Water and phosphorus content affect PAH dissipation in spiked soil planted with mycorrhizal alfalfa and tall fescue

A multisubunit RNA polymerase enzyme is ultimately responsible for transcription initiation and elongation of RNA, but recognition of the proper start site by the enzyme is regulated by general, temporal and gene-specific trans-factors interacting at promoter and enhancer DNA sequences. To understand the molecular mechanisms which precisely regulate the transcription initiation event, it is crucial to elucidate the structure of the transcription factor/DNA complexes involved. Electron spectroscopic imaging (ESI) provides the opportunity to visualize individual DNA molecules. Enhancement of DNA contrast with ESI is accomplished by imaging with electrons that have interacted with inner shell electrons of phosphorus in the DNA backbone. Phosphorus detection at this intermediately high level of resolution (≈lnm) permits selective imaging of the DNA, to determine whether the protein factors compact, bend or wrap the DNA. Simultaneously, mass analysis and phosphorus content can be measured quantitatively, using adjacent DNA or tobacco mosaic virus (TMV) as mass and phosphorus standards. These two parameters provide stoichiometric information relating the ratios of protein:DNA content.

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Effect of endophyte-infected tall fescue on hepatic gene expression in cattle

10.32469/10355/43164 ◽

2013 ◽

Author(s):

Jenny K. Bryant

Keyword(s):

Gene Expression ◽

Tall Fescue ◽

Hepatic Gene Expression

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Isolation and identification of plant growth-promoting bacteria associated with tall fescue

Proceedings of the New Zealand Grassland Association ◽

10.33584/jnzg.2009.71.2751 ◽

2009 ◽

pp. 211-216 ◽

Cited By ~ 5

Author(s):

J. Monk ◽

E. Gerard ◽

S. Young ◽

K. Widdup ◽

M. O'Callaghan

Keyword(s):

New Zealand ◽

Plant Growth ◽

Tall Fescue ◽

Festuca Arundinacea ◽

Plant Growth Promoting Bacteria ◽

Beneficial Bacteria ◽

Isolation And Identification ◽

Naturally Occurring ◽

Plant Growth Promoting ◽

Growth Promoting

Tall fescue (Festuca arundinacea) is a useful alternative to ryegrass in New Zealand pasture but it is slow to establish. Naturally occurring beneficial bacteria in the rhizosphere can improve plant growth and health through a variety of direct and indirect mechanisms. Keywords: rhizosphere, endorhiza, auxin, siderophore, P-solubilisation

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THE PERFORMANCE OF S170 TALL FESCUE IN CANTERBURY

Proceedings of the New Zealand Grassland Association ◽

10.33584/jnzg.1974.36.1401 ◽

1974 ◽

pp. 214-215

Author(s):

B.R. Watkin

Keyword(s):

New Zealand ◽

White Clover ◽

Tall Fescue ◽

Trifolium Repens ◽

Festuca Arundinacea ◽

Sheep Grazing ◽

Selection Of

AN Aberystwyth selection of tall fescue (Festuca arundinacea Schreb.), known as S170, was sown with certified New Zealand white clover (Trifolium repens) and re' clover (T. pratense) and compared under sheep grazing with other grass/clover pastures at the Grasslands Division Regional Station at Lincoln (Watkin, 1975) .

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A REVIEW OF 10 YEARS' RESEARCH WITH RED CLOVERS UNDER GRAZING IN SOUTHLAND

Proceedings of the New Zealand Grassland Association ◽

10.33584/jnzg.1989.50.1885 ◽

1989 ◽

pp. 181-187

Author(s):

R.J.M. Hay ◽

D.L. Ryan

Keyword(s):

Tall Fescue ◽

Red Clover ◽

Farming Systems ◽

Seasonal Growth ◽

Sheep Grazing ◽

High Quality ◽

Late Flowering ◽

Heavy Weight ◽

Widespread Acceptance ◽

Summer Growth

In a series of trials at Grasslands Gore, over 10 years, the late-flowering tetraploid red clover 'Grassland Pawera' was more productive and persistent than other red clover cultivars. The strong summer growth of Pawera meets the need for heavy-weight lamb feed and high quality forage for conservation in intensive sheep farming systems in Southland. Lenient. infrequent defoliation is necessary to maximise DM production and persistence of Pawera. The most compatible of the grasses evaluated was 'Grasslands Roa' tall fescue. However, 'Grasslands Nui' ryegrass will still be the major grass sown with Pawera owing to its widespread acceptance. In ryegrass mixtures, sowing rates of 5-7 kg/ha of red clover were needed to optimise establishment and subsequent yield. Evidence of oestrogenic activity of Pewera to sheep prompted Grasslands Division to select within Pawera for a low formononetin cultivar. Keywords: red clover, Pawera. Hamua, Turoa. G21. G22, G27. oestrogenic activity, Nui ryegrass, Roa tall fescue, Maru phalaris. Southland, sheep grazing, frequency, intensity, quality. seasonal growth

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MANAGEMENT OF NEW CULTIVARS FOR DRYLAND

Proceedings of the New Zealand Grassland Association ◽

10.33584/jnzg.1983.44.1650 ◽

1983 ◽

pp. 61-73 ◽

Cited By ~ 5

Author(s):

J.A. Lancashire ◽

J.L. Brock

Keyword(s):

Tall Fescue ◽

Seed Quality ◽

Technical Information ◽

Grazing Management ◽

Grass Species ◽

Hill Country ◽

Seasonally Dry ◽

Prairie Grass ◽

Management Procedures ◽

New Cultivars

Some characteristics of seed quality, establishment rates, performance in mixtures and response to grazing management of 5 new pasture plants with potential in dryland are described. On a dry hill country site in the Wairarapa, the contribution of the sown grasses established in separate plots with clovers under rotational grazing was 'Grasslands Wana' cocksfoot 65%; 'Grasslands Maru' phalaris 23%; 'Grasslands Matua' prairie grass 22%; and 'Grasslands Roa' tall fescue 13% after 2 years. The other main grass species was resident perennial ryegrass which established from buried seed (ca. 240 plants/m*) and had a major impact on the establishment and growth of the sown grasses. On a seasonally dry Manawatu flat land soil 3 grazing managementsviz. set stocked all year (S); rotational all year (R); and combination (Cl (set stocked from lambing to drafting and rotational for the remainder of the year) were applied to mixtures of the new cultivars (except that 'Grasslands Apanui' cocksfoot replaced Wana) with ryegrass and white clover stocked at 20 sheep/ha. After 3 years the contribution of the new cultivars was negligible under S and ryegrass was dominant. The R pastures became cocksfoot dominant and Matua (in winter) and chicory (in summer) contributed more than in the S system. The C system produced the most evenly balanced species contribution with only Roa remaining at (5%. A sub-trial with cocksfoot cultivars demonstrated that Wana maintained better production and tiller density ~ll,000/m2 ) than Apanui (1000/m' ) under set stocking IS). Although some of the new cultivars will require specialised management procedures to fulfil their potential in dryland, the increasing and widespread use of Matua prairie grass in farming suggests that these techniques can be adopted in commercial agriculture provided good technical information is available in a management package when the cultivar is released. Keywords: Dryland, grazing management, mixtures, Matua prairie grass, Wana cocksfoot, Roa tall fescue, Maru phalaris, Chicory

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