Global leaf sulfur stoichiometry and the relationships with nitrogen and phosphorus: phylogeny, growth form and environmental controls

Proceedings of the Royal Society B Biological Sciences, Год журнала: 2024, Номер 291(2027)

Опубликована: Июль 23, 2024

Sulfur (S) is an essential bioelement with vital roles in serving regulatory and catalytic functions tightly coupled N P plants. However, globally stoichiometric patterns of leaf S its relationships to are less well studied. We compiled 31 939 records leaf-based data for 2600 plant species across 6652 sites worldwide. All were divided into different phylogenetic taxa growth forms. Standard major axis analysis was employed fit the bivariate element relationships. A linear mixed-effect model a multiple-regression used partition variations bioelements phylogeny environments, then estimate importance environmental variables. Global geometric mean S, concentrations 1.44, 15.70 1.27 mg g

Язык: Английский

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Effects of nitrogen and water addition on leaf nitrogen and phosphorus stoichiometry of the dominant species in an <i>Artemisia ordosica</i> community

Chinese Journal of Plant Ecology, Год журнала: 2024, Номер 48(5), С. 590 - 600

Опубликована: Янв. 1, 2024

Aims Water and nitrogen (N) availability are two of crucial factors affecting the growth desert plants, sensitive to global climate change.With increasing N deposition precipitation, understanding responses leaf phosphorus (P) stoichiometry dominant species in sandy semi-shrub community could provide insights into adaptive strategies sand-fixing plants Mau Us Sandy Land.Methods An experiment water addition was conducted an Artemisia ordosica southern edge Land.Soil available P concentrations, soil N:P, corresponding homeostasis index A. Leymus secalinus were measured.Important findings (1) Soil identity jointly influenced response concentration, N:P L. addition, concentration showed different treatments.(2) Both higher stoichiometric homoeostasis indices for than N, which closely related fact that both N-limited.(3) The relatively those secalinus, adopted more conservative nutrient utilization strategies, while flexible strategies.Therefore, competitive arid infertile environments.Under scenarios

Язык: Английский

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Effects of increased precipitation on C, N and P stoichiometry at different growth stages of a cold desert annual

Global Ecology and Conservation, Год журнала: 2022, Номер 37, С. e02158 - e02158

Опубликована: Май 17, 2022

Plant C, N and P can reflect plant strategies of nutrient utilization allocation. Precipitation is a key factor affecting uptake especially in arid semiarid regions, it predicted to increase the cold deserts Northwest China due climate change. However, balance stoichiometry annual plants at different growth stages response increased precipitation not known. Thus, we performed an experiment on grass Eremopyrum distans Gurbantunggut Desert determine effect allocation stages. In control, organ C concentration was relatively stable during life cycle, but leaf root vegetative stage; culm decreased then with growth. Increased significantly C:N C:P ratios stage, N:P lower than 14 whole stage. could improve resorption efficiency cope reproduction allocation, nutrients are more sensitive precipitation. These results indicate that absorption for reproductive E. distans, system plays crucially important role influence under varied environment.

Язык: Английский

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Stoichiometric Characteristics of Abies georgei var. smithii Plants in Southeast Tibet

Sustainability, Год журнала: 2023, Номер 15(11), С. 8458 - 8458

Опубликована: Май 23, 2023

In order to elucidate the adaptation mechanisms of stoichiometric characteristics Abies georgei var. smithii in southeastern Tibet different habitats, spatial and temporal dynamics nutrient contents ratios among leaf, branch, stem, root organs were analyzed on Sejila Mountain at elevations (3500 m, 3900 4300 m). The results show that (1) C K fir did not change significantly with increasing elevation same season, while N P showed an overall trend elevation, being highest leaves. distribution was leaves > branches roots stem; content each organ stem. (2) At seasons, a similar convergence terms storage utilization strategies, more nutrients optimally allocated between assimilated stored alpine which represents “trade-off” strategy. (3) Compared findings global-scale studies, this study area has low N, P, contents, its growth is limited by both P. Due physiological balance constraints, N-limited elements plants relatively stable, line “limiting element stability hypothesis”. (4) Principal component analysis influence environmental factors had scale effect, demonstrated increased accumulation when subjected stress, promoted domestication plant, enabling it good capacity strategies even high elevation; thus, become pioneer tree species elevations. This research work shows resilient smithiir led differences uptake use efficiency patterns altitudinal gradients, adapting habitat changes adjusting strategy habitats.

Язык: Английский

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Helophytes adapt to water and N-enrichment stresses by adjusting and coordinating stoichiometry characteristics in main organs

The Science of The Total Environment, Год журнала: 2023, Номер 898, С. 165538 - 165538

Опубликована: Июль 14, 2023

Язык: Английский

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