본문 바로가기
HOME> 저널/프로시딩 > 저널/프로시딩 검색상세

저널/프로시딩 상세정보

권호별목차 / 소장처보기

H : 소장처정보

T : 목차정보

Journal of plant biology = 식물학회지 16건

  1. [국내논문]   Brassinosteroid Biosynthesis and dwarf Mutants   피인용횟수: 5

    Kwon Mi (Department of Biological Science, College of Natural Sciences NS70, Seoul National University ) , Choe Sunghwa (Department of Biological Science, College of Natural Sciences NS70, Seoul National University)
    Journal of plant biology = 식물학회지 v.48 no.1 ,pp. 1 - 15 , 2005 , 1226-9239 ,

    초록

    Plants enjoy their entire life exactly where they were initially rooted. Because of this fixed life pattern, plants have to devise a different type of strategy than animals to survive the numerous biotic and abiotic challenges. Many different plant hormones that act alone or in concert underpin these mechanisms. Brassinosteroids (BRs) collectively refer to plant-originated $5\alpha-cholestane$ steroids that elicit growth stimulation in nano-or micromolar concentrations. BRs that are biosynthesized using sterols as precursors are structurally similar to the cholesterol derived, mammalian steroid hormones, insect molting hormones and ecdysteroids. BRs have been known for decades to be effective in plant growth promotion. However, definitive evidence for their roles in growth and development remained unclear until the recent characterization of BR dwarf mutants isolated from Arabidopsis and other plants. This review aims to provide a cohesive summary of information obtained from the molecular genetic characterization of mutants that are defective in sterol and BR biosynthetic pathways.

    원문보기

    원문보기
    무료다운로드 유료다운로드

    회원님의 원문열람 권한에 따라 열람이 불가능 할 수 있으며 권한이 없는 경우 해당 사이트의 정책에 따라 회원가입 및 유료구매가 필요할 수 있습니다.이동하는 사이트에서의 모든 정보이용은 NDSL과 무관합니다.

    NDSL에서는 해당 원문을 복사서비스하고 있습니다. 아래의 원문복사신청 또는 장바구니담기를 통하여 원문복사서비스 이용이 가능합니다.

    이미지

    Fig. 1 이미지
  2. [국내논문]   cDNA Cloning and Expression Analysis of a CTP:Phosphoethanolamine Cytidylyltransferase from Barley   피인용횟수: 1

    Lee Sung Jin (Department of Biological Sciences and Institute of Molecular Cell Biology, Inha University ) , Kim Tae Hyun (Department of Biological Sciences and Institute of Molecular Cell Biology, Inha University ) , Cho Sung Ho (Department of Biological Sciences and Institute of Molecular Cell Biology, Inha University)
    Journal of plant biology = 식물학회지 v.48 no.1 ,pp. 16 - 24 , 2005 , 1226-9239 ,

    초록

    To elucidate the relationship between the structure and function of CTP:phosphoethanolamine cytidylyltransferases (ECf, EC 2.7.7.14) in plants, we cloned and characterized the cDNA of an ECT from Hordeum vulgare. This HvECT1 cDNA is 1783 bp long, and includes an open reading frame (ORF) of 1263 b that encodes a protein of 421 amino acids. The predicted protein sequence of HvECT1 is $73\%$ identical to and $84\%$ similar with Arabidopsis thaliana AtECT1; it also shares 57, 55, and $37\%$ similarities with human, rat, and yeast ECTs, respectively. Its 252-b 5'-noncoding leader contains a putative upstream ORF of 36 nucleotides, possibly encoding a putative peptide enriched in Ala and Pro residues. Alignment of the N-terminal and C-terminal halves of HvECT1 revealed a large internal repetitive sequence. Both halves contain the HXGH motif known to be involved in the catalytic activity of cytidylyltransferases. The RTXGVSTT sequence and Asp residues are also conserved. Our hydropathy profile showed that HvECT1 contains a signal sequence that is absent in yeast or animal ECTs. Results from reverse transcriptase-PCR indicated that HvECT1 is expressed highly in the leaves, stems, and roots of one-week-old plants; its expression is not regulated by low temperatures. After transforming a yeast mutant ect1 and labeling those transformants with radioactive ethanolamine, we identified HvECT1 cDNA through in vivo analyses of the enzymatic reaction products.

    원문보기

    원문보기
    무료다운로드 유료다운로드

    회원님의 원문열람 권한에 따라 열람이 불가능 할 수 있으며 권한이 없는 경우 해당 사이트의 정책에 따라 회원가입 및 유료구매가 필요할 수 있습니다.이동하는 사이트에서의 모든 정보이용은 NDSL과 무관합니다.

    NDSL에서는 해당 원문을 복사서비스하고 있습니다. 아래의 원문복사신청 또는 장바구니담기를 통하여 원문복사서비스 이용이 가능합니다.

    이미지

    Fig. 1 이미지
  3. [국내논문]   Comparison of Cytotoxic Activities between in Vitro and Field Grown Plants of Typhonium flagelliforme (Lodd.) Blume  

    Chan Lai Keng (School of Biological Sciences, Universiti Sains Malaysia ) , Koh Wan Yee (School of Biological Sciences, Universiti Sains Malaysia ) , Tengku-Muhammad Tengku S. (School of Biological Sciences, Universiti Sains Malaysia)
    Journal of plant biology = 식물학회지 v.48 no.1 ,pp. 25 - 31 , 2005 , 1226-9239 ,

    초록

    An in vitro cytotoxicity screening of the Typhonium flagelliforme extracts indicated high cytotoxicity effect on human lung carcinoma NCI-H23 cells and human mammary gland carcinoma T-47D cells, but the extracts were not active on human liver carcinoma HepG2 cells. NCI-H23 cells were more susceptible to T. flagelliforme extracts than T-47D cells. $EO_{50}$ values of the hexane fractions of the mature plant and the in vitro plantlet of T. flagelliforme on NCI-H23 cells were less than $2{\mu}g/mL$ . Extract from the mature plant was relatively more cytotoxic than the one from in vitro plantlet except for the hexane fraction. The chloroform and butanol fraction of the mature plant had higher cytotoxicity effect than the fraction from in vitro plantlet on NCI-H23 cells. All the 3 fractions (hexane, chloroform, and butanol) of the mature plant exhibited higher cytotoxicity effects on human mammary gland carcinoma T-47D cells than the 3 fractions of in vitro plantlet. However, the human liver carcinoma cells were resistant to T. flagelliforme extracts except for higher concentration of hexane fractions of both the mature and the in vitro plants and the chloroform fraction of the mature plant. Micropropagated plantlets of T. flagelliforme could hence be used as herbal materials for the treatment of human lung and breast cancers.

    원문보기

    원문보기
    무료다운로드 유료다운로드

    회원님의 원문열람 권한에 따라 열람이 불가능 할 수 있으며 권한이 없는 경우 해당 사이트의 정책에 따라 회원가입 및 유료구매가 필요할 수 있습니다.이동하는 사이트에서의 모든 정보이용은 NDSL과 무관합니다.

    NDSL에서는 해당 원문을 복사서비스하고 있습니다. 아래의 원문복사신청 또는 장바구니담기를 통하여 원문복사서비스 이용이 가능합니다.

    이미지

    Fig. 1 이미지
  4. [국내논문]   Phytochelatin Is Not a Primary Factor in Determining Copper Tolerance   피인용횟수: 7

    Lee Sangman (Department of Agricultural Chemistry, Division of Applied Biology and Chemistry ) , Kang Beom Sik (School of Life Science and Biotechnology, College of Natural Sciences, Kyungpook National University)
    Journal of plant biology = 식물학회지 v.48 no.1 ,pp. 32 - 38 , 2005 , 1226-9239 ,

    초록

    Phytochelatin (PC) is involved in the detoxification of harmful, non-essential heavy metals and the homeostasis of essential heavy metals in plants. Its synthesis can be induced by either cadmium (Cd) or copper (Cu), and can form stable complexes with either element. This might suggest that PC has an important role in determining plant tolerance to both. However, this is not clearly apparent, as evidenced by a PC-deficient and Cd-sensitive Arabidopsis mutant (cad1-3) that shows no significant increase in its sensitivity to copper. Therefore, we investigated whether the mechanism for Cu tolerance differed from that for Cd by analyzing copper sensitivity in Cd-tolerant transgenics and Cd-sensitive mutants of Arabidopsis. Cadmium-tolerant transgenic plants that over-expressed A. thaliana phytochelatin synthase 1 (AtPCS1) were not tolerant of copper stress, thereby supporting the hypothesis that PC is not primarily involved in this tolerance mechanism. We also investigated Cu tolerance in cad2-1, a Cd-sensitive and glutathione (GSH)-deficient Arabidopsis mutant. Paradoxically, cad2-1 was more resistant to copper stress than were wild-type plants. This was likely due to the high level of cysteine present in that mutant. However, when the growth medium was supplemented with cysteine, the wild types also exhibited copper tolerance. Moreover, Saccharomyces cerevisiae that expressed AlPCSI showed tolerance to Cd but hypersensitivity to Cu. All these results indicate that PC is not a major factor in determining copper tolerance in plants.

    원문보기

    원문보기
    무료다운로드 유료다운로드

    회원님의 원문열람 권한에 따라 열람이 불가능 할 수 있으며 권한이 없는 경우 해당 사이트의 정책에 따라 회원가입 및 유료구매가 필요할 수 있습니다.이동하는 사이트에서의 모든 정보이용은 NDSL과 무관합니다.

    NDSL에서는 해당 원문을 복사서비스하고 있습니다. 아래의 원문복사신청 또는 장바구니담기를 통하여 원문복사서비스 이용이 가능합니다.

    이미지

    Fig. 1 이미지
  5. [국내논문]   Constitutive Expression of Two Endochitinases from Root Nodules of Elaeagnus umbellata Confers Resistance on Transgenic Arabidopsis Plants against the Fungal Pathogen Botrytis cinerea   피인용횟수: 1

    Kim Yaw Joo (Department of Biological Sciences, Seoul National University ) , Kim Ho Bang (Department of Biological Sciences, Seoul National University ) , Baek Eun Hye (Department of Biological Sciences, Seoul National University ) , Heu Sunggi (Plant Pathology Division, National Institute of Agricultural Science and Technology, RDA ) , An Chung Sun (Department of Biological Sciences, Seoul National University)
    Journal of plant biology = 식물학회지 v.48 no.1 ,pp. 39 - 46 , 2005 , 1226-9239 ,

    초록

    Plant chitinases have been known as pathogenesis-related (PR) proteins, but recent studies suggest that they play functional roles during normal plant growth and development. We previously isolated two cDNA clones encoding endochitinases, EuNOD-CHT1 and -CHT2, from the root nodules of Elaeagnus umbellata. These genes show differential expression patterns, with the EuNOD-CHT1 gene being active in the root nodules and meristems, while EuNOD­CHT2 is preferentially expressed in the infected cells of those nodules. To elucidate the functional roles of these two endochitinases, we have now constitutively expressed each gene in a heterologous plant system, Arabidopsis thaliana. Stable inheritance and expression of the transgenes were confirmed by genomic Southern hybridization and RT-PCR. Our transgenic plants did not differ morphologically from the wild types. However, constitutive expression of EuNOD-CHT1 and -CHT2 in Arabidopsis resulted in increased resistance against a fungal pathogen, Botrytis cinerea, but not against a bacterial agent, Pseudomonas syringae pv. Tomato DC3000. Expression levels were enhanced by both wounding and jasmonic acid treatments (for EuNOD-CHT1), or by jasmonic acid only (for EuNOD-CHT2). These data suggest that EuNOD-CHTl and -CHT2 primarily play defensive roles during root nodule development in E. umbellata.

    원문보기

    원문보기
    무료다운로드 유료다운로드

    회원님의 원문열람 권한에 따라 열람이 불가능 할 수 있으며 권한이 없는 경우 해당 사이트의 정책에 따라 회원가입 및 유료구매가 필요할 수 있습니다.이동하는 사이트에서의 모든 정보이용은 NDSL과 무관합니다.

    NDSL에서는 해당 원문을 복사서비스하고 있습니다. 아래의 원문복사신청 또는 장바구니담기를 통하여 원문복사서비스 이용이 가능합니다.

    이미지

    Fig. 1 이미지
  6. [국내논문]   Effects of in Planta Gamma-Irradiation on Growth, Photosynthesis, and Antioxidative Capacity of Red Pepper (Capsicum annuum L.) Plants   피인용횟수: 7

    Kim Jin-Hong (Division of Radiation Application Research, Korea Atomic Energy Research Institute ) , Chung Byung Yeoup (Division of Radiation Application Research, Korea Atomic Energy Research Institute ) , Kim Jae-Sung (Division of Radiation Application Research, Korea Atomic Energy Research Institute ) , Wi Seung Gon (Division of Radiation Application Research, Korea Atomic Energy Research Institute)
    Journal of plant biology = 식물학회지 v.48 no.1 ,pp. 47 - 56 , 2005 , 1226-9239 ,

    초록

    We investigated the effects of low-dose in planta irradiation on red pepper plants treated with gamma rays of 2, 4, 8, and 16 Gy. Growth was stimulated at 2 and 4 Gy but inhibited at 8 and 16 Gy. Photochemical quenching (qP) increased slightly in all treatment groups for 1 d after irradiation (DAI), whereas non-photochemical quenching (NPQ) decreased more noticeably. These changes in qP and NPQ were transient and had almost recovered to the control level by 2 DAI. Although carotenoid pigments also fluctuated during the experimental period, chlorophylls were almost entirely insensitive to the gamma rays. Irradiation also partially protected leaves from a decrease in photochemical efficiency (Fv/Fm) under conditions of UV-B $(2.2\;W\;m^{-2})$ and high light intensity $(800{\mu}mol\;m^{-2}\;s^{-1})$ . This enhanced stress resistance could be partly explained by higher levels of SOD and APX activities, as well as ascorbate content. Our results demonstrate for the first time that the carotenoid pigments are the most radio-sensitive and fastest recovering compounds in plants, and that SOD, APX, and ascorbate are important inducible factors for improving stress resistance through the use of in planta gamma-irradiation.

    원문보기

    원문보기
    무료다운로드 유료다운로드

    회원님의 원문열람 권한에 따라 열람이 불가능 할 수 있으며 권한이 없는 경우 해당 사이트의 정책에 따라 회원가입 및 유료구매가 필요할 수 있습니다.이동하는 사이트에서의 모든 정보이용은 NDSL과 무관합니다.

    NDSL에서는 해당 원문을 복사서비스하고 있습니다. 아래의 원문복사신청 또는 장바구니담기를 통하여 원문복사서비스 이용이 가능합니다.

    이미지

    Fig. 1 이미지
  7. [국내논문]   Cysteine Does Not Repress Adenosine-5'-Phosphosulfate Reductase Through Its Conversion to Either Sulfate or Glutathione  

    Lee Sangman (Department of Agricultural Chemistry, Division of Applied Biology and Chemistry, Kyungpook National University)
    Journal of plant biology = 식물학회지 v.48 no.1 ,pp. 57 - 63 , 2005 , 1226-9239 ,

    초록

    Cysteine (Cys) represses the activity of several key regulatory enzymes in the plant sulfate assimilatory pathway. However, it is not clear whether this effect arises from Cys itself or through its conversion to either sulfate or glutathione (GSH). Therefore, we examined this phenomenon by analyzing the activity of adenosine-5'-phosphosulfate (APS) reductase. Both APS reductase (AR) activity and mRNA levels were decreased by treating Arabidopsis thaliana roots with 1 mM Cys. The intracellular sulfate concentration was not affected, whereas enzymatic activity and, to some extent, the mRNA level, declined. Cys treatment in sulfur-starved plants also diminished both parameters. However, this response to Cys was more efficient than when plants were treated with an equal amount of sulfate. When Cys was removed from both Cys- and sulfate-fed plants, AR activity was recovered; the same removal of sulfate was not so effective. Moreover, buthionine sulfoximine (BSO), an inhibitor of GSH synthesis, did not influence the repression of AR by Cys. Finally the AR enzyme was inhibited by cysteine in vitro. These results indicate that Cys represses AR by inhibiting mRNA expression and by directly repressing enzymatic activity, rather than through its conversion to either sulfate or GSH.

    원문보기

    원문보기
    무료다운로드 유료다운로드

    회원님의 원문열람 권한에 따라 열람이 불가능 할 수 있으며 권한이 없는 경우 해당 사이트의 정책에 따라 회원가입 및 유료구매가 필요할 수 있습니다.이동하는 사이트에서의 모든 정보이용은 NDSL과 무관합니다.

    NDSL에서는 해당 원문을 복사서비스하고 있습니다. 아래의 원문복사신청 또는 장바구니담기를 통하여 원문복사서비스 이용이 가능합니다.

    이미지

    Fig. 1 이미지
  8. [국내논문]   Morpho-Anatomical Responses of Trigonella foenum graecum Linn. to Induced Cadmium and Lead Stress   피인용횟수: 1

    Ahmad Syed Hilal (Department of Botany, University of Kashmir ) , Reshi Zafar (Department of Botany, University of Kashmir ) , Ahmad Javed (Department of Botany, Jamia Hamdard, Hamdard Nagar ) , Iqbal Muhammad (Department of Botany, Jamia Hamdard, Hamdard Nagar)
    Journal of plant biology = 식물학회지 v.48 no.1 ,pp. 64 - 84 , 2005 , 1226-9239 ,

    초록

    Effect of different concentrations of cadmium $(0,\;5,\;15,\;30,\;50,\;100,\;200{\mu}g/g\;of\;soil)$ and lead $(0,\;25,\;50,\;100,\;200\;{\mu}g/g\;of\;soil)$ on morphological and anatomical features of Trigonella foenum graecum Linn. was studied at pre-flowering, flowering and post flowering stages. Morphological attributes, like number of leaves per plant, total leaf area of the plant and single leaf area, dry mass of stem, root and leaf, length of shoot, root and plant, size of stomata and stomatal pore, and the density of stomata on both epidermises were significantly reduced under metal stress at all the developmental stages. Trichome length on both epidermises increased while their density decreased under metal stress. Under cadmium stress, proportion of pith and vasculature decreased but cortex increased in the stem. Under lead stress, proportion of pith and vasculature increased but cortex decreased in the stem. In the root, proportion of vasculature and pith increased and cortex decreased in response to both cadmium and lead stresses. Dimensions of vessel element and xylem fibre in the wood of stem and root decreased under the cadmium and lead stresses. Decrease in density of vessel element in the stem and root with advancement of age was more pronounced in plants grown under cadmium and lead stresses.

    원문보기

    원문보기
    무료다운로드 유료다운로드

    회원님의 원문열람 권한에 따라 열람이 불가능 할 수 있으며 권한이 없는 경우 해당 사이트의 정책에 따라 회원가입 및 유료구매가 필요할 수 있습니다.이동하는 사이트에서의 모든 정보이용은 NDSL과 무관합니다.

    NDSL에서는 해당 원문을 복사서비스하고 있습니다. 아래의 원문복사신청 또는 장바구니담기를 통하여 원문복사서비스 이용이 가능합니다.

    이미지

    Fig. 1 이미지
  9. [국내논문]   Low Expression Profiles of Heat Stress-Related Genes in Capsicum annuum   피인용횟수: 3

    Ashrafuzzaman M. (Department of Biological Sciences and Institute of Molecular Biology and Genetics, Seoul National University ) , Oh S.June (Department of Pharmacology, Pharmacogenomics Research Center, College of Medicine, Inje University ) , Hong Choo Bong (Department of Biological Sciences and Institute of Molecular Biology and Genetics, Seoul National University)
    Journal of plant biology = 식물학회지 v.48 no.1 ,pp. 85 - 95 , 2005 , 1226-9239 ,

    초록

    A cDNA library was constructed for hot pepper plants that had been heat-shock-treated. We used a modified differential screening method, double negative screening, to isolate 500 cDNA clones that represented genes with low expression levels under conditions of high-temperature stress. Of those 500 clones, 200 were randomly selected for single-read sequencing from the 5' ends. After annotation with Blastx, the sequence was applied to InterProScan to scan for functional motifs of proteins. Among the cDNA clones analyzed, about $41\%$ of the ESTs could not be functionally classified. However, of those that could be, the largest portion of the ESTs $(15\%)$ were assigned to the category of cell rescue and defense; genes involved in cell cycle/DNA processing constituted the smallest group, comprising $1\%$ of the ESTs. Genes related to energy and protein fates constituted the second $(10\%)$ and third $(9\%)$ largest groups, respectively. Finally, $3\%$ of the ESTs were assigned to transcription, and $2\%$ to signal transduction. The high portion of unclassified ESTs probably resulted from the screening method, which was designed for low-expression messages. Likewise, the high number of ESTs for cell rescue and defense suggests that many genes with low levels of expression are associated with the stress response.

    원문보기

    원문보기
    무료다운로드 유료다운로드

    회원님의 원문열람 권한에 따라 열람이 불가능 할 수 있으며 권한이 없는 경우 해당 사이트의 정책에 따라 회원가입 및 유료구매가 필요할 수 있습니다.이동하는 사이트에서의 모든 정보이용은 NDSL과 무관합니다.

    NDSL에서는 해당 원문을 복사서비스하고 있습니다. 아래의 원문복사신청 또는 장바구니담기를 통하여 원문복사서비스 이용이 가능합니다.

    이미지

    Fig. 1 이미지
  10. [국내논문]   Genome Constitution and Classification Using Retrotransposon­Based Markers in the Orphan Crop Banana  

    Teo Chee How (Department of Biotechnology, Faculty of Food Science and Biotechnology, Universiti Putra Malaysia, Department of Biology, University of Leicester ) , Tan Siang Hee (Molecular Biology Department, Sime Darby Technology, Centru Sdn Bhd ) , Ho Chai Ling (Department of Biotechnology, Faculty of Food Science and Biotechnology, Universiti Putra Malaysia ) , Faridah Qamaruz Zaman (Department of Biology, Faculty of Science and Environmental Studies, Universiti Putra Malaysia ) , Othman Yasmin Rofina (Institute of Biological Sciences, Universiti Malaya ) , Heslop-Harrison John Seymour (Department of Biology, University of Leicester ) , Kalendar Ruslan (MTT/BI Plant Genomics Laboratory, Institute of Biotechnology, University of Helsinki ) , Schulman Alan Howard (MTT/BI Plant Genomics Laboratory, Institute of Biotechnology, University of Helsinki, Plant Breeding Biotechnology, MTT Agrifood Research Finland)
    Journal of plant biology = 식물학회지 v.48 no.1 ,pp. 96 - 105 , 2005 , 1226-9239 ,

    초록

    We have exploited the repetitive and dispersed nature of many long terminal repeat (LTR)-retrotransposon families for characterizing genome constitutions and classifying cultivars of the genus Musa. Insertional polymorph isms of the elements were studied using seven published and two newly designed primers facing outwards from the LTRs and reverse transcriptase (RT) domain of the retrotransposon. The primers generated specific amplification patterns showing the universal applicability of this marker type. The Inter-Retrotransposon Amplified Polymorphism (IRAP) markers distinguished the A and B genomes of the banana species (Musa acuminata Colla and Musa balbisiana Colla) and between banana cultivars. The IRAP markers enabled phylogenetic analysis of 16 Malaysian banana cultivars and determination of the genome constitution of hybrid banana (AAB, ABB, AABB, and AAAB), and gave information about ancestral genotypes of the hybrids. In addition, the IRAP detected new retrotransposon insertions into the genome of tissue culture regenerants. This PCR-based IRAP assay is amenable to large-scale throughput demands in screening breeding populations and is applicable for any crop.

    원문보기

    원문보기
    무료다운로드 유료다운로드

    회원님의 원문열람 권한에 따라 열람이 불가능 할 수 있으며 권한이 없는 경우 해당 사이트의 정책에 따라 회원가입 및 유료구매가 필요할 수 있습니다.이동하는 사이트에서의 모든 정보이용은 NDSL과 무관합니다.

    NDSL에서는 해당 원문을 복사서비스하고 있습니다. 아래의 원문복사신청 또는 장바구니담기를 통하여 원문복사서비스 이용이 가능합니다.

    이미지

    Fig. 1 이미지

논문관련 이미지