Plant mating systems in a changing world

Eckert, Christopher G.; Kalisz, Susan; Geber, Monica A.; Sargent, Risa D.; Elle, Elizabeth; Cheptou, Pierre‐Olivier; Goodwillie, Carol; Johnston, Mark O.; Kelly, John K.; Moeller, David A.; Porcher, Emmanuelle; Ree, Richard H.; Vallejo-Marin, Mario; Winn, Alice A.

doi:10.1016/j.tree.2009.06.013

Cited by 491 publications

(642 citation statements)

References 78 publications

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“…2005; Eckert et al. 2010). Understanding the processes by which pollinator and mate limitations affect plant reproduction has thus become a major scientific challenge, especially as plant and pollinator populations are endangered by global changes (Aguilar et al.…”

Section: Introductionmentioning

confidence: 99%

“…Such situations may have various consequences for the pollen transported and deposited by pollinators (hereafter referred to as “pollen transfer”) and subsequent pollen limitation (Eckert et al. 2010; Thomann et al. 2013).…”

Section: Introductionmentioning

confidence: 99%

“…For example, Eckert et al. (2010) hypothesized that pollinator limitation, when occurring without mate limitation, likely affects pollen load size (including conspecific and heterospecific pollen), resulting in high mean pollen limitation driven by insect visit scarcity, whereas mate limitation, when occurring without pollinator limitation, likely affects the proportion of conspecific pollen in the pollen load, also resulting in high mean pollen limitation but driven by low mate density.…”

Section: Introductionmentioning

confidence: 99%

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Pollen transfer in fragmented plant populations: insight from the pollen loads of pollinators and stigmas in a mass‐flowering species

Delmas¹,

Fort

Escaravage

et al. 2016

Ecology and Evolution

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Pollinator and/or mate scarcity affects pollen transfer, with important ecological and evolutionary consequences for plant reproduction. However, the way in which the pollen loads transported by pollinators and deposited on stigmas are affected by pollination context has been little studied. We investigated the impacts of plant mate and visiting insect availabilities on pollen transport and receipt in a mass‐flowering and facultative autogamous shrub (Rhododendron ferrugineum). First, we recorded insect visits to R. ferrugineum in plant patches of diverse densities and sizes. Second, we analyzed the pollen loads transported by R. ferrugineum pollinators and deposited on stigmas of emasculated and intact flowers, in the same patches. Overall, pollinators (bumblebees) transported much larger pollen loads than the ones found on stigmas, and the pollen deposited on stigmas included a high proportion of conspecific pollen. However, comparing pollen loads of emasculated and intact flowers indicated that pollinators contributed only half the conspecific pollen present on the stigma. At low plant density, we found the highest visitation rate and the lowest proportion of conspecific pollen transported and deposited by pollinators. By contrast, at higher plant density and lower visitation rate, pollinators deposited larger proportion of conspecific pollen, although still far from sufficient to ensure that all the ovules were fertilized. Finally, self‐pollen completely buffered the detrimental effects on pollination of patch fragmentation and pollinator failure. Our results indicate that pollen loads from pollinators and emasculated flowers should be quantified for an accurate understanding of the relative impacts of pollinator and mate limitation on pollen transfer in facultative autogamous species.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Pollen transfer in fragmented plant populations: insight from the pollen loads of pollinators and stigmas in a mass‐flowering species

Delmas¹,

Fort

Escaravage

et al. 2016

Ecology and Evolution

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“…For example, a plastic decrease in the ratio of chasmogamous (outcrossing) and cleistogamous (selfing) flowers of Viola praemorsa allows that species to compensate for a lack of pollinators (Jones et al 2013). Reduction of herkogamy (i.e., stigma-anther separation) and increased pollen self-compatibility in response to stress appear to aid colonization of new habitats by promoting selfing (Levin 2010), which is likely to be important when humans disturb plant habitats (Eckert et al 2010). Such cases are expected to decrease offspring variation and reduce outcrossing depression; mating with unknown gametes might lead to the offspring losing the ability to thrive in the challenging environment.…”

Section: Discussionmentioning

confidence: 99%

Spore Germination Determines Yeast Inbreeding according to Fitness in the Local Environment

Miller

Greig

2015

The American Naturalist

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JSTOR is a not-for-profit service that helps scholars, researchers, and students discover, use, and build upon a wide range of content in a trusted digital archive. We use information technology and tools to increase productivity and facilitate new forms of scholarship. For more information about JSTOR, please contact support@jstor.org.. abstract: Gene combinations conferring local fitness may be destroyed by mating with individuals that are adapted to a different environment. This form of outbreeding depression provides an evolutionary incentive for self-fertilization. We show that the yeast Saccharomyces paradoxus tends to self-fertilize when it is well adapted to its local environment but tends to outcross when it is poorly adapted. This behavior could preserve combinations of genes when they are beneficial and break them up when they are not, thereby helping adaptation. Haploid spores must germinate before mating, and we found that fitter spores had higher rates of germination across a 24-hour period, increasing the probability that they mate with germinated spores from the same meiotic tetrad. The ability of yeast spores to detect local conditions before germinating and mating suggests the novel possibility that these gametes directly sense their own adaptation and plastically adjust their breeding strategy accordingly.

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“…One of the evolutionary processes that lead to speciation of this family is the frequently observed transition to spontaneous autogamy (Pedersen and Ehlers, 2000;Bateman, 2001;Charlesworth, 2006). Spontaneous selfpollination is sometimes observed in animalpollinated plants when the environment is subject to changes such as anthropogenic habitat fragmentation (Barrett and Shore, 1989;Eckert et al, 2009) or periods of unfavorable climatic conditions (Liu et al, 2006). This transition has also been recorded in some plants that have migrated to new areas outside their previous range (Catling, 1990;Etcheverry et al, 2003;Barrett et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

The Ability of Spontaneous Autogamy in Four Orchid Species: Cephalanthera Rubra, Neottia Ovata, Gymnadenia Conopsea, and Platanthera Bifolia

Tałałaj¹,

Ostrowiecka²,

Włostowska³

et al. 2017

Acta Biologica Cracoviensia S. Botanica

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The breeding system in Orchidaceae generates many questions about the selfing potential of its representatives. We investigated the ability of spontaneous autogamy of four orchid species: Cephalanthera rubra and Neottia ovata of the Neottieae tribe and Gymnadenia conopsea and Platanthera bifolia of the Orchideae tribe. These species represent diverse specializations of the gynostemium architecture. The self-compatibility and properties of autogamous seeds were determined in a bagging experiment and seed development analysis. After induced autogamy, a high level of fruiting (80-100%) was noted in all of the four study species. C. rubra, N. ovata, and G. conopsea are completely self-compatible, and P. bifolia is suggested to be partially self-compatible. If autogamy occurred, inbreeding depression and resource limitation on seed development appeared only in the two Orchideae species. Independent of flower specialization, both Neottieae species and P. bifolia were completely allogamous, whereas G. conopsea could be facultatively autogamous.

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Plant mating systems in a changing world

Cited by 491 publications

References 78 publications

Pollen transfer in fragmented plant populations: insight from the pollen loads of pollinators and stigmas in a mass‐flowering species

Pollen transfer in fragmented plant populations: insight from the pollen loads of pollinators and stigmas in a mass‐flowering species

Spore Germination Determines Yeast Inbreeding according to Fitness in the Local Environment

The Ability of Spontaneous Autogamy in Four Orchid Species: Cephalanthera Rubra, Neottia Ovata, Gymnadenia Conopsea, and Platanthera Bifolia

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