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181.
Emily Warner Bryndís Marteinsdóttir Vigdís F. Helmutsdóttir Johan Ehrlén Sinikka I. Robinson Eoin J. O'Gorman 《Oikos》2021,130(9):1572-1582
Species and community-level responses to warming are well documented, with plants and invertebrates known to alter their range, phenology or composition as temperature increases. The effects of warming on biotic interactions are less clearly understood, but can have consequences that cascade through ecological networks. Here, we used a natural soil temperature gradient of 5–35°C in the Hengill geothermal valley, Iceland, to investigate the effects of temperature on plant community composition and plant–invertebrate interactions. We quantified the level of invertebrate herbivory on the plant community across the temperature gradient and the interactive effects of temperature, plant phenology (i.e. development stage) and vegetation community composition on the probability of herbivory for three ubiquitous plant species, Cardamine pratensis, Cerastium fontanum and Viola palustris. We found that the percentage cover of graminoids and forbs increased, while the amount of litter decreased, with increasing soil temperature. Invertebrate herbivory also increased with soil temperature at the plant community level, but this was underpinned by different effects of temperature on herbivory for individual plant species, mediated by the seasonal development of plants and the composition of the surrounding vegetation. This illustrates the importance of considering the development stage of organisms in climate change research given the variable effects of temperature on susceptibility to herbivory at different ontogenetic stages. 相似文献
182.
183.
Basso Rossana Patricia Poester Vanice Rodrigues Benelli Jéssica Louise Stevens David A. Zogbi Heruza Einsfeld Vasconcellos Izadora Clezar da S. Pasqualotto Alessandro Comarú Xavier Melissa Orzechowski 《Mycopathologia》2021,186(1):109-112
Mycopathologia - Most reports associating fungal infections with COVID-19 have been cases of invasive aspergillosis. Here, we report a case of severe histoplasmosis and COVID-19 infections in an... 相似文献
184.
Desai Chirag S. Khan Aisha Bellio Michael A. Willis Micah L. Mahung Cressida Ma Xiaobo Baldwin Xavier Williams Brittney M. Baron Todd H. Coleman Leon G. Wallet Shannon M. Maile Robert 《Molecular and cellular biochemistry》2021,476(12):4331-4341
Molecular and Cellular Biochemistry - Plasma-derived extracellular vesicles (EV) can serve as markers of cell damage/disease but can also have therapeutic utility depending on the nature of their... 相似文献
185.
Anindya Chowdhury Sreeja Sasidharan Pinchu Xavier P. Viswanath V.A. Raghunathan 《生物化学与生物物理学报:生物膜》2021,1863(11):183695
We have studied the effect of acidic pH on the phase behavior of the zwitterionic lipid 1,2-dimyristoyl-sn-glycero-3-phosphocholine (DMPC) using differential scanning calorimetry and x-ray scattering. Dispersions of DMPC in HCl solutions of pH = 4 and 3 behave identical to dispersions in water. The main transition temperature increases sharply and the pre-transition disappears at lower pH. An untilted gel phase is observed at pH = 2 and 1, in contrast to the tilted gel phase found at higher pH. The relatively large periodicity of the untilted gel phase, in comparison to that of the tilted gel phase occurring near neutral pH, clearly demonstrates the simultaneous charging and dehydration of the headgroups as the pH approaches the pK of the phosphate group. Headgroup dehydration at low pH also leads to the formation of DMPC crystallites and the inverted hexagonal phase at low and high temperatures, respectively, after a few days of incubation. These results show the significant effect of acidic pH on the phase behavior of zwitterionic lipids. 相似文献
186.
187.
Lilia G Noriega Zesergio Melo Renuga D Rajaram Adriana Mercado Armando R Tovar Laura A VelazquezVillegas María CastaedaBueno Yazmín ReyesLpez Dongryeol Ryu Lorena RojasVega German MagaaAvila Adriana M LpezBarradas Mariana SnchezHernndez Anne Debonneville Alain Doucet Lydie Cheval Nimbe Torres Johan Auwerx Olivier Staub Gerardo Gamba 《EMBO reports》2021,22(5)
188.
Ecosystems - Intertidal ecosystems are important because of their function as coastal protection and ecological value. Sea level rise may lead to submergence of salt marshes worldwide. Salt marshes... 相似文献
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190.
Iman B. Hassaballa Catherine L. Sole Xavier Cheseto Baldwyn Torto David P. Tchouassi 《PLoS neglected tropical diseases》2021,15(2)
The bioecology of phlebotomine sand flies is intimately linked to the utilization of environmental resources including plant feeding. However, plant feeding behavior of sand flies remains largely understudied for Afrotropical species. Here, using a combination of biochemical, molecular, and chemical approaches, we decipher specific plant-feeding associations in field-collected sand flies from a dry ecology endemic for leishmaniasis in Kenya. Cold-anthrone test indicative of recent plant feeding showed that fructose positivity rates were similar in both sand fly sexes and between those sampled indoors and outdoors. Analysis of derived sequences of the ribulose-1,5-bisphosphate carboxylase large subunit gene (rbcL) from fructose-positive specimens implicated mainly Acacia plants in the family Fabaceae (73%) as those readily foraged on by both sexes of Phlebotomus and Sergentomyia. Chemical analysis by high performance liquid chromatography detected fructose as the most common sugar in sand flies and leaves of selected plant species in the Fabaceae family. Analysis of similarities (ANOSIM) of the headspace volatile profiles of selected Fabaceae plants identified benzyl alcohol, (Z)-linalool oxide, (E)-β-ocimene, p-cymene, p-cresol, and m-cresol, as discriminating compounds between the plant volatiles. These results indicate selective sand fly plant feeding and suggest that the discriminating volatile organic compounds could be exploited in attractive toxic sugar- and odor- bait technologies control strategies. 相似文献