Growth Stimulation of Dwarf Peas (Pisum sativum L.) through Homeopathic Potencies of Plant Growth Substances

2004 ◽  
Vol 11 (5) ◽  
pp. 281-292 ◽  
Author(s):  
S. Baumgartner ◽  
A. Thurneysen ◽  
P. Heusser
Keyword(s):  
Pisum Sativum ◽  
Plant Growth ◽  
Growth Stimulation ◽  
Growth Substances ◽  
Pisum Sativum L ◽  
Plant Growth Substances ◽  
Stimulation Of

scholarly journals Metal Homeostasis and Gas Exchange Dynamics in Pisum sativum L. Exposed to Cerium Oxide Nanoparticles

2020 ◽  
Vol 21 (22) ◽  
pp. 8497
Author(s):  
Elżbieta Skiba ◽  
Monika Pietrzak ◽  
Magdalena Gapińska ◽  
Wojciech M. Wolf
Keyword(s):  
Pisum Sativum ◽  
Plant Growth ◽  
Inductively Coupled Plasma ◽  
Growth Control ◽  
Optical Emission ◽  
Growth Stimulation ◽  
Continuum Source ◽  
Inductively Coupled ◽  
Pisum Sativum L ◽  
Hydroponic Cultivation

Cerium dioxide nanoparticles are pollutants of emerging concern. They are rarely immobilized in the environment. This study extends our work on Pisum sativum L. as a model plant, cultivated worldwide, and is well suited for investigating additive interactions induced by nanoceria. Hydroponic cultivation, which prompts accurate plant growth control and three levels of CeO2 supplementation, were applied, namely, 100, 200, and 500 mg (Ce)/L. Phytotoxicity was estimated by fresh weights and photosynthesis parameters. Additionally, Ce, Cu, Zn, Mn, Fe, Ca, and Mg contents were analyzed by high-resolution continuum source atomic absorption and inductively coupled plasma optical emission techniques. Analysis of variance has proved that CeO2 nanoparticles affected metals uptake. In the roots, it decreased for Cu, Zn, Mn, Fe, and Mg, while a reversed process was observed for Ca. The latter is absorbed more intensively, but translocation to above-ground parts is hampered. At the same time, nanoparticulate CeO2 reduced Cu, Zn, Mn, Fe, and Ca accumulation in pea shoots. The lowest Ce concentration boosted the photosynthesis rate, while the remaining treatments did not induce significant changes. Plant growth stimulation was observed only for the 100 mg/L. To our knowledge, this is the first study that demonstrates the effect of nanoceria on photosynthesis-related parameters in peas.

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