Multifaceted phytogenic silver nanoparticles by an insectivorous plant Drosera spatulata Labill var. bakoensis and its potential therapeutic applications

The current investigation highlights the green synthesis of silver nanoparticles (AgNPs) by the insectivorous plant Drosera spatulata Labill var. bakoensis, which is the first of its kind. The biosynthesized nanoparticles revealed a UV visible surface plasmon resonance (SPR) band at 427 nm. The natural phytoconstituents which reduce the monovalent silver were identified by FTIR. The particle size of the Ds-AgNPs was detected by the Nanoparticle size analyzer confirms that the average size of nanoparticles was around 23 ± 2 nm. Ds-AgNPs exhibit high stability because of its high negative zeta potential (− 34.1 mV). AFM studies also revealed that the Ds-AgNPs were spherical in shape and average size ranges from 10 to 20 ± 5 nm. TEM analysis also revealed that the average size of Ds-AgNPs was also around 21 ± 4 nm and the shape is roughly spherical and well dispersed. The crystal nature of Ds-AgNPs was detected as a face-centered cube by the XRD analysis. Furthermore, studies on antibacterial and antifungal activities manifested outstanding antimicrobial activities of Ds-AgNPs compared with standard antibiotic Amoxyclav. In addition, demonstration of superior free radical scavenging efficacy coupled with potential in vitro cytotoxic significance on Human colon cancer cell lines (HT-29) suggests that the Ds-AgNPs attain excellent multifunctional therapeutic applications.

Multifaceted Phytogenic Silver Nanoparticles by a Rare Insectivorous Plant Drosera Spatulata Labill Var.bakoensis and its Enhanced Antioxidant, Antibacterial, Antifungal and in Vitro Cytotoxic Studies

The current investigation highlights the green synthesis of silver nanoparticles (AgNPs) by the insectivorous plant Drosera spatulata Labill var.bakoensis, which is the first of its kind. The biosynthesized nanoparticles revealed a UV visible surface plasmon resonance (SPR) band at 427 nm. The natural phytoconstituents which reduce the monovalent silver were identified by FTIR. The particle size of the Ds-AgNPs was detected by the Nanoparticle size analyzer confirms that the average size of nanoparticles was around 23 ± 2 nm. Ds-AgNPs exhibit high stability because of their high negative zeta potential (-34.1 mV). AFM studies also revealed that the Ds-AgNPs were spherical in shape and average size ranges from 10 to 20 ± 5 nm. TEM analysis also revealed that the average size of Ds-AgNPs was also around 21 ± 4 nm and the shape is roughly spherical and well dispersed. The crystal nature of Ds-AgNPs was detected as a face-centered cube by the XRD analysis. Furthermore, studies on antibacterial and antifungal activities manifested outstanding antimicrobial activities of Ds-AgNPs compared with standard antibiotic Amoxyclav. In addition, demonstration of superior free radical scavenging efficacy coupled with potential in vitro cytotoxic significance on Human colon cancer cell lines (HT-29) suggests that the Ds-AgNPs attain excellent multifunctional therapeutic applications.

Drosera indica as an indoor biological control against mosquitoes

In the wild, carnivorous plants obtain some nutrients by trapping and digesting various invertebrates, and occasionally even small frogs and mammals. Because insects are one of the most common prey items for most carnivorous plants, they are sometimes called insectivorous plants The aim of this study is to identify Drosera indica indeed a carnivorous plant to control indoor mosquitoes in Metro Manila. Experimental Method of research. Controlled pot plant were placed in the Urban garden of UDM and observed to trapped insects. Another pot plant was placed inside the room that verified attracted insects. The Experimental period runs for 7 days from October 5 to 11, 2020. Conclusion: Based on the results and finding, Drosera indica is an insectivorous plant that preys on Aedes aegypti and Anopheles mosquitoes

Distribusi Nepenthes spp. di Hutan Kalampangan

Kalampangan peat swamp forests in Central Kalimantan is home for Nepenthes spp. However, the number of Nephentes has been reduced due to massive forest fires and land conversion for housing and agricultural purposes. Nepenthes is a unique plant with ability to prey insects, hence often referred to as 'insectivorous plant'. This study investigates the distribution of Nepenthes spp. in Kalampangan forest through ground check and qualitative descriptive approach. A total of six observation plots measuring of 2m x 2m were used purposively. The results show there are four Nepenthes species found, namely Nepenthes gracilis, Nepenthes mirabilis, Nepenthes gracilis cortis, and Nepenthes ampularia. The highest Morisita index is 1.06 while the lowest one is 1.01.

REDISCOVERY OF ALDROVANDA VESICULOSA L. (DROSERACEAE), AN ENDANGERED PLANT, AFTER SIX DECADES IN INDIA FROM MANIPUR WITH STUDIES ON MICROMORPHOLOGY AND PHYSICO-CHEMISTRY OF WATER

NGANGBAM, R. D., DEVI, N. P., DEVI, M. H. & SINGH, P. K. 2019. Rediscovery of Aldrovanda vesiculosa L. (Droseraceae), an endangered plant, from Manipur in India after six decades, with studies on micromorphology and physico-chemistry of water. Reinwardtia 18(2): 71‒80. — A small population of the aquatic insectivorous plant Aldrovanda vesiculosa L. of Droseraceae family was found growing in Yena pat, a small lake having an area of about 0.939 km2 in Bishnupur district, Manipur state, India. This marks its rediscovery in India after a long gap of 64 years. The present status of the species in the updated IUCN Red List of Threatened Species version 2018.2 is endangered and considered extinct from India. A general description and micromorpho-taxonomic studies are included. As the species is a bioindicator, physico-chemical studies of the water were also investigated so as to provide aid in both in-situ and ex-situ conservation strategies. Immediate conservation initiatives are warranted to maintain the species after its rediscovery.

Argentivorous molecules bearing three aromatic side arms: synthesis of triple-armed cyclens and their complexing property towards Ag+

Triple-armed cyclens bearing three aromatic side-arms were prepared, and the Ag+-ion-induced1H NMR and UV-vis spectral changes and X-ray structures suggested that the new armed cyclens behave like an insectivorous plant (Venus flytrap).