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  1. Article: In vitro regeneration and chromatographic fingerprint analysis of Aphanamixis polystachya (Wall.) Parker by HPTLC technique

    Rakhesh, Kanakarajan Vijayakumari / Ashalatha, Sunkarankutty Nair / Mahima, Karthikeyan

    SAAB South African journal of botany. 2022 Feb. 05,

    2022  

    Abstract: Aphanamixis polystachya is an evergreen tree belonging to the Meliaceae family used for centuries in traditional medicines. Various metabolites that were isolated from the barks showed high therapeutic value. Isolation of pharmaceutically active ... ...

    Abstract Aphanamixis polystachya is an evergreen tree belonging to the Meliaceae family used for centuries in traditional medicines. Various metabolites that were isolated from the barks showed high therapeutic value. Isolation of pharmaceutically active compounds imposes pressure on harvesting the plants from the wild, resulting in the endangerment of the tree. The development of an alternate method for the isolation of phytochemicals is the need of the hour. The current study evaluated the phytochemical screening of bioactive compounds from the tree parts and in vitro regenerated shoots of A. polystachya. Due to its recalcitrancy, tissue culture data remains inaccessible, and the present investigation was first attempt on developing a protocol for generating plantlets using in vitro culture. Murashige and Skoog's medium fortified with cytokinins like BAP (6-Benzylaminopurine), Kinetin, 2-ip (N⁶-(2-Isopentyl) Adenine), and TDZ (Thidiazuron) were used, and maximum biomass was produced from 3 mg/L of 2-ip. Meanwhile, HPTLC fingerprinting analysis on the tree parts (bark and leaves) and in vitro shoots showed similar diversity among metabolites. The secondary metabolites produced in the in vitro plants were the same with mature trees for standards like Rutin, Stigmasterol, β-Sitosterol, Piscidinol A, Bourjotinolone B, and Niloticin.
    Keywords Aphanamixis polystachya ; adenine ; bark ; benzyladenine ; biomass ; chromatography ; culture media ; cytokinins ; kinetin ; plantlets ; rutin ; secondary metabolites ; stigmasterol ; therapeutics ; thidiazuron ; tissue culture ; trees
    Language English
    Dates of publication 2022-0205
    Publishing place Elsevier B.V.
    Document type Article
    Note Pre-press version
    ZDB-ID 2126918-X
    ISSN 0254-6299
    ISSN 0254-6299
    DOI 10.1016/j.sajb.2022.02.008
    Database NAL-Catalogue (AGRICOLA)

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  2. Article ; Online: Molecular phylogeny of the

    Mahima, Karthikeyan / Sudhakar, Jana Venkata / Sathishkumar, Ramalingam

    Genome

    2020  Volume 63, Issue 12, Page(s) 597–606

    Abstract: The closely related species present in the subgenera ... ...

    Abstract The closely related species present in the subgenera of
    MeSH term(s) Biological Evolution ; DNA, Plant/genetics ; Ficus/anatomy & histology ; Ficus/classification ; Ficus/genetics ; Genetic Markers ; Phenotype ; Phylogeny ; Plant Leaves ; Sequence Analysis, DNA ; Species Specificity
    Chemical Substances DNA, Plant ; Genetic Markers
    Language English
    Publishing date 2020-08-21
    Publishing country Canada
    Document type Journal Article
    ZDB-ID 639031-6
    ISSN 1480-3321 ; 0831-2796
    ISSN (online) 1480-3321
    ISSN 0831-2796
    DOI 10.1139/gen-2019-0210
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article: Systematic reinstatement of highly sacred

    Mahima, Karthikeyan / Umapathy, Senthilkumar / Sudhakar, Jana Venkata / Sathishkumar, Ramalingam

    PhytoKeys

    2021  Volume 186, Page(s) 121–138

    Abstract: ... ...

    Abstract Ficuskrishnae
    Language English
    Publishing date 2021-12-09
    Publishing country Bulgaria
    Document type Journal Article
    ZDB-ID 2579891-1
    ISSN 1314-2003 ; 1314-2011
    ISSN (online) 1314-2003
    ISSN 1314-2011
    DOI 10.3897/phytokeys.186.74086
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article: Molecular phylogeny of the Ficus virens complex (Moraceae)

    Mahima, Karthikeyan / Sudhakar, Jana Venkata / Sathishkumar, Ramalingam

    Genome. 2020, v. 63, no. 12

    2020  

    Abstract: The closely related species present in the subgenera of Urostigma are challenging to classify due to the existence of overlapping morphological characteristics, which makes identification habitually problematic. It is still unresolved whether the species ...

    Abstract The closely related species present in the subgenera of Urostigma are challenging to classify due to the existence of overlapping morphological characteristics, which makes identification habitually problematic. It is still unresolved whether the species of the Ficus virens complex, which includes F. virens, F. middletonii, F. caulocarpa, F. concinna, and F. superba, are the same or distinct species due to the complexities in classification. To clarify the circumscription between the species and re-evaluate the taxonomical status, morphological characteristics were extensively examined; further, a phylogenetic reconstruction based on two DNA markers (ITS2 and trnH-psbA) in combination with morphological traits was carried out. The phylogenetic tree constructed using the combined morphology and DNA markers revealed that the five species should be demarcated as independent species. This study supports the importance of using both molecular and morphological data for efficient discrimination of species having high similarities. Further investigation into the species present in the subgenera Urostigma may provide additional information regarding the ancestral traits and its evolutionary history.
    Keywords DNA ; Ficus virens ; genome ; phylogeny
    Language English
    Size p. 597-606.
    Publishing place NRC Research Press
    Document type Article
    Note NAL-AP-2-clean
    ZDB-ID 639031-6
    ISSN 1480-3321 ; 0831-2796
    ISSN (online) 1480-3321
    ISSN 0831-2796
    DOI 10.1139/gen-2019-0210
    Database NAL-Catalogue (AGRICOLA)

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  5. Article ; Online: Untargeted Metabolomic Approach to Determine the Regulatory Pathways on Salicylic Acid-Mediated Stress Response in

    Rakhesh, Kanakarajan Vijayakumari / Ashalatha, Sunkarankutty Nair / Mahima, Karthikeyan / Baskar, Venkidasamy / Thiruvengadam, Muthu

    Molecules (Basel, Switzerland)

    2022  Volume 27, Issue 9

    Abstract: Plants thrive under abiotic and biotic stress conditions with the changes in phytohormones like salicylic acid (SA), resulting in the synthesis of secondary metabolites. The present study determines the response of plants in producing secondary ... ...

    Abstract Plants thrive under abiotic and biotic stress conditions with the changes in phytohormones like salicylic acid (SA), resulting in the synthesis of secondary metabolites. The present study determines the response of plants in producing secondary metabolites towards different SA concentrations at varying time intervals. Liquid chromatography-mass spectrometry-based metabolomics studies in
    MeSH term(s) Antioxidants/metabolism ; Metabolomics ; Salicylic Acid/metabolism ; Seedlings/metabolism ; Stress, Physiological
    Chemical Substances Antioxidants ; Salicylic Acid (O414PZ4LPZ)
    Language English
    Publishing date 2022-05-06
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 1413402-0
    ISSN 1420-3049 ; 1431-5165 ; 1420-3049
    ISSN (online) 1420-3049
    ISSN 1431-5165 ; 1420-3049
    DOI 10.3390/molecules27092966
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article: Systematic reinstatement of highly sacred Ficus krishnae based on differences in morphology and DNA barcoding from Ficus benghalensis (Moraceae)

    Mahima, Karthikeyan / Umapathy, Senthilkumar / Sudhakar, Jana Venkata / Sathishkumar, Ramalingam

    PhytoKeys. 2021 Dec. 09, v. 186

    2021  

    Abstract: Ficus krishnae is considered as native to India and is well-known for the peculiarity in nature of its cup-shaped leaves where both the vernacular name (Krishna Fig) and specific epithet were derived. The taxonomic status of Ficus krishnae is still ... ...

    Abstract Ficus krishnae is considered as native to India and is well-known for the peculiarity in nature of its cup-shaped leaves where both the vernacular name (Krishna Fig) and specific epithet were derived. The taxonomic status of Ficus krishnae is still unclear and currently treated as a subspecies or variety under Ficus benghalensis. In the present study, morphological characters and molecular analysis were employed to address their species delimitation. The spacer markers ITS2 and trnH-psbA were used for constructing phylogenetic trees along with morphometric analysis. Ficus krishnae distinctly differs from Ficus benghalensis by having cup-forming leaves and the nature of the aerial roots, stipules, petioles, ostiolar bracts of the receptacle, DNA content, chromosome differences and nodal anatomy. The results showed that the highest divergence is observed in trnH-psbA (20.8 ± 12.2), followed by ITS2 (5.7 ± 3.2). The phylogenetic tree construction using Bayesian analysis showed a divergent boundary between the two species suggesting that F. krishnae could be an independent species, not a variety of F. benghalensis. The present study’s findings support the view that these two floras can be treated as different species.
    Keywords Bayesian theory ; DNA ; DNA barcoding ; Ficus benghalensis ; chromosomes ; common names ; morphometry ; phylogeny ; India
    Language English
    Dates of publication 2021-1209
    Size p. 121-138.
    Publishing place Pensoft Publishers
    Document type Article
    ZDB-ID 2579891-1
    ISSN 1314-2003 ; 1314-2011
    ISSN (online) 1314-2003
    ISSN 1314-2011
    DOI 10.3897/phytokeys.186.74086
    Database NAL-Catalogue (AGRICOLA)

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  7. Article: Advancements and future prospective of DNA barcodes in the herbal drug industry.

    Mahima, Karthikeyan / Sunil Kumar, Koppala Narayana / Rakhesh, Kanakarajan Vijayakumari / Rajeswaran, Parameswaran Sathiya / Sharma, Ashutosh / Sathishkumar, Ramalingam

    Frontiers in pharmacology

    2022  Volume 13, Page(s) 947512

    Abstract: Ethnopharmacological relevance: ...

    Abstract Ethnopharmacological relevance:
    Language English
    Publishing date 2022-10-21
    Publishing country Switzerland
    Document type Journal Article ; Review
    ZDB-ID 2587355-6
    ISSN 1663-9812
    ISSN 1663-9812
    DOI 10.3389/fphar.2022.947512
    Database MEDical Literature Analysis and Retrieval System OnLINE

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