Activity of polygalacturonases from Moniliophthora perniciosa depends on fungus culture conditions and is enhanced by Theobroma cacao extracts

Carvalho, Heliana Argôlo Santos; Ribeiro, Lidiane Figueredo; Pirovani, Carlos Priminho; Gramacho, Karina Peres; Micheli, Fabienne

doi:10.1016/j.pmpp.2013.04.001

Cited by 11 publications

(2 citation statements)

References 61 publications

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“…Morphologically, it was possible to observe that Isolated pathogens revealed a fast growth when favored by the cocoa supplement in the culture medium. This is consistent with a previous report in [21], wherein it was shown that media modified with cocoa favor the growth of Moniliophthora perniciosa. Group 2 underwent less than 48 h growth rates, accelerated from the 4th day of incubation.…”

Section: Microscopic Morphology Characterizationsupporting

confidence: 94%

Regional Evaluation of Fungal Pathogen Incidence in Colombian Cocoa Crops

2019

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The production of cocoa (Theobroma cacao L.) in Colombia has a significant environmental and socioeconomic importance as a promissory crop in the post-conflict process. The department of Norte de Santander has cocoa crops that are dramatically affected by fungal pathogens causing important losses during harvest and post-harvest. Therefore, the current study focused on the determination of the incidence of diseases caused by phytopathogenic fungi in cocoa crops, and the identification of primary phytopathogenic fungi found in biological material from different farms of the region. The study was conducted in four municipalities of the department, by sampling fruits infected with frosty pod rot (FPR) and black pod rot (BPR) that presented in situ incidence ranging from 0.37 to 21.58% and from 1.75 to 35.59%, respectively. The studied hybrid materials, together with clone TSH 65, were found to be the most susceptible, while the remaining clones were more tolerant, especially CCN 51, IMC 67, and ICS95. Fifteen strains were isolated using in vitro assays and then morphologically characterized both in solid media and by microscopy. Nine of them corresponded to the pathogen Moniliophthora roreri, and other six to Phytophthora palmivora. The isolated agents showed in vitro morphological variability, as well as the ability to adapt to different environments when growing in situ.

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Section: Microscopic Morphology Characterizationsupporting

confidence: 94%

Regional Evaluation of Fungal Pathogen Incidence in Colombian Cocoa Crops

2019

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“…It is suggested that some compounds are more concentrated in the roots and seeds and others in the green tissues of the aerial part (stems and leaves). This can be possible because each organ has a specialization that must fulfill according to its physiological function, which generated differences in the phenolic compounds profile [40]. For example, it was reported that leaf has the ability to synthesize phenolic metabolites as a rapid response to external stimuli such as microbial attack and light [41].…”

Section: Hplc-dad Analyses Of Methanolic Extractsmentioning

confidence: 99%

Determination of Chemical Constituents and Antioxidant Activities of Leaves and Stems from Jatropha cinerea (Ortega) Müll. Arg and Jatropha cordata (Ortega) Müll. Arg

Vega-Ruiz

Hayano-Kanashiro

Gámez-Meza

et al. 2021

Plants

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Jatropha species have been shown to be an important source of secondary metabolites with different biological effects. Jatropha cinerea (Ortega) Müll. Arg and Jatropha cordata (Ortega) Müll. Arg are distributed in the Northwestern region of Mexico, are adapted to extreme weather conditions and are widely used (stems, leaves, and sap) in traditional medicine. The aim of the present study was to carry out the phytochemical characterization and the evaluation of the antioxidant activity in methanolic extracts of stems and leaves from J. cinerea and J. cordata. The compounds present in the extracts of both species were characterized by ESI-IT-MS/MS and quantified by HPLC-DAD. The results showed that the stem extracts of both species are rich in phenolic acids, while the leaf extracts are rich in flavonoids. Some of the main compounds found were gallic acid, gentisic acid, 3,4-Dihydroxybenzoic acid, vitexin, isovitexin, and catechol. Both species showed high concentrations of phenols and total flavonoids and antioxidant activity. J. cordata showed the highest antioxidant capacity and the highest concentration of phenolic compounds. Overall, both Jatropha species are a natural source of antioxidant compounds with potential biotechnological uses.

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