Browsing by Author "Liu A"

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    Globally invariant metabolism but density-diversity mismatch in springtails
    (Springer Nature Limited, 2023-02-07) Potapov AM; Guerra CA; van den Hoogen J; Babenko A; Bellini BC; Berg MP; Chown SL; Deharveng L; Kováč Ľ; Kuznetsova NA; Ponge J-F; Potapov MB; Russell DJ; Alexandre D; Alatalo JM; Arbea JI; Bandyopadhyaya I; Bernava V; Bokhorst S; Bolger T; Castaño-Meneses G; Chauvat M; Chen T-W; Chomel M; Classen AT; Cortet J; Čuchta P; Manuela de la Pedrosa A; Ferreira SSD; Fiera C; Filser J; Franken O; Fujii S; Koudji EG; Gao M; Gendreau-Berthiaume B; Gomez-Pamies DF; Greve M; Tanya Handa I; Heiniger C; Holmstrup M; Homet P; Ivask M; Janion-Scheepers C; Jochum M; Joimel S; Claudia S Jorge B; Jucevica E; Ferlian O; Iuñes de Oliveira Filho LC; Klauberg-Filho O; Baretta D; Krab EJ; Kuu A; de Lima ECA; Lin D; Lindo Z; Liu A; Lu J-Z; Luciañez MJ; Marx MT; McCary MA; Minor MA; Nakamori T; Negri I; Ochoa-Hueso R; Palacios-Vargas JG; Pollierer MM; Querner P; Raschmanová N; Rashid MI; Raymond-Léonard LJ; Rousseau L; Saifutdinov RA; Salmon S; Sayer EJ; Scheunemann N; Scholz C; Seeber J; Shveenkova YB; Stebaeva SK; Sterzynska M; Sun X; Susanti WI; Taskaeva AA; Thakur MP; Tsiafouli MA; Turnbull MS; Twala MN; Uvarov AV; Venier LA; Widenfalk LA; Winck BR; Winkler D; Wu D; Xie Z; Yin R; Zeppelini D; Crowther TW; Eisenhauer N; Scheu S
    Soil life supports the functioning and biodiversity of terrestrial ecosystems. Springtails (Collembola) are among the most abundant soil arthropods regulating soil fertility and flow of energy through above- and belowground food webs. However, the global distribution of springtail diversity and density, and how these relate to energy fluxes remains unknown. Here, using a global dataset representing 2470 sites, we estimate the total soil springtail biomass at 27.5 megatons carbon, which is threefold higher than wild terrestrial vertebrates, and record peak densities up to 2 million individuals per square meter in the tundra. Despite a 20-fold biomass difference between the tundra and the tropics, springtail energy use (community metabolism) remains similar across the latitudinal gradient, owing to the changes in temperature with latitude. Neither springtail density nor community metabolism is predicted by local species richness, which is high in the tropics, but comparably high in some temperate forests and even tundra. Changes in springtail activity may emerge from latitudinal gradients in temperature, predation and resource limitation in soil communities. Contrasting relationships of biomass, diversity and activity of springtail communities with temperature suggest that climate warming will alter fundamental soil biodiversity metrics in different directions, potentially restructuring terrestrial food webs and affecting soil functioning.
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    Natural Variation in Chromium Accumulation and the Development of Related EST-SSR Molecular Markers in Miscanthus sinensis
    (MDPI (Basel, Switzerland), 2024-07-05) Nie G; Liu A; Ghanizadeh H; Wang Y; Tang M; He J; Feng G; Huang L; Zhang X; Tani E
    Soil pollution by heavy metals is a serious environmental concern globally. Hexavalent (VI) chromium (Cr) is one of the main pollutants causing groundwater and soil heavy metal pollution. Miscanthus sinensis is a C4 perennial grass species with a high level of heavy metal tolerance. This species can effectively remove Cr from soils and maintain desirable biomass production under Cr stress. This research aimed to characterize and compare Cr accumulation in 58 genotypes of M. sinensis and to develop Expressed Sequence Tag–Simple Sequence Repeat (EST-SSR) markers associated with Cr tolerance. The results show that the pattern of translocation of Cr in plants differed among the 58 M. sinensis genotypes following treatment of 200 mg/L of Cr6+; however, in most genotypes, the Cr was primarily accumulated in roots. A total of 43,367 EST-SSRs were identified, and 88 EST-SSR primer pairs corresponding to candidate genes involved in Cr accumulation in M. sinensis were selected for validation. Subsequently, 170 polymorphic loci generated from 24 validated EST-SSRs were used for the population structure and marker–trait association analysis. Based on a general linear model (GLM), a total of 46 associations were identified (p < 0.05), with 14 EST-SSRs markers associated with target traits. Among them, four genes related to ABC transporters, wall-associated receptor kinases, as well as two high-affinity sulfate transporters (ST), were identified under Cr stress (p < 0.05). The results of this study help to accelerate the screening across M. sinensis genotypes for desirable traits under Cr stress and provide a platform for M. sinensis genetic improvement and molecular-marker-assisted breeding.