Growth discrepancy between filament and style facilitates self‐fertilization in <i><scp>B</scp>randisia hancei</i> (<scp>P</scp>aulowniaceae)

Ren, Yong-Quan; Xu, You-Pin; Zhang, Ting; Ma, Yongpeng; Marczewski, Tobias

doi:10.1111/1442-1984.12099

Cited by 8 publications

(14 citation statements)

References 21 publications

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“…hancei Hook.f. is self-compatible but depends on pollinators for increased reproductive output, which is the same result found by Ren et al (2016). The seed set of handcrossing pollination was similar to that of hand-selfing pollination (χ 2 = 0.178, df = 1, P = 0.673) and significantly higher than that of the open control treatment (χ 2 = 18.423, df = 1, P < 0.001) (Figure 3).…”

Section: Breeding Systemsupporting

confidence: 77%

“…Its attractiveness for Y. nigrimenta Blyth is due to the copious production of nectar and a long-lasting flowering period. We did not observe other pollinators, e.g., A. cerana Fabricius (Ren et al, 2016), so this is the first study to suggest Y. nigrimenta Blyth as a pollinator of B. hancei Hook.f. Although bird pollination is best known in hummingbirds, sunbirds, and honeyeaters, it also occurs on an opportunistic basis in a varied assortment of birds (Ortega-Olivencia et al, 2005).…”

Section: Discussionmentioning

confidence: 56%

“…This conclusion is consistent with another study of B. hancei Hook.f. by Ren et al (2016) in Guizhou Province. Autogamy provides reproductive assurance for plants during scarcity of pollinators (Lloyd and Schoen, 1992) or adverse environmental conditions (Vogler and Kalisz, 2001;Goodwillie et al, 2005).…”

Section: Discussionmentioning

confidence: 97%

“…flowers in our study site was Y. nigrimenta Blyth; we did not observe other pollinators during the entire flowering time. Ren et al (2016) reported that Apis cerana Fabricius (Apidae) was the only flower pollinator of B. hancei Hook.f., and visitation rates were very low. This may be due to observation in different areas (Sichuan and Guizhou) or during different times (December 2012 andMarch 2012).…”

Section: Discussionmentioning

confidence: 99%

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Yuhina nigrimenta Blyth (Zosteropidae) as a bird pollinator ofBrandisia hancei Hook.f. (Scrophulariaceae) during winter

Qian¹,

Li²,

Zhang³

et al. 2017

Turk J Bot

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Section: Breeding Systemsupporting

confidence: 77%

Section: Discussionmentioning

confidence: 56%

Section: Discussionmentioning

confidence: 97%

Section: Discussionmentioning

confidence: 99%

See 2 more Smart Citations

Yuhina nigrimenta Blyth (Zosteropidae) as a bird pollinator ofBrandisia hancei Hook.f. (Scrophulariaceae) during winter

Qian¹,

Li²,

Zhang³

et al. 2017

Turk J Bot

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“…Many hermaphroditic self-compatible plants separate male and female sexual functions spatially (herkogamy) and/or temporally (dichogamy) to promote outcrossing (Barrett, 2002). Reducing this separation is a hallmark of the evolution of self-fertilization and is correlated with higher autonomous selfing in many taxa (Brys, Geens, Beeckman, & Jacquemyn, 2013;Dole, 1992;Kalisz et al, 1999;Ren, Xu, Zhang, Ma, & Marczewski, 2016). Dichogamy and herkogamy can display marked variation among populations and significant heritability (Herlihy & Eckert, 2007;Holtsford & Ellstrand, 1992;Koski, Kuo, Niedermaier, & Galloway, 2018;Lennartsson, Oostermeijer, van Dijk, & den Nijs, 2000;Opedal et al, 2016), suggesting they evolve to influence the mating system.…”

Section: Introductionmentioning

confidence: 99%

Populations with greater flexibility in floral traits modify mating system in response to the pollinator environment

et al. 2018

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Mixed mating and variation in outcrossing rate among populations of the same species are common. Outcrossing can be affected by pollinator activity and floral traits that facilitate or impede autonomous self‐fertilization. However, the relative contribution of pollen limitation and evolved differences in the ability to self‐fertilize to variation in the mating system is poorly understood and can only be disentangled using an experimental approach. We placed arrays of plants from eight Campanula americana populations that varied in autonomous selfing ability (hereafter “autonomy”) in sun and shade habitats to create high‐ and low‐pollination environments. Floral visitors were observed and pollen limitation, dichogamy, herkogamy and pollen persistence within the flower were measured. Outcrossing rate was estimated for a subset of the arrays. Pollen limitation was over three times higher in the shade than the sun due to differences in pollinator visitation. Populations with high levels of autonomy displayed greater pollen persistence and dichogamy in the more pollen‐limited environments than in the high‐pollination environments. In these high‐autonomy populations, outcrossing rates were tightly associated with pollen limitation, with reduced outcrossing under strong pollen limitation. In contrast, populations with intermediate autonomy levels had less plastic floral traits and their outcrossing rates changed little with pollen limitation. Mating system was shaped by both the pollination environment and the magnitude of plasticity in floral traits. The experimental approach used here revealed that plasticity in floral traits provides the ability to adjust mating system in response to limited potential for outcrossing. The lack of plasticity in some populations could explain mismatches between pollinator activity and mating system in natural populations. Finally, flexibility in the mating system may help explain the prevalence of mixed mating. A http://onlinelibrary.wiley.com/doi/10.1111/1365-2435.13093/suppinfo is available for this article.

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The best of both worlds? A review of delayed selfing in flowering plants

Goodwillie

Weber

2018

American J of Botany

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In a series of seminal papers, David G. Lloyd (1979;Lloyd and Schoen, 1992) provided new insight into plant mating-system evolution by recognizing that the selective consequences of selfand cross-pollination and fertilization depend on the specifics of how and when they occur. In phenotypic models, Lloyd showed that the conditions that select for self-fertilization (selfing) facilitated by pollinators differ from those for selfing that occurs autonomously. Further, the selective consequences of autonomous selfing were shown to depend on its timing in anthesis in relation to cross-fertilization (outcrossing). The theory predicts that selfing that occurs after opportunities for outcrossing have passed (delayed selfing) should be selected under the broadest range of conditions.In general, selection of selfing is expected to be opposed by inbreeding depression, the reduced fitness of selfed progeny that results primarily from the expression of deleterious recessive alleles Charlesworth, 1987, Charlesworth andWillis, 2009). Counteracting the cost of inbreeding depression is the 50% genetic transmission advantage of selfing, which occurs because INVITED SPECIAL ARTICLE The best of both worlds? A review of delayed selfing in flowering plantsCarol Goodwillie 1,3 and Jennifer J. Weber PREMISE OF STUDY:In a seminal body of theory, Lloyd showed that the fitness consequences of selfing will depend on its timing in anthesis. Selfing that occurs after opportunities for outcrossing or pollen dispersal can provide reproductive assurance when pollinators are limited and is expected to incur little cost, even when inbreeding depression is high. As a result, delayed selfing is often interpreted as a "best-of-both-worlds" mating system that combines the advantages of selfing and outcrossing. METHODS:We surveyed 65 empirical studies of delayed selfing, recording floral mechanisms and examining information on inbreeding depression, autofertility, and other parameters to test the support for delayed selfing as a best-of-both-worlds strategy.KEY RESULTS: Phylogenetic distribution of the diverse floral mechanisms suggests that some basic floral structures may predispose plant taxa to evolve delayed selfing. Delayed selfing appears to serve as a best-of-both-worlds strategy in some but not all species. While the capacity for autonomous selfing is often high, it is lower, in some cases, than in related species with earlier modes of selfing. In other delayed-selfers, low inbreeding depression and reduced investment in corollas and pollen suggest limited benefits from outcrossing.CONCLUSIONS: Despite a growing literature on the subject, experimental evidence for delayed selfing is limited and major gaps in knowledge remain, particularly with respect to the stability of delayed selfing and the conditions that may favor transitions between delayed and earlier selfing. Finally, we suggest a potential role of delayed selfing in facilitating transitions from self-incompatibility to selfing.

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Growth discrepancy between filament and style facilitates self‐fertilization in Brandisia hancei (Paulowniaceae)

Cited by 8 publications

References 21 publications

Yuhina nigrimenta Blyth (Zosteropidae) as a bird pollinator ofBrandisia hancei Hook.f. (Scrophulariaceae) during winter

Yuhina nigrimenta Blyth (Zosteropidae) as a bird pollinator ofBrandisia hancei Hook.f. (Scrophulariaceae) during winter

Populations with greater flexibility in floral traits modify mating system in response to the pollinator environment

The best of both worlds? A review of delayed selfing in flowering plants

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