KANIVALAN IWAR

Dr. KANIVALAN IWAR

orcid

Research Focus & Metrics

Academic Career Length

5Years (2022-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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Journal Article
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KIKANIVALAN IWAR
KANIVALAN IWAR
KOKingsley Ochar
Kingsley Ochar
Yun Am SeoYun Am Seo
Yun Am Seo
Bo-Keun HaBo-Keun Ha
Bo-Keun Ha
Seong-Hoon KimSeong-Hoon Kim
Seong-Hoon Kim
The genus Allium plants, including onions, garlic, leeks, chives, and shallots, have long been recognized for their potential health benefits, particularly in oxidative and cancer prevention. Among them, onions and garlic have been extensively studied, unveiling promising biological activities that are indicative of their potential as potent antioxidant and anticancer agents. Research has revealed a rich repository of bioactive compounds in Allium species, highlighting their antioxidative properties and diverse mechanisms that target cancer cells. Compounds such as allicin, flavonoids, and organosulfur compounds (OSCs) exhibit notable antioxidant and anticancer properties, affecting apoptosis induction, cell cycle arrest, and the inhibition of tumor proliferation. Moreover, their antioxidant and anti-inflammatory attributes enhance their potential in cancer therapy. Studies exploring other Allium species beyond onions and garlic have revealed similar biological activities, suggesting a broad spectrum of natural products that could serve as promising candidates for developing novel anticancer treatments. Understanding the multifaceted potential of Allium plants will pave the way for innovative strategies in oxidative and cancer treatment and prevention, offering new avenues for pharmaceutical research and dietary interventions. Therefore, in this review, we compile an extensive analysis of the diversity of various Allium species, emphasizing their remarkable potential as effective agents.

19 March 2024 in Antioxidants
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KIKANIVALAN IWAR
KANIVALAN IWAR
KDKebede Taye Desta
Kebede Taye Desta
KOKingsley Ochar
Kingsley Ochar
Seong-Hoon KimSeong-Hoon Kim
Seong-Hoon Kim
This study explored the glucosinolate (GSL) content in Brassica plants and utilized in silico analysis approach to assess their antioxidant capabilities. GSLs, present abundantly in Brassica vegetables, offer potential health advantages, including antioxidant effects. Employing Ultra-Performance Liquid Chromatography (UPLC) coupled with tandem mass spectrometry (MS/MS), major GSLs were identified in 89 accessions from diverse species and subspecies. Statistical analysis and principal component analysis unveiled significant GSL variation and potential correlations among the Brassica germplasms. This study unveils the dominance of aliphatic GSLs over aromatic and indolyl compounds in all the accessions. Notably, Gluconapin (GNA) (33,049.23 µmol·kg−1 DW), Glucobrassicanapin (GBN) (9803.82 µmol·kg−1 DW), Progoitrin (PRO) (12,780.48 µmol·kg−1 DW) and Sinigrin (SIN) (14,872.93 µmol·kg−1 DW) were the most abundant compounds across the analyzed accessions. Moreover, in silico docking studies predicted promising antioxidant activity by evaluating the interactions of each GSL with antioxidant enzymes. Specifically, Sinigrin and Gluconapin exhibited a notably weaker influence on antioxidant enzymes. This provides key insights into the antioxidant potential of Brassica germplasm and highlights the importance of in silico analysis for evaluating bioactive properties. In general, the results of this study could be utilized in breeding programs to maximize GSL levels and antioxidant properties in Brassica crops and for developing functional foods with enhanced health benefits.

Verified
Journal Article
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Seong-Hoon KimSeong-Hoon Kim
Seong-Hoon Kim
KOKingsley Ochar
Kingsley Ochar
KIKANIVALAN IWAR
KANIVALAN IWAR
YLYoon-Jung Lee
Yoon-Jung Lee
HKHae Ju Kang
Hae Ju Kang
YNYoung-Wang Na
Young-Wang Na
In this study, the variability of major glucosinolates in the leaf lamina of 134 Chinese cabbage accessions was investigated using Acquity ultra-performance liquid chromatography (UPLC-ESI-MS/MS). A total of twenty glucosinolates were profiled, of which glucobrassicanapin and gluconapin were identified as the predominant glucosinolates within the germplasm. These two glucosinolates had mean concentration levels above 1000.00 μmol/kg DW. Based on the principal component analysis, accessions IT186728, IT120044, IT221789, IT100417, IT278620, IT221754, and IT344740 were separated from the rest in the score plot. These accessions exhibited a higher content of total glucosinolates. Based on the VIP values, 13 compounds were identified as the most influential and responsible for variation in the germplasm. Sinigrin (r = 0.73), gluconapin (r = 0.78), glucobrassicanapin (r = 0.70), epiprogoitrin (r = 0.73), progoitrin (r = 0.74), and gluconasturtiin (r = 0.67) all exhibited a strong positive correlation with total glucosinolate at p < 0.001. This indicates that each of these compounds had a significant influence on the overall glucosinolate content of the various accessions. This study contributes valuable insights into the metabolic diversity of glucosinolates in Chinese cabbage, providing potential for breeding varieties tailored to consumer preferences and nutritional demands.

14 November 2024 in Agronomy
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DKDong_Kwan Kim
Dong_Kwan Kim
KIKANIVALAN IWAR
KANIVALAN IWAR
KOKingsley Ochar
Kingsley Ochar
SPSin-Young Park
Sin-Young Park
EGEun-Byul Go
Eun-Byul Go
Seong-Hoon KimSeong-Hoon Kim
Seong-Hoon Kim
The cowpea is one of the most important legume species globally, with both the grains and fresh pods widely consumed for the rich nutritional content. In the Republic of Korea, the cultivation and breeding progress of cowpeas is relatively low but gradually receiving interest due to its potential contribution to nutrition and sustainable agriculture. Given the changing pattern of global climatic conditions, any effort in cowpea breeding in Korea may focus on important traits such as improving yield, stress resistance, and adaptability to local climate. This review provides a discussion on the current status of the cultivation and breeding of cowpeas in the Republic of Korea, with the aim of improving crop performance, agricultural sustainability, and food security.

11 October 2024 in Molecules
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KOKingsley Ochar
Kingsley Ochar
KIKANIVALAN IWAR
KANIVALAN IWAR
DNDivya V Nair
Divya V Nair
YCYun-Jo Chung
Yun-Jo Chung
Bo-Keun HaBo-Keun Ha
Bo-Keun Ha
Seong-Hoon KimSeong-Hoon Kim
Seong-Hoon Kim
A cytokine storm is an intense inflammatory response characterized by the overproduction of proinflammatory cytokines, resulting in tissue damage, and organ dysfunction. Cytokines play a crucial role in various conditions, such as coronavirus disease, in which the immune system becomes overactive and releases excessive levels of cytokines, including interleukins, tumor necrosis factor-alpha (TNF-α), and interferon-gamma (IFN-γ). This anomalous response often leads to acute respiratory distress syndrome (ARDS), disseminated intravascular coagulation (DIC), and multiple organ injury (MOI). Glucosinolates are plant secondary metabolites predominantly found in Brassica vegetables, but are also present in other species, such as Moringa Adens and Carica papaya L. When catalyzed by the enzyme myrosinase, glucosinolates produce valuable products, including sulforaphane, phenethyl isothiocyanate, 6-(methylsulfinyl) hexyl isothiocyanate, erucin, goitrin, and moringin. These hydrolyzed products regulate proinflammatory cytokine production by inhibiting the nuclear factor kappa-light-chain-enhancer of activated B-cell (NF-κB) signaling pathway and stimulating the nuclear factor erythroid 2-related factor 2 (Nrf2) signaling pathway. This action can alleviate hyperinflammation in infected cells and modulate cytokine storms. In this review, we aimed to examine the potential role of glucosinolates in modulating cytokine storms and reducing inflammation in various conditions, such as coronavirus disease. Overall, we found that glucosinolates and their hydrolysis products can potentially attenuate cytokine production and the onset of cytokine storms in diseased cells. In summary, glucosinolates could be beneficial in regulating cytokine production and preventing complications related to cytokine storms.

6 June 2024 in Plants
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WKWOON JI KIM
WOON JI KIM
BYBaul Yang
Baul Yang
DKDong-Gun Kim
Dong-Gun Kim
SKSang Hoon Kim
Sang Hoon Kim
YLYe-Jin Lee
Ye-Jin Lee
JRJaihyunk Ryu
Jaihyunk Ryu
Rapeseed (Brassica napus L.) holds significant commercial value as one of the leading oil crops, with its agronomic features and oil quality being crucial determinants. In this investigation, 73,226 single nucleotide polymorphisms (SNPs) across 95 rapeseed mutant lines induced by gamma rays, alongside the original cultivar (‘Tamra’), using genotyping-by-sequencing (GBS) analysis were examined. This study encompassed gene ontology (GO) analysis and a genomewide association study (GWAS), thereby concentrating on agronomic traits (e.g., plant height, ear length, thousand-seed weight, and seed yield) and oil traits (including fatty acid composition and crude fat content). The GO analysis unveiled a multitude of genes with SNP variations associated with cellular processes, intracellular anatomical structures, and organic cyclic compound binding. Through GWAS, we detected 320 significant SNPs linked to both agronomic (104 SNPs) and oil traits (216 SNPs). Notably, two novel candidate genes, Bna.A05p02350D (SFGH) and Bna.C02p22490D (MDN1), are implicated in thousand-seed weight regulation. Additionally, Bna.C03p14350D (EXO70) and Bna.A09p05630D (PI4Kα1) emerged as novel candidate genes associated with erucic acid and crude fat content, respectively. These findings carry implications for identifying superior genotypes for the development of new cultivars. Association studies offer a cost-effective means of screening mutants and selecting elite rapeseed breeding lines, thereby enhancing the commercial viability of this pivotal oil crop.