Variation and evolution of C:N ratio among different organs enable plants to adapt to N‐limited environments

Zhang, Jiahui; He, Nianpeng; Liu, Congcong; Xu, Li; Chen, Zhi; Li, Ying; Wang, Ruomeng; Yu, Guirui; Sun, Wei; Xiao, Chunwang; Chen, Han Y. H.; Reich, Peter B.

doi:10.1111/gcb.14973

Cited by 168 publications

(127 citation statements)

References 64 publications

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“…Alternatively, soils in this zone were characterized with higher C availability and SOC quality, which was supported or reflected by the latitudinal pattern of LOC contents (Fig. S2) and lower C:N ratios of leaves and roots in mid-latitudinal regions (Zhang et al, 2020), resulting in the higher Rm than other regions.…”

Section: Spatial Variations In Soil Microbial Respiration Along Latitmentioning

confidence: 73%

The continent-scale variations in soil microbial respiration in forest ecosystems: diverged pattern and mechanism

Tian¹,

Zhao²,

Liu³

et al. 2020

Preprint

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Globally rising soil microbial respiration (Rm) is a key process controlling the soil-to-atmosphere CO 2 flux, yet its spatial variation and underlying mechanism at different scales is still poorly understood. A novel experiment based on the annual mean temperature of soil origin sites along a 4,200 km north-south transect of China forests revealed a hump-shaped relationship between Rm and latitude with a latitudinal threshold of 32.5°N. Microbial variables were more important in shaping Rm' spatial variation at the continental scale than at the regional scales, but soil physicochemical property had comparably unique importance at different scales. Labile organic C was the most important factor in regulating the Rm's variation at the continent and in the latitude > 32.5°N region, but fungi biomass was the most important factor in the latitude < 32.5°N region. Overall, our findings suggest different controlling factors of Rm's variations on either side of the latitudinal threshold.

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Section: Spatial Variations In Soil Microbial Respiration Along Latitmentioning

confidence: 73%

The continent-scale variations in soil microbial respiration in forest ecosystems: diverged pattern and mechanism

Tian¹,

Zhao²,

Liu³

et al. 2020

Preprint

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“…Anisotropic growth relationships are often used to reflect differences in the ability of plants to absorb, transfer, distribute, and utilize nutrients during growth. They also reflect the change patterns of two attributes in an organism along with its growth and development process ( Zhang et al, 2019a ). Anisotropic growth analysis has been widely used to study the size dependence of different plant structures and processes ( Gould, 1966 ; Niklas et al, 2005 ; Zhang et al, 2021 ).…”

Section: Discussionmentioning

confidence: 99%

Effect of Environmental Stress on the Nutrient Stoichiometry of the Clonal Plant Phragmites australis in Inland Riparian Wetlands of Northwest China

et al. 2021

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Clonal plants play an important role in determining ecosystem properties such as community stability, species diversity and nutrient cycling. However, relatively little information is available about the stoichiometric characteristics of clonal plants and their drivers in inland riparian wetlands under strong environmental stress. In this manuscript, we studied the clonal plant Phragmites australis in an inland riparian wetland of Northwest China and compared its nutrient distribution and stoichiometry trade-offs as well as its responses to soil environmental factors in three different environments, namely, a wetland, a salt marsh, and a desert. We found that (1) P. australis could adapt to heterogeneous environments by changing its nutrient allocation strategies, as evidenced by the significant decrease in N and P concentrations, and significant increase in whole-plant C:P and N:P ratios from the wetland to the desert habitats. (2) P. australis adapted to stressful environments by changing its nutrient allocation patterns among different modules, showing a greater tendency to invest N and P in underground modules (rhizomes and roots) and an increase in the utilization efficiency of N and P in the leaves, and stems as environmental stress increased. (3) The C-N, C-P, and N:P-C in the whole plant and in each module showed significant anisotropic growth relationships in the three habitats (P < 0.05). (4) Soil water, pH and salt were the main factors limiting nutrient stoichiometry. The results of this study clarified the ecological adaptation mechanism of the clonal plant P. australis to heterogeneous environments and provided targeted protection strategies for inland riparian wetlands in Northwest China.

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“…Keyword: Physiological and biochemical indexes, enzyme activities, biomass, Salvia miltiorrhiza, mathematical model 1. Background Cabon (C) and nitrogen (N) are the the primary elements involved in the growth and development of plant [1]. Plants assimilate C and N at a certain ratio through C and N metabolism, and also consume part of C and N in the defense process.…”

Section: Discussionmentioning

confidence: 99%

Mathematical Model of Physiological and Biochemical Indexes to Plant Growth–Defense Tradeoff in Salvia Miltiorrhiza

Wang

Yan

et al. 2021

Preprint

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Background: Enzyme activities play a very important role in metabolism. Carbon (C) and nitrogen (N) are the two most basic elements for plant growth and development, and their mutual coupling makes C:N become an important index to explore plant element allocation and adaptation strategies. Although the key enzymes activity in carbon and nitrogen metabolism, and defense enzymes are often used to indexes of the physiological and biochemical characteristics of plants, the relationship between them and biomass still lacks understanding. In this paper, under the control condition, the biomass and 18 kinds of physiological and biochemical indexes were obtained through 24 groups experiments of the regenerated seedlings of Salvia miltiorrhiza by 9 endophytic fungi strains grafted. Results: The data were analyzed by descriptive statistical analysis, Lasso variable screening analysis and MLP neural network regression analysis. Results show that many physiological and biochemical indexes are related to biomass, and glutamine synthetase ( GS ),glutamate synthase ( GLS ), glutamate dehydroge nase ( GDH ), peroxidases (POD), catalase (CAT), soluble protein are the key factors which affect the biomass synthesis of Salvia miltiorrhiza . Conclusion: In this paper, it discusses the relationship between physiological and biochemical indexes and biomass in a comprehensive and systematic way by the framework of "Build-Design-Calculate-Test". Through rigorous logical reasoning process, the factors affecting the growth of Salvia miltiorrhiza are selected, and the mathematical model is established. It also provides a powerful tool for the comprehensive and systematic study of plant growth and the synthesis of effective components.

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Variation and evolution of C:N ratio among different organs enable plants to adapt to N‐limited environments

Cited by 168 publications

References 64 publications

The continent-scale variations in soil microbial respiration in forest ecosystems: diverged pattern and mechanism

The continent-scale variations in soil microbial respiration in forest ecosystems: diverged pattern and mechanism

Effect of Environmental Stress on the Nutrient Stoichiometry of the Clonal Plant Phragmites australis in Inland Riparian Wetlands of Northwest China

Mathematical Model of Physiological and Biochemical Indexes to Plant Growth–Defense Tradeoff in Salvia Miltiorrhiza

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