Open AccessEffect of silver nanoparticles and silver nitrate on growth of rice under biotic stress
Author(s) -
Ejaz Muhammad,
Raja Naveed Iqbal,
Mashwani ZiaUrRehman,
Ahmad Muhammad Sheeraz,
Hussain Mubashir,
Iqbal Muhammad
Publication year - 2018
Publication title -
iet nanobiotechnology
Language(s) - English
Resource type - Journals
ISSN - 1751-875X
DOI - 10.1049/iet-nbt.2018.0057
Subject(s) - silver nanoparticle , dry weight , shoot , silver nitrate , horticulture , chemistry , nanoparticle , nuclear chemistry , biology , materials science , nanotechnology
This study was organised to check the effect of silver nanoparticles and silver nitrate on rice growth against biotic stress. Silver nanoparticles were synthesised by using plant extract as reducing agent, followed by characterisation through UV Vis spectroscopy, XRD, EDS and SEM. Aspergillus application significantly reduced rice plant fresh mass (0.9%), dry mass (0.21%), root length (2.3%), shoot length (5.2%) and root number (1%) in comparison to control. Similarly, leaf area, leaf fresh mass, dry mass and leaf number were also reduced by 23.1, 0.02, 0.11 and 0.9%, respectively. AgNPs and AgNO 3 treatments increased the root length (16.2 & 12.8%), shoot length (21 & 20%), root number (8.1 & 6.8%), plant fresh weight (6.4 & 5%) and plant dry weight (4.6 & 3.5%) in 75mg/l treatment of AgNPs and AgNO 3 respectively. Similarly, AgNPs and AgNO 3 treatment (75 mg/l concentrations) reflected remarkable increase in leaf area (58.8 & 57.2 %), leaf number (4.3 & 3.7 %), leaf fresh weight (1.7 & 1.4 %) and leaf dry weight (0.9 & 0.8 %). Overall AgNPs showed more significant results as compared to AgNO 3 . The quantity of aflatoxins ranged from 3.1 to 7.7 μg/kg against tolerable limit (4 µg/kg). Overall AgNPs and AgNO 3 treatments showed significant results and it could be considered as a strategy for aflatoxin management in rice plants.