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  1. Article ; Online: Characterization of rice straw lignin phenolics and evaluation of their role in pollen tube growth in

    Mankoo, Ramandeep Kaur / Kaur, Jasleen / Chahal, Gagandeep Kaur

    Natural product research

    2023  Volume 38, Issue 11, Page(s) 1844–1849

    Abstract: Rice straw lignin was ... ...

    Abstract Rice straw lignin was extracted
    MeSH term(s) Lignin/chemistry ; Cucurbita/chemistry ; Coumaric Acids/chemistry ; Oryza/chemistry ; Oryza/growth & development ; Pollen Tube/drug effects ; Pollen Tube/growth & development ; Phenols/chemistry ; Phenols/analysis ; Hydroxybenzoates/chemistry ; Caffeic Acids/chemistry ; Germination/drug effects ; Spectroscopy, Fourier Transform Infrared ; Magnetic Resonance Spectroscopy
    Chemical Substances Lignin (9005-53-2) ; Coumaric Acids ; ferulic acid (AVM951ZWST) ; Phenols ; p-coumaric acid (IBS9D1EU3J) ; Hydroxybenzoates ; Caffeic Acids ; phenolic acid (I3P9R8317T)
    Language English
    Publishing date 2023-06-16
    Publishing country England
    Document type Journal Article
    ZDB-ID 2185747-7
    ISSN 1478-6427 ; 1478-6419
    ISSN (online) 1478-6427
    ISSN 1478-6419
    DOI 10.1080/14786419.2023.2225126
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Synthesis of xylan and lignin based hydrogels and their use as growth media for rice (

    Kaur, Japanpreet / Dudeja, Isha / Chahal, Gagandeep Kaur / Mankoo, Ramandeep Kaur / Kaur, Ramandeep

    Natural product research

    2024  , Page(s) 1–10

    Abstract: Different hydrogels were synthesised using lignin and xylan (extracted from rice straw) as the raw material, PVA as matrix template, citric acid, and succinic acid as crosslinkers and were structurally characterised by FT-IR and SEM analysis. Citric acid ...

    Abstract Different hydrogels were synthesised using lignin and xylan (extracted from rice straw) as the raw material, PVA as matrix template, citric acid, and succinic acid as crosslinkers and were structurally characterised by FT-IR and SEM analysis. Citric acid cross-linked hydrogels caused loose bonding between polymers and resulted in formation of large pores whereas succinic acid cross-linked hydrogels were observed to have less porosity and tight bonding network. The swelling ratio and reswelling capacity of hydrogels revealed that lignin hydrogels outperformed all other hydrogels. All the synthesised hydrogels were tested for their use as soil culture media ingredient for the germination of rice seedlings. All the hydrogels performed well in stress conditions as compared to normal conditions. Xylan/lignin hydrogel and lignin hydrogels performed best under stress conditions. These hydrogels could be used effectively as an ingredient of soil culture media owing to their tendency to absorb and retain water properly.
    Language English
    Publishing date 2024-03-03
    Publishing country England
    Document type Journal Article
    ZDB-ID 2185747-7
    ISSN 1478-6427 ; 1478-6419
    ISSN (online) 1478-6427
    ISSN 1478-6419
    DOI 10.1080/14786419.2024.2324463
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Understanding of histological and physiological alterations in hull-less seeded pumpkin

    Kaur, Arshdeep / Chahal, Gagandeep Kaur / Dhatt, Ajmer Singh

    Scientia Horticulturae. 2022 Oct., v. 304 p.111321-

    2022  

    Abstract: Pumpkin seeds have great therapeutic value but remain underutilized due to its hulled character. However, a hull-less mutation revolutionized the fate of pumpkin seeds in the oil industry by omitting the decortication process. Therefore, the present ... ...

    Abstract Pumpkin seeds have great therapeutic value but remain underutilized due to its hulled character. However, a hull-less mutation revolutionized the fate of pumpkin seeds in the oil industry by omitting the decortication process. Therefore, the present research was conducted to understand the histological and physiological changes caused by this mutation in the developing seeds of pumpkin that produces the desired hull-less phenotype. In scanning electronic microscopy, a distinct five cell layered structure was observed in the seed coat of hulled (PCK-1) genotype, which was collapsed in the partially hulled (WT-2046) and the hull-less (PMK-1) genotypes. Also the seed coat layers increased continuously in hulled genotype until maturity; however, these declined after 20 DPA in the other two genotypes. Physiological studies revealed that protein, amino acid, starch and lipid content followed the same trend, but the wall components (pectin, hemicelulose, cellulose and lignin) differed significantly amongst the genotypes. The wall components increased continuously until maturity in the hulled genotype, but decreased after 20 DPA in the partially hulled and hull-less genotypes. Further, the correlation, PCA and cluster analysis also reinforced that the wall components especially the lignin was responsible in maintaining the seed coat structure in the hulled genotype and its reduction poses as a reason for the collapsed seed coat in other two genotypes. Lignin reduction was noticed at 20 DPA in the hull-less genotype and therefore, this stage can be used to identify the gene responsible for lignin synthesis in the seed coats.
    Keywords amino acids ; cellulose ; cluster analysis ; electron microscopy ; genes ; genotype ; histology ; industry ; lignin ; lipid content ; mutation ; oils ; pectins ; phenotype ; pumpkins ; seed coat ; starch ; therapeutics ; Cucurbita pepo ; Testa ; Wall components ; Sclerenchyma ; SEM
    Language English
    Dates of publication 2022-10
    Publishing place Elsevier B.V.
    Document type Article ; Online
    ZDB-ID 185557-8
    ISSN 0304-4238
    ISSN 0304-4238
    DOI 10.1016/j.scienta.2022.111321
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    Z 2810: Show issues

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  4. Article: A Single-Gene Mutation Changed the Architecture of Pumpkin Seed: A Review

    Chahal, Gagandeep Kaur / Kaur, Arshdeep / Dhatt, Ajmer Singh

    Journal of plant growth regulation. 2022 Jan., v. 41, no. 1

    2022  

    Abstract: Pumpkin seeds are used globally for snacks, bakery, and oil due to their nutritional and medicinal properties. The seeds of pumpkin have 35–45% oil, rich in health-enhancing fatty acids especially linoleic (52.7%), oleic (28.3%), and palmitic (12.7%). ... ...

    Abstract Pumpkin seeds are used globally for snacks, bakery, and oil due to their nutritional and medicinal properties. The seeds of pumpkin have 35–45% oil, rich in health-enhancing fatty acids especially linoleic (52.7%), oleic (28.3%), and palmitic (12.7%). However, the presence of thick leathery seed coat (hull) limits the use due to decortication process required for further use. A mutant carrying thin and papery layer overcame the barrier of cost, time, and labor for decortication of pumpkin seed. The recessive gene mutation prevents lignin deposition and leads to collapse of the middle testa layers of the pumpkin seed. Mutation also changed the color of seeds from white to olive-green and produced dark-colored oil. Seed testa remains the same as in wild variety with five distinct testa layers of epidermis (E), hypodermis (H), sclerenchyma (S), parenchyma (P), and innermost chlorenchyma (C) during the initial stages of development. The changes in the seed testa start with the lignification process, which coincides with the reduced polyamine content. Lignin deposition diminution also coincides with reduced expression of the genes or enzyme activities involved in secondary wall formation. This suggests that, the mutation led to a series of changes to bring about a single response, i.e., naked seed or hull-less seed. Thus, this mutation should be studied thoroughly to determine the effects causing reduced lignin deposition and production of hull-less seeds. This review is focused on the changes induced by mutation that causes hull-less seed trait and its implications for commercial use.
    Keywords chlorenchyma ; color ; enzymes ; labor ; lignification ; lignin ; mutants ; mutation ; oils ; plant growth ; polyamines ; pumpkins ; recessive genes ; sclerenchyma ; seed characteristics ; testa
    Language English
    Dates of publication 2022-01
    Size p. 113-118.
    Publishing place Springer US
    Document type Article
    Note Review
    ZDB-ID 586787-3
    ISSN 1435-8107 ; 0721-7595
    ISSN (online) 1435-8107
    ISSN 0721-7595
    DOI 10.1007/s00344-020-10289-9
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    In stock of ZB MED Bonn / Germany

    Z 5557: Show issues

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  5. Article ; Online: Foliar Thiourea Confers Moisture Stress Tolerance in Rainfed Maize Through Elevated Antioxidative Defence System, Osmolyte Accumulation and Starch Synthesis Grown Under Different Planting Methods

    Singh, Talveer / Sandhu, Parminder Singh / Chahal, Gagandeep Kaur / Walia, Sohan Singh

    J Plant Growth Regul. 2023 Jan., v. 42, no. 1 p.199-217

    2023  

    Abstract: Moisture stress induced by intra-season and terminal dry spells has been addressed as principal constraint for maize cultivation across the rainfed environment. A multi-location field experiment was conducted, to investigate the influence of different ... ...

    Abstract Moisture stress induced by intra-season and terminal dry spells has been addressed as principal constraint for maize cultivation across the rainfed environment. A multi-location field experiment was conducted, to investigate the influence of different levels of foliar-applied thiourea along with the variation across prevalent planting techniques and in situ moisture conservation measures on growth, physiology, hormonal changes, phenology, antioxidative defence system, grain yield, and biochemical traits of moisture-stressed rainfed maize. Three dry spells were assessed during pre-anthesis and grain-filling stages. Results revealed that crop growth and productivity was influenced negatively by dry spells, but the extent of reduction varied with variations across plant growth regulators and planting methods. Crop growth and grain yield was lowest in unsprayed and flat sowing, whereas significant improvements were recorded with foliar application of 1000 ppm thiourea (14.6% and 11%) along with ridge sown and mulched (16.7% and 13.8%) treatments. Tasselling and physiological maturity were earliest in flat sowing and unsprayed, whereas significant improvements across proline and relative leaf water content were observed in thiourea 1000 ppm and ridge sowing with mulch treatments in which leaf chlorophyll content index (35.5), leaf area index (4.42 and 4.44) and starch deposition (71.1% and 70.3%) were also highest ,but total sugars accumulation (2.41% and 2.60%) and protein degradation (10.9% and 11.0%) were lowest. In crux, ridge sowing in association with mulch and foliar application of thiourea 1000 ppm mitigated moisture stress in rainfed maize with amelioration across plant’s defence through elaborated antioxidative defence system, compatible osmolyte accumulation, starch biosynthesis and their assimilation into developing sink organs for achieving the highest productivity levels.
    Keywords antioxidant activity ; biosynthesis ; corn ; field experimentation ; filling period ; foliar application ; grain yield ; leaf area index ; leaf chlorophyll content ; leaves ; mulches ; phenology ; plant growth ; planting ; proline ; protein degradation ; starch ; stress tolerance ; thiourea ; water content
    Language English
    Dates of publication 2023-01
    Size p. 199-217.
    Publishing place Springer US
    Document type Article ; Online
    ZDB-ID 586787-3
    ISSN 1435-8107 ; 0721-7595
    ISSN (online) 1435-8107
    ISSN 0721-7595
    DOI 10.1007/s00344-021-10540-x
    Database NAL-Catalogue (AGRICOLA)

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    In stock of ZB MED Bonn / Germany

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