo underwent continuous destruction from fungi and environmental factors. The total amount of cell wall components in bamboo epidermis in both roofed and unroofed conditions presented a descending trend. The content of hemicellulose declined sharply by 8.3% and 11.1% under roofed and unroofed environments after 9 weeks of deterioration. In addition, the contact angle was reduced throughout the deterioration process in both roofed and unroofed samples, which might be attributed to wax layer removal and lignin degradation. This study provides theoretical support for the protection of round bamboo under natural weathering.

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Section: Alpha Diversity Analysismentioning

confidence: 99%

Temporal Dynamics of Fungal Communities in Alkali-Treated Round Bamboo Deterioration under Natural Weathering

Han,

An,

et al. 2024

Microorganisms

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“…In this phase, the fungus has adapted to the new organic nutrients so that it can grow well and enter the exponential stage. The speed of fungal growth is strongly influenced by physical factors and the growing medium, such as pH and nutrient content, as well as environmental conditions, including temperature and humidity (Ali et al, 2017). In addition, the growth speed is also determined by the nutrient content of the growth medium (Basu et al, 2015).…”

Section: Propagation Of the Pathogenic Fungi In The Liquidmentioning

confidence: 99%

Preservation of weeds’ pathogenic fungi in tempeh and tapioca liquid waste and its effectiveness in goatweed (Ageratum conyzoides)

Soesanto

Mugiastuti

Sastyawan

et al. 2023

J Trop Plant Pests Dis

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This research aimed to determine the best liquid media for the propagation of weed pathogenic fungi, the duration of the fungus storage on the media, and their virulence on goatweed (Ageratum conyzoides). The research consisted of two stages, i.e., the propagation of weed pathogenic fungi in alternative liquid media using a factorial completely randomized design, with the first factor being the pathogenic weed fungus (Curvularia sp., Fusarium sp., and Chaetomium sp.) and the second one being the media (tempeh or tapioca liquid waste) with four replicates. Applications were carried out using a hand sprayer on the underside of weed leaves at a density of 106 conidia or cfu mL-1. Each weed was sprayed with 10 mL of the solution. Variables observed were conidia density, number of colonies, incubation period and symptoms, disease intensity, the area under the disease progress curve (AUDPC), plant height, number of leaves, dry crown weight, and dry root weight. The results showed that tempeh and tapioca liquid waste media could be used as alternative media for multiplying pathogenic fungi. The conidia density of Curvularia sp. was 2.375 × 109 conidia mL-1 higher than that of Fusarium sp. at 1.7 × 109 conidia mL-1 and Chaetomium sp. at 9.5×104 cfu mL-1. Curvularia sp. propagated in tempeh liquid waste was able to cause damage to the leaves of goatweed as shown successively from the incubation period of 3.33 dai or accelerating 81.50%, increasing the disease intensity of 88.78%, and the AUDPC of 713.25% days compared to control. The most effective shelf life of Curvularia sp., Fusarium sp., and Chaetomium sp. in both tempeh and tapioca liquid waste media was found at six weeks at room temperature. Curvularia sp. in tapioca liquid waste could decrease weed height, the number of leaves, shoot dry weight, and root dry weight by 45.11, 28.65, 22.12, and 46.25%, respectively, compared to control.

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“…The shorter the incubation period, the higher the suitability of the host-pathogen. According to Ali et al (2017), the incubation period is influenced by several factors, including the host, environment, and pathogen. The secondary metabolites of P. fluorescens P60 gave better results when combined with the secondary metabolites of T. harzianum T10.…”

Section: Incubation Periodmentioning

confidence: 99%

Secondary Metabolites Application of Two Pseudomonas fluorescens isolates and Two Trichoderma Harzianum Isolates in Combination Against Postharvest Anthracnose in Papaya

Muarifah,

Soesanto,

Sastyawan

et al. 2023

Planta Tropika

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The occurrence of papaya anthracnose is a significant post-harvest ailment, necessitating the effective disease management. The aim was to determine the ability of secondary metabolites combination of Pseudomonas fluorescens and Trichoderma harzianum isolates against the disease. A completely randomized design was used for in vitro experiments and a randomized block design for in vivo experiments. The treatments consisted of P. fluorescens P60 and T. harzianum T10, P. fluorescens P60 and T. harzianum T213, P. fluorescens P32 and T. harzianum T10, P. fluorescens P32 and T. harzianum T213 secondary metabolites and fungicides (a.i. maneb). The observed variables included the pathosystem component and papaya character and organoleptic test. The in vitro test results showed that P. fluorescens P60 and T. harzianum T10 and P. fluorescens P60 and T. harzianum T213 secondary metabolites inhibited the pathogen growth by 48.1075 and 43.4625%, respectively. The secondary metabolites of P. fluorescens P60 and T. harzianum T10 in vivo test results could delay the germination time by 12.63% and reduce the invasion area by 44.29%. All secondary metabolites had no effect on sugar content, hardness and sensory test. The combined secondary metabolites of P. fluorescens and T. harzianum are safe and does not affect papaya fruit quality.

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The Effect of Static Magnetic Field on Growth and Biochemical Indices of Five Fungal Genera

Cited by 5 publications

References 22 publications

Temporal Dynamics of Fungal Communities in Alkali-Treated Round Bamboo Deterioration under Natural Weathering

Temporal Dynamics of Fungal Communities in Alkali-Treated Round Bamboo Deterioration under Natural Weathering

Preservation of weeds’ pathogenic fungi in tempeh and tapioca liquid waste and its effectiveness in goatweed (Ageratum conyzoides)

Secondary Metabolites Application of Two Pseudomonas fluorescens isolates and Two Trichoderma Harzianum Isolates in Combination Against Postharvest Anthracnose in Papaya

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