Latitudinal and Longitudinal Trends of Seed Traits Indicate Adaptive Strategies of an Invasive Plant

Zhou, Lifeng; Yu, Hu; Yang, Kaiwen; Chen, Li; Ding, Jianqing

doi:10.3389/fpls.2021.657813

Cited by 17 publications

(23 citation statements)

References 63 publications

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“…where G t is the number of germinations at different times and D t is the corresponding number of germination days ( Zhou et al, 2021 ).…”

Section: Methodsmentioning

confidence: 99%

“…where G t is the number of germinations at different times and D t is the corresponding number of germination days (Zhou et al, 2021). The median germination time (T 50 ) was the time for 50% of final germination (Ranal and Santana, 2006).…”

Section: Germination Experimentsmentioning

confidence: 99%

“…These environmental factors (cold winter and warming spring) that drive stratification and germination temperature vary predictably by latitude, but recent studies of seed germination at different latitudes have shown contrasting results. Cross-species analyses have found that some species germinate faster at higher latitudes ( Chamorro et al, 2018 ) and some slower ( Zhou et al, 2021 ), suggesting species-specific responses to their environment. Yet, few studies have examined variation in seed germination within species over their geographic distribution in response to these factors ( Baskin and Baskin, 1998 ; Molina-Montenegro et al, 2018 ; Solé-Medina et al, 2020 ).…”

Section: Introductionmentioning

confidence: 99%

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Unraveling the Effects of Cold Stratification and Temperature on the Seed Germination of Invasive Spartina alterniflora Across Latitude

et al. 2022

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Seed germination is critical to the life history of plants, playing an important role in the successful recruitment, colonization, and even invasion of new individuals within and outside population distribution ranges. Cold stratification and temperature are the key factors affecting seed germination traits. Studying how these two factors drive geographical variation in seed germination is essential to analyze and predict the geographical distribution range of alien plants in novel habitats. Spartina alterniflora, native to the United States, was introduced into China in 1979 and has spread over 20° of latitude along the eastern coast of China. Germination plays a crucial role in S. alterniflora’s large-scale invasion and diffusion across latitude. To evaluate the effects of cold stratification and temperature on seed germination of S. alterniflora across latitude, we collected seeds at seven locations across latitude in China. We exposed these provenances to cold stratification at 4°C (0, 1, 3, and 5 months) and germination temperature (5°C, 15°C, 25°C, and 35°C) treatments in growth chambers. Seed germination was observed for 98 days, and we calculated germination rate, germination index, and germination time. Results indicated that longer cold stratification significantly promoted germination rate and germination index, but decreased germination time. Similarly, higher germination temperature significantly promoted germination rate and germination index, but decreased germination time. Moreover, there were significant interactive effects on germination traits between cold stratification and temperature. Seed germination traits showed linear relationships with latitude, indicating that S. alterniflora seeds from different provenances germinated at different times and adopted different germination strategies. The stratification and temperature are the most important factors regulating the dormancy and germination seeds, so they can be important drivers of this variation along latitude. Under scenarios of warmer regional temperature, seeds at higher latitudes could germinate earlier and have higher germination rate, which would favor a potential northern expansion of this invasive plant.

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“…where G t is the number of germinations at different times and D t is the corresponding number of germination days ( Zhou et al, 2021 ).…”

Section: Methodsmentioning

confidence: 99%

Section: Germination Experimentsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Unraveling the Effects of Cold Stratification and Temperature on the Seed Germination of Invasive Spartina alterniflora Across Latitude

et al. 2022

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“…It is an important link in the material cycle and nutrient flow that can continuously provide resources to the soil and plants (Scheffer and Aerts, 2000 ; Zhang et al, 2020 ). There is a rapid mass loss rate and nutrient release that increases the resource-use efficiency of the environment in the early decomposition stage (Zhou et al, 2021 ). The litter decomposition process is generally regulated by climatic patterns, soil nutrients, decomposer assemblages, and litter properties (Yelenik et al, 2007 ).…”

Section: Introductionmentioning

confidence: 99%

Invasive Plants and Species Richness Impact Litter Decomposition in Riparian Zones

Arif²,

Ding³

et al. 2022

Front. Plant Sci.

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Natural ecosystems generally include litter decomposition as part of the natural cycle since the material properties and the environment greatly influence the decomposition rate. The invasion of exotic plants alters the species diversity and growth characteristics of plant communities, but its impact on litter decomposition is unknown in the riparian zone. This study examines how invasive plants affect the early stages of litter decomposition and how species richness impacts them. This experiment involved a random litter mixture of exotic (Alternanthera philoxeroides and Bidens pilosa) and native species in the riparian zone of the Three Gorges Dam Reservoir in China. There were 43 species mixture types, with various species richness ranging from 1 to 6. Litterbags were placed in the hydro-fluctuation zone and terrestrial zone, where they decomposed over the course of 55 days. Invasive plants decompose rapidly compared to native plants (35.71% of the remaining mass of the invasive plant). The invasive plant A. philoxeroides has the potential to accelerate native plant decomposition (0.29 of non-added synergetic effect), but Bidens pilosa cannot. Nonetheless, species richness had little effect on the decomposition rate. These effects are dependent upon differences in chemical functional characteristics among the species. The initial traits of the plants, specifically C, N, and C/N, were significantly and linearly correlated with the loss of mixed litter mass and mixing effect strength (P < 0.01). In addition, submergence decomposition conditions reduce the disturbance of invasive plants and predict decomposition rates based on litter characteristics. Invasive plants can therefore impact the material cycle of an ecosystem. There is a need to examine decomposition time, which may also involve considering other factors.

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“…The seedling stage is a critical phase of plant growth that has a major effect on the structure and composition of natural communities (Ding et al, 2016 ; Peay and Clemmensen, 2018 ; Tomlinson et al, 2018 ; Zhou et al, 2021 ). Characterizing the responses of different plant seedlings to various factors affecting growth, survival, and biomass allocation can improve our understanding of community assembly and the mechanisms maintaining diversity in natural and disturbed ecosystems (Liu et al, 2012 ; Zhang et al, 2017a , 2020 ; Zhong et al, 2019 ).…”

Section: Introductionmentioning

confidence: 99%

Belowground Root Competition Alters the Grass Seedling Establishment Response to Light by a Nitrogen Addition and Mowing Experiment in a Temperate Steppe

Ming

Wang

et al. 2022

Front. Plant Sci.

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Predicting species responses to climate change and land use practices requires understanding both the direct effects of environmental factors as well as the indirect effects mediated by changes in belowground and aboveground competition. Belowground root competition from surrounding vegetation and aboveground light competition are two important factors affecting seedling establishment. However, few studies have jointly examined the effect of belowground root and light competition on seedling establishment, especially under long-term nitrogen addition and mowing. Here, we examined how belowground root competition from surrounding vegetation and aboveground light competition affect seedling establishment within a long-term nitrogen addition and mowing experiment. Seedlings of two grasses (Stipa krylovii and Cleistogenes squarrosa) were grown with and without belowground root competition under control, nitrogen addition, and mowing treatments, and their growth characteristics were monitored. The seedlings of the two grasses achieved higher total biomass, height, mean shoot and root mass, but a lower root/shoot ratio in the absence than in the presence of belowground root competition. Nitrogen addition significantly decreased shoot biomass, root biomass, and the survival of the two grasses. Regression analyses revealed that the biomass of the two grass was strongly negatively correlated with net primary productivity under belowground root competition, but with the intercept photosynthetic active radiation in the absence of belowground root competition. This experiment demonstrates that belowground root competition can alter the grass seedling establishment response to light in a long-term nitrogen addition and mowing experiment.

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Latitudinal and Longitudinal Trends of Seed Traits Indicate Adaptive Strategies of an Invasive Plant

Cited by 17 publications

References 63 publications

Unraveling the Effects of Cold Stratification and Temperature on the Seed Germination of Invasive Spartina alterniflora Across Latitude

Unraveling the Effects of Cold Stratification and Temperature on the Seed Germination of Invasive Spartina alterniflora Across Latitude

Invasive Plants and Species Richness Impact Litter Decomposition in Riparian Zones

Belowground Root Competition Alters the Grass Seedling Establishment Response to Light by a Nitrogen Addition and Mowing Experiment in a Temperate Steppe

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