Silver nanoparticles (AgNPs) induced impairment of in vitro pollen performance of Peltophorum pterocarpum (DC.) K. Heyne

Increasing use of silver nanoparticles (AgNPs) in myriad applications including electronics, medicines and agriculture has led to serious concerns regarding its release to plant ecosystems. Over the years, numerous studies have demonstrated the toxic impact of AgNPs in a variety of cell and tissue s...

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Veröffentlicht in:Ecotoxicology (London, England). - 1992. - 29(2020), 1 vom: 30. Jan., Seite 75-85
1. Verfasser: Dutta Gupta, S (VerfasserIn)
Weitere Verfasser: Saha, N, Agarwal, A, Venkatesh, V
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2020
Zugriff auf das übergeordnete Werk:Ecotoxicology (London, England)
Schlagworte:Journal Article Peltophorum pterocarpum Phytotoxicity Pollen germination Polynomial model Silver nanoparticles Tube growth Silver 3M4G523W1G
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520 |a Increasing use of silver nanoparticles (AgNPs) in myriad applications including electronics, medicines and agriculture has led to serious concerns regarding its release to plant ecosystems. Over the years, numerous studies have demonstrated the toxic impact of AgNPs in a variety of cell and tissue systems involved in vegetative growth across a wide range of plant species. However, assessing their impact on haploid phase of plant life cycle was restricted only to a study with Kiwifruit. In this study, in vitro pollen performance of Peltophorum pterocarpum at two endpoints i.e., germination and tube growth was assessed to evaluate the impact of nanoparticulate or ionic form of silver. Increasing concentrations of AgNO3/AgNPs significantly reduced the pollen germination and retarded the tube growth. The EC 50 values indicated a more potent toxic effect of AgNPs than AgNO3 on pollen germination as well as tube growth. Impairment of pollen performance was more pronounced at the stage of emergence of pollen tube. Extensive alterations in the muri and lumen of exine as revealed through SEM analysis and subsequent blockage of germpore might disrupt the emergence of pollen tube. The dynamics of pollen tube growth was analyzed with polynomial models of different degrees. A high degree of polynomial, the quintic model was able to approximate the real data points with highest coefficient of determination and smallest RMSE, compared to other models. An oscillating pattern of tube growth was portrayed with the passage of time in all the treatments that fits well with the established mechanistic oscillatory model of tube growth. It appears that exposure to AgNO3/AgNPs inhibited pollen germination and retarded tube growth without affecting the oscillatory behavior of tip-growth 
650 4 |a Journal Article 
650 4 |a Peltophorum pterocarpum 
650 4 |a Phytotoxicity 
650 4 |a Pollen germination 
650 4 |a Polynomial model 
650 4 |a Silver nanoparticles 
650 4 |a Tube growth 
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650 7 |a 3M4G523W1G  |2 NLM 
700 1 |a Saha, N  |e verfasserin  |4 aut 
700 1 |a Agarwal, A  |e verfasserin  |4 aut 
700 1 |a Venkatesh, V  |e verfasserin  |4 aut 
773 0 8 |i Enthalten in  |t Ecotoxicology (London, England)  |d 1992  |g 29(2020), 1 vom: 30. Jan., Seite 75-85  |w (DE-627)NLM098212214  |x 1573-3017  |7 nnns 
773 1 8 |g volume:29  |g year:2020  |g number:1  |g day:30  |g month:01  |g pages:75-85 
856 4 0 |u http://dx.doi.org/10.1007/s10646-019-02140-z  |3 Volltext 
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