Fungal communities in rice cultivated in different Brazilian agroclimatic zones: From field to market

Katsurayama, Aline Machado; Martins, Luciano Moura; Iamanaka, Beatriz Thie; Fungaro, Maria Helena Pelegrinelli; Silva, Josué J.; Pitt, John I.; Frisvad, Jens Christian; Taniwaki, Marta Hiromi

doi:10.1016/j.fm.2019.103378

Cited by 16 publications

(4 citation statements)

References 34 publications

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“…The most dangerous sources of rice contamination are heavy metals [14]. Rice is contaminated by the water that comes into the soil and eventually contaminates the field crops [15].…”

Section: Introductionmentioning

confidence: 99%

Determination of Heavy Metals in Irrigation Water, Soil, Paddy, and Produced Rice of Some Paddy Fields of Iraq

Chyad

Saeed

Alhendi³

2022

Iraqi Journal of Science

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Iraq is a developing country with a high population. In Iraq, heavy metal and metalloid contamination has resulted from both industrialisation and environmental sources, providing serious health risks to the local population. We conducted one of the most comprehensive analyses on the current state of Iraq's heavy metal and metalloid pollution in this paper, which included water, soil, paddy, and rice. A study was carried out to determine the concentration of heavy metals including Lead (Pb), Cadmium (Cd), Iron (Fe), manganese (Mn), Cobalt (Co), Magnesium (Mg), Aluminum (Al), and Copper (Cu) of 39 irrigation water samples, 75 soil samples, 75 paddy samples, and 75 rice samples in two Iraqi governorates (Diyala , and Salah al-Din ). Samples were taken from three fields in each province.. Atomic Absorption Spectrophotometer was used to determine heavy metals concentrations. Iraqi Quality Standardization (IQS (and World Health Organization (WHO) were considered as the permissible limits. The results showed that all irrigation water samples were exceeded the permissible limit for Pb, Cd, Fe, and Mn metals, while all soil samples were exceeded for Mn and Mg metals. Paddy and rice samples were exceeded for only Pb metal permissible limit, which was high, for example, Pb metal concentrations of rice and paddy ranged from 1.805-4.776 mg/kg, 0.642-3.481 mg/kg respectively, while the permissible limit was 0.2 mg/kg. Consequently, rice samples were deemed unfit for human consumption, with the contamination coming from irrigation water. therefore, this paper has suggested that the Irrigation water treatment should be strongly advised and evaluated.

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“…The most dangerous sources of rice contamination are heavy metals [14]. Rice is contaminated by the water that comes into the soil and eventually contaminates the field crops [15].…”

Section: Introductionmentioning

confidence: 99%

Determination of Heavy Metals in Irrigation Water, Soil, Paddy, and Produced Rice of Some Paddy Fields of Iraq

Chyad

Saeed

Alhendi³

2022

Iraqi Journal of Science

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“…It was found that Alternaria, Aspergillus, Cladosporium, Papiliotrema, Wallemi, and Ustilaginoidea were the most dominant fungal genera in paddy grain at different storage periods [44]. Among them, Aspergillus was the dominant fungal genera in the paddy microbial community at different storage temperatures and relative humidities [42].…”

Section: Discussionmentioning

confidence: 96%

Isolation and Characterization of Paenibacillus polymyxa B7 and Inhibition of Aspergillus tubingensis A1 by Its Antifungal Substances

Zhao,

Ma,

Lin

et al. 2024

IJMS

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screening of Bacillus with antagonistic effects on paddy mold pathogens to provide strain resources for biological control of mold in Oryza sativa L. screening of Bacillus isolates antagonistic towards Aspergillus tubingensis from rhizosphere soil of healthy paddy; classification and identification of antagonistic strains by biological characteristics and 16S rDNA sequence analysis; transcriptome sequencing after RNA extraction from Bacillus-treated Aspergillus tubingensis; and extraction of inhibitory crude proteins of Bacillus by ammonium sulfate precipitation; inhibitory crude protein and Bacillus spp. were treated separately for A. tubingensis and observed by scanning electron microscopy (SEM). An antagonistic strain of Bacillus, named B7, was identified as Paenibacillus polymyxa by 16S rDNA identification and phylogenetic evolutionary tree comparison analysis. Analysis of the transcriptome results showed that genes related to secondary metabolite biosynthesis such as antifungal protein were significantly downregulated. SEM results showed that the mycelium of A. tubingensis underwent severe rupture after treatment with P. polymyxa and antifungal proteins, respectively. In addition, the sporocarp changed less after treatment with P. polymyxa, and the sporangium stalks had obvious folds. P. polymyxa B7 has a good antagonistic effect against A. tubingensis and has potential for biocontrol applications of paddy mold pathogens.

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“…Este género de hongos representa pocas descipciones en la literatura actual, pero lo han asociado como un potencial patógeno de la zona radicular de Panax notoginseng (Cui-Ping et al, 2016). En cuanto a la inhibición de crecimiento de N. oryzae, un hongo que suele atacar cultivos de maíz (Katsurayama et al, 2020), el efecto antagónico significativo se llevó a cabo únicamente con la mayor concentración de celomocitos respecto al control, con un valor de P < 0.01 y teniendo uno de los efectos visuales antagónicos más grandes en el crecimiento en placa de Petri como se puede observar en la Figura 4 y Figura 5, que corresponden al control de N. oryzae y N. oryzae con la adición de fluido celómico a 4500 cel/ml. Actualmente algunas especies de Penicillium como P. brevicompactum se utiliza para la extracción de algunos pigmentos que pueden ser utilizados en alimentos, tal como lo describe Fonseca y col., (2022).…”

Section: Pág 11969unclassified

Efecto del Fluido Celómico de Eisenia Fetida en el Crecimiento de Hongos Potencialmente Fitopatógenos

Ramírez Villanueva,

López Robles,

Hernández García

et al. 2024

Ciencia Latina

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El fluido celómico de Eisenia fetida comienza a utilizarse contra el crecimiento de hongos fitopatógenos, como una alternativa económica y amigable con el medio ambiente por la gran diversidad de sustancias que contiene, entre ellas, los celomocitos. En este ensayo, se llevó a cabo el aislamiento e identificación de hongos filamentosos a partir de plantas de café y de maíz que presentaron signos de infección fúngica. Posteriormente se pusieron en contacto con fluido de E. fetida en concentraciones de celomocitos de 1500, 2250 y 4500 cel/ml, incubándolos en medio PDA por 96 h. En la mayoría de los hongos expuestos al fluido celómico se observó un efecto negativo en su crecimiento, principalmente en los géneros, Penicillium, Pestalotiopsis y Nigrospora, hongos que son de importancia ya que afectan cultivos de importancia económica como las gramíneas.

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Fungal communities in rice cultivated in different Brazilian agroclimatic zones: From field to market

Cited by 16 publications

References 34 publications

Determination of Heavy Metals in Irrigation Water, Soil, Paddy, and Produced Rice of Some Paddy Fields of Iraq

Determination of Heavy Metals in Irrigation Water, Soil, Paddy, and Produced Rice of Some Paddy Fields of Iraq

Isolation and Characterization of Paenibacillus polymyxa B7 and Inhibition of Aspergillus tubingensis A1 by Its Antifungal Substances

Efecto del Fluido Celómico de Eisenia Fetida en el Crecimiento de Hongos Potencialmente Fitopatógenos

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