Clonal integration in Vallisneria natans alters growth and the rhizosphere microbial community of neighboring plants under heterogeneous conditions

Ma, Xiaowen; Yu, Weicheng; Tao, Min; Zhang, Chang; Zhang, Zhiqiang; Yu, Dan; Liu, Chunhua

doi:10.1007/s11104-022-05690-0

Cited by 7 publications

(3 citation statements)

References 51 publications

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“…Our results suggested that soil nutrient heterogeneity increased the biomass of P. australis , primarily by increasing the belowground biomass. This species allocated more root biomass to nutrient-rich patches compared to nutrient-poor patches, benefiting from clonal integration and the division of labor ( Day et al., 2003b ; Roiloa et al., 2014 ; You et al., 2014 ; Zhang et al., 2016 ; Wang et al., 2022 ; Ma et al., 2023 ). However, S. planiculumis did not show an increase in biomass in heterogeneous soil, indicating that the effects of heterogeneity on clonal plant growth are context-specific ( Kembel and Cahill, 2005 ).…”

Section: Discussionmentioning

confidence: 99%

Inferior plant competitor allocates more biomass to belowground as a result of greater competition for resources in heterogeneous habitats

Zhou,

Ma,

Jia

et al. 2023

Front. Plant Sci.

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Nutrient heterogeneity in soil widely exists in nature and can have significant impacts on plant growth, biomass allocation, and competitive interactions. However, limited research has been done to investigate the interspecific competitive intensity between two clonal species in a heterogeneous habitat. Therefore, this greenhouse experiment was conducted with two clonal species, Phragmites australis and Scirpus planiculumis, exposed to heterogeneous and homogeneous patches of soil nutrients at five different planting ratios (0:4, 1:3, 2:2, 3:1 and 4:0), to assess the effects of both soil heterogeneity and interspecific competition on plant growth. It was found that soil nutrient heterogeneity significantly enhanced P. australis’ interspecific competitive capacity and biomass by promoting a 20% increase in belowground allocation. Interestingly, the planting ratio did not affect the magnitude of this net outcome. In contrast, the superior competitor S. planiculumis did not exhibit significant change of growth indicators to the heterogeneous soil patches. These findings imply that the uncertainties associated with human-induced redistribution of plant species may lead to a shift in dominance from other species to those like P. australis, which have strong nutrient foraging abilities in response to heterogeneity in emergent wetland plant communities.

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Section: Discussionmentioning

confidence: 99%

Inferior plant competitor allocates more biomass to belowground as a result of greater competition for resources in heterogeneous habitats

Zhou,

Ma,

Jia

et al. 2023

Front. Plant Sci.

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“…Nitrogen is always heterogeneously distributed in the soil matrix, which increases the difficulty in the accessibility of N to plants. Therefore, clonal fragments may change the placement of ramets, ramet generation, and spacer length to acquire essential nutrients, leading to a strong contribution to rhizosphere N processes (Ma et al, 2023). In addition, the size of clonal fragment also contributes more greatly to the soil variables (such as inorganic N, DOC and DON) than clonal integration.…”

Section: Discussionmentioning

confidence: 99%

Influence of the size of clonal fragment on the nitrogen turnover processes in a bamboo ecosystem

Zou,

Li,

Song

2023

Front. Plant Sci.

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Different sizes of clonal fragments contain various number of ramets with different spacer lengths, which strongly affects the redistribution of photosynthetic assimilates. Although clonal integration significantly affects rhizosphere processes via microbial enzymes under heterogeneous conditions, the effects of clonal fragment size (ramet number and spacer length) on rhizosphere N turnover processes remain poorly understood. Here, we sampled clonal fragments of Phyllostachys bissetii with different ramet numbers and spacer lengths to determine the relative effects of clonal integration and fragment size on rhizosphere processes and resource availability. We found that clonal integration had positive effects on the C and N availability of shaded ramets in clonal fragments with different ramet numbers, owing to the large resource storage in the fragment. However, it only promoted the dissolved organic carbon of the shaded ramets in clonal fragments with different spacer lengths. Results of regression analyses indicated that the response ratios of the soil variables of the shaded ramets first increased when the spacer length was about less than 30 cm and then decreased when the spacer became longer (about >30 cm), suggesting a cost–benefit tradeoff in the fragment. The contribution of the size of clonal fragment to the soil N turnover process was higher than that of clonal integration, whereas its contribution to soil C availability had the opposite effect. These results further revealed the mechanism of the size of clonal fragment in affecting the rhizosphere processes of stressed ramets, which is critical for the adaptation of P. bissetii to stressed habitats and further bamboo ecosystem N turnover under climate change.

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“…Through the regulation of ramet system size, they strongly affect the effective utilization of their rhizosphere nutrients [19]. The ramet system also changes the position of ramets and the length of underground rhizomes to obtain the necessary nutrients [20], indicating the potential roles of the ramet system's size and structure in adapting to habitats. This study found that in bamboo forests, as the branching grade increased, the average length of bamboo rhizomes, the number of lateral buds and Ra branches (highest in different branching types), and the distribution of RT branches (highest in different branching positions) showed a trend of first increasing and then decreasing, clearly presenting a structural feature of "larger in the middle and smaller at both ends".…”

Section: Existence Form Of Bamboo Ramet Systemmentioning

confidence: 99%

Growth Characteristics of Ramet System in Phyllostachys praecox Forest under Mulch Management

Gao,

Wen,

et al. 2024

Plants

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The ramet system is a typical structural type in the life history of clonal plants. This massive structure is formed by many similar ramets connected by underground rhizomes, which are independent and mutually influential. Therefore, the ramet system is unique to bamboo forests, and its role in the construction, maintenance, and productivity of bamboo populations is irreplaceable. Mulch management is a high-level cultivation model for bamboo forests that is used to cultivate bamboo shoots. However, the basic conditions of bamboo ramet systems in this managed model are poorly understood. This study analyzed the underground rhizome morphology, bud bank, and branching of bamboo ramets in a Phyllostachys praecox C.D. Chu et C.S. Chao ‘Prevernalis’ forest to explore the growth patterns of bamboo ramets in high-level management fields. In mulched bamboo forests, the bamboo rhizomes, distributed in intermediate positions of the bamboo ramet system, were long with many lateral buds and branches, and those at the initial and distal ends were short with few lateral buds and branches. The initial end of the ramet system reduced the ramet system, the intermediate part expanded the ramet system, and the distal end promoted ramet system regeneration. Owing to the continuous reduction, expansion, and renewal of ramet systems, the bamboo rhizome system demonstrates mobility and adaptability. This study found that a higher level of bamboo forest management increased the possibility of artificial fragmentation of the ramet system and that improving the efficiency of the ramet system was beneficial for maintaining its high vitality. Thus, this study provides a crucial reference for guiding the precise regulation of bamboo ramet systems in artificial bamboo forests.

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Clonal integration in Vallisneria natans alters growth and the rhizosphere microbial community of neighboring plants under heterogeneous conditions

Cited by 7 publications

References 51 publications

Inferior plant competitor allocates more biomass to belowground as a result of greater competition for resources in heterogeneous habitats

Inferior plant competitor allocates more biomass to belowground as a result of greater competition for resources in heterogeneous habitats

Influence of the size of clonal fragment on the nitrogen turnover processes in a bamboo ecosystem

Growth Characteristics of Ramet System in Phyllostachys praecox Forest under Mulch Management

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