Nanophosphorus Fertilizer Stimulates Growth and Photosynthetic Activity and Improves P Status in Rice

Abstract

The efficiency of nanoparticles covered with type A gel and loaded with KH2PO4, as a source of P, was evaluated on growth, phosphorus concentration and accumulation, and photosynthesis-related parameters in rice plants (Oryza sativa L. ssp. indica) cv. Morelos A-2010, under greenhouse conditions. Plants were treated for 14 days with P concentrations equivalent to 50 and 100% of those established in the Yoshida nutrient solution. Sources of P were KH2PO4, nano-KH2PO4, and nano-KH2PO4 with trypsin; control treatments were distilled water and nanoparticles with type A gel. The solutions were renewed every 7 d. Rice plants exhibited differential P absorption in function of the P source tested. P supplied by KH2PO4 had a higher uptake rate than P supplied by nano-KH2PO4, alone or with trypsin. Nevertheless, nano-KH2PO4 promoted higher physiological efficiency for P in both roots and shoots, which consequently induced higher biomass accumulation in these organs. P concentration in shoots, as well as P accumulation in shoots and roots, were positively correlated with the photosynthetic rate. Also, nano-KH2PO4 increased instant water use efficiency in rice plants.

FePO4 NPs Are an Efficient Nutritional Source for Plants: Combination of Nano-Material Properties and Metabolic Responses to Nutritional Deficiencies

“…Positive effects brought about by applications of P-containing NPs on plant growth and physiology have been described in soybean ( Liu and Lal, 2014 ), peanut ( Hegab et al, 2018 ) and rice ( Miranda-Villagómez et al, 2019b ). In these investigations however the effectiveness of these compounds was appraised against non-nanomaterials having a different chemical composition from that of the NPs used ( Liu and Lal, 2014 ; Miranda-Villagómez et al, 2019a ; Miranda-Villagómez et al, 2019b ).…”

“…Positive effects brought about by applications of P-containing NPs on plant growth and physiology have been described in soybean ( Liu and Lal, 2014 ), peanut ( Hegab et al, 2018 ) and rice ( Miranda-Villagómez et al, 2019b ). In these investigations however the effectiveness of these compounds was appraised against non-nanomaterials having a different chemical composition from that of the NPs used ( Liu and Lal, 2014 ; Miranda-Villagómez et al, 2019a ; Miranda-Villagómez et al, 2019b ). The same is true for Fe, given that the literature available mostly compares the effects of Fe-containing NPs with other forms of the micronutrient such as FeCl 3 and Fe(III)-EDTA ( Ghafariyan et al, 2013 ; Rui et al, 2016 ; Hu et al, 2017 ; Palmqvist et al, 2017 ; Yuan et al, 2018 ).…”

Antioxidant Enzyme Activities Correlated with Growth Parameters of Wheat Sprayed with Silver and Gold Nanoparticle Suspensions

“…They have also been found to enhance root growth branching, biomass and photosynthetic pigments [9,11]. Enhanced nutrient use efficiency and photosynthetic activity ultimately result in an increased yield and a better grain quality [12,13]. Nanoparticles have also been found to have antioxidant activity [14].…”

Growth and yield performances of rice (Oryza sativa var. nerica) after exposure to biosynthesized nanoparticles

“…This increase in yield and yield components possibly is attributed to the increases in photosynthetic pigments, growth parameters, and IAA of treated rice plants. These yield performance may be linked to higher physiological efficiency for water use, phosphorus absorption and retention, photosynthetic rate, and biomass accumulation (Miranda-Villagomez et al 2019). Spraying the rice plant ( Fig.…”