Global geographic patterns of heterospecific pollen receipt help uncover potential ecological and evolutionary impacts across plant communities worldwide

Arceo‐Gómez, Gerardo; Schroeder, Amelia; Albor, Cristopher; Ashman, Tia Lynn; Knight, Tiffany M.; Bennett, Joanne M.; Suarez, Brian K.; Parra-Tabla, Vı́ctor

doi:10.1038/s41598-019-44626-0

Cited by 32 publications

(42 citation statements)

References 77 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Thus, this latter species could be expected to be more efficient at avoiding HP (see McLernon et al., ; Montgomery and Rathcke, ). A recent global analysis also showed that species with radial flowers receive higher HP loads compared to bilateral flowers (Arceo‐Gómez et al., ). In fact, in the present study, S. plumieri (bilateral flowers) received significantly less HP than C. edentula (radial flowers).…”

Section: Discussionmentioning

confidence: 94%

See 1 more Smart Citation

Patterns and effects of heterospecific pollen transfer between an invasive and two native plant species: the importance of pollen arrival time to the stigma

Suárez‐Mariño¹,

Arceo‐Gómez

Sosenski³

et al. 2019

American J of Botany

Self Cite

View full text Add to dashboard Cite

Premise Invasive plant species can integrate into native plant–pollinator communities, but the underlying mechanisms are poorly understood. Competitive interactions between invasive and native plants via heterospecific pollen (HP) and differential invasive HP effects depending on HP arrival time to the stigma may mediate invasion success, but these have been little studied. Methods We evaluated patterns and effects of HP receipt on pollen tube growth in two native and one invasive species in the field. We also used hand‐pollination experiments to evaluate the effect of invasive HP pollen and its arrival time on native reproductive success. Results Native species receive smaller and less‐diverse HP loads (5–7 species) compared to invasive species (10 species). The load size of HP had a negative effect on the proportion of pollen tubes in both native species but not in the invasive, suggesting higher HP tolerance in the latter. Invasive HP arrival time differentially affected pollen tube success in native species. Conclusions Our results highlight the need to study reciprocal HP effects between invasive and native species and the factors that determine differential responses to HP receipt to fully understand the mechanisms facilitating invasive species integration into native plant–pollinator communities.

show abstract

Section: Discussionmentioning

confidence: 94%

“…In fact, in the present study, S. plumieri (bilateral flowers) received significantly less HP than C. edentula (radial flowers). Thus, because S. plumieri is better at avoiding HP receipt, selection toward HP tolerance strategies may be weaker and therefore the HP effects stronger when HP is deposited (Arceo‐Gómez et al., ).…”

Section: Discussionmentioning

confidence: 99%

Patterns and effects of heterospecific pollen transfer between an invasive and two native plant species: the importance of pollen arrival time to the stigma

Suárez‐Mariño¹,

Arceo‐Gómez

Sosenski³

et al. 2019

American J of Botany

Self Cite

View full text Add to dashboard Cite

show abstract

“…In flowering communities, heterospecific pollen (HP) transfer is common and can result in negative consequences for plant reproductive success such as reduced pollen tube growth and seed production [1][2][3][4][5][6]. HP transfer mainly occurs when various plant species share the same flower visitors [7], although wind-dispersed pollen and other random events may also play a role [3,8]. During foraging, insects often visit and collect pollen from flowers from multiple plant species and may consequently transfer con-and heterospecific pollen (CP / HP) to a stigma [9].…”

Section: Introductionmentioning

confidence: 99%

“…Associations between floral traits, HP reception or donation and network properties are variable and even contradictory [3,26,27]. In general, stigma size, flower symmetry and floral size increase the likelihood and intensity of HP reception [3,27,28]. Short styles have been suggested to increase or decrease HP susceptibility [1,4,27].…”

Section: Introductionmentioning

confidence: 99%

Floral traits are associated with the quality but not quantity of heterospecific stigmatic pollen loads

et al. 2020

View full text Add to dashboard Cite

Background In flowering communities, plant species commonly share pollinators and therefore plant individuals receive heterospecific pollen (HP). However, the patterns of HP transfers can deviate from patterns of plant-pollinator visitations. Although flower-visitor interactions are known to be mediated by floral traits, e.g. floral size or nectar tube depth, the explanatory power of these traits for HP transfer patterns remains elusive. Here, we have explored pollen transfer patterns at three sites in Southern Germany on three dates (early, mid and late summer). At the plant level, we tested whether flower abundance and floral traits are correlated with HP reception and donation. At the community level, we determined whether flower and bee diversity are correlated with network modularity and whether floral traits explain the module affiliation of plant species. We collected the stigmas of flowering plant species, analysed HP and conspecific pollen (CP) loads and measured floral traits, flower and bee diversity. Results Our results show that the degree and intensity of HP reception or donation at the plant level do not correlate with floral traits, whereas at the community level, the module affiliation of who is sharing pollen with whom is well-explained by floral traits. Additionally, variation in network modularity between communities is better explained by plant diversity and abundance than by bee diversity and abundance. Conclusions Overall, our results indicate that floral traits that are known to mediate flower-visitor interactions can improve our understanding of qualitative HP transfer but only provide limited information about the quantity of HP transfer, which more probably depends on other floral traits, flower-visitor identity or community properties.

show abstract

“…With this study, we have contributed to the growing body of literature that uses molecular methods to understand pollen use by bees (Mitchell et al 2009, Galimberti 2014, Bell et al 2017, Galliot et al 2017, Lucas et al 2018, Bell et al 2019), and in the process provided some evidence for heterospecific pollen transfer in flowering plant communities (Mitchell et al 2009, Arceo-Gómez et al 2019a, b). That said, pollen balls in our study were typically comprised of only one species of Clarkia , which indicates that heterospecific pollen transfer may not be as common in the Clarkia system as in other flowering plant systems.…”

Section: Discussionmentioning

confidence: 99%

Molecular Assays of Pollen Use Consistently Reflect Pollinator Visitation Patterns in a System of Flowering Plants

James

Geber

Toews

2020

Preprint

View full text Add to dashboard Cite

An underdeveloped but potentially valuable molecular method in ecology is the ability to quantify the frequency with which foraging pollinators carry different plant pollens. Thus far, DNA metabarcoding has only reliably identified the presence/absence of a plant species in a pollen sample, but not its relative abundance in a mixed sample. Here we use a system of four congeneric, co-flowering plants in the genus Clarkia and their bee pollinators to (1) develop a molecular method to quantify different Clarkia pollens found on foraging bees; and (2) determine if bee pollinators carry Clarkia pollens in predictable ways, based on knowledge of their foraging behaviors. We develop a molecular method we call quantitative amplicon sequencing (qAMPseq) which varies cycling number (20, 25, 30, and 35 cycles) in polymerase chain reaction (PCR), individually indexing the same samples in different cycle treatments, and sequencing the resulting amplicons. These values are used to approximate an amplification curve for each Clarkia species in each sample, similar to the approach of quantitative PCR, which can then be used to estimate the relative abundance of the different Clarkia species in the sample. Using this method, we determine that bee visitation behaviors are generally predictive of the pollens that bees carry while foraging. We also show that some bees carry multiple species of Clarkia at the same time, indicating that Clarkia likely compete via interspecific pollen transfer. In addition to adding a ‘missing link’ between bee visitation behavior and actual pollen transfer, we suggest qAMPseq as another molecular method to add to the developing molecular ecology and pollination biology toolbox.

show abstract

Global geographic patterns of heterospecific pollen receipt help uncover potential ecological and evolutionary impacts across plant communities worldwide

Cited by 32 publications

References 77 publications

Patterns and effects of heterospecific pollen transfer between an invasive and two native plant species: the importance of pollen arrival time to the stigma

Patterns and effects of heterospecific pollen transfer between an invasive and two native plant species: the importance of pollen arrival time to the stigma

Floral traits are associated with the quality but not quantity of heterospecific stigmatic pollen loads

Molecular Assays of Pollen Use Consistently Reflect Pollinator Visitation Patterns in a System of Flowering Plants

Contact Info

Product

Resources

About