Effects of Light on the Growth and Clonal Reproduction of <i>Ligularia virgaurea</i>

Wang, Mantang; Zhao, Zhi Gang; Du, Guozhen; He, Yong

doi:10.1111/j.1744-7909.2008.00645.x

Cited by 20 publications

(20 citation statements)

References 39 publications

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“…This indicates that not precipitation per se but a related climatic factor might be the driving force behind the reduced clonality in our wetter transplants. For instance, transplants to more oceanic sites with higher rainfall would also experience an increase in cloudiness, and thus a decrease in light availability, which has been shown to reduce the production of clonal ramets (Guo et al., ; Méthy, Alpert, & Roy, ; Wang, Zhao, Du, & He, ; P. Wang, Lei, Li, & Yu, ; Xie, Zhang, Zhao, Du, & He, ). Our experimental setup allows us to address this effect independent of any change in temperature, which otherwise may have masked this response.…”

Section: Discussionmentioning

confidence: 99%

The devil is in the detail: Nonadditive and context‐dependent plant population responses to increasing temperature and precipitation

Töpper

Meineri

Olsen

et al. 2018

Global Change Biology

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In climate change ecology, simplistic research approaches may yield unrealistically simplistic answers to often more complicated problems. In particular, the complexity of vegetation responses to global climate change begs a better understanding of the impacts of concomitant changes in several climatic drivers, how these impacts vary across different climatic contexts, and of the demographic processes underlying population changes. Using a replicated, factorial, whole-community transplant experiment, we investigated regional variation in demographic responses of plant populations to increased temperature and/or precipitation. Across four perennial forb species and 12 sites, we found strong responses to both temperature and precipitation change. Changes in population growth rates were mainly due to changes in survival and clonality. In three of the four study species, the combined increase in temperature and precipitation reflected nonadditive, antagonistic interactions of the single climatic changes for population growth rate and survival, while the interactions were additive and synergistic for clonality. This disparity affects the persistence of genotypes, but also suggests that the mechanisms behind the responses of the vital rates differ. In addition, survival effects varied systematically with climatic context, with wetter and warmer + wetter transplants showing less positive or more negative responses at warmer sites. The detailed demographic approach yields important mechanistic insights into how concomitant changes in temperature and precipitation affect plants, which makes our results generalizable beyond the four study species. Our comprehensive study design illustrates the power of replicated field experiments in disentangling the complex relationships and patterns that govern climate change impacts across real-world species and landscapes.

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Section: Discussionmentioning

confidence: 99%

The devil is in the detail: Nonadditive and context‐dependent plant population responses to increasing temperature and precipitation

Töpper

Meineri

Olsen

et al. 2018

Global Change Biology

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“…Although RO is usually discussed as sexual reproductive output, increases in clonal output with size are also common (Brown and Eckert 2005;Hawkins et al 2005;Wang et al 2008). Although clonal output increased with size in the second generation, a surprising result from the first generation of Penthorum sedoides is that stolon and ramet mass decreased as plant size increased.…”

Section: Sexual and Clonal Outputmentioning

confidence: 91%

“…For example, Wang et al (2008) found that RA increased with size across density treatments and decreased in size across sowing dates in Amaranthus retroflexus. Likewise, RA was either positively or negatively correlated with plant size depending on species identity, grazing, and nutrient addition (Niu et al 2009).…”

Section: Sexual Reproductive Allocationmentioning

confidence: 95%

Size-Dependent Analysis of Allocation to Sexual and Clonal Reproduction inPenthorum sedoidesunder Contrasting Nutrient Levels

Nicholls

2011

International Journal of Plant Sciences

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Reproductive output and reproductive allocation are important factors in the life history of any organism. In clonal plants, however, ''reproductive'' can refer to both sexual and asexual (clonal) replication. When investigating reproductive allocation, it is essential that the size of the plants studied be taken into account and that the direct analysis of ratios (e.g., fruit mass/vegetative mass) be avoided. Using methods that allow the testing of both a minimum size of reproduction and nonlinearity in the reproduction-size relationship, I investigated allocation of resources to both sexual (fruit mass) and clonal (stolon mass, ramet mass, and ramet number) reproduction in Penthorum sedoides under two nutrient treatments and over two generations. Allocation to sexual reproduction was predicted to be higher in the control treatments, while allocation to clonal reproduction should be higher in the nutrient-enriched treatment, in an effort to produce the most fit offspring in a given environment. The hypothesis that allocation to clonal growth would increase in highnutrient environments was supported by the results for stolon and ramet mass but not for ramet number. The hypothesis that sexual allocation would increase in resource-poor environments was supported only in the second year of the experiments.

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“…; Wang et al. ). However, the effects of light intensity on the relationship between clonal and sexual structures are unknown.…”

Section: Introductionmentioning

confidence: 98%

Intraspecific competition and light effect on reproduction of Ligularia virgaurea, an invasive native alpine grassland clonal herb

Xie

Zhang

Zhao

et al. 2014

Ecology and Evolution

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The relationship between sexual reproduction and clonal growth in clonal plants often shows up at the ramet level. However, only a few studies focus on the relationship at the genet level, which could finally account for evolution. The sexual reproduction and clonal growth of Ligularia virgaurea, a perennial herb widely distributed in the alpine grasslands of the Qinghai-Tibetan Plateau of China, were studied under different competition intensities and light conditions at the genet level through a potted experiment. The results showed that: (1) sexual reproduction did not depend on density or light, and increasing clonal growth with decreasing density and increasing light intensity indicated that intraspecific competition and light intensity may affect the clonal life history of L. virgaurea; (2) both sexual reproduction and clonal growth show a positive linear relationship with genet size under different densities and light conditions; (3) a threshold size is required for sexual reproduction and no evidence of a threshold size for clonal growth under different densities and light conditions; (4) light level affected the allocation of total biomass to clonal and sexual structures, with less allocation to clonal structures and more allocation to sexual structures in full sunlight than in shade; (5) light determined the onset of sexual reproduction, and the genets in the shade required a smaller threshold size for sexual reproduction to occur than the plants in full sunlight; and (6) no evidence was found of trade-offs between clonal growth and sexual reproduction under different densities and light conditions at the genet level, and the positive correlation between two reproductive modes indicated that these are two integrated processes. Clonal growth in this species may be viewed as a growth strategy that tends to maximize genet fitness.

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Effects of Light on the Growth and Clonal Reproduction of Ligularia virgaurea

Cited by 20 publications

References 39 publications

The devil is in the detail: Nonadditive and context‐dependent plant population responses to increasing temperature and precipitation

The devil is in the detail: Nonadditive and context‐dependent plant population responses to increasing temperature and precipitation

Size-Dependent Analysis of Allocation to Sexual and Clonal Reproduction inPenthorum sedoidesunder Contrasting Nutrient Levels

Intraspecific competition and light effect on reproduction of Ligularia virgaurea, an invasive native alpine grassland clonal herb

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