Shifting of the first-order root foraging strategies of Chinese fir (Cunninghamia lanceolata) under varied environmental conditions

Liao, Yingchun; Fan, Houbao; Wei, Xiaohua; Wang, Huimin; Shen, Fangfan; Liang, Hongbin; Li, Yanyan; Fang, Huanying; Huang, Rongzhen

doi:10.1007/s00468-023-02394-5

Cited by 4 publications

(7 citation statements)

References 74 publications

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“…The diameter of AFRs for C. lanceolata increased, while RN, BR, and BI decreased after nutrient addition; the opposite occurred for Q. acutissima. This indicated the shifts of different root foraging strategies after nutrient addition with more acquisitive roots for Q. acutissima and more conservative roots for C. lanceolata, which was consistent with previous studies [3,13,14,54]. Typically, an increase in the branching ratio and root nitrogen (N) concentration indicates a shift toward an acquisitive strategy, as pointed out by Weemstra et al [13] and Li et al [13].…”

Section: Response Of Fine Root Functional Traits To Nutrient Additionsupporting

confidence: 89%

“…Root foraging strategies can shift between a conservative and an acquisitive strategy by adjusting functional root traits [3,53]. In the present study, although root biomass and length growth responded similarly to nutrient addition in both tree species, functional root traits responded differently (Figures 4 and 5).…”

Section: Response Of Fine Root Functional Traits To Nutrient Additionmentioning

confidence: 50%

“…Plant nutrient acquisition can be represented by adjustments in fine root proliferation and a series of interrelated root functional traits including morphology, architecture, nutrient concentration, and mycorrhizal colonization [1][2][3][4]. The diverse trade-offs among fine root traits may lead to a range of distinct resource-foraging strategies [5], which may vary depending on the tree species, nutrient type (organic vs. inorganic nutrients), and fine root traits (thicker vs. thinner roots) [5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

“…In response to variations in nutrient supply, phenotypic modifications in root biomass allocation were 2.5 times more significant than in SRL in modulating the relative length of roots in plants exploring soil [21]. Currently, most previous studies on nutrient acquisition strategies have focused on the plasticity of root morphological and architectural traits [3,10,23], while less attention has been focused on biomass plasticity and its contribution to nutrient acquisition. The responses of fine root proliferation to changes in soil nutrients remain inconsistent.…”

Section: Introductionmentioning

confidence: 99%

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Differences in Fine Root Foraging Traits of Two Dominant Tree Species (Cunninghamia lanceolata and Quercus acutissima) in Subtropical Forests

Xu,

Tan,

Shao

et al. 2024

Forests

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Root biomass and length growth, functional traits, and their responses to soil nutrient availability are crucial for resource acquisition under environmental change. Previous studies have focused on the response of root morphological, architectural, and chemical traits to fertilization, while less attention has been given to root biomass and length growth, as well as mycorrhizal symbiosis, impeding a full understanding of root resource acquisition strategies. Here, using a nutrient addition experiment (control, inorganic, and organic nutrients), we explored the responses of function-based root (absorptive fine roots [AFRs] versus transport fine roots [TFRs]) growth, functional traits (morphological, architectural, and chemical traits), and mycorrhizal colonization of C. lanceolat and Q. acutissim, which are the dominant tree species in subtropical China. The results showed that the fine root biomass and total root length of AFRs for both tree species basically decreased significantly after nutrient addition, but TFRs responded less sensitively than AFRs. Nutrient addition significantly increased the mycorrhizal colonization rate in C. lanceolata but decreased it in Q. acutissima. The diameter of AFRs for C. lanceolata increased significantly, while the branch ratio and branch intensity decreased significantly in both inorganic nutrients (NPK) and organic nutrients (F); however, the opposite response pattern occurred for Q. acutissima. Fine root biomass, total root length, and root nutrient concentration exhibited the most plastic responses to changes in nutrient availability. The magnitude of the plastic response of fine root traits was slightly higher in the NPK treatment than in the F treatment. Our findings suggest that the responses of fine root traits and mycorrhizal fungi to nutrient addition were species-specific: C. lanceolata depended on mycorrhizal fungi for resource acquisition, while Q. acutissima could acquire soil nutrient resources by increasing root branching. The contrasting nutrient acquisition strategies between tree species may facilitate plant species coexistence and distribution under soil nutrient change. Fine root biomass and total root length emerged as more pivotal indicators for nutrient acquisition strategies compared to morphological traits.

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Section: Response Of Fine Root Functional Traits To Nutrient Additionsupporting

confidence: 89%

Section: Response Of Fine Root Functional Traits To Nutrient Additionmentioning

confidence: 50%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Differences in Fine Root Foraging Traits of Two Dominant Tree Species (Cunninghamia lanceolata and Quercus acutissima) in Subtropical Forests

Xu,

Tan,

Shao

et al. 2024

Forests

View full text Add to dashboard Cite

show abstract

“…An increase in RTD indicates a longer root life span [59], and RTD is inherently linked to SRL [27,60]. The co-variations in RTD and SRL can contribute to enhancing root nutrient acquisition under N application and better adapting to N application [61][62][63]. However, RD was not affected by N application (Figure 4a), as observed in similar studies, suggesting that RD is a relatively conservative and insensitive trait to N application [17,64].…”

Section: Root Functional Traits Affected By N Applicationsupporting

confidence: 56%

The Impact of Nitrogen Application on Leaf and Root Functional Traits of Davidia involucrata Saplings

Liu,

Wen,

et al. 2023

Forests

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Understanding the effects of nitrogen (N) deposition on plant functional traits can provide insights into their adaptation strategies. We conducted an N application experiment (0, 5, 10, 15 g N m−2) with potted saplings of the endangered species Davidia involucrata and examined 24 functional traits of both leaves and roots. We found that N application increased the leaf morphological traits, except for a significant decrease (by 19.2%–27.0%) in specific leaf area (SLA). Compared to the control treatment, N application significantly increased the specific root surface area (SRA), specific root length (SRL), and root tissue density (RTD) by 9.2%–20.1%, 20.2%–47.9%, and 30.8%–46.4%, respectively, while root diameter was conservative and insensitive to N application. Additionally, N application had contrasting effects between leaf and root carbon, N, and phosphorus contents and their stoichiometry. SRL, SRA, and RTD were positively correlated with most leaf photosynthetic traits, but negatively correlated with SLA. Moreover, root biomass and root chemical traits were also tightly correlated with leaf photosynthetic traits and chemical traits. These results suggest that N application may trigger a resource-conservative strategy for leaves but a nutrient-acquisitive strategy for roots. Future N deposition combined with other practices, such as simultaneous P fertilizer application, can be effective for the scientific conservation of D. involucrata populations in their natural habitats.

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Seasonal changes and spatial distribution of citrus fine roots in different rootstocks

Zheng,

Gao,

Luo

et al. 2024

Scientia Horticulturae

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Shifting of the first-order root foraging strategies of Chinese fir (Cunninghamia lanceolata) under varied environmental conditions

Cited by 4 publications

References 74 publications

Differences in Fine Root Foraging Traits of Two Dominant Tree Species (Cunninghamia lanceolata and Quercus acutissima) in Subtropical Forests

Differences in Fine Root Foraging Traits of Two Dominant Tree Species (Cunninghamia lanceolata and Quercus acutissima) in Subtropical Forests

The Impact of Nitrogen Application on Leaf and Root Functional Traits of Davidia involucrata Saplings

Seasonal changes and spatial distribution of citrus fine roots in different rootstocks

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