Floral biology and breeding system of Bauhinia forficata (Leguminosae: Caesalpinioideae), a moth-pollinated tree in southeastern Brazil

Paulino-Neto, Hipólito Ferreira

doi:10.1007/s40415-013-0011-8

Cited by 13 publications

(8 citation statements)

References 55 publications

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“…In other plants, high sugar concentration is known to increase the duration of pollinator visits (Gleiser et al 2014). Although nectar volume in P. yunnanensis is lower than that observed in other species of Bauhinia s.l., the concentration of its nectar is much higher (Lau et al 2009, Neto 2013. In our study, two peaks of nectar production were observed, during the mornings of the first and second days after anthesis, which also coincided with peaks in anther dehiscence and pollinator visits.…”

Section: Floral Biologysupporting

confidence: 59%

Staminodes influence pollen removal and deposition rates in nectar-rewarding self-incompatible Phanera yunnanensis (Caesalpinioideae)

Wang

Huang

et al. 2019

J. Trop. Ecol.

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Staminodes are sterile stamens that produce no pollen, exhibit diverse structures and perform various functions. Flowers of Phanera yunnanensis possess three fertile stamens with large anthers and long filaments, and seven staminodes with tiny anthers and short filaments. To investigate the adaptive significance of staminodes in this species, we studied effects of staminode removal on pollen removal and deposition, flower visitation rate and fruit set in Xishuangbanna, south-western China. Four species of nectar-foraging pollinators visited flowers, mostly Amegilla zonata and Apis cerana (2.80 ± 0.15 and 1.76 ± 0.41 visits h−1 per flower, respectively). Staminode removal did not affect fruit set, but increased visitation by A. cerana by 2.6-fold, reduced visitation by A. zonata by 68% and increased the pollen removal rate for both pollinators (all effects were significant). Staminode removal significantly reduced pollen deposition rate for A. zonata, but not for A. cerana. These results suggest that the staminodes of P. yunnanensis filter which insects act as pollinators and affect pollen removal and deposition rates. By reducing pollen removal rates, staminodes may implement a pollen-dispensing schedule that spreads pollen dispersal from individual flowers over multiple pollinators. By altering pollen deposition rates, staminodes may influence reproductive fitness in other ways.

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Section: Floral Biologysupporting

confidence: 59%

Staminodes influence pollen removal and deposition rates in nectar-rewarding self-incompatible Phanera yunnanensis (Caesalpinioideae)

Wang

Huang

et al. 2019

J. Trop. Ecol.

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“…In our review, we do not make comment on the quality or contribution of particular pollinating taxa and instead we report on a taxa pollinating or being pollinated in some capacity at night. However, some of the papers included in this review identified crop plants that are pollinated exclusively at night, for example, Bauhinia forficata (Fabaceae) is pollinated primarily by the hawkmoth Manduca sexta (Neto, 2013). Bees visited the flowers during the day and removed pollen but did not contact the stigma, making their visits detrimental to the plant's overall fitness (Newstrom & Robertson, 2005).…”

Section: Discussionmentioning

confidence: 99%

A global review demonstrating the importance of nocturnal pollinators for crop plants

Buxton

Gaskett

Lord

et al. 2022

Journal of Applied Ecology

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Pollinating insects are critical to ecosystem stability and food security. Concerns about the impact of insect declines have therefore seen increased research on the role of wild pollinators in cropping systems. However, this research has predominantly focused on diurnal pollinators such as bees and flies, leaving the role of nocturnal pollinators poorly understood in comparison. Here, we review the literature on nocturnal pollinators of food crops and medicinal plants by undertaking an abstract, title, and keyword literature search in Web of Science Core Collection [v.5.32]. We found interactions recorded between plants and nocturnal pollinators for 52 plant families, with Cactaceae, Fabaceae and Asparagaceae being mentioned most frequently in the context of nocturnal pollination. We identified 81 animal families that behave as nocturnal crop pollinators, with Sphingidae and Noctuidae moths and Phyllostomidae bats being mentioned most frequently. The evidence to support claims of pollination by nocturnally active animals varied in strength and mostly involved observations of flower visitation or pollination being inferred based on floral traits. There was a lack of strong experimental evidence. Detailed experimental work, such as pollinator exclusion experiments, is therefore required to corroborate the patterns we have discovered. Our review is biased towards publications in the English language, but despite this our study shows tropical regions such as Brazil appear to be hotspots for nocturnal crop pollination. Policy implications. Our findings suggest that nocturnal pollinators visit a large range of crop plants, and may be more important to ecosystem function and food production than currently thought. Current policies in cropping systems implemented to protect bees, such as regulations on pesticide use, are unlikely to also protect nocturnal pollinators. As we develop a better understanding of the importance of nocturnal pollinators for crop plants, many of these regulations may need to be updated to ensure pollination service is not being compromised.

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“…With this diversity of mechanisms, plant species proved to be pollen vector-dependent (Neto 2013). If there is a pollinator population decline in this environment, it could primarily affect dioecious tree species, in addition to incompatible species or species that present barriers that may prevent self-pollination (Peng et al 2014;Ramirez & Hokiche 2019).…”

Section: Discussionmentioning

confidence: 99%

Sexual and reproductive systems of woody species in vereda are distributed according to the life form and habitat occurrence

et al. 2022

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In Cerrado humid areas, veredas are considered as hygrophilous communities, with an herbaceous/shrub stratum in open areas and an arboreal stratum in forest areas. We identified the sexual and reproductive systems of woody species, and the distribution of these systems among the different habitats and plants habits in this ecosystem. We investigated whether the occurrence of sexual and reproductive systems may be related to ecological and/or evolutionary factors and if hermaphroditism predominates in open areas. In this case, we evaluated which reproductive strategies promote cross‐pollination and which species are dependent on pollinating agents to promote the reproductive process. We selected the species according to a phytosociological study, using plots distributed in parallel transects and allocated in the hygrophilous forest and open areas. Floral morphology analyses, self‐pollination treatments, presence of barriers that prevent self‐pollination, phylogenetic signal and literature survey were performed. We did not find phylogenetic signal evidence for the traits evaluated. Most species are trees, followed by shrubs and sub‐shrubs. Dioecy predominated among tree species in the open area, with hermaphroditism more related to shrub species in the open areas. Shrubs and sub‐shrubs were mainly represented by autogamous and apomictic species. Despite autogamy and apomixis were related to the open areas, we found no significant difference between the habitats. In veredas, that are considered a poorly resilient environment that has constant problems with recent anthropogenic activities, we expected a high number of autogamous and apomictic species. However, the results showed that most species have characteristics that promote allogamy and are pollinating agents dependent for reproduction.

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Floral biology and breeding system of Bauhinia forficata (Leguminosae: Caesalpinioideae), a moth-pollinated tree in southeastern Brazil

Cited by 13 publications

References 55 publications

Staminodes influence pollen removal and deposition rates in nectar-rewarding self-incompatible Phanera yunnanensis (Caesalpinioideae)

Staminodes influence pollen removal and deposition rates in nectar-rewarding self-incompatible Phanera yunnanensis (Caesalpinioideae)

A global review demonstrating the importance of nocturnal pollinators for crop plants

Sexual and reproductive systems of woody species in vereda are distributed according to the life form and habitat occurrence

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