Εμφανίζονται 1 - 20 Αποτελέσματα από 33.934 για την αναζήτηση 'Urease deficiency*', χρόνος αναζήτησης: 1,44δλ Περιορισμός αποτελεσμάτων
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    Academic Journal

    Συγγραφείς: Chen H; Human Microbiome and Health Group, Department of Microbiology, Xiangya School of Basic Medical Sciences, Central South University, Changsha, China., Wang Z; Human Microbiome and Health Group, Department of Microbiology, Xiangya School of Basic Medical Sciences, Central South University, Changsha, China., Zhao Y; Human Microbiome and Health Group, Department of Microbiology, Xiangya School of Basic Medical Sciences, Central South University, Changsha, China., Yang W; Human Microbiome and Health Group, Department of Parasitology, Xiangya School of Basic Medical Sciences, Central South University, Changsha, China., Huang J; Human Microbiome and Health Group, Department of Parasitology, Xiangya School of Basic Medical Sciences, Central South University, Changsha, China., Yu Z; Human Microbiome and Health Group, Department of Microbiology, Xiangya School of Basic Medical Sciences, Central South University, Changsha, China. yuzheng@csu.edu.cn.

    Πηγή: Nature microbiology [Nat Microbiol] 2026 Apr; Vol. 11 (4), pp. 907-919. Date of Electronic Publication: 2026 Feb 20.

    Τύπος έκδοσης: Journal Article

    Στοιχεία περιοδικού: Publisher: Nature Publishing Group Country of Publication: England NLM ID: 101674869 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 2058-5276 (Electronic) Linking ISSN: 20585276 NLM ISO Abbreviation: Nat Microbiol Subsets: MEDLINE

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    Electronic Resource

    Additional Titles: Background and aims: Nickel (Ni) deficiency has been reported to occur in soybean (Glycine max) grown on leached tropical soils in Brazil. We aimed to determine whether an internal or external Ni supply can compensate for low Ni within the seed by assessing whether the amount of Ni in the seed whether the foliar-application of aqueous NiSO4 influenced the uptake of Ni by the leaf, the nutritional status of the plant, urease activity and growth. Methods: We used Ni-depleted seeds (<0.35 μg Ni per g) and Ni-sufficient seeds (11.1 μg Ni g−1) for hydroponic experiments. Seedlings were grown either with or without an external Ni supply (0 or 0.85 μM Ni in nutrient solution) and either with or without an internal Ni supply (with or cotyledons removed). In addition, we used synchrotron-based micro-X-ray fluorescence analysis to examine the distribution of foliar-applied Ni (50 and 100 mg L-1). Key results: Leaf Ni concentration and urease activity were both enhanced by increasing either the internal (cotyledon seed store) or external (solution) Ni supply. In addition, plants derived from Ni-depleted seed that received external Ni supply had 9.2% higher biomass relative to plants derived from Ni-sufficient seeds which received Ni. When foliar-applied, Ni accumulated in the pedicles of the trichomes within 15 minutes of application, and then moved to the vascular bundles before dispersing further into tissues within 3 hours. Conclusions: Trichomes are an important pathway for foliar Ni absorption in soybean, but there are still major knowledge gaps our understanding of the physiological function of trichomes in the uptake of metal ions from foliar micro-nutrient treatments.

    Πηγή: ISSN: 0032-079X

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    Electronic Resource

    Additional Titles: High-mountain areas often exhibit high soil heterogeneity, which allows for the close coexistence of plant species and communities with contrasting resource requirements. This study investigated the nutritional factors driving the mosaic distribution of Nardus stricta L. grasslands and chalk grasslands dominated by forbs in the subalpine southern Pyrenees (Spain). The concentrations of C, N, P, S, K, Ca and fiber fractions in herbage were analyzed in relation to soil nutrient availability; soil β-glucosidase, urease, phosphatase and arylsulfatase activities; and plant species and functional type compositions. The chalk grassland showed higher N:P ratios in herbage and higher enzyme demand for P relative to N in the soil, which indicates a greater limitation of P versus N compared to Nardus grassland. This limitation was related to the higher soil and plant Ca levels in the chalk grassland, where the calcareous bedrock lies close to the soil surface. In the Nardus grasslands, the alleviation of P limitation translated into increased productivity and the replacement of forbs with taller graminoids rich in structural carbohydrates, which was mirrored by greater β-D-glucosidase activity. The plant N:K and P:K ratios indicated potential K deficiency in both grasslands, which resulted from decreased uptake of K in competition with Ca, as indicated by the correlation between plant K and the soil K+:Ca2+ ratio. Our results highlight the effect of the heterogeneity of soil nutrient constraints, mediated by stoichiometry and dependent on microtopography, on the biodiversity of high-mountain ecosystems.

    Σύνδεσμος: http://zaguan.unizar.es/record/135929
    info:eu-repo/grantAgreement/ES/DGA/S51-23R

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    Academic Journal

    Συγγραφείς: Yamauchi R; Graduate School of Agriculture, University of Meiji, 1-1-1 Higashi-Mita, Tama-ku, Kawasaki, Kanagawa 214-8571, Japan. Electronic address: cf60128@meiji.ac.jp., Maguin E; INRA UMR1319 Micalis Allée de Vilvert Bat. 440, R-1, Pce 420, 78352 Jouy-en-Josas Cedex, Ile de France, France., Horiuchi H; Food Development Laboratories, R&D Division, Meiji Co., Ltd., 1-29-1 Nanakuni, Hachioji, Tokyo 192-0919, Japan., Hosokawa M; Chuo University of Junior and High School, 3-22-1 Nukuikitamachi, Koganei, Tokyo, 184-8575, Japan., Sasaki Y; Graduate School of Agriculture, University of Meiji, 1-1-1 Higashi-Mita, Tama-ku, Kawasaki, Kanagawa 214-8571, Japan.

    Πηγή: Journal of dairy science [J Dairy Sci] 2019 Feb; Vol. 102 (2), pp. 1033-1043. Date of Electronic Publication: 2018 Dec 26.

    Τύπος έκδοσης: Journal Article

    Στοιχεία περιοδικού: Publisher: American Dairy Science Association Country of Publication: United States NLM ID: 2985126R Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1525-3198 (Electronic) Linking ISSN: 00220302 NLM ISO Abbreviation: J Dairy Sci Subsets: MEDLINE

    Συνδεδεμένο Πλήρες Κείμενο
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    Academic Journal

    Συγγραφείς: Li M; State Key Laboratory of Resource Insects, Institute of Sericulture and Systems Biology, Southwest University, Chongqing400715, People's Republic of China., Liang J; State Key Laboratory of Resource Insects, Institute of Sericulture and Systems Biology, Southwest University, Chongqing400715, People's Republic of China., Lu H; State Key Laboratory of Resource Insects, Institute of Sericulture and Systems Biology, Southwest University, Chongqing400715, People's Republic of China., Liu H; State Key Laboratory of Resource Insects, Institute of Sericulture and Systems Biology, Southwest University, Chongqing400715, People's Republic of China., Chen L; State Key Laboratory of Resource Insects, Institute of Sericulture and Systems Biology, Southwest University, Chongqing400715, People's Republic of China., Chen K; State Key Laboratory of Resource Insects, Institute of Sericulture and Systems Biology, Southwest University, Chongqing400715, People's Republic of China., Zhang S; State Key Laboratory of Resource Insects, Institute of Sericulture and Systems Biology, Southwest University, Chongqing400715, People's Republic of China., He N; State Key Laboratory of Resource Insects, Institute of Sericulture and Systems Biology, Southwest University, Chongqing400715, People's Republic of China.

    Πηγή: Open biology [Open Biol] 2026 Feb 18; Vol. 16 (2).

    Τύπος έκδοσης: Journal Article

    Στοιχεία περιοδικού: Publisher: Royal Society Pub Country of Publication: England NLM ID: 101580419 Publication Model: Print Cited Medium: Internet ISSN: 2046-2441 (Electronic) Linking ISSN: 20462441 NLM ISO Abbreviation: Open Biol Subsets: MEDLINE

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    Academic Journal

    Συγγραφείς: Takeshita H; Department of Microbiology and Immunology, Nippon Medical School.; Department of Pediatrics, Nippon Medical School., Watanabe E; Department of Microbiology and Immunology, Nippon Medical School., Norose Y; Department of Microbiology and Immunology, Nippon Medical School., Ito Y; Department of Pediatrics, Nippon Medical School., Takahashi H; Department of Microbiology and Immunology, Nippon Medical School.

    Πηγή: Biomedical research (Tokyo, Japan) [Biomed Res] 2019; Vol. 40 (2), pp. 87-95.

    Τύπος έκδοσης: Journal Article

    Στοιχεία περιοδικού: Publisher: Biomedical Research Foundation Country of Publication: Japan NLM ID: 8100317 Publication Model: Print Cited Medium: Internet ISSN: 1880-313X (Electronic) Linking ISSN: 03886107 NLM ISO Abbreviation: Biomed Res