• Title/Summary/Keyword: peroxidase isozyme

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Overproduction of Lignin Peroxidase from Phanerochaete chrysosporium PSBL-1 (Phanerochaete chrysosporium PSBL-1의 배양조건 최적화를 통한 Lignin Peroxidase의 과량생산)

  • 정병철;한윤전;장승욱;정욱진;원유정
    • Korean Journal of Microbiology
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    • v.36 no.3
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    • pp.228-235
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    • 2000
  • Until now, it was diIliculi to overproduce lignin peroxidase(LiP) fiom Pl~anemchaete ch~ysosporium since the lack of optimized growth conditions. In this paper, we optimized the LIP production conditions and monitored LIP isozyines of fl chqsospoi.ium PSBL-1. The optimized condition includes sponge matrix support, no addition of $MnSO_4$, excess addition of niixogen source(48 inM diarmnonium), and addition of stabilizer(2 mM verakyl alcohol). Finally we obtained Lip activity of 1,800 unitsll. HI isozyne was overproduced when inyceliuin was cultivated in media containing $Mn^{2+}$ (2.73 inM) and excess nitrogen(48 11d4 diannnonium). Three azo dyes(acid yellow 9, congo ued, orange IT; each concenimtion of50 $\mu$M) we1-e rapidly decolorized within 2 inins by 0.4 un~t or Lip.

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Studies on the Physiological Chemistry of the Spring Growth Habits in Naked Barley V. Changes in the Isozyme Patterns and Activities of Peroxidase During the Differentiation (과맥의 파성에 대한 생리화학적 연구 V. 유수의 분화, 발육과정중 Peroxidase의 활성 및 Isozyme Pattern)

  • 최선영;이강수;박기훈
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.31 no.3
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    • pp.375-382
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    • 1986
  • This study was carried out to obtain the basic information for the clarification of spring growth habits mechanism of naked barleys. The isozyme patterns and activities of peroxidase in the young spike and leaf blade were analyzed during the differentiation and development of young spike. The characteristic differences between the normal and rosetted type were in c and g isozymes in young spike, and in i isozyme in the leaf blade. In the normal type, c and i isozymes disappeared at the stage of spi-kelet differentiation, g isozyme at the stage of flolet differentiation. But, in the rosetted type, those three isozymes remained in dark stained condition until the time of final sampling. Especially, those three isozymes were higher in the rosetted type than those in the normal type even at the stage of bract differentiation(BDS), just prior to the reproductive stage. The activities of peroxidase decreased slowly after BDS in the young spike and leaf blade in the normal type, While, in the rosetted type, increased linearly, and the degree of increasing was remarkable in the young spike. It was interesting that the degree of activities in young spike was higher in the rosetted type than that in the normal type even at BDS. From the above results, the remarkable differences of the isozyme patterns and activities at BDS between the normal and rosetted type were considered to be the physiological expression of the varieties concerned with the degree of spring growth habits.

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Changes of Peroxidsse Isozyme Pattern and Formation of Cell Wall of Hairy Root Irlduced by Agrohacterium rhisogenes from Potato Tuber (감자(Solanum tuberosum. L) 괴경에 있어서 Agrobacterium rhizogenes에 의해 형질전환된 조직세포의 세포벽 형성과 peroxidase isozyme 양상의 변화)

  • 정현숙;김영희
    • KSBB Journal
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    • v.6 no.1
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    • pp.27-33
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    • 1991
  • Hairy root induced by A. rhizogenes from potato tuber (Solanm tuberosum L.) synthesized the agropine and mannopine which were demonstrated with paper electrophoresis. And the starch contents in hairy root were increased gradually following the developmental stage. But protein contents were decreased. The activity of ${\beta}-glucan$ synthetase II(GSII) which is related to the cell wall biosynthesis was stimulated in hairy root on the developmental stage. And chloropromazine did not influence the activity of GS II while verapamil inhibited about 60% of the activity GS II. Therefore, these results showed $Ca^{2+}$ to be effective factor in the cell wall formation. Isozyme pattern of peroxidase was investigated in the callus and hairy root induced from potato tuber.

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The Changes of Peroxidase Activity and Isoperoxidase Patterns from Pine Needles under the Salinary Stress (염분스트레스에 의한 소나무잎 Peroxidase의 활성 및 Isozyme Pattern의 변화)

  • 이미영
    • The Korean Journal of Ecology
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    • v.20 no.5
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    • pp.315-321
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    • 1997
  • Peroxidase activities and isozyme patte군 of the pine needles (Pinus densiflora) were examined and compared in the coastal regions of Anmyum-Do(Choongnam, Taean-Gun) and inland regions of Shinchang-Myun(Choongnam, Asan-City). The pine needle peroxidase from Anmyum-Do showed approximately three times higher specfic activity than Shinchang pine needle peroxidase. The pine needle extracts of Anmyun-Do and Shinchang contained three anionic isoperoxidases, named A1, A2 and A3, when subjected to starch gel electrophoresis at pH 7.0. Cjationic isoperoxidases could not be found in both extracts., However, there existed unique isoperoxidase An only from the extracts of Anmyun-Do pine needles under the salinary environment. Moreover, the specific activities of catalase and glucose-6-phosphate dehydrogenase from Anmyun-Do, known for the inducible enzymes under the stress condition, were about 1.8 times higher than those of Shinchang pine needles. However, the specific activities of other enzymes did not show great differences between the two regions. Considering the above results of the higher specific activity of peroxidase and the unique expression of isoperoxidase An, pine needle peroxidase might involve in the defence mechanism against the salinary stress of Anmyun-Do.

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Electrophoresis Techniques for Identification of Callus Induced from Pinella ternata (Thunb.) Breit 1. Analysis of protein and Enzymes of Callus Induced from Pinella ternata (Thunb.) Breit (기내 배양된 반하의 전기영동에 의한 생약학적 연구 1. 전기영동법에 의한 반하 Callus의 단백질 및 효소분석)

  • Choi, Jung-Sik;Ryu, Jeom-Ho;Park, Hak-Bong;Kim, Hyung-Moo
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.33 no.2
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    • pp.122-125
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    • 1988
  • A comparative electrophoretic study on protein and several important enzymes of calli induced from stem, intercostal area and minor vein area were conducted in Pinella ternata (Thunb.) Breit. Soluble protein band patterns of calli induced from stem, intercostal area and minor vein area were distinctly different from those of the corresponding plant parts. Esterase isozyme patterns of calli induced from stem, intercostal area and minor vein area were different from those of the corresponding plant parts. Glutamate oxalo-acetate transaminase isozyme patterns of calli grown for 4 weeks induced from 3 plant parts were similar to those of the corresponding plant parts. But a high molecular weight isozyme band appeared in the calli grown for 8 weeks. Alow molecular weight isozyme band disappeared on the peroxidase isozyme patterns of calli grown for 4 weeks appeared on those of the corresponding plant parts.

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Effects of Pinus rigida Allelochemicals on Isozyme Activities during Seed Germination of Cassia mimosoides var.nomame (Pinus rigida Allelochemicals가 차풀종자의 발아과정에서 동위효소의 활성에 미치는 영향)

  • 김용옥;이호준;장남기
    • The Korean Journal of Ecology
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    • v.20 no.2
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    • pp.103-109
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    • 1997
  • Eleven phenolic compounds including caffeic acid were identified through analyzing the aqueous extracts of Pinus rigida by HPLC. Among them, protocatechuic acid was the maximum amount of 6.84 ppm. Seed germination of Cassia mimosoides var. nomame was significantly stimulated by the extract of P. rigida leaves in the proportion ot concentration. However, root growth was elevalted at a threshold concentration below 25%, but it was inhibited at high concentrations. In 50% extract of P. rigida, upward root tip of C. mimosoides var. nomame showed negageotropism which the root end showed necrosis. New isozyme bands were induced indicating concentration activity of peroxidase from the extract of C. mimosoides var. nomame, especially in the cathodic region. Although it reduced the mumber of isozyme bands of esterase, esterase activities were stimulated in the anodic region of C. mimosoides var. nomame. The activity of amylase was not remarkably different between control and treatment.

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Alterations of Glutathione Peroxidase Patterns by Stressor Treatment in Rice Seedling Roots (스트레스 물질에 의한 벼 glutathione peroxidase 활성패턴 변화)

  • Kim, Yoon-Kyoung;Lee, Mi-Young
    • Applied Biological Chemistry
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    • v.48 no.1
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    • pp.53-59
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    • 2005
  • The effect of various stressors such as reductant ascorbic acid, signalling molecules (salicylic acid and methyl jasmonic acid), heavy metals $(NiCl_2,\;and\;MnSO_4)$ and NaCl on the glutathione peroxidase (GPX) activities and isoenzyme expression patterns were investigated in rice seedling roots. Total GPX activity increased according to the increase of ascorbic acid concentration. Prominent enhancement of GPX1 isozyme due to ascorbic acid contributed to the increase of total GPX activity. GPX showed different reactivity toward salicylic acid and methyl jasmonic acid. GPX activity increased at 0.1 mM salicylic acid, and then decreased thereafter. However, GPX increased gradually in a methyl jasmonic acid concentration-dependent manner, and 3 fold increase of GPX activity was found at 1 mM methyl jasmonic acid. Moreover, GPX1 isozyme increased according to the increase of salicylic acid, while GPX1 isozyme decreased according to the increase of methyl jasmonic acid. When metal ions were treated, GPX activity increased considerably according to the increase of $NiCl_2$ concentration, however, GPX activity increased about 2 fold at 0.5 mM $CuSO_4$ and then decreased. Enhancement of GPX1 isozyme contributed to the increase of total GPX activities in $NiCl_2-treated$ and $MnSO_4-treated$ rice seedlings. Total GPX activity increased 1.7 fold in response to 300 mM NaCl. Especially GPX2 isozyme showed gradual increase according to the increase of NaCl concentration.

Plant Regeneration of Geranium (Pelargonium graveolense) Callus and Changes of Peroxidase Isozyme Pattern (제라늄(Pelargonium graveolense) 캘러스의 재분화 및 peroxidase isozyme 발현패턴 변화)

  • Lee, Seok-Hyun;Lee, Mi-Young
    • Applied Biological Chemistry
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    • v.43 no.3
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    • pp.184-189
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    • 2000
  • Callus was induced from the petioles of scented-geranium (Pelargonium graveolense) in MS medium containing various concentrations of plant growth regulators. The highest frequency of more than 70% of callus was induced in 2 mg/l NAA and 0.5 mg/l BAP or 2 mg/l 2,4-D and 0.5 mg/l BAP combined treatment, while not in 2,4-D, NAA or BAP alone. When the callus was transferred to the MS medium containing 0.05 mg/l NAA and 0.5 mg/l BAP, were highest intensity of shoot formation, 14 shoots/callus, was induced after 5 weeks. The highest rooting was observed on hormone-free rooting media from the regenerated shoots after 3 weeks, indicating that the regeneration from geranium callus might be possible by changing the hormone ratios. Peroxidase (POD) specific activities in callus induced from 2 mg/l NAA and 0.5 mg/l BAP were higher than those of 2 mg/l 2,4-D and 0.5 mg/l BAP callus during the entire culture periods. POD isozyme C3 was the main cathodic POD isozyme expressed in NAA and BAP callus, while C1 was the main in 2,4-D and BAP callus. However, anodic POD isozymes, A1, A2 and A3 were expressed with similar activities in both hormone combinations.

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Effect of $GA_3$ and ABA on Peroxidase and Catalase Activities and Isoperoxidase Patterns in Mung Bean Seedling (녹두의 발아과정 중 $GA_3$ 및 ABA의 처리가 Peroxidase, Catalase 활성변화와 Isoperoxidase Pattern에 미치는 영향)

  • Lee, Sang-Kap;Park, Woo-Churl
    • Applied Biological Chemistry
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    • v.31 no.2
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    • pp.205-210
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    • 1988
  • The changes in peroxidase and catalase activities, and isoperoxidase patterns in different parts of mung bean seedling caused by the treatment with plant growth substances, $GA_3$ and ABA, were examined. As germination proceeded, the activity of peroxidase in all part except hypocotyl was increased, while that of catalase decreased. The separate application of $GA_3$ and ABA increased the activity of peroxidase which was more influenced by $GA_3$ than by ABA only in cotyledon, while that of catalase was more affected by ABA than by $GA_3$. Electrophoretic study revealed that the number of isoperoxidase was increased continuously in all parts during development. A greater influence was exerted on the intensity of isozyme than the number of isozyme by the hormonal treatment.

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Differentiation of Lentinus edodes Isolates in Korea by Isozyme Polymorphisms and Random Amplified Polymorphic DNA (RAPD) Analysis (Isozyme Polymorphism 및 Random Amplified Polymorphic DNA(RAPD) Pattern에 의한 표고 버섯 품종간 비교)

  • Park, Won-Mok;Ko, Han-Gyu;Park, Ro-Jo;Hong, Ki-Sung;Kim, Gyu-Hyun
    • The Korean Journal of Mycology
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    • v.25 no.3 s.82
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    • pp.176-190
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    • 1997
  • Sixty-three isolates of Lentinus edodes obtained from Korea were used to assess the genetic similarity by isozyme polymorphisms and random amplified polymorphic DNA patterns. The activities of esterase, peroxidase and acid phosphatase displayed 10, 7 and 3 distinct isozyme patterns, respectively. By combining the isozyme patterns obtained with the 3 enzymes, every isolate showed its own distinct electrophoretic phenotypes. A distance matrix calculated between all pairs of 63 electrophoretic phenotypes based on the presence or abscence of isozyme bands were analyzed by the group-average method. Results of the cluster analysis assinged the 63 phenotypes into six major groups. In the analysis of random amplified polymorphic DNA patterns, all isolates of Lentinus edodes were devided into five RAPD groups.

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