N‐P utilization of<i>Acer mono</i>leaves at different life history stages across altitudinal gradients

Song, Zhaopeng; Liu, Yanhong; Su, Haijun; Hou, Junbo

doi:10.1002/ece3.5945

Cited by 9 publications

(5 citation statements)

References 67 publications

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“…This may be because pseudohalophytes increase their salt tolerance through the compensatory growth of roots [3], and reduced C content is transported up leaves by pseudohalophytes; thus, leaf C was positively correlated with soil C. There was no significant difference in soil N and P contents among the different functional groups of halophyte shrubs, but the utilization and consumption strategies of nutrient elements in different functional groups of halophyte shrubs were different [30]. This indicates that the ecological stoichiometric characteristics of desert saline shrub leaves are not directly determined by the characteristics of soil nutrient contents, but are related to their own genetic characteristics, which reflects the unique adaptation mechanism of different desert halophyte shrubs to habitats [50], consistent with the results of Luo et al (2017) [51] and Song et al (2020) [52]. Under soil moisture-and nutrient-scarce conditions, Xinjiang desert halophyte shrubs have formed their own unique stoichiometric characteristics and physiological ecology, reflecting the relatively stable adaptability of desert saline shrubs to extreme environments [16].…”

Section: Response Of Desert Halophyte Shrubs' Stoichiometry To Soil F...supporting

confidence: 79%

Leaf Stoichiometry of Halophyte Shrubs and Its Relationship with Soil Factors in the Xinjiang Desert

Luo

Lian

Gong

et al. 2022

Forests

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Desert halophytes are a special plant group widely distributed in desert ecosystems. Studying their ecological stoichiometric characteristics is helpful for understanding their nutrient utilization characteristics and survival strategies. In this study, three functional groups of halophyte shrubs (euhalophytes, pseudohalophytes, and secretohalophytes) were studied in the Xinjiang desert, and the ecological stoichiometric characteristics of their leaves and their relationships with soil factors were evaluated. The results showed that the C content in secretohalophytes (442.27 ± 3.08 mg g−1) was significantly higher than that in the other functional groups (p < 0.05). The N and P contents in euhalophytes (22.17 ± 0.49 mg g−1 and 1.35 ± 0.04 mg g−1, respectively) were significantly higher than those in halophytes (p < 0.05). The N/P results showed that the growth rates of euhalophytes and pseudohalophytes were more susceptible to P limitation, whereas that of secretohalophytes was more susceptible to both N and P limitations, indicating that there were differences in nutrient characteristics among different functional groups. The results of the redundancy analysis showed that the leaf C, N, and P contents of euhalophytes were most affected by electrical conductivity (EC), whereas those of pseudohalophytes and secretohalophytes were most affected by the soil C content, indicating that different functional groups of halophyte shrubs had different responses to soil factors. The results of this study revealed the nutrient utilization characteristics of different functional groups of halophyte shrubs in the Xinjiang desert and their response and adaptation mechanisms to soil factors, thereby providing a basis for desert ecosystem management.

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Section: Response Of Desert Halophyte Shrubs' Stoichiometry To Soil F...supporting

confidence: 79%

Leaf Stoichiometry of Halophyte Shrubs and Its Relationship with Soil Factors in the Xinjiang Desert

Luo

Lian

Gong

et al. 2022

Forests

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“…Some studies have also found that N does not change with tree height or age (Day et al 2001;Niinemets 2002). P showed a significant downward trend with increasing ontogenetic stage; this finding is surprising because it seems to be inconsistent with previous observations (Palow and Kitajima 2012;Song et al 2019). This may be the result of tree size altering the pattern of P allocation (Niinemets and Kull 2003).…”

Section: Variation In Leaf Traits With Ontogenetic Stagementioning

confidence: 70%

“…The standardized major axis method was used to explore the effects of ontogenetic stage and leaf age on trait-trait relationships. We found that LMA and LDMC increased significantly and N and P decreased significantly 1 2013; Damián et al 2018;Song et al 2019). Thus, tree age or ontogenetic stage may be an important cause of trait variation (Steppe et al 2011;Kuusk et al 2018).…”

Section: Introductionmentioning

confidence: 68%

Effects of ontogenetic stage and leaf age on leaf functional traits and the relationships between traits in Pinus koraiensis

Jin

Liu

2021

J. For. Res.

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Investigating the effects of ontogenetic stage and leaf age on leaf traits is important for understanding the utilization and distribution of resources in the process of plant growth. However, few studies have been conducted to show how traits and trait-trait relationships change across a range of ontogenetic stage and leaf age for evergreen coniferous species. We divided 67 Pinus koraiensis Sieb. et Zucc. of various sizes (0.3–100 cm diameter at breast height, DBH) into four ontogenetic stages, i.e., young trees, middle-aged trees, mature trees and over-mature trees, and measured the leaf mass per area (LMA), leaf dry matter content (LDMC), and mass-based leaf nitrogen content (N) and phosphorus content (P) of each leaf age group for each sampled tree. One-way analysis of variance (ANOVA) was used to describe the variation in leaf traits by ontogenetic stage and leaf age. The standardized major axis method was used to explore the effects of ontogenetic stage and leaf age on trait-trait relationships. We found that LMA and LDMC increased significantly and N and P decreased significantly with increases in the ontogenetic stage and leaf age. Most trait-trait relationships were consistent with the leaf economic spectrum (LES) at a global scale. Among them, leaf N content and LDMC showed a significant negative correlation, leaf N and P contents showed a significant positive correlation, and the absolute value of the slopes of the trait-trait relationships showed a gradually increasing trend with an increasing ontogenetic stage. LMA and LDMC showed a significant positive correlation, and the slopes of the trait-trait relationships showed a gradually decreasing trend with leaf age. Additionally, there were no significant relationships between leaf N content and LMA in most groups, which is contrary to the expectation of the LES. Overall, in the early ontogenetic stages and leaf ages, the leaf traits tend to be related to a "low investment-quick returns" resource strategy. In contrast, in the late ontogenetic stages and leaf ages, they tend to be related to a "high investment-slow returns" resource strategy. Our results reflect the optimal allocation of resources in Pinus koraiensis according to its functional needs during tree and leaf ontogeny.

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“…In most studies, leaf maturity affected carbon access and allocation, leading to differences in carbohydrate content (Damian et al, 2018; Zhang et al, 2018; Song et al, 2020). The SEM results showed that leaf maturity had a significant positive effect on carbohydrate content, suggesting that the accumulation of carbohydrates was positively related to leaf senescence.…”

Section: Discussionmentioning

confidence: 99%

Drought responses and carbon allocation strategies of poplar with different leaf maturity

Yao,

Xia,

Yang

et al. 2024

Physiologia Plantarum

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Leaf characteristics can reflect the adaptation of trees to drought stress. However, the effect of leaf maturity on drought stress has been neglected, leading to uncertainty in inferring individual tree responses to drought from leaves. The allocation strategy of photosynthetic carbon between leaf organs (fully expanded young and old leaves) under drought stress remains unclear. Poplar is a diverse and widespread tree species in arid and semi‐arid regions. Here, three poplar genotypes (Populus cathayana, P. × euramericana ‘Nanlin 895’, and P. alba × P. tremula var. glandulosa) were selected and exposed to different watering regimes. The responses and carbon allocation strategies of leaves with different maturity to drought were investigated using a combination of leaf traits and 13C pulse labelling technique. The results showed that (1) fully expanded young leaves had better osmotic regulation and antioxidant capacity than aged leaves under drought stress. (2) Aged leaves acted as a carbon source during water deficit, where their photosynthetic products were transferred and supplied to upper young leaves to promote stronger photosynthesis in young leaves to acquire resources for tree growth. This study highlights that the effect of leaf maturity should be considered in the future when investigating the effects of drought on woody plants, especially for continuously growing tree species. Therefore, our study not only demonstrates the existence of leaf‐age‐dependent responses to drought in poplar but also provides new insights into carbon allocation at the leaf level.

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N‐P utilization ofAcer monoleaves at different life history stages across altitudinal gradients

Cited by 9 publications

References 67 publications

Leaf Stoichiometry of Halophyte Shrubs and Its Relationship with Soil Factors in the Xinjiang Desert

Leaf Stoichiometry of Halophyte Shrubs and Its Relationship with Soil Factors in the Xinjiang Desert

Effects of ontogenetic stage and leaf age on leaf functional traits and the relationships between traits in Pinus koraiensis

Drought responses and carbon allocation strategies of poplar with different leaf maturity

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