Understanding the relationship between biomass production and water use of Populus tomentosa trees throughout an entire short-rotation

Li, Doudou; Liu, Jinqiang; Verhoef, Anne; Xi, Benye; Hernández‐Santana, Virginia

doi:10.1016/j.agwat.2020.106710

Cited by 18 publications

(12 citation statements)

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“…had much more influence on it than the control of genes ( Weemstra et al., 2017 ; Brunner et al., 2019 ; He et al., 2022 ; Lu et al., 2022 ). Fine roots can enhance the absorption of environmental resources by increasing biomass or improve the absorption and utilization efficiency of environmental resources by changing the morphological characteristics of fine roots ( Li et al., 2021 ). Many studies have shown that soil’s physical and chemical properties were essential factors affecting the morphology and growth of fine roots of plants ( He et al., 2022 ; Zou et al., 2022 ).…”

Section: Discussionmentioning

confidence: 99%

“…This analysis was used to determine which factors affected fine root characteristics, biomass, and gypenosides content, and whether the relationship between them was a positive or negative response ( He et al., 2022 ). Relative importance metrics of soil predictors of fine root morphological characteristics and fine root morphological characteristics of biomass, and gypenosides content were calculated using the R- package relaimpo ( Dang et al., 2020 ; Li et al., 2021 ). We calculated relative importance using the LMG (Lindeman, Merenda, and Gold) method that calculates the R 2 contribution averaged over orderings among regressors.…”

Section: Methodsmentioning

confidence: 99%

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Response mechanism of growth and gypenosides content for Gynostemma longipes cultivated at two altitude habitats to fine root morphological characteristics

et al. 2023

Front. Plant Sci.

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IntroductionFine roots are the critical functional organs of plants to absorb water and nutrients from the soil environment, while the relation between fine root morphological characteristics and yield & quality has received less attention for medicinal plants.MethodsTherefore, we investigated the relationship between fine root morphological characteristics and biomass & gypenosides content. We explored the primary environmental drivers of fine root indicators for Gynostemma longipes from three provenances cultivated at two altitude habitats.ResultsAt the end of the growing season, compared with the low-altitude habitat, the underground biomass of G. longipes in the high-altitude habitat increased significantly by 200%~290% for all three provenances. The response of gypenosides content to different altitude habitats varied with provenance and plant organs. The biomass of G. longipes strongly depended on the fine root characteristic indicators (P < 0.001), fine root length density, and fine root surface area. Our results also showed that the harvest yield of G. longipes could be effectively increased by promoting the growth of fine roots per unit leaf weight (P < 0.001, R2 = 0.63). Both fine root length density and fine root surface area had strong positive correlations with soil nutrient factors (R2 > 0.55) and a strong negative correlation with soil pH (R2 > 0.48). In a word, the growth of G. longipes is strongly controlled by the fine root morphological characteristics through the response of fine roots to soil nutrient factors and pH.DiscussionOur findings will help to deepen the understanding of the root ecophysiological basis driven by soil factors for the growth and secondary metabolites formation of G. longipes and other medicinal plants under changing habitat conditions. In future research, we should investigate how environmental factors drive plant morphological characteristics (e.g., fine roots) to affect the growth & quality of medicinal plants over a longer time scale.

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Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Response mechanism of growth and gypenosides content for Gynostemma longipes cultivated at two altitude habitats to fine root morphological characteristics

et al. 2023

Front. Plant Sci.

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“…Although the deep soil layer has a higher VWC, the energy required to take up water from the deep layer is greater than that of the upper layers [47,48]. Thus, the trees extracted shallow soil water to avoid excessive energy consumption through physiological adjustments [49][50][51]. In the middle and late wet season, plants water uptake depth shifted from shallow to deeper layers.…”

Section: Water Uptake Of Tree Species In Two Habitatsmentioning

confidence: 99%

Water Uptake Pattern by Coniferous Forests in Two Habitats Linked to Precipitation Changes in Subtropical Monsoon Climate Region, China

Jia

Chen

Jia

et al. 2022

Forests

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Variations in precipitation patterns under climate changes influence water availability, which has important implications for plants’ water use and the sustainability of vegetation. However, the water uptake patterns of the main forest species under different temporal spatial conditions of water availability remain poorly understood, especially in areas of high temporal spatial heterogeneity, such as the subtropical monsoon climate region of China. We investigated the water uptake patterns and physiological factors of the most widespread and coniferous forest species, Cunninghamia lanceolata L. and Pinus massoniana L., in the early wet season with short drought (NP), high antecedent precipitation (HP), and low antecedent precipitation (LP), as well as in the early dry season (DP), in edaphic and rocky habitats. The results showed that the two species mainly absorbed soil water from shallow layers, even in the short drought period in the wet season and switched to deeper layers in the early dry season in both habitats. It was noted that the trees utilized deep layers water in edaphic habitats when the antecedent rainfall was high. The two species showed no significant differences in water uptake depth, but exhibited notably distinct leaf water potential behavior. C. lanceolata maintained less negative predawn and midday water potential, whereas P. massoniana showed higher diurnal water potential ranges. Moreover, the water potential of P. massoniana was negatively associated with the antecedent precipitation amount. These results indicate that for co-existing species in these communities, there is significant eco-physiological niche segregation but no eco-hydrological segregation. For tree species in two habitats, the water uptake depth was influenced by the avaliable soil water but the physiological factors were unchanged, and were determined by the species’ genes. Furthermore, during the long drought in the growing season, we observed probable divergent responses of C. lanceolata and P. massoniana, such as growth restriction for the former and hydraulic failure for the latter. However, when the precipitation was heavy and long, these natural species were able to increase the ecohydrological linkages between the ecosystem and the deep-layer system in this edaphic habitat.

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“…Although the deep soil layer has higher VWC, the energy required to take up water from the deep layer is greater than that of the upper layers (Liu et al, 2020a;Williams and Ehleringer, 2000). Thus, the trees extracted shallow soil water to relieve excessive energy consumption through physiological adjustments (Li et al, 2021;Moreno-Gutiérrez et al, 2012;Renninger et al, 2014). Previous studies showed that the plant species adjusted their hydraulic strategies, such as diurnal ranges of water potential, water use efficiency, in response of the environment changes (Hochberg et al, 2018;Liu et al, 2012;Nie et al, 2019a).…”

Section: Water Uptake Of Tree Species In Two Habitatsmentioning

confidence: 99%

Water Use Characteristics of the Common Tree Species in Rock-dominated and Thin-soil Environments in Subtropical Monsoon Climate Region

Jia

Yan

et al. 2021

Preprint

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Variations in precipitation pattern under climate changes influence water availability that have important implications for plants water use and vegetation sustainability. However, the water use characteristic of the main tree species under different temporal-spatial of water availability remain poorly understood, especially in high temporal-spatial heterogeneity area, such as subtropical monsoon climate region of China. We investigated water use characteristics of the most widely and common natural trees, Mallotus philippensis and Celtis biondii , in edaphic and rocky habitats. We measured the δD and δ 18 O values of xylem and soil water and water potential of plant leaves during the wet season in 2020. The results showed that the two species mainly absorbed soil water from shallow layers and switched for deeper layers during the late of the wet season in both habitats. But the plant water sources were different in edaphic and rocky habitats when the antecedent precipitation was much high, deep layers soil water in the former and still shallow layers in the latter. The two species had no significant differences in water uptake depth, but notably distinction in the diurnal water potential ranges. M. philippensis maintained less negative predawn and midday water potential, whereas C. biondii showed higher diurnal water potential ranges. Besides, the water potential of C. biondii were negatively associated with antecedent precipitation amount. These results indicate that there is significant eco-physiological niche segregation but no ecohydrological segregation co-existing species in communities. Besides, antecedent precipitation amount and habitat differences were the main factors influencing the plant water uptake depth. While the relationship between leaf physiological traits and water availability was affected by the species types, rather than the habitats. Furthermore, during the long drought in growing season, there are probable divergent responses of M. philippensis and C. biondii , such as growth restriction and hydraulic failure. But when the precipitation is heavy and long, these natural species could increase the ecohydrological linkages between ecosystem and the deep-layer system in edaphic habitat.

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Understanding the relationship between biomass production and water use of Populus tomentosa trees throughout an entire short-rotation

Cited by 18 publications

References 50 publications

Response mechanism of growth and gypenosides content for Gynostemma longipes cultivated at two altitude habitats to fine root morphological characteristics

Response mechanism of growth and gypenosides content for Gynostemma longipes cultivated at two altitude habitats to fine root morphological characteristics

Water Uptake Pattern by Coniferous Forests in Two Habitats Linked to Precipitation Changes in Subtropical Monsoon Climate Region, China

Water Use Characteristics of the Common Tree Species in Rock-dominated and Thin-soil Environments in Subtropical Monsoon Climate Region

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