Risk Analysis of Gene Flow from Cultivated, Addictive, Social-Drug Plants to Wild Relatives

Campbell, Lesley G.; Blanchette, Christopher M.; Small, Ernest

doi:10.1007/s12229-019-09206-x

Cited by 9 publications

(12 citation statements)

References 201 publications

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“…For example, the allocation to biomass rather than seed production in sterile hybrid Miscanthus 9 giganteus is beneficial for bioenergy production (Lewandowski et al 2000) but may increase vegetative competition with native species. Knowledge of trait selection, place of origin, and evolutionary history during domestication are needed to understand how a biotype can survive and evolve outside of cultivation (Ross-Ibarra et al 2007;Campbell et al 2019). However, the native range of many cultivated biotypes, including 38 major food crops (Meyer et al 2012), is unclear.…”

Section: Domesticationmentioning

confidence: 99%

“…1). The intention of domestication is for plants to thrive in a particular environment that is usually managed (e.g., field, garden) but little evidence exists on how domestication influences dispersal ability and tolerance to environmental conditions in nearby natural areas (Denison et al 2003;Turcotte et al 2017;Campbell et al 2019). As with establishment, humans may limit the ability of domesticated biotypes to spread, such as when cultivars are bred for reduced reproduction or sterility (van Kleunen et al 2018), when there is selection for seed retention (Meyer et al 2012), or when best management practices preclude dispersal or establishment (Buddenhagen et al 2009).…”

Section: Spreadmentioning

confidence: 99%

“…Impacts of introduced genes in natural systems can be difficult to predict. For example, in cases of alteration for pest resistance, implications for invasion risk could depend on changes to toxicity and exposure of other trophic levels (e.g., herbivores) to the biotype (Campbell et al 2019).…”

Section: Food Crops Under Intensive Managementmentioning

confidence: 99%

“…De-domesticated genotypes also may experience fewer barriers to outcrossing with other genotypes of the non-native species in an introduced range or may hybridize with native species. Crop hybridization events occur most often when domesticated biotypes outcross with related agricultural weeds, other crops, or wild relatives (Linder et al 1998;Campbell et al 2019). These outcrosses can result in rapid evolutionary adaptation and greater invasion risk (Linder et al 1998;Ellstrand and Schierenbeck 2000).…”

Section: Food Crops Under Intensive Managementmentioning

confidence: 99%

“…For instance, the cultivated coffee species (Coffea liberica) can cross with caffeine-free species (C. pseudozanguebariae) allowing for transfer of the trait controlling caffeine production to offspring. This trait could spread through caffeine-free species if defense against herbivores is increased compared to the caffeine-free species (Campbell et al 2019). Hybridization of domesticated biotypes with other species (native or non-native), combined with high propagule pressure associated with agriculture, could promote invasion.…”

Section: Food Crops Under Intensive Managementmentioning

confidence: 99%

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Potential effects of domestication on non-native plant invasion risk

et al. 2021

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Plant domestication can increase propagule pressure and alter functional traits that may contribute to invasion risk, such as high productivity. Domesticated biotypes (i.e., any cultivar, variety, or other infraspecific taxa that have been domesticated) have a unique evolutionary history that often involves enhanced propagule pressure, selection of traits for human use, and cultural practices to increase establishment success. These elements can alter the invasion process from that of non-domesticated non-native species. Understanding which traits are consistently selected for, how strongly those traits are altered by selection, and in which cases they influence invasion risk would facilitate actions that reduce impacts of domesticated biotypes on natural and agricultural systems. We identified commonalities in trait selection and management intensity among groups of domesticated biotypes selected for particular purposes (e.g., food, ornamental, and biomass production) that indicate predictable invasion risk and management approaches for biotypes from each group. Broadly, food crops that rely on high intensity management tend to have relatively low invasion risk, while biotypes developed for ornamental purposes are subject to more variable management intensity and may have greater risk of establishment and spread in natural areas without cultural practices (e.g., weeding, Communicated by Scott J Meiners.

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Section: Domesticationmentioning

confidence: 99%

Section: Spreadmentioning

confidence: 99%

Section: Food Crops Under Intensive Managementmentioning

confidence: 99%

Section: Food Crops Under Intensive Managementmentioning

confidence: 99%

Section: Food Crops Under Intensive Managementmentioning

confidence: 99%

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Potential effects of domestication on non-native plant invasion risk

et al. 2021

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Correlates of hybridization in plants

et al. 2019

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Hybridization is a biological phenomenon increasingly recognized as an important evolutionary process in both plants and animals, as it is linked to speciation, radiation, extinction, range expansion and invasion, and allows for increased trait diversity in agricultural and horticultural systems. Estimates of hybridization frequency vary across taxonomic groups, but causes of this variation are unknown. Here, we ask on a global scale whether hybridization is linked to any of 11 traits related to plant life history, reproduction, genetic predisposition, and environment or opportunity. Given that hybridization is not evenly distributed across the plant tree of life, we use phylogenetic generalized least squares regression models and phylogenetic path analysis to detect statistical associations between hybridization and plant traits at both the family and genus levels. We find that perenniality and woodiness are each weakly associated with an increased frequency of hybridization in univariate analyses, but path analysis suggests that the direct linkage is between perenniality and increased hybridization (with woodiness having only an indirect relationship with hybridization via perenniality). Weak associations between higher rates of hybridization and higher outcrossing rates, abiotic pollination syndromes, vegetative reproductive modes, larger genomes, and less variable genome sizes are detectable in some cases but not others. We argue that correlational evidence at the global scale, such as that presented here, provides a robust framework for forming hypotheses to examine and test drivers of hybridization at a more mechanistic level.

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Non-native flora changes in rural gardens of China: the role of tourism

Yang,

Zhang,

Geng

2024

Discov Sustain

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Human cultivation facilitates the naturalization and subsequent invasion of non-native plant species through, for example, protection from predators or reducing environmental stochasticity. With the development of tourism, non-native plant species have been increasingly introduced into rural home gardens for landscape greening and amenity planting. However, few studies have examined non-native flora in rural home gardens, and in particular the importance of tourism in determining changes of garden non-native flora has not been scrutinized. In this study, we investigated non-native plant species in 135 home gardens across five rural tourism villages in tropical China. Attributes related to garden or household characteristics were also collected through interviews and questionnaires. A distance-based redundancy analysis was then performed to reveal the relationships between the non-native species composition and garden attributes. A total of 338 non-native plant species were recorded in the surveyed gardens. Among them, the majority (63%) were ornamentals, whereas 19% were for nutritional uses and 12% were spontaneous weeds. Gardening preference and distance to tourist attractions governed the non-native compositions, with gardens preferring cultural (ornamental) cultivation or gardens close to tourist attractions having more non-native species. These results highlight an increasing role of tourism in promoting non-native cultivation in rural gardens. Recommendations for species risk assessment, trade and supply regulation, and proper garden management are provided to help harness plant invasion along tourism development in rural China and other regions around the world.

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Risk Analysis of Gene Flow from Cultivated, Addictive, Social-Drug Plants to Wild Relatives

Cited by 9 publications

References 201 publications

Potential effects of domestication on non-native plant invasion risk

Potential effects of domestication on non-native plant invasion risk

Correlates of hybridization in plants

Non-native flora changes in rural gardens of China: the role of tourism

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