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    Wyświetlanie 1-5 z 5
    Tytuł:
    Fine roots of Picea abies compensate for drought stress in the rainfall reduction experiment
    Autorzy:
    Lorenc, F.
    Pešková, V.
    Modlinger, R.
    Mrnka, L.
    Tomášková, I.
    Šenfeld, P.
    Turčáni, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/2077946.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    climate change
    community
    ectomycorrhiza
    Norway spruce
    WinRhizo
    Opis:
    This study evaluates the influence of repeated artificial drought stress on the fine root charac- teristics – including ectomycorrhizae – of Norway spruce [Picea abies (L.) Karst]. The experimental site consisted of two plots in a mature spruce monoculture stand. The water regime at parts of both plots was regulated by shelters and an isolation trench during vegetation season (spring to autumn) since 2010. Root samples were collected during autumn in 2010, 2012, and 2013. Root analyses revealed the effect of drought stress on mycorrhizal root tips changed over time. While a density of active mycorrhizae was about 34% lower in drought-stressed areas compared to nonstressed (control) areas in 2010, it increased by 15% in 2012 and by 22% in 2013 over both plots. We observed the less pronounced effect of drought on a proportion of active mycorrhizae, but it generally followed the pattern of active mycorrhizae density. The density of nonactive mycorrhizae was not influenced by drought but significantly fluctuated during the course of the experiment. Other root characteristics such as the dry mass of fine roots (< 1 mm), the specific length of fine roots (< 1 mm) and the composition of the ectomycorrhizal community (primarily dominated by Amphinema byssoides, Tylospora fibrillosa, Tylopilus felleus, and Cenococcum geophilum) were also not significantly influenced by drought. Our results indicate the ability of Norway spruce fine roots to com- pensate for repeated drought stress of the intermediate intensity.
    Źródło:
    Dendrobiology; 2018, 80; 91-100
    1641-1307
    Pojawia się w:
    Dendrobiology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Application of the minirhizotron technique to studying the roots of fruit plants
    Autorzy:
    Głuszek, S
    Sas Paszt, L
    Sumorok, B.
    Derkowska, E
    Kozera, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/102243.pdf
    Data publikacji:
    2013
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    minirhizotron
    fine roots
    pomological plants
    Opis:
    Minirhizotron, a non-destructive technique is based on the application of transparent tubes, located in plant’s root zone. This method has been known since the beginning of 20th century and is used for plant root’s observations, especially in forest trees (Scots pine, Norway spruce, silver fir, birch), steppe grasses, vegetables and cereals. Minirhizotron technique is also applicable to pomological plants observations, mostly apples, but many others orchard species were observed with this method last years. The study of root growth dynamics in fruit plants using the non-destructive, minirhizotron method is conducted in the Pomological Orchard in Skierniewice. The objects of the observations are the roots of: apple trees cultivar. ‘Gold Milenium’, blackcurrant bushes cultivar ‘Tiben’ and sweet cherry cultivar ‘Vanda’. The observations were carried out monthly over a period of from March to November.
    Źródło:
    Advances in Science and Technology. Research Journal; 2013, 7, 18; 45-53
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Acclimation of poplar trees to heavy metals in polluted habitats: I. Carbohydrate metabolism in fine roots of Populus deltoides
    Autorzy:
    Lorenc-Plucinska, G
    Stobrawa, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/58719.pdf
    Data publikacji:
    2005
    Wydawca:
    Polskie Towarzystwo Botaniczne
    Tematy:
    glucose
    fructokinase
    fructose
    glycolysis
    glyceraldehyde 3-phosphate dehydrogenase
    non-structural carbohydrate
    carbohydrate
    hexokinase
    galactose
    soluble carbohydrate
    polluted habitat
    root
    poplar tree
    stachyose
    sucrose
    starch
    Populus deltoides
    concentration
    sugar
    raffinose
    glucose 6-phosphate dehydrogenase
    heavy metal
    Opis:
    Concentrations of total nonstructural carbohydrates (TNC), soluble carbohydrates, starch, sucrose, glucose, fructose, raffinose, galactose, stachyose, mannitol and specific activities of soluble acid (AI) and neutral (NI) invertases, sucrose synthase (SuSy), hexokinase (HK), fructokinase (FK), glyceraldehyde 3-phosphate dehydrogenase (GAPDH) and glucose 6-phosphate dehydrogenase (G6PDH) were analyzed in fine roots of Populus deltoides Bartr. ex Marsh growing at a polluted site (near copper smelters) and a control site (free from heavy pollution). Also chemical properties of the soil from both sites were assessed. In comparison with the control, fine roots from the polluted site contained greater concentrations of TNC, soluble sugars, starch and sucrose but less hexoses, so they had higher values of sucrolysis index (sucrose/hexoses). The activity of AI, NI and SuSy declined insignificantly, while specific activities of HK, FK, GAPDH and G6PDH were significantly inhibited. The results suggest that a long-term heavy metal stress leads to an accumulation of carbohydrates and altering activities of glycolysis and the oxidative pentose phosphate pathway in fine roots.
    Źródło:
    Acta Societatis Botanicorum Poloniae; 2005, 74, 1
    0001-6977
    2083-9480
    Pojawia się w:
    Acta Societatis Botanicorum Poloniae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Fine roots biomass and morphology in a chronosequence of young Pinus sylvestris stands growing on a reclaimed lignite mine spoil heap
    Autorzy:
    Jagodzinski, A.M.
    Kalucka, I.
    Powiązania:
    https://bibliotekanauki.pl/articles/2130192.pdf
    Data publikacji:
    2010
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    root
    biomass allocation
    morphology
    chronosequence
    young plant
    Pinus sylvestris
    Scotch pine
    stand
    growing
    reclaimed area
    post-industrial area
    mine dump
    lignite mine
    spoil heap
    Opis:
    The morphology of fine roots ( 2 mm diameter) as well as fine and coarse root biomass was investigated in a chronosequence consisting of 6-, 9-, 11-, 15-, 17- and 20-year-old Scots pine (Pinus sylvestris) stands growing on a reclaimed lignite mine spoil heap. Core method of destructive root sampling was used to establish whether root morphology and biomass varied with stand age in the upper 20 cm of soil. Fine root biomass ranged from 0.78 to 3.11 Mg ha-1, coarse root biomass ranged from 0.82 to 2.74 Mg ha-1, whereas root necromass ranged from 1.03 Mg ha-1 to 2.87 Mg ha-1 in the chronosequence studied. Fine root diameter as well as length, projected area, and surface area expressed per unit area increased significantly with stand age. Moreover, our study revealed that when stand age increases, specific fine root biomass increases, whereas specific root length and area decreases. The results support our hypothesis that stand age has an effect on standing fine root biomass and morphology.
    Źródło:
    Dendrobiology; 2010, 64; 19-30
    1641-1307
    Pojawia się w:
    Dendrobiology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Arum-type of arbuscular mycorrhizae, dark septate endophytes and Olpidium spp. in fine roots of container-grown seedlings of Sorbus torminalis (Rosaceae)
    Autorzy:
    Bzdyk, R.M.
    Kohler, J.
    Olchowik, J.
    Aleksandrowicz-Trzcinska, M.
    Kirisits, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/56496.pdf
    Data publikacji:
    2016
    Wydawca:
    Polskie Towarzystwo Botaniczne
    Opis:
    The aim of this study was to determine the mycorrhizal status of nursery seedlings of the wild service tree (Sorbus torminalis), which belongs to the Rosaceae family. Its mycorrhizal associations are still fragmentarily known, and data from the few existing studies indicate that it forms ectomycorrhizal symbiosis (ECM). We analyzed the degree of mycorrhizal colonization of thirty 2-year-old container-grown S. torminalis nursery seedlings, which belonged to three single-tree progenies. The roots were dominated by arbuscular mycorrhizae (AM), with the morphology of the Arum-type containing arbuscules, vesicles and hyphae; however, no ECM structures were found. The degree of root colonization of the analyzed seedlings by AM fungi was 83.6% and did not differ significantly between the three single-tree progenies. In addition to AM, structures of dark septate endophytes (0.7%) and sporangia of Olpidium spp. (1.1%) were found in wild service tree roots. In agreement with previous studies, we confirmed arbuscular mycorrhizae for S. torminalis. Moreover, this is the first report that roots of this Sorbus species show the Arum-type morphology of AM and are associated with Olpidium species.
    Źródło:
    Acta Societatis Botanicorum Poloniae; 2016, 85, 2
    0001-6977
    2083-9480
    Pojawia się w:
    Acta Societatis Botanicorum Poloniae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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