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Search: WFRF:(Rivera M) > Swedish University of Agricultural Sciences

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  • Santangelo, James S., et al. (author)
  • Global urban environmental change drives adaptation in white clover
  • 2022
  • In: Science. - : American Association for the Advancement of Science (AAAS). - 0036-8075 .- 1095-9203. ; 375
  • Journal article (peer-reviewed)abstract
    • Urbanization transforms environments in ways that alter biological evolution. We examined whether urban environmental change drives parallel evolution by sampling 110,019 white clover plants from 6169 populations in 160 cities globally. Plants were assayed for a Mendelian antiherbivore defense that also affects tolerance to abiotic stressors. Urban-rural gradients were associated with the evolution of clines in defense in 47% of cities throughout the world. Variation in the strength of clines was explained by environmental changes in drought stress and vegetation cover that varied among cities. Sequencing 2074 genomes from 26 cities revealed that the evolution of urban-rural dines was best explained by adaptive evolution, but the degree of parallel adaptation varied among cities. Our results demonstrate that urbanization leads to adaptation at a global scale.
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2.
  • Kareskoski, A. M., et al. (author)
  • Protein Composition of Seminal Plasma in Fractionated Stallion Ejaculates
  • 2011
  • In: Reproduction in domestic animals. - : Wiley. - 0936-6768 .- 1439-0531. ; 46:1, s. 79-84
  • Journal article (peer-reviewed)abstract
    • Seminal plasma (SP) contains several types of compounds derived from the epididymides and accessory glands. The aim of this study was to examine the protein composition of different ejaculate fractions. Trial I: fractionated ejaculates were collected from two normal and two subfertile stallions. Samples containing pre-sperm fluid and the first sperm-rich jets (HIGH-1), the main sperm-rich portion (HIGH-2), the jets with low sperm concentrations (LOW), and a combined whole-ejaculate (WE) sample was centrifuged, and the SP was filtered and frozen. A part of each SP sample was stored (5 degrees C, 24 h) with spermatozoa from HIGH-2 and skim milk extender. Sperm motility was evaluated after storage in extender mixed with the stallion's own SP or SP from one of the other stallions (sperm from a normal stallion stored in SP from a subfertile stallion and vice versa). Protein composition was analysed using reverse-phase liquid chromatography (RP-HPLC), N-terminal sequencing and mass spectrometry. The area-under-the-curve (AUC) was used for quantitative comparison of proteins within fractions. Trial II: semen samples were collected from seven stallions. Fractions with the highest (HIGH) and lowest (LOW) sperm concentrations and WE samples were examined using SDS-PAGE and densitometry. No significant differences emerged between fractions in the AUC-values of the Horse Seminal Protein-1 (HSP-1) and HSP-2 peaks, or the peak containing HSP-3 and HSP-4 (HSP-3/4). Levels of HSP-1, HSP-2 and HSP-3/4 were not significantly correlated with total sperm motility, progressive sperm motility or average path velocity after storage. Significant differences between ejaculate fractions in the amount of different protein groups present in SP were not found in Trial I; but in Trial II, the proteins in the 60-70 kDa range were more abundant in LOW than in HIGH and WE, indicating that this band contained proteins derived mainly from the seminal vesicles, which produce most of the SP in LOW.
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  • Result 1-2 of 2
Type of publication
journal article (2)
Type of content
peer-reviewed (2)
Author/Editor
Tack, Ayco J. M. (1)
Rodriguez-Martinez, ... (1)
Andrew, Nigel R. (1)
Andersson, M (1)
Alberti, Marina (1)
Pinho, Pedro (1)
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Puentes, Adriana (1)
Laine, Anna Liisa (1)
Bonte, Dries (1)
del Val, Ek (1)
Branquinho, Cristina (1)
Peres-Neto, Pedro R. (1)
Granath, Gustaf (1)
Crawford, Andrew J. (1)
Zhao, Zhigang (1)
Classen, Aimée T. (1)
Sanders, Nathan J. (1)
Ellers, Jacintha (1)
Raeymaekers, Joost A ... (1)
Brans, Kristien, I (1)
Gagnon, Edeline (1)
Scheepens, J.F. (1)
Parachnowitsch, Amy ... (1)
Santangelo, James S. (1)
Ness, Rob W. (1)
Angeoletto, Fabio (1)
Anstett, Daniel N. (1)
Anstett, Julia (1)
Baena-Diaz, Fernanda (1)
Carlen, Elizabeth J. (1)
Chaves, Jaime A. (1)
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Lázaro-Lobo, Adrián (1)
Moles, Angela T. (1)
Munshi-South, Jason (1)
Paule, Juraj (1)
Porth, Ilga M. (1)
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Whitney, Kaitlin Sta ... (1)
Johnson, Marc T. J. (1)
Rivas-Torres, Gonzal ... (1)
Anderson, Jill T. (1)
Dominoni, Davide M. (1)
Szulkin, Marta (1)
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University
Swedish University of Agricultural Sciences  (2)Undo refine
Uppsala University (1)
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Language
English (2)
Research subject (UKÄ/SCB)
Natural sciences (1)
Agricultural Sciences (1)

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