Burial depth and diameter of the rhizome fragments affect the regenerative capacity of a clonal shrub

Luo, Wenjin; Zhao, Wenzhi

doi:10.1016/j.ecocom.2015.05.004

Cited by 21 publications

(22 citation statements)

References 44 publications

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“…One possible explanation is that ramets in stabilized sand dunes were too deeply buried by sand and unable to break through to the surface. This result is consistent with studies on Calligonum arborescens , where particular sand burial depth was an essential prerequisite for rhizomes to survive (Luo & Zhao, ). Deep sand burial could limit gaseous exchange and, in the absence of light, reduce elongation and subsequent leaf formation (Luo & Zhao, ; Samsone et al., ).…”

Section: Discussionsupporting

confidence: 92%

“…This result is consistent with studies on Calligonum arborescens , where particular sand burial depth was an essential prerequisite for rhizomes to survive (Luo & Zhao, ). Deep sand burial could limit gaseous exchange and, in the absence of light, reduce elongation and subsequent leaf formation (Luo & Zhao, ; Samsone et al., ). In the present study, soil air‐filled porosity was reduced, with increased soil compaction in stabilized sand dunes (Table and Figure ), which may have retarded the ramets development, emergence, and survival (Maun, ).…”

Section: Discussionsupporting

confidence: 92%

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Factors influencing the natural regeneration of the pioneering shrub Calligonum mongolicum in sand dune stabilization plantations in arid deserts of northwest China

Fan

McHugh

Guo

et al. 2018

Ecology and Evolution

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Calligonum mongolicum is a successful pioneer shrub to combat desertification, which is widely used for vegetation restoration in the desert regions of northwest China. In order to reveal the limitations to natural regeneration of C. mongolicum by asexual and sexual reproduction, following the process of sand dune stabilization, we assessed clonal shoots, seedling emergence, soil seed bank density, and soil physical characteristics in mobile and stabilized sand dunes. Controlled field and pot experiments were also conducted to assess germination and seedling emergence in different dune soil types and seed burial depths. The population density of mature C. mongolicum was significantly different after sand dune stabilization. Juvenile density of C. mongolicm was much lower in stabilized sand dunes than mobile sand dune. There was no significant difference in soil seed bank density at three soil depths between mobile and stabilized sand dunes, while the emergence of seedlings in stabilized dunes was much lower than emergence in mobile dunes. There was no clonal propagation found in stabilized dunes, and very few C. mongolicum seedlings were established on stabilized sand dunes. Soil clay and silt content, air‐filled porosity, and soil surface compaction were significantly changed from mobile sand dune to stabilized dunes. Seedling emergence of C. mongolicm was highly dependent on soil physical condition. These results indicated that changes in soil physical condition limited clonal propagation and seedling emergence of C. mongolicum in stabilized sand dunes. Seed bank density was not a limiting factor; however, poor seedling establishment limited C. mongolicum's further natural regeneration in stabilized sand dunes. Therefore, clonal propagation may be the most important mode for population expansion in mobile sand dunes. As a pioneer species C. mongolicum is well adapted to propagate in mobile sand dune conditions, it appears unlikely to survive naturally in stabilized sand dune plantations.

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Section: Discussionsupporting

confidence: 92%

Section: Discussionsupporting

confidence: 92%

Factors influencing the natural regeneration of the pioneering shrub Calligonum mongolicum in sand dune stabilization plantations in arid deserts of northwest China

Fan

McHugh

Guo

et al. 2018

Ecology and Evolution

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“…Soil burial of rhizome fragments is necessary for survival in Physalis virginiana, P. heterophylla, and Calligonum arborescens (Abdullahi & Cavers, 1997;Luo & Zhao, 2015). This is because the fragments placed on the soil surface often suffer from dehydration and relatively high solar radiation during the re-rooting process (Zhu et al, 2014).…”

Section: Effects Of Burial Depth On Stolon Fragment Regenerationmentioning

confidence: 99%

Regenerative capacity and response to pre‐emergent herbicides by stolon fragments of triquetrous murdannia (Murdannia triquetra) in rice

Tang

Zhong

Chen

et al. 2020

Weed Biology and Management

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Triquetrous murdannia is an annual stoloniferous weed commonly found in wheat‐rice rotation fields in China. Disturbance after wheat harvesting can fragment stolons of triquetrous murdannia, and the regeneration of these fragments may contribute to the spread of this weed. In this study, the regenerate capacity and response to pre‐emergence (PRE) herbicides of stolon fragment of triquetrous murdannia were evaluated in a screenhouse. The experiment consisted of two types of single node fragments (2‐cm stolon node and five‐leaf stolon tips) placed under different floating, flooding and burial depth conditions. Results indicated that floating depth did not influence the survival of the two types of fragments but significantly decreased their growth (stolon length, number of branches, and biomass). The stolon nodes were more sensitive to flooding than stolon tips; no stolon node survived at a flooding depth of 6 cm. The highest survival was observed for fragments placed on the soil surface, and no fragments buried to a depth of 2 cm survived. PRE application of benzobicyclon, butachlor, metazosulfuron, and triafamone significantly decreased the branching and biomass of the stolon nodes; however, only triafamone and metazosulfuron significantly inhibited the regeneration of the stolon tips. These results suggest that stolon fragments with one node are likely to promote vegetative reproduction in triquetrous murdannia, and thus, disturbance may contribute to the spread of this weed. Tillage to bury fragments below their maximum regeneration depth and application of an effective PRE herbicide could serve as important tools for managing triquetrous murdannia.

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“…These limitations caused by sediment burial are mainly caused by the physical burden on the buried parts of plants ( Maun, 1998 ; Werner and Zedler, 2002 ; Koning, 2004 ) and fluctuations in abiotic conditions, such as decreases in the light availability ( Madsen et al, 2001 ), changes in nutrient contents, particle composition, and temperature of the soil ( Xiao et al, 2010 ; Pan et al, 2016 ). However, under shallow or medium burial conditions, growth of some plants can be promoted via phenotypic plasticity, such as elongation of petioles, stem internodes, and rhizomes, and adjusting the number of ramets and the biomass allocation to aboveground parts ( Maun, 1998 ; Deng et al, 2008 ; Luo and Zhao, 2015 ).…”

Section: Introductionmentioning

confidence: 99%

“…In clonal plants, studies on the responses to sediment burial mostly focus on the plasticity of clonal architecture and the change in clonal growth forms, such as the length of rhizomes and the number of clumping or spreading ramets ( Klimes et al, 1993 ; Li and Xie, 2009 ; Chen et al, 2011 , 2017 ). However, clonal integration among interconnected ramets, generally aids clonal plants to endure frequently occurring sediment burial ( Yu et al, 2001 , 2004 ; Chen et al, 2010 ; Luo and Zhao, 2015 ).…”

Section: Introductionmentioning

confidence: 99%

Responses to Sedimentation in Ramet Populations of the Clonal Plant Carex brevicuspis

Pan

Xie

et al. 2018

Front. Plant Sci.

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In aquatic ecosystems, sedimentation is an important factor that affects plant growth, mainly due to sediment depth. Clonal morphological plasticity is an effective strategy in clonal plants for acclimatization to sediment burial. To date, few studies have examined growth responses to sedimentation on the clonal plants at the ramet population level. This study aimed to explore the interactive effects of population size and burial depth on growth and clonal morphology of Carex brevicuspis. Three population sizes (2, 8, and 32 ramets) and 3 burial depths (0 cm, 5 cm, and 10 cm) were used in this experiment. Under shallow (5 cm) and deep (10 cm) burial conditions, biomass accumulation and relative growth rate (RGR) were lower than in the no burial treatment (P < 0.05). RGR of the small and medium populations was especially high compared to the large populations (P < 0.05). Biomass allocation was higher to belowground parts than aboveground parts, except for the small populations in the 5 cm burial treatments. Both shallow burial and smaller populations led to more biomass being allocated to aboveground parts. Deep burial elongated the first order spacer more than shallow burial, and sedimentation had negative effects on the second order spacer length. The number of new ramets did not decrease in the 5 or 10 cm burial treatments compared to the unburial treatment, and larger populations usually had more ramets than smaller ones; the proportion of clumping ramets was higher than the proportion of spreading ramets, and deeper burial and smaller populations led to higher proportions of spreading ramets. These results indicated that the growth of C. brevicuspis was limited by sediment burial at the ramet population level. Smaller populations enable C. brevicuspis to adjust its escape response to burial stress, may allow this species to effectively survive and widely distribute in Dongting Lake wetland.

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Burial depth and diameter of the rhizome fragments affect the regenerative capacity of a clonal shrub

Cited by 21 publications

References 44 publications

Factors influencing the natural regeneration of the pioneering shrub Calligonum mongolicum in sand dune stabilization plantations in arid deserts of northwest China

Factors influencing the natural regeneration of the pioneering shrub Calligonum mongolicum in sand dune stabilization plantations in arid deserts of northwest China

Regenerative capacity and response to pre‐emergent herbicides by stolon fragments of triquetrous murdannia (Murdannia triquetra) in rice

Responses to Sedimentation in Ramet Populations of the Clonal Plant Carex brevicuspis

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