An Insectivorous Plant

Abstract 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.

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In vitro propagation of insectivorous plant Nepenthes khasiana Hook. F.- an endangered ornamental and ethnomedicinal species

Vegetos- An International Journal of Plant Research ◽

10.1007/s42535-021-00310-1 ◽

2021 ◽

Author(s):

Bhavana Joshi ◽

G. S. Panwar ◽

S. K. Singh

Keyword(s):

In Vitro Propagation ◽

Insectivorous Plant ◽

Nepenthes Khasiana

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An efficient in vitro propagation protocol for Pinguicula lusitanica, a rare insectivorous plant

Plant Cell Tissue and Organ Culture (PCTOC) ◽

10.1007/s11240-008-9423-8 ◽

2008 ◽

Vol 95 (2) ◽

pp. 239-243 ◽

Cited By ~ 10

Author(s):

Sandra Gonçalves ◽

Ana L. Escapa ◽

Tomás Grevenstuk ◽

Anabela Romano

Keyword(s):

In Vitro Propagation ◽

Insectivorous Plant

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Acid phosphatase and protease release by the insectivorous plant Drosera rotundifolia

Canadian Journal of Botany ◽

10.1139/b77-058 ◽

1977 ◽

Vol 55 (4) ◽

pp. 480-488 ◽

Cited By ~ 15

Author(s):

Finbarr G. Clancy ◽

Michael D. Coffey

Keyword(s):

Enzyme Activity ◽

Acid Phosphatase ◽

Hydrolytic Enzymes ◽

Enzyme Release ◽

Optimal Activity ◽

Drosera Rotundifolia ◽

Phosphorylated Compounds ◽

Insectivorous Plant

The leaves of the insectivorous plant Drosera rotundifolia L. produced extracellular hydrolytic enzymes in response to feeding with gelatin. Enzyme release was first detected 1 to 2 days after feeding, reached a maximum on day 4, and then gradually declined. Optimal activity of both acid phosphatase (orthophosphoric-monoester phosphohydrolase (acid optimum), EC 3.1.3.2) and protease enzymes was in the acidic range of pH. The acid phosphatase attacked a range of phosphorylated compounds but its p-nitrophenylphosphatase (PNPPase) and ribonucleoside triphosphatase activities were highest. It displayed relatively low phosphomonoesterase (EC 3.1.3.1, 3.1.3.2) activity. Both acid phosphatase and protease enzymes were insensitive to the sulphydryl inhibitor N-ethylmaleimide. The acid phosphatase was strongly inhibited by fluoride and orthophosphate. The nature of the apparent induction of hydrolase enzyme activity is briefly discussed.

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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

REINWARDTIA ◽

10.14203/reinwardtia.v18i2.3749 ◽

2019 ◽

Vol 18 (2) ◽

Author(s):

Romita Devi Ngangbam ◽

Naorem Premita Devi ◽

Maibam Haripriya Devi ◽

Potsangbam Kumar Singh

Keyword(s):

Iucn Red List ◽

Small Population ◽

Ex Situ ◽

Conservation Strategies ◽

Endangered Plant ◽

General Description ◽

Physico Chemical ◽

Chemical Studies ◽

Insectivorous Plant ◽

Taxonomic Studies

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.

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Distribusi Nepenthes spp. di Hutan Kalampangan

Journal of Environment and Management ◽

10.37304/jem.v1i2.1753 ◽

2020 ◽

Vol 1 (2) ◽

pp. 164-168

Author(s):

Lasmitha Dewi ◽

Agus Haryono ◽

Yohanes E. Gunawan

Keyword(s):

Forest Fires ◽

Land Conversion ◽

Central Kalimantan ◽

Peat Swamp ◽

Qualitative Descriptive ◽

Descriptive Approach ◽

Morisita Index ◽

Insectivorous Plant ◽

Nepenthes Gracilis

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.

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