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Euro Biotechnology 2016
November 07-09, 2016
Volume 6, Issue 7(Suppl) J Biotechnol Biomater
ISSN: 2155-952X JBTBM, an open access journal
conferenceseries .com
November 07-09, 2016 Alicante, Spain
12th Euro Biotechnology Congress
Ricardo Hugo Lira-Saldivar et al., J Biotechnol Biomater 2016, 6:7(Suppl)
Possible applications of zinc oxide nanoparticles as promoters of seed germination and growth of
Solanaceae plants
Ricardo Hugo Lira-Saldivar1 , I Vera-Reyes2, B Mendez-Arguello2, R Ponce-Zambrano1, N A Ruiz-Torres1, E Mendoza-Mendoza2, L A Garcia-Cerda2 and R H
Lira-Saldivar1
1Universidad Autonoma Agraria Antonio Narro, Mexico
2Centro del Investigación en Química Aplicada, Mexico
We examined the influence of ZnO nanoparticles (NPs) with and without silver added on germination of Solanum
lycopersicum (tomato) seeds and on growth of Capsicum annuum (pepper) seedlings. The S. lycopersicum seeds were
treated with 0, 5, 10, 15 and 20 mgL-1 of pure ZnO NPs. According to results, the 5 mg L-1 dose promoted better germination
(93%), greater root and shoot length (13.35 cm and 3.25 cm respectively), as well seed vigor index, which was increased
three times (1546.28±100.30) regarding to control (509.60±51.10). Our findings indicate that ZnO NPs promoted better
seed germination by enhancing the antioxidative defense system, which finally resulted in increased seedling growth. The C.
Annuum assays indicate that compared to control plants, treatments exposed to foliar application of 50 mgL-1 of ZnO NPs+Ag
(2.5%), were those that had a significant higher shoot and root growth, as well greater biomass production with higher values
of height (16.8%), leaf area (30.3%), total biomass production (59.5%), root dry biomass (112.5%), stem dry biomass (76%)
and root length (24.4%). Regarding to control plants, those treated with ZnO NPs+Ag (2.5%), reported a quantitative increase
of the chlorophyll index (8%) and leaves number (32.6%). The biological effect of the NPs applied, could be related to the zinc
activity as a precursor in the production of auxins, which in turn promote cell division and elongation, as well by its influence
on the reactivity of indol acetic acid, that acts as hormonal phytoestimulant.
Biography
Ricardo Hugo Lira-Saldivar has completed his PhD from University of California, USA. He is a Senior Researcher at the Centro de Investigacion en Quimica
Aplicada (CIQA) belonging to the Federal Government, located in Saltillo, Coahuila, Mexico. He has published more than 35 papers in reputed journals and has
been serving as an Editorial Board Member of several journals.