Phytochemical Compounds from Desert Plants to Management of Plant-parasitic Nematodes

Tucuch-Pérez, Marco Antonio; Arredondo-Valdés, Roberto; Hernández-Castillo, Francisco Daniel; Fuentes, Yisa María Ochoa; Alcala, Elan Iñaky Laredo; Anguiano-Cabello, Julia Cecilia

doi:10.1201/9781003251255-7

Aromatic and Medicinal Plants of Drylands and Deserts 2023

DOI: 10.1201/9781003251255-7

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Phytochemical Compounds from Desert Plants to Management of Plant-parasitic Nematodes

Marco Antonio Tucuch-Pérez¹,

Roberto Arredondo-Valdés²,

Francisco Daniel Hernández-Castillo³

et al.

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2024

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Characterization of finger millet extracts and evaluation of their nematicidal efficacy and plant growth promotion potential

Chrisantus,

Sarah,

Dorcas

et al. 2024

Plant Enviro Interactions

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Plant‐parasitic nematodes pose a significant threat to finger millet crops, potentially causing yield reduction of up to 70%. Extracts derived from finger millet varieties contain potent bioactive compounds that can mitigate nematode damage and promote plant growth. This study aimed at isolating and characterizing bioactive compounds from the finger millet varieties Ikhulule, Okhale‐1, and U‐15; evaluating the impact of Ikhulule and U‐15 extracts on the mortality of the root lesion nematode Pratylenchus vandenbergae; assessing the growth promotion effects of Ikhulule and U‐15 extracts on the finger millet variety Okhale‐1; and determining the efficacy of these extracts in managing plant‐parasitic nematodes under greenhouse conditions. Extracts were obtained from both leaves and roots and tested in vitro for nematode mortality and in vivo for growth promotion and nematode control. The results showed that finger millet extracts exhibited strong nematicidal properties in vitro, achieving a mortality rate of up to 98% against P. vandenbergae nematodes. Applying these extracts to finger millet shoots significantly reduced nematode populations in both soil and roots and decreased the reproductive factor to below one (1), indicating an effective nematode control. The study attributes the enhanced nematicidal effects of finger millet extracts to their bioactive compounds, particularly dodecanoic acid, phytol, 1,1,4a‐trimethyl‐6‐decahydro naphthalene, 2,3‐dihydro‐benzofuran, 2‐methoxy‐4‐vinylphenol and ethyl ester, and hexadecanoic acid. These findings suggest that finger millet‐derived extracts offer a natural solution for nematode management and broader agronomic benefits, ultimately contributing to overall plant health and productivity.

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Characterization of finger millet extracts and evaluation of their nematicidal efficacy and plant growth promotion potential

Chrisantus,

Sarah,

Dorcas

et al. 2024

Plant Enviro Interactions

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Hydroalcoholic Extracts from Pleurotus ostreatus Spent Substrate with Nematocidal Activity against Nacobbus aberrans Phytonematode and the Non-Target Species Panagrellus redivivus

Cruz-Arévalo,

Hernández-Velázquez,

Cardoso-Taketa

et al. 2024

Plants

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Pleurotus ostreatus, an edible mushroom widely consumed worldwide, generates a by-product known as spent mushroom substrate (SMS). This material has demonstrated biological activity against agricultural crop pathogens. In this study, we evaluated the nematocidal effectiveness of hydroalcoholic extracts (T5, T2, AT5, and AT2) derived from SMS of P. ostreatus against (J2) of the phytonematode Nacobbus aberrans and assessed their potential toxicity towards the non-target nematode Panagrellus redivivus. Among these extracts, AT5 exhibited the highest efficacy against N. aberrans and was the least toxic against P. redivivus. Liquid–liquid partitioning yielded the AQU fraction, which showed significant nematocidal activity against J2 (75.69% ± 8.99 mortality), comparable to chitosan. The GC-MS analysis revealed the presence of several compounds, including palmitic acid, linoleic acid, and 2,4-Di-tert-butylphenol. These findings are consistent with studies confirming the antagonistic effectiveness of these compounds against phytonematodes. Additionally, all extracts exhibited toxicity against P. redivivus, with T2 being the most toxic. Our findings demonstrate that while the AT5 extract displays antagonistic effectiveness against both N. aberrans and P. redivivus, it was the least toxic among the extracts tested. Thus, SMS of P. ostreatus holds potential as a source of nematocidal compounds, which could offer significant benefits for agricultural pest control.

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Phytochemical Compounds from Desert Plants to Management of Plant-parasitic Nematodes

Cited by 2 publications

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Characterization of finger millet extracts and evaluation of their nematicidal efficacy and plant growth promotion potential

Characterization of finger millet extracts and evaluation of their nematicidal efficacy and plant growth promotion potential

Hydroalcoholic Extracts from Pleurotus ostreatus Spent Substrate with Nematocidal Activity against Nacobbus aberrans Phytonematode and the Non-Target Species Panagrellus redivivus

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