Plant nitrogen uptake preference and drivers in natural ecosystems at the global scale

New Phytologist, Год журнала: 2025, Номер unknown

Опубликована: Март 8, 2025

Summary Elucidating plant nitrogen (N) acquisition is crucial for understanding N strategies and ecosystem productivity. However, the variation in uptake preference its controlling factors on a global scale remain unclear. We conducted synthesis to explore patterns driving factors. Globally, average contributions of ammonium (NH 4 + ), nitrate (NO 3 − glycine total were 41.6 ± 1.1%, 32.8 1.2%, 25.6 0.9%, respectively. preferences differed significantly among climatic regions vegetation types. Soil NH was most preferred form by plants (sub)tropical regions, whereas NO higher high‐latitude than low‐latitude regions. Plant functional type one important preference, with nonwoody species broadleaf‐evergreen, conifer, shrub species. Organic lowest (sub)tropics lower that temperate alpine This study shows clear different influencing which can contribute accurate prediction constraints productivity soil carbon dynamics.

Язык: Английский

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Short-Term Fertilization with the Nitrogen-Fixing Bacterium (NFB) Kosakonia radicincitans GXGL-4A Agent Can Modify the Transcriptome Expression Profiling of Cucumber (Cucumis sativus L.) Root

Microorganisms, Год журнала: 2025, Номер 13(3), С. 506 - 506

Опубликована: Фев. 25, 2025

The application of nitrogen-fixing bacteria (NFB) as a biofertilizer can greatly reduce or even avoid environmental pollution caused by the excessive use chemical nitrogen fertilizers. To explore effect short-term fertilization GXGL-4A on expression functional genes in roots cucumber (Cucumis sativus L.) cultivar “Xintaimici”, this study used transcriptome sequencing technology combined with fluorescent quantitative RT-PCR (qRT-PCR) verification to compare gene transcription profiles GXGL-4A-treated and control (sterile-water-treated) groups. A total 418 differentially expressed (DEGs) were detected. levels Csa5G161290 Csa3G027720, which encode nitrate transporters, showed significant up-regulation (3.04- 2.27-fold, respectively) inoculated GXGL-4A. CsaV3_5G006200, encoding cytokinin dehydrogenase involved biosynthesis zeatin, CsaV3_1G011730, wound-responsive protein, CsaV3_6G015610, heat stress factor, significantly up-regulated at transcriptional level (p < 0.05). However, cycling CsaV3_3G036500, CsaV3_1g008910, CsaV3_3G018610, reductase, high-affinity transporter (NRT), ferredoxin-nitrite respectively, down-regulation Only KEGG pathway phenylpropanoid reached This contributes deeper understanding interaction between NFB plants provides theoretical guidance for development mature biological agent sustainable agricultural production under drought stress.

Язык: Английский

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Soil depth, rather than hydrological gradient, dominates uptake of water and nitrogen by Carex thunbergii in a wetland ecosystem

Environmental and Experimental Botany, Год журнала: 2025, Номер unknown, С. 106128 - 106128

Опубликована: Март 1, 2025

Язык: Английский

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Endophytic fungi enhance drought tolerance in Fagopyrum tataricum: Insights into flavonoid biosynthesis and photosynthetic pathways

Agricultural Water Management, Год журнала: 2025, Номер 313, С. 109496 - 109496

Опубликована: Апрель 19, 2025

Язык: Английский

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