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Subramanian Parthiban,Kim Jeong-Seon,Heo Jun,Kim Yiseul 한국미생물·생명공학회 2023 한국미생물·생명공학회지 Vol.51 No.4
We report the draft genome sequence of the yeast strain Hormonema macrosporum POB-4, capable of producing the biosurfactant glycocholic acid, one of the bile acids. A majority of genes with known function were associated with metabolism and transport of amino acid and carbohydrate as well as secondary metabolites biosynthesis, transport, and catabolism. We observed genes of eleven C-N hydrolases and two CoA transferases which have been reported to be involved in the biosynthesis of glycocholic acid. Further experimental studies can help to elucidate the specific genes responsible for biosurfactant production in strain POB-4.
Subramanian Parthiban,Kim Jeong-Seon,Heo Jun,Kim Yiseul 한국미생물·생명공학회 2023 한국미생물·생명공학회지 Vol.51 No.4
We report the draft genome sequence of Sporobolomyces phaffii RJAF-17, a basidiomycetous yeast strain producing lipoamino acid surfactants, N-palmitoyl leucine and N-parmitoleyl glutamine. The annotation and classification of protein-coding genes provided the basic information for the genome of strain RJAF-17, including prediction of abundant genes as well as detection of genes involved in the biosynthesis of lipoamino acids. With the molecular importance of lipoamino acids as promising alternatives to chemical surfactants, the genomic information of strain RJAF-17 can help us understand the role of biomolecules in yeasts and explore possibilities of large-scale synthesis for industrial applications.
Parthiban Subramanian,고호철,김성훈,이재은,황예진,김빛샘,이윤정,Awraris Derbie Assefa,허온숙,노나영,성정숙,이주희,이호선,한범수 한국환경생물학회 2022 환경생물 : 환경생물학회지 Vol.40 No.4
Bacterial phytopathogen Pectobacterium causes soft rot disease in several vegetable crops globally, resulting in heavy agricultural losses at both the pre and post-harvest stages. The present work was carried out to screen Kimchi cabbage genetic resources conserved at the National Agrobiodiversity Center, Rural Development Administration, Korea, for resistance against the soft rot pathogen Pectobacterium carotovorum subsp. carotovorum KACC 21701 over a period of three years (from 2020 to 2022). Infection of the phytopathogen was carried out at four-leaf stage and for each accession, twenty-five plants per germplasm were infected with KACC 21701. Kimchi cabbage cultivars Wangmatbaechu, Seoulbaechu, and CR Kiyoshi were used as control. Seven-days post-infection, the Disease Index (DI) values were manually recorded from zero to four, zero matched perfectly heathy plants and four completely dead plants. The 682 accessions of Kimchi cabbage exhibited varying degrees of disease resistance to KACC 21701 and thirty accessions, exhibiting a DI≤2, were considered for replication studies. During the replication studies, four landrace germplasms (IT102883, IT120036, IT120044, and IT120048) and one cultivar (IT187919) were confirmed to be moderately susceptible to KACC 21701. Results of the preliminary screening as well as replication studies were documented for the all the 682 germplasms. Addition of such information to the passport data of stored germplasms might serve as potential bio-resource for future breeders and researchers to develop resistant varieties or study the mechanisms involved in resistance of plants to such phytopathogen.
Parthiban Subramanian,Manoharan Melvin Joe,임우종,홍보희,Sherlyn C. Tipayno,Venkatakrishnan Sivaraj Saravanan,유재홍,정종배,Tahera Sultana,사동민 한국토양비료학회 2011 한국토양비료학회지 Vol.44 No.4
Cold-adapted bacteria survive in extremely cold temperature conditions and exhibit various mechanisms of adaptation to sustain their regular metabolic functions. These adaptations include several physiological and metabolic changes that assist growth in a myriad of ways. Successfully sensing of the drop in temperature in these bacteria is followed by responses which include changes in the outer cell membrane to changes in the central nucleoid of the cell. Their survival is facilitated through many ways such as synthesis of cryoprotectants,cold acclimation proteins, cold shock proteins, RNA degradosomes, Antifreeze proteins and ice nucleators. Agricultural productivity in cereals and legumes under low temperature is influenced by several cold adopted bacteria including Pseudomonas, Acinetobacter, Burkholderia, Exiguobacterium, Pantoea, Rahnella,Rhodococcus and Serratia. They use plant growth promotion mechanisms including production of IAA,HCN, and ACC deaminase, phosphate solublization and biocontrol against plant pathogens such as Alternaria, Fusarium, Sclerotium, Rhizoctonia and Pythium.
Subramanian, Parthiban,Joe, Manoharan Melvin,Yim, Woo-Jong,Hong, Bo-Hui,Tipayno, Sherlyn C.,Saravanan, Venkatakrishnan Sivaraj,Yoo, Jae-Hong,Chung, Jong-Bae,Sultana, Tahera,Sa, Tong-Min Korean Society of Soil Science and Fertilizer 2011 한국토양비료학회지 Vol.44 No.4
Cold-adapted bacteria survive in extremely cold temperature conditions and exhibit various mechanisms of adaptation to sustain their regular metabolic functions. These adaptations include several physiological and metabolic changes that assist growth in a myriad of ways. Successfully sensing of the drop in temperature in these bacteria is followed by responses which include changes in the outer cell membrane to changes in the central nucleoid of the cell. Their survival is facilitated through many ways such as synthesis of cryoprotectants, cold acclimation proteins, cold shock proteins, RNA degradosomes, Antifreeze proteins and ice nucleators. Agricultural productivity in cereals and legumes under low temperature is influenced by several cold adopted bacteria including Pseudomonas, Acinetobacter, Burkholderia, Exiguobacterium, Pantoea, Rahnella, Rhodococcus and Serratia. They use plant growth promotion mechanisms including production of IAA, HCN, and ACC deaminase, phosphate solublization and biocontrol against plant pathogens such as Alternaria, Fusarium, Sclerotium, Rhizoctonia and Pythium.
Stage-Wise Identification and Analysis of miRNA from Root-Knot Nematode <i>Meloidogyne incognita</i>
Subramanian, Parthiban,Choi, In-Chan,Mani, Vimalraj,Park, Junhyung,Subramaniyam, Sathiyamoorthy,Choi, Kang-Hyun,Sim, Joon-Soo,Lee, Chang-Muk,Koo, Ja Choon,Hahn, Bum-Soo MDPI AG 2016 INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES Vol.17 No.10
<P>In this study, we investigated global changes in miRNAs of <I>Meloidogyne incognita</I> throughout its life cycle. Small RNA sequencing resulted in approximately 62, 38, 38, 35, and 39 Mb reads in the egg, J2, J3, J4, and female stages, respectively. Overall, we identified 2724 known and 383 novel miRNAs (read count > 10) from all stages, of which 169 known and 13 novel miRNA were common to all the five stages. Among the stage-specific miRNAs, miR-286 was highly expressed in eggs, miR-2401 in J2, miR-8 and miR-187 in J3, miR-6736 in J4, and miR-17 in the female stages. These miRNAs are reported to be involved in embryo and neural development, muscular function, and control of apoptosis. Cluster analysis indicated the presence of 91 miRNA clusters, of which 36 clusters were novel and identified in this study. Comparison of miRNA families with other nematodes showed 17 families to be commonly absent in animal parasitic nematodes and <I>M. incognita</I>. Validation of 43 predicted common and stage-specific miRNA by quantitative PCR (qPCR) indicated their expression in the nematode. Stage-wise exploration of <I>M. incognita</I> miRNAs has not been carried out before and this work presents information on common and stage-specific miRNAs of the root-knot nematode.</P>
Subramanian, Parthiban,Oh, Byung-Ju,Mani, Vimalraj,Lee, Jae Kook,Lee, Chang-Muk,Sim, Joon-Soo,Koo, Ja Choon,Hahn, Bum-Soo MDPI AG 2017 INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES Vol.18 No.7
<P><I>Meloidogyne incognita</I> is a common root-knot nematode with a wide range of plant hosts. We aimed to study the metabolites produced at each stage of the nematode life cycle to understand its development. Metabolites of <I>Meloidogyne incognita</I> were extracted at egg, J2, J3, J4, and female stages and 110 metabolites with available standards were quantified using CE-TOF/MS. Analyses indicated abundance of stage-specific metabolites with the exception of J3 and J4 stages which shared similar metabolic profiles. The egg stage showed increased abundance in glycolysis and energy metabolism related metabolites while the J2 metabolites are associated with tissue formation, motility, and neurotransmission. The J3 and J4 stages indicated amino acid metabolism and urea cycle- related metabolites. The female stage was characterized with polyamine synthesis, antioxidant activity, and synthesis of reproduction related metabolites. Such metabolic profiling helps us understand the dynamic physiological changes related to each developmental stage of the root-knot nematode life cycle.</P>