• 제목/요약/키워드: Specific plant species

검색결과 663건 처리시간 0.037초

Plant Uptake of Heavy Metals in Andong Serpentine Soil

  • Kim, Jeong-Myeong;Yang, Keum-Chul;Choi, Sang-Kyoo;Yeon, Myung-Hun;Shin, Jin-Ho;Shim, Jae-Kuk
    • 환경생물
    • /
    • 제24권4호
    • /
    • pp.408-415
    • /
    • 2006
  • Serpentines soil have high values of magnesium and low values of calcium, and are usually deficient in N and P, but rich in iron, Ni, silicates. We investigated serpentine soil properties and measured the content of nutrient elements and heavy metals in shoots and root of plant species which were in common at serpentine and non-serpentine areas in Andong, Korea. The soils showed higher pH value above 6.9. The contents of Ni, Cr, Fe and Mg of serpentine soils exhibited 77, 27, 5.5 and 12.5 times more than in non-serpentine soils, respectively. The content of Na was almost same but K was two times higher in non-serpentine soil, compared with serpentine soil. The contents of nutrient element such as K, Ca, Na and P in serpentine plants did not show conspicuous differences with non-serpentine plants. On the other hand, the concentrations of Ni, Cr, Fe, Mg and Mg/Ca were very high in plant on serpentine area. The all plant species collected at the serpentine site were bodenvag plants, which are not restricted to a specific type of substrate. By the plant species and parts of plant tissues, the absorption levels and patterns showed high variation and were species-specific. Carex lanceolata, Lysimachia clethroides and Cynanchum paniculatum contained much chromium and Eupatorium chinense and C. paniculatum exhibited high contents of Ni. In leaf tissue, C. lanceolata, Rubus parvifolius, Festuca ovina, Quercus serrata, and L. clethroides took comparatively large amount of Cr in serpentine area. E. chinense contained large amount of Ni, Cr and Fe in a leaf tissue. The stem of Galium verum, Juniperus rigida included high amount of Cr, Ni and Fe. And C. paniculatum absorbed large amount of Ni and Cr in the stem.

Performance Assessment of Three Turfgrass Species, in Three Different Soil Types, and their Responses to Water Deficit in Reinforced Cells, Growing in the Urban Environment

  • Ow, L.F;Ghosh, S.;Chin, S.W.
    • Weed & Turfgrass Science
    • /
    • 제4권4호
    • /
    • pp.338-347
    • /
    • 2015
  • Reinforcement cells are used to aid grass growth and taken together, this serves to extend greenery beyond the conventional spaces of lawns, tree pits, gardens, and parks, and is advantageous to urban cities since space for greening is often limited. Drought has variable effects on plant life and the resilience of turf to drought resistance also varies with species. Changes in photosynthetic ability were more pronounced for media rather than grass species. The media of sand without organic matter was found to be least suited for drought resistance. Normalized difference vegetation index (NDVI) and digital image analysis (DIA) data were generally in favour of Zoysia species as oppose to A. compressus. In A. compressus, selective traits such as, a more extensive root system and lower specific leaf area (SLA) were not an underlying factor that assisted this grass with enhanced drought resistance. Generally, WUE was found to be strongly related to plant characterises such as overall biomass, photosynthetic features as well as the lushness indexes, and specific leaf area. This study found a strong relationship between WUE and a suite of plant characteristics. These traits should serve as useful selection criteria for species with the ability to resist water stress.

기주특이적 독소를 생성하는 Alternaria 병원균군의 RAPD 분석 (RAPD Analysis of Host-specific Toxin (HST) Producing Alternaria species)

  • 김병련;강희완;유승헌;이등정부;갑원철개
    • 한국식물병리학회지
    • /
    • 제14권1호
    • /
    • pp.92-98
    • /
    • 1998
  • RAPD analysis was performed from four host-specific toxin (HST) producing Alternaria, i.e., A. kikuchiana, A. mali, a. longipes and A. Longipes and A. alternata f. sp. lycopersici, nonpathogenic A. alternata and A. brassicicola to assess their phylogenetic relationship. DNA polymorphism was detected among species (pathotypes) of HST producing Alternaria by PCR amplification and differentiation of the species was recognized by RAPD analysis. Primer OPA-02 was the most profitable among 7 notificated primers for differentiation of the HST producing Alternaria species. UPGMA analysis of the RAPD bands from alternaria spp. revealed that HST producing Alternaria and nonpathogenic a. alternata are closely related.

  • PDF

Genetic Relationships of Lactuca spp. Revealed by RAPD, Inter-SSR, AFLP, and PCR-RFLP Analyses

  • Yang, Tae-Jin;Jang, Suk-Woo;Kim, Won-Bae
    • Journal of Crop Science and Biotechnology
    • /
    • 제10권1호
    • /
    • pp.27-32
    • /
    • 2007
  • RAPD, Inter-SSR, and AFLP markers were used to assess the genetic diversity of lettuce cultivars and the phylogenetic relationships in Lactuca spp. A total of 216 polymorphic bands from seven RAPD primers, four Inter-SSR primers, and five AFLP primer combinations were used to elucidate the genetic similarity among lettuce cultivars. Forty-four lettuce accessions were subdivided into discrete branches according to plant type: crisphead, butterhead, and stem type, with some exceptions. The leafy- and cos-type accessions were intermingled in other groups with no discrete branch indicating that these are more diverse than others. Three accessions, including the Korean cultivar 'Cheongchima', the Korean local landrace 'Jinjam', and the German cultivar 'Lolla Rossa' were classified as the most diverse accessions. Twenty bands were unique in specific cultivars. Among these, three were specific in a plant type; one in Korean leafy type, one in crisphead type, and one in cos type lettuce. In the phylogenetic analysis among Lactuca species, L. saligna, L. serriola, and L. georgica clustered in a sister branch of the L. sativa complex. Two L. virosa accessions show the highest intra-specific relationships. L. perennis outlied from all the other Lactuca species at a genetic similarity of 0.53 and clustered with two Cichorium species, C. intybus and C. endivia, with genetic similarity of 0.67. The phylogenetic tree was supported by data from polymorphism of chloroplast genome which was revealed by PCR-RFLP.

  • PDF

Rapid Identification of Potato Scab Causing Streptomyces spp. from Soil Using Pathogenicity Specific Primers

  • Kim, Jeom-Soon;Lee, Young-Gyu;Ryu, Kyoung-Yul;Kim, Jong-Tae;Cheon, Jeong-Uk
    • 한국식물병리학회:학술대회논문집
    • /
    • 한국식물병리학회 2003년도 정기총회 및 추계학술발표회
    • /
    • pp.134.2-135
    • /
    • 2003
  • The plant-pathogenic species S. scabies, S. acidiscabies, and S. turgidiscabies cause the scab disease of potato and produce the phytotoxins, thaxtomins. necl, a gene conferring a necrogenic phenotype, is involved in pathogenicity and physically linked to the thaxtomin A biosynthetic genes. Identification of the pathogenic strains of Streptomyces from soil was performed through the polymerase chain reaction by using specific pathogenicity primer sets derived from the necl gene sequences of Streptomyces smbies. The DNA was extracted from soil using a bead-beating machine and modifications of the FastPrep system. The DNA was suitable for direct use in the PCR. The PCR products showed the bands of approximately 460 bp. This methods can be very usuful in identifying species responsible for scab diseases and studying on the ecology of plant-pathogenic Streptomyces spp.

  • PDF

PCR-based markers developed by comparison of complete chloroplast genome sequences discriminate Solanum chacoense from other Solanum species

  • Kim, Soojung;Park, Tae-Ho
    • Journal of Plant Biotechnology
    • /
    • 제46권2호
    • /
    • pp.79-87
    • /
    • 2019
  • One of wild diploid Solanum species, Solanum chacoense, is one of the excellent resources for potato breeding because it is resistant to several important pathogens, but the species is not sexually compatible with potato (S. tuberosum) causing the limitation of sexual hybridization between S. tuberosum and S. chacoense. Therefore, diverse traits regarding resistance from the species can be introgressed into potato via somatic hybridization. After cell fusion, the identification of fusion products is crucial with molecular markers. In this study, S. chacoense specific markers were developed by comparing the chloroplast genome (cpDNA) sequence of S. chacoense obtained by NGS (next-generation sequencing) technology with those of five other Solanum species. A full length of the cpDNA sequence is 155,532 bp and its structure is similar to other Solanum species. Phylogenetic analysis resulted that S. chacoense is most closely located with S. commersonii. Sequence alignment with cpDNA sequences of six other Solanum species identified two InDels and 37 SNPs specific sequences in S. chacoense. Based on these InDels and SNPs regions, four markers for distingushing S. chacoense from other Solanum species were developed. These results obtained in this research could help breeders select breeding lines and facilitate breeding using S. chacoense in potato breeding.

배추 뿌리혹병균 Plasmodiophora brassicae의 종 특이적 프라이머 개발 (Development of Species-Specific Primers for Plasmodiophora brassicae, Clubroot Pathogen of Kimchi Cabbage)

  • 최진수;양슬기;송정영;김홍기
    • 식물병연구
    • /
    • 제20권1호
    • /
    • pp.21-24
    • /
    • 2014
  • Plasmodiophora brassicae는 십자화과 작물에 뿌리혹병을 일으키는 주요 병원균이다. 본 연구에서는 뿌리혹병균의 신속 정확한 검출을 위해서 뿌리혹병균에 대한 새로운 종 특이적 프라이머를 개발하고자 하였다. 새롭게 개발된 프라이머들은 10종의 주요 토양병원균을 비롯하여 기주인 배추 DNA와는 반응하지 않고 P. brassicae와만 반응하는 특이성을 갖고 있었다. 그 가운데 Primer ITS1-1/1-2는 민감도 검정 결과, 10 spores/ml의 DNA까지 검출이 가능함으로써, first round PCR용임에도 불구하고 이전의 검출법 보다 감도가 높고 정확한 결과를 얻었다. Quantitative real-time PCR로 분석할 경우에는 더 적은 수의 포자까지 안정적으로 검출해 낼 수 있어 새로운 P. brassicae 종 특이적 프라이머로서의 유용성을 확인할 수 있었다.

Allium속 이배체 2종과 사배체 2종의 Giemsa C-분염핵형 (Giemsa C-banded Karyotypes in Two Diploid and Two Tetraploid Allium Species)

  • 서봉보
    • Journal of Plant Biology
    • /
    • 제32권3호
    • /
    • pp.181-188
    • /
    • 1989
  • C-banded karyotypes in A. anisopodium, A. sacculiferum, A. deltoide-fistulosum and A. splendens were investigated. The chromosome compositions were diploid of 2n=16 in A anisopodium and A. splendens, and teiraploid of 2n=32 in a. sacculiferum and A. deltoide-fistulosum. The bands were distributed in telomeric parts of the chromosomes dominantly in addition to interstitial regions sporadically, resulting in the specific C-banded karyo types according to the species. No centromeric band was observed in these species except only one chromosome in A. deltoidefistulosum. The interspecific relationship based on the C-band distribution will be discussed.

  • PDF

Dunaliella salina 당지질의 불포화반응에 미치는 암처리 및 DCMU의 효과 (Effects of Dark Treatment and DCMU on Desaturation of Galactolipids in Dunaliella salina)

  • 조성호
    • Journal of Plant Biology
    • /
    • 제36권3호
    • /
    • pp.293-296
    • /
    • 1993
  • Effects of dark treatment and N1-dichlorophenyl-N3-dimethylurea (DCMU) on the desaturation of galactolipids of Dunaliella salina were investigated to see whether light-driven photosynthetic electron transport is involved in in vivo desaturation of galactolipids. The incorporation of radioactive fatty acid precursors ([14C]lauric acid) into galactolipids, mainly composed of prokaryotic molecular species, was most affected among different polar lipid classes by both treatments. The analysis of specific radioactivities of individual galactolipid molecular species revealed that their synthesis was greatly inhibited by the treatments except for eukaryotic molecular species, 18 : 3/ 18 : 3 digalactosyldiacylglycerol, whose desaturation occurs in endoplasmic reticulum.

  • PDF