ArticleJournal of experimental botany2013
Nitrogen metabolism of two contrasting poplar species during acclimation to limiting nitrogen availability.
Article in Journal of experimental botany, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 65 papers.
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65 citing papers in PubMed.
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- Effects of nitrate- and ammonium- nitrogen on anatomical and physiological responses of Catalpa bungei under full and partial root-zone drought.BMC plant biology · 2024Article
- Physiological response to low-nitrogen stress and comprehensive evaluation in four rice varieties.Photosynthetica · 2024Article
- Comparative transcriptomic and phenotypic analysis of monoclonal and polyclonalFrontiers in plant science · 2024Article
- Screening key sorghum germplasms for low-nitrogen tolerance at the seedling stage and identifying from the carbon and nitrogen metabolism.Frontiers in plant science · 2024Article
- Nitrogen Deposition Amplifies the Legacy Effects of Plant Invasion.Plants (Basel, Switzerland) · 2023Article
- Structure and Expression Analysis ofInternational journal of molecular sciences · 2023Article
- Interactions with microbial consortia have variable effects in organic carbon and production of exometabolites among genotypes ofPlant direct · 2023Article
- Transcriptomic and Physiological Analysis Reveals Genes Associated with Drought Stress Responses inPlants (Basel, Switzerland) · 2023Article
- Transcriptome Profiling and Chlorophyll Metabolic Pathway Analysis Reveal the Response ofPlants (Basel, Switzerland) · 2023Article
5 more citing papers are in PubMed but not listed here.
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6 authors.
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Abstract
To investigate N metabolism of two contrasting Populus species in acclimation to low N availability, saplings of slow-growing species (Populus popularis, Pp) and a fast-growing species (Populus alba × Populus glandulosa, Pg) were exposed to 10, 100, or 1000 μM NH4NO3. Despite greater root biomass and fine root surface area in Pp, lower net influxes of NH4(+) and NO3(-) at the root surface were detected in Pp compared to those in Pg, corresponding well to lower NH4(+) and NO3(-) content and total N concentration in Pp roots. Meanwhile, higher stable N isotope composition (δ(15)N) in roots and stronger responsiveness of transcriptional regulation of 18 genes involved in N metabolism were found in roots and leaves of Pp compared to those of Pg. These results indicate that the N metabolism of Pp is more sensitive to decreasing N availability than that of Pg. In both species, low N treatments decreased net influxes of NH4(+) and NO3(-), root NH4(+) and foliar NO3(-) content, root NR activities, total N concentration in roots and leaves, and transcript levels of most ammonium (AMTs) and nitrate (NRTs) transporter genes in leaves and genes involved in N assimilation in roots and leaves. Low N availability increased fine root surface area, foliar starch concentration, δ(15)N in roots and leaves, and transcript abundance of several AMTs (e.g. AMT1;2) and NRTs (e.g. NRT1;2 and NRT2;4B) in roots of both species. These data indicate that poplar species slow down processes of N acquisition and assimilation in acclimation to limiting N supply.
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