Durantol - a phytosterol antifungal contributor from Duranta repens Linn. For organic Management of Sorghum Downy Mildew

Singh, Harvinder; Zameer, Farhan; Khanum, Shaukath Ara; Garampalli, Rajkumar H.

doi:10.1007/s10658-016-0951-5

Cited by 11 publications

(6 citation statements)

References 40 publications

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“…Phytosterols, as well, express their toxicity against fungi via interference with cell membrane integrity (Augustin et al, 2011; Singh et al, 2016), playing an important role in fundamental biological processes like signal transduction, cellular sorting, cytoskeleton reorganization and infection process (Simons and Ikonen, 2000; Simons and Ehehalt, 2002). Regarding β-sitosterol, it has been reported that its exogenous application may favor an increased resistance to fungal diseases, presumably in connection with the loss of membrane integrity of the plant pathogens (Siebers et al, 2016).…”

Section: Resultsmentioning

confidence: 99%

Buckwheat Hull Extracts Inhibit Aspergillus flavus Growth and AFB1 Biosynthesis

et al. 2019

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Fungal contamination poses at risk the whole food production chain - from farm to fork - with potential negative impact on human health. So far, the insurgence of pathogens has been restrained by the use of chemical compounds, whose residues have gradually accumulated determining toxic effects in the environment. Modern innovative techniques imply the use of natural and eco-sustainable bioactive plant molecules as pathogens and pests-control agents. These may be profitably recovered in large amounts at the end of industrial milling processes. This is the case of the non-digestible hull of common buckwheat ( Fagopyrum esculentum Moench), a natural source of polyphenols, tocopherols, phytosterols and fatty acids. We extract these compounds from the hull of buckwheat; apply them to Aspergillus flavus - aflatoxin producer - under in vitro conditions, checking their ability to inhibit fungal growth and aflatoxin biosynthesis. Moreover, a solvent free method implying the adoption of supercritical CO 2 as solvent was set up to extract lipophilic molecules from the buckwheat’ hulls. Positive results in controlling fungal growth and aflatoxin biosynthesis let infer that the extracts could be further tested also under in vivo conditions.

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Section: Resultsmentioning

confidence: 99%

Buckwheat Hull Extracts Inhibit Aspergillus flavus Growth and AFB1 Biosynthesis

et al. 2019

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“…Biological control offers a safer, environmental-friendly alternative without these shortcomings. In recent years, botanical pesticides and their derivatives have attracted extensive attention due to their effective control of various plant pathogens with minimal or no side effects (Chen et al, 2016 ; Singh et al, 2016 ). For example, the Duranta repens aqueous extract (durantol) exhibits promising inhibition against sorghum downy mildew ( Peronosclerospora sorghi ) (Singh et al, 2016 ).…”

Section: Introductionmentioning

confidence: 99%

“…In recent years, botanical pesticides and their derivatives have attracted extensive attention due to their effective control of various plant pathogens with minimal or no side effects (Chen et al, 2016 ; Singh et al, 2016 ). For example, the Duranta repens aqueous extract (durantol) exhibits promising inhibition against sorghum downy mildew ( Peronosclerospora sorghi ) (Singh et al, 2016 ). The pomegranate peel aqueous extract (punicalagins and ellagic acid) shows antifungal activity on Fusarium wilt of tomato caused by Fusarium oxysporum f. sp.…”

Section: Introductionmentioning

confidence: 99%

The heat shock protein 20 gene editing suppresses mycelial growth of Botryosphaeria dothidea and decreases its pathogenicity to postharvest apple fruits

Huang

Liu

et al. 2022

Front. Microbiol.

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Apple ring rot caused by Botryosphaeria dothidea is an essential and prevalent disease in the apple orchard in China. Our previous study demonstrated that dimethyl trisulfide (DT) from Chinese leek (Allium tuberosum) significantly suppressed the mycelial growth of B. dothidea and inhibited the incidence of apple ring rot postharvest. However, the mechanism underlying the inhibitory role of DT against B. dothidea is not fully understood. Comparing the control and the DT-treated B. dothidea mycelial transcriptomes revealed that heat shock protein 20 (Hsp20) strongly responded to DT treatment. This study identified four Hsp20 genes throughout the B. dothidea genome (BdHsp20_1-4). Each BdHsp20 gene had a conserved ACD with a variable N-terminal region and a short C-terminal extension. The segmental duplication event has contributed to the expansion of the BdHsp20 gene family. Compared to the wild-type strain, the CRISPR/Cas9 gene-edited BdHsp20 mutant (ΔBdHsp20) decreased the mycelial growth by 55.95% and reduced the disease symptom in postharvest apple fruit by 96.34%. However, the BdHsp20 complemented strain (ΔBdHsp20_C) significantly restored the growth and pathogenicity, which suggested that the BdHsp20 gene was closely involved in the growth and pathogenicity of B. dothidea. This study would accelerate the exploration of the molecular mechanism of the inhibitory effect of DT against B. dothidea and also provide new insights for the management of apple ring rot disease.

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“…Studies have reported the plant's antioxidant (Dressler et al, 2014), antifungal (Sharma et al, 2012), antibacterial (Ogbuagu et al, 2015) and antimalarial (Majunatha et al, 2013) activities. Phytochemicals including flavonoids, alkaloids, durantosides (I, II, III, IV), saponins, steroidal glycosides, beta-sitoserol, naringenin, sucrose, raffinose, acetosides, triterpenes have been reportedly isolated from the plant (Anis et al, 2002;Ahmed et al, 2009;Singh et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Aqueous Leaf Extract of Duranta repens Promotes Seed Germination and Seedling Growth of Salinity-Stressed Solanum lycopersicum Seedlings.

Osineye

2018

Fountain Journal of Natural and Applied Sciences

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Aqueous extract of Duranta repens leaves was investigated for its allelopathic effect on Solanum lycopersicum seedlings germinated and grown under salinity condition. The study was carried out using both laboratory petridish and pot assays to simulate the plantâ€™s immediate environmental conditions. The experiment consisted of 5 groups (1-5) each containing 4 replicates (of 10 seeds). Group 1 was treated with distilled water; Group 2 was treated with 5 mM NaCl; Group 3 was treated with Duranta repens aqueous leaf extract, Group 4 was treated with a mixture of 5 mM NaCl and the extract (2:1 v/v) and Group 5 was treated with a mixture of 5 mM NaCl and the extract (1:2 v/v). Results from the studies revealed that treatment with NaCl caused significant (p < 0.05) reduction in percentage germination and growth parameters (plumule and radicle lengths) of S. lycopersicum seedlings, when compared to those treated with distilled water and D. rupens aqueous leaf extract. NaCl treatment (Group 2) also caused an increase in malondialdehyde (MDA) and also increased the activities of superoxide dismutase (SOD) and catalase (CAT) while reducing chlorophyll concentration of the plants. However, in the presence of the extract, the adverse effects of the NaCl were attenuated, implying that the extract improved tolerance of S. lycopersicum seedlings. In conclusion, the findings of this study indicate that the constituents of the extract may play a positive role in plant survival under saline conditions and could be employed in the management of soil salinity problem in agriculture.

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Durantol - a phytosterol antifungal contributor from Duranta repens Linn. For organic Management of Sorghum Downy Mildew

Cited by 11 publications

References 40 publications

Buckwheat Hull Extracts Inhibit Aspergillus flavus Growth and AFB1 Biosynthesis

Buckwheat Hull Extracts Inhibit Aspergillus flavus Growth and AFB1 Biosynthesis

The heat shock protein 20 gene editing suppresses mycelial growth of Botryosphaeria dothidea and decreases its pathogenicity to postharvest apple fruits

Aqueous Leaf Extract of Duranta repens Promotes Seed Germination and Seedling Growth of Salinity-Stressed Solanum lycopersicum Seedlings.

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