Floral visitors and pollinator dependence are related to floral display size and plant height in native weeds of central Mexico

Hernández-Villa, Valeria; Vibrans, Heike; Uscanga-Mortera, Ebandro; Aguirre‐Jaimes, Armando

doi:10.1016/j.flora.2019.151505

Cited by 25 publications

(17 citation statements)

References 57 publications

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“…Our study uncovered a previously unrecognized relationship between pollen virome richness and plant traits that attract pollinators and influence their interactions with pollen, thus by extension highlighting the potential importance of pollinators as vectors of pollen-associated viruses. Multiple flowered-inflorescences increase the likelihood that plants will interact with pollinators in general and increase the likelihood that a plant will interact with diverse flower visitors e.g., 51 – 53 ; here, we found that they also positively predicted the taxonomic richness of the pollen virome. We found that plant species with bilaterally symmetric flowers had richer viromes, suggesting that restricted and directed pollinator access may lead to more contact with the stigma and increased transfer of pollen and pollen-associated viruses.…”

Section: Discussionsupporting

confidence: 61%

The pollen virome of wild plants and its association with variation in floral traits and land use

et al. 2022

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Pollen is a unique vehicle for viral spread. Pollen-associated viruses hitchhike on or within pollen grains and are transported to other plants by pollinators. They are deposited on flowers and have a direct pathway into the plant and next generation via seeds. To discover the diversity of pollen-associated viruses and identify contributing landscape and floral features, we perform a species-level metagenomic survey of pollen from wild, visually asymptomatic plants, located in one of four regions in the United States of America varying in land use. We identify many known and novel pollen-associated viruses, half belonging to the Bromoviridae, Partitiviridae, and Secoviridae viral families, but many families are represented. Across the regions, species harbor more viruses when surrounded by less natural and more human-modified environments than the reverse, but we note that other region-level differences may also covary with this. When examining the novel connection between virus richness and floral traits, we find that species with multiple, bilaterally symmetric flowers and smaller, spikier pollen harbored more viruses than those with opposite traits. The association of viral diversity with floral traits highlights the need to incorporate plant-pollinator interactions as a driver of pollen-associated virus transport into the study of plant-viral interactions.

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Section: Discussionsupporting

confidence: 61%

The pollen virome of wild plants and its association with variation in floral traits and land use

et al. 2022

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“…Flower visitation rate of insect-pollinated plants depends on visual cues indicating high floral reward such as the number of open flowers ( Conner & Rush, 1996 ; Akter, Biella & Klecka, 2017 ) and the size of floral display ( Grindeland, Sletvold & Ims, 2005 ; Parachnowitsch & Kessler, 2010 ; Biella et al, 2019 ), and on the amount and quality of nectar and pollen ( Cresswell, 1999 ; Grindeland, Sletvold & Ims, 2005 ). Other morphological features can also influence plant detection by potential pollinators, such as plant height ( Junker et al, 2013 ; Klecka, Hadrava & Koloušková, 2018a ; Hernández-Villa et al, 2020 ), local plant clustering ( Elliott & Irwin, 2009 ; Akter, Biella & Klecka, 2017 ), and flower colour ( Reverté et al, 2016 ). Measurements of flower visitation with plants grown in the spring 2017 and plants grown in the summer 2018 revealed that in both cases plants grown with higher amount of water had a significantly higher number of flower visitors compared to plants grown under low amount of water irrespective of nitrogen supply.…”

Section: Discussionmentioning

confidence: 99%

Water stress and nitrogen supply affect floral traits and pollination of the white mustard,Sinapis alba(Brassicaceae)

Akter

Klečka

2022

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Changes in environmental conditions are likely to have a complex effect on the growth of plants, their phenology, plant-pollinator interactions, and reproductive success. The current world is facing an ongoing climate change along with other human-induced environmental changes. Most research has focused on the impact of increasing temperature as a major driving force for climate change, but other factors may have important impacts on plant traits and pollination too and these effects may vary from season to season. In addition, it is likely that the effects of multiple environmental factors, such as increasing temperature, water availability, and nitrogen enrichment are not independent. Therefore, we tested the impact of two key factors—water, and nitrogen supply—on plant traits, pollination, and seed production in Sinapis alba (Brassicaceae) in three seasons defined as three temperature conditions with two levels of water and nitrogen supply in a factorial design. We collected data on multiple vegetative and floral traits and assessed the response of pollinators in the field. Additionally, we evaluated the effect of growing conditions on seed set in plants exposed to pollinators and in hand-pollinated plants. Our results show that water stress impaired vegetative growth, decreased flower production, and reduced visitation by pollinators and seed set, while high amount of nitrogen increased nectar production under low water availability in plants grown in the spring. Temperature modulated the effect of water and nitrogen availability on vegetative and floral traits and strongly affected flowering phenology and flower production. We demonstrated that changes in water and nitrogen availability alter plant vegetative and floral traits, which impacts flower visitation and consequently plant reproduction. We conclude that ongoing environmental changes such as increasing temperature, altered precipitation regimes and nitrogen enrichment may thus affect plant-pollinator interactions with negative consequences for the reproduction of wild plants and insect-pollinated crops.

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“…Studies such as that of Genung et al (2010) have documented that the genotypic diversity of a plant could have an indirect influence on the abundance and richness of the floral visitors. Floral visitors were understood as any animal that physically touched the flowers or the inflorescences (Hernández-Villa et al, 2020). These animals can play several roles in the flower, as is the case of pollinators, or have no relation at all with the reproductive process, even though some feed on nectar or pollen (Wäckers et al, 2007).…”

Section: Discussionmentioning

confidence: 99%

Visitantes florales en el cultivo de Phaseolus coccineus (Fabaceae) en el Altiplano de Puebla, México: importancia del manejo agrícola y color de flor

et al. 2022

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Background and Aims: Phaseolus coccineus is an allogamous plant, with variation in flower color, and reproduction that depends on pollinators. The species is cultivated under two approaches: one in which agrochemicals are not used to control weeds and pests (traditional management) and another in which they are (technified management). No studies have evaluated the influence of agricultural management system and flower color on the floral visitors of this species; our objective was therefore to analyze how these factors affect the diversity and frequency of the floral visitors of P. coccineus. Methods: A study was conducted with two landraces of P. coccineus (white-flowered and red-flowered), cultivated under two different management systems. Simultaneous observations were conducted for a period of eight days during the peak of flowering, quantifying the number of floral visitors and visits. Species richness and the effective number of species were calculated, the latter was used as a measure of diversity. Chi-square tests were applied, a correspondence analysis performed, and rank abundance curves constructed. Key results: Forty-two morphospecies were recorded, grouped into six orders. Apis mellifera and Hylocharis leucotis were the predominant species. The numbers of visits recorded under traditional management were 1613 and 1105 in white and red flowers, respectively. Under the technified management, these values were 1427 and 815, respectively. There were consistent statistical differences between management systems, but not for flower color. In the white flowers, the traditional management was twice more diverse than the technified management. In the red flowers, this difference was 1.26 times. Conclusions: The diversity and frequency of floral visitors of P. coccineus are favored by the traditional agricultural management, demonstrating the desirability of promoting this type of cultivation. Under the conditions studied, flower color did not influence the species richness or demonstrate any defined tendencies on the frequency of visits.

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Floral visitors and pollinator dependence are related to floral display size and plant height in native weeds of central Mexico

Cited by 25 publications

References 57 publications

The pollen virome of wild plants and its association with variation in floral traits and land use

The pollen virome of wild plants and its association with variation in floral traits and land use

Water stress and nitrogen supply affect floral traits and pollination of the white mustard,Sinapis alba(Brassicaceae)

Visitantes florales en el cultivo de Phaseolus coccineus (Fabaceae) en el Altiplano de Puebla, México: importancia del manejo agrícola y color de flor

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