Exploring the bioactive compounds from endophytic bacteria of a medicinal plant: Ephedra foliata (Ephedrales: Ephedraceae)

Withania somnifera, commonly known as ashwagandha, is a wildly growing highly valuable medicinal plant, found throughout India. Ashwagandha has high medicinal value due to its antioxidant, antitumor, anti-inflammatory, immuno-modulatory, anti-ageing and rejuvenating properties. Since use of synthetic agrochemicals in the cultivation of medicinal plants is highly restricted due to their harmful effects on human health and environment, present study was aimed to explore the role of endophytic bacteria in enhancing the nutrient level in soil and growth of ashwagandha. In this study, growth promoting potential of endophytic bacterial strain PSE-1 was explored which was isolated from the roots of W. somnifera and identified as Pseudomonas sp. on the basis of 16s rRNA gene sequencing. Results obtained from the study suggest that endophytic bacteria Pseudomonas sp. plays important role in improving the nutrient level in soil and displayed beneficial effects on plant growth.

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Biological control of Pseudomonas syringae pv. actinidiae (Psa), the causal agent of bacterial canker of kiwifruit, using endophytic bacteria recovered from a medicinal plant

Biological Control ◽

10.1016/j.biocontrol.2017.03.003 ◽

2018 ◽

Vol 116 ◽

pp. 103-112 ◽

Cited By ~ 31

Author(s):

Wisnu Adi Wicaksono ◽

E. Eirian Jones ◽

Seona Casonato ◽

Jana Monk ◽

Hayley J. Ridgway

Keyword(s):

Biological Control ◽

Medicinal Plant ◽

Pseudomonas Syringae ◽

Endophytic Bacteria ◽

Causal Agent ◽

Bacterial Canker

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Antimicrobial potential of bacterial endophytes that inhabit New Zealands medicinal plant Pseudowintera colorata

New Zealand Plant Protection ◽

10.30843/nzpp.2015.68.5851 ◽

2015 ◽

Vol 68 ◽

pp. 444-444

Author(s):

N. Purushotham ◽

E.E. Jones ◽

J. Monk ◽

H.J. Ridgway

Keyword(s):

New Zealand ◽

Bioactive Compounds ◽

Endophytic Bacteria ◽

Antimicrobial Properties ◽

Chemical Constituent ◽

Phytopathogenic Fungi ◽

Biologically Active ◽

Dual Culture ◽

Dual Culture Assay ◽

Future Work

Medicinal plants are valued for the naturally bioactive compounds they produce International research has demonstrated that these plants contain endophytic microorganisms that through close interaction with the plants physiology contribute to the production of host metabolites either directly or via involvement in biochemical pathways Some endophytes can produce bioactive compounds that are either the same or similar to those originating from their host plants Pseudowintera colorata (horopito or NZ pepper tree) an endemic New Zealand plant used in traditional Maori medicine (rongo257;) is recognised for its antimicrobial properties The biologically active chemical constituent polygodial is used for treating candidiasis A total of 340 endophytic bacteria were recovered from surface sterilised horopito leaves stems and roots from nine sites across New Zealand; strains were assessed for their ability to inhibit the phytopathogens Neofusicoccum parvum N luteum Ilyonectria liriodendri Nectria galligena Pectobacterium atrosepticum and P brasiliensis using a dual culture assay Inhibition zones 1048726;3 mm were considered a positive result Out of the strains tested seven showed activity against all the phytopathogenic fungi tested and ten strains were active against at least three phytopathogens Future work will determine if any of the endophytic bacteria produce polygodial

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A Preliminary Screening of the Different of Secondary Metabolites Ruku-Ruku Leaves (Ocimum tenuiflorum Linnen) in West Sumatera

EKSAKTA Berkala Ilmiah Bidang MIPA ◽

10.24036/eksakta/vol20-iss2/193 ◽

2019 ◽

Vol 20 (2) ◽

pp. 17-24

Author(s):

Hesty Parbuntari ◽

Sri Benti Etika ◽

Melindra Mulia ◽

Elfanny Delvia

Keyword(s):

Secondary Metabolites ◽

Medicinal Plant ◽

Essential Oils ◽

Bioactive Compounds ◽

Light Exposure ◽

Phytochemical Screening ◽

Preliminary Screening ◽

West Sumatra ◽

Ocimum Tenuiflorum ◽

Qualitative Test

Ruku-ruku leaves are used to remove distinctive odors from fish in some cuisine of West Sumatra. The characteristic odor comes from secondary metabolites especially essential oils. Therefore, secondary metabolites in ruku-ruku leaves have the potential to be further investigated as a source of bioactive compounds. The phytochemical screening of ruku-ruku leaves is a preminilary qualitative test that needs to be done to maximise its function as a medicinal plant. Based on the result data, there are some different result of flavonoid, steroids, and triterpenoids identification. Ruku-ruku leaves from Pesisir Selatan and Padang Panjang shows less flavonoid compounds tham Payakumbuh, Batusangkar, and Lubuk Alung. Both of this city and Payakumbuh also gives less steroids and triterpenoids. The factor influencing this result is caused by several factors, namely temperature, humidity, light exposure, and salinity.

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