Driving factors of community-level leaf stoichiometry patterns in a typical temperate mountain meadow ecosystem of northern China

Zhang, Xiaolong; Qin, Hao; Zhang, Yinbo; Niu, Junpeng; Wang, Yongji; Shi, Lijiang

doi:10.3389/fpls.2023.1141765

Cited by 4 publications

(1 citation statement)

References 57 publications

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“…Alhagi sparsifolia and Karelinia caspia are the dominant species in arid and semi-arid regions, with excellent tolerance to drought, salinity, and barrenness [30,31]. Previous studies mainly focused on their fixation of nutrient elements, the comparison of their ecological stoichiometric characteristics, and the changes in plant functional traits under adversity stress [32]. However, there are fewer studies on their δ 13 C and nutrient elemental characteristics and the variations among organs.…”

Section: Introductionmentioning

confidence: 99%

Studies on the Correlation between δ13C and Nutrient Elements in Two Desert Plants

Zheng,

Wu,

Gong

et al. 2023

Forests

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Stable carbon isotopes (δ13C) and elemental stoichiometry characteristics are important ways to research the water and nutrient use strategies of plants. Investigating the variation patterns inof δ13C and the major nutrient elements in different organs of plants and the correlation among them can reveal the ecological strategies of desert plants in extreme arid environments. In this study, two typical desert plants, Alhagi sparsifolia and Karelinia caspia, were studied in the Tarim Basin. By analyzing the changes in δ13C, carbon (C), nitrogen (N), and phosphorus (P) and the ecological stoichiometry of their roots, stems, and leaves, the distribution patterns among different organs and their correlation with soil environmental factors were revealed. The results showed the following: (1) The δ13C of the two plants differed significantly among different organs (p < 0.01). The root and stem of Alhagi sparsifolia had significantly greater δ13C than the leave, while the δ13C of Karelinia caspia showed a root > stem > leaf gradient; (2) the C content in the leaves of the two plants was significantly lower than that of the root (p < 0.01), whereas the N content showed the opposite trend (p < 0.01); (3) the average N:P of Alhagi sparsifolia was >16.00, indicating it was mainly limited by P elements, while the average N:P of Karelinia caspia was <14.00, suggesting it was mainly limited by N elements; (4) in the root, stem and leave of Alhagi sparsifolia and Karelinia caspia, the N content and C:N and the P content and C:P showed a significantly negative correlation (p < 0.01), and δ13C was negatively correlated with C:P; (5) soil total phosphorus (TP) is an important soil environmental factor affecting δ13C and the nutrient elements in Alhagi sparsifolia and Karelinia caspia. This study demonstrates that Alhagi sparsifolia and Karelinia caspia are able to effectively coordinate and regulate their water, N, and P use strategies in response to environmental stress. These results can provide scientific reference for the evaluation of plant physiological and ecological adaptations for ecological conservation in arid areas.

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Section: Introductionmentioning

confidence: 99%

Studies on the Correlation between δ13C and Nutrient Elements in Two Desert Plants

Zheng,

Wu,

Gong

et al. 2023

Forests

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Elevational Patterns and Drivers of Leaf Carbon, Nitrogen, and Phosphorus Stoichiometry in an Alpine-Gorge Region on the Eastern Qinghai-Tibetan Plateau

Chen,

Liu

et al. 2024

J Soil Sci Plant Nutr

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Elemental and isotopic analysis of leaves predicts nitrogen-fixing phenotypes

Doby,

Siniscalchi,

Pajuelo

et al. 2024

Sci Rep

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Nitrogen (N)-fixing symbiosis is critical to terrestrial ecosystems, yet possession of this trait is known for few plant species. Broader presence of the symbiosis is often indirectly determined by phylogenetic relatedness to taxa investigated via manipulative experiments. This data gap may ultimately underestimate phylogenetic, spatial, and temporal variation in N-fixing symbiosis. Still needed are simpler field or collections-based approaches for inferring symbiotic status. N-fixing plants differ from non-N-fixing plants in elemental and isotopic composition, but previous investigations have not tested predictive accuracy using such proxies. Here we develop a regional field study and demonstrate a simple classification model for fixer status using nitrogen and carbon content measurements, and stable isotope ratios (δ15N and δ13C), from field-collected leaves. We used mixed models and classification approaches to demonstrate that N-fixing phenotypes can be used to predict symbiotic status; the best model required all predictors and was 80–94% accurate. Predictions were robust to environmental context variation, but we identified significant variation due to native vs. non-native (exotic) status and phylogenetic affinity. Surprisingly, N content—not δ15N—was the strongest predictor, suggesting that future efforts combine elemental and isotopic information. These results are valuable for understudied taxa and ecosystems, potentially allowing higher-throughput field-based N-fixer assessments.

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Driving factors of community-level leaf stoichiometry patterns in a typical temperate mountain meadow ecosystem of northern China

Cited by 4 publications

References 57 publications

Studies on the Correlation between δ13C and Nutrient Elements in Two Desert Plants

Studies on the Correlation between δ13C and Nutrient Elements in Two Desert Plants

Elevational Patterns and Drivers of Leaf Carbon, Nitrogen, and Phosphorus Stoichiometry in an Alpine-Gorge Region on the Eastern Qinghai-Tibetan Plateau

Elemental and isotopic analysis of leaves predicts nitrogen-fixing phenotypes

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