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Nano-pesticidal potential of Cassia fistula (L.) leaf synthesized silver nanoparticles (Ag@CfL-NPs): Deciphering the phytopathogenic

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Title Nano-pesticidal potential of Cassia fistula (L.) leaf synthesized silver nanoparticles (Ag@CfL-NPs): Deciphering the phytopathogenic
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Creator Mohammad Danish1*, Mohammad Shahid2,3 , Lukman Ahamad1 , Kashif Raees4 , Ashraf Atef Hatamleh5 , Munirah Abdullah Al-Dosary5 , Abdullah Mohamed6 , Yasmeen Abdulrhman Al-Wasel5 , Udai B. Singh3 and Subhan Danish7
 
Subject Cassia fistula, silver nanoparticles (Ag@CfL-NPs), phytopathogens, nano-pesticides, tomatoes (Solanum lycopersicum L.), antioxidant enzymes
 
Description Not Available
Plant-based synthesis of silver nanoparticles (Ag-NPs) has emerged as
a potential alternative to traditional chemical synthesis methods. In this
context, the aim of the present study was to synthesize Ag-NPs from
Cassia fistula (L.) leaf extract and to evaluate their nano-pesticidal potential
against major phyto-pathogens of tomato. From the data, it was found
that particle size of spherical C. fistula leaf synthesized (Ag@CfL-NPs) varied
from 10 to 20 nm, with the average diameter of 16 nm. Ag@CfL-NPs were
validated and characterized by UV-visible spectroscopy (surface resonance
peak λmax = 430 nm), energy dispersive spectrophotometer (EDX), Fourier
transform infrared (FTIR), and X-ray diffraction pattern (XRD), and electron
microscopy; scanning electron microscopy (SEM), and transmission electron
microscopy (TEM). The FTIR spectra verified the participation of various living
molecules (aromatic/aliphatic moieties and proteins) in synthesized Ag@CfL NPs. The anti-phytopathogenic potential of Ag@CfL-NPs was assessed
under in vitro conditions. Increasing doses of Ag@CfL-NPs exhibited an
inhibitory effect against bacterial pathogen Pseudomonas syringae and
400 µg Ag@CfL-NPs ml−1 caused a reduction in cellular viability, altered
bacterial morphology, and caused cellular death Furthermore, Ag@CfL NPs reduced exopolysaccharides (EPS) production and biofilm formation by
P. syringae Additionally, Ag@CfL-NPs showed pronounced antifungal activity
against major fungal pathogens. At 400 µg Ag@CfL-NPs ml−1
, sensitivity of tested fungi followed the order: Fusarium oxysporum (76%) > R. solani
(65%) > Sarocladium (39%). Furthermore, 400 µg Ag@CfL-NPs ml−1
inhibited
the egg-hatching and increased larval mortality of Meloidogyne incognita
by 82 and 65%, respectively, over control. Moreover, pot studies were
performed to assess the efficacy of Ag@CfL-NPs to phyto-pathogens using
tomato (Solanum lycopersicum L.) as a model crop. The applied phyto pathogens suppressed the biological, physiological, and oxidative-stress
responsiveness of tomatoes. However, 100 mg Ag@CfL-NPs kg−1
improved
overall performance and dramatically increased the root length, dry biomass,
total chlorophyll, carotenoid, peroxidase (POD), and phenylalanine ammonia
lyase (PAL) activity over pathogens-challenged tomatoes. This study is
anticipated to serve as an essential indication for synthesis of efficient nano control agents, which would aid in the management of fatal phyto-pathogens
causing significant losses to agricultural productivity. Overall, our findings
imply that Ag@CfL-NPs as nano-pesticides might be used in green agriculture
to manage the diseases and promote plant health in a sustainable way
Not Available
 
Date 2024-06-24T16:56:30Z
2024-06-24T16:56:30Z
2022-01-01
 
Type Research Paper
 
Identifier Not Available
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/83758
 
Language English
 
Relation Not Available;
 
Publisher Not Available