Morphological divergence between wild and cultivated chaya (Cnidoscolus aconitifolius) (Mill.) I.M. Johnst

Munguía-Rosas, Miguel A.; Jácome‐Flores, Miguel E.; Bello-Bedoy, Rafael; Solís-Montero, Virginia; Ochoa-Estrada, Ernesto

doi:10.1007/s10722-019-00790-w

Cited by 22 publications

(50 citation statements)

References 25 publications

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“…Wild chaya have far more urticant trichomes on the stems, leaves and fruits than the domesticated plants (Parra‐Tabla et al . 2004; Munguía‐Rosas et al 2019). Cultivation is usually achieved from stem cuttings in home gardens (Munguía‐Rosas et al .…”

Section: Methodsmentioning

confidence: 99%

“…The leaves are deciduous, and the leaf area is larger in wild individuals than in cultivated plants (Sol ıs-Montero 2019). Wild chaya have far more urticant trichomes on the stems, leaves and fruits than the domesticated plants (Parra-Tabla et al 2004;Mungu ıa-Rosas et al 2019). Cultivation is usually achieved from stem cuttings in home gardens (Mungu ıa-Rosas et al 2019).…”

Section: Study Speciesmentioning

confidence: 99%

“…Here, we assessed pre-and post-pollination RIB in chaya (Cnidoscolus aconitifolius; Euphorbiaceae) in its domestication centre in the Yucatan Peninsula (Ross-Ibarra & Molina-Cruz 2002). In this area, wild and domesticated plants can grow together in home gardens (Mungu ıa-Rosas et al 2019). Wild plants may also grow in disturbed vegetation, sometimes only a few meters away from domesticated plants (Mungu ıa-Rosas et al 2019).…”

Section: Introductionmentioning

confidence: 99%

“…In this area, wild and domesticated plants can grow together in home gardens (Munguía‐Rosas et al . 2019). Wild plants may also grow in disturbed vegetation, sometimes only a few meters away from domesticated plants (Munguía‐Rosas et al .…”

Section: Introductionmentioning

confidence: 99%

“…Wild plants may also grow in disturbed vegetation, sometimes only a few meters away from domesticated plants (Munguía‐Rosas et al . 2019). The main pollinators of chaya are bees and butterflies (Arceo‐Gómez et al .…”

Section: Introductionmentioning

confidence: 99%

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Reproductive isolation between wild and domesticated chaya (Cnidoscolus aconitifolius) in sympatry

Munguía‐Rosas

Jácome‐Flores

2020

Plant Biol J

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• Reproductive isolation is a necessary condition for plant domestication in their domestication centre where crops co-occur with their wild progenitors. However, the identification of reproductive barriers and their relative contribution to reproductive isolation have been overlooked in plants under domestication. • We assessed pre-and post-pollination reproductive barriers and their relative contribution to reproductive isolation between wild and domesticated chaya (Cnidoscolus aconitifolius) in its domestication centre. • We found that wild and domesticated chaya both exhibit a high degree of reproductive isolation. However, the reproductive isolation barriers exhibited some asymmetry: while pre-pollination barriers (differential pollen production and pollinator specificity) were only detected in wild plants, post-pollination barriers (pollen-pistil incompatibility and/or failure to set fruit) were observed in both wild and domesticated plants. • We conclude that complete reproductive isolation has evolved in sympatry in co-occurring domesticated and wild chaya.

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Section: Methodsmentioning

confidence: 99%

Section: Study Speciesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Reproductive isolation between wild and domesticated chaya (Cnidoscolus aconitifolius) in sympatry

Munguía‐Rosas

Jácome‐Flores

2020

Plant Biol J

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Morphological and genetic evidence suggest gene flow among native and naturalized mint species

Olofsson,

Tyler,

Dunning

et al. 2024

American J of Botany

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PremiseCultivation and naturalization of plants beyond their natural range can bring previously geographically isolated taxa together, increasing the opportunity for hybridization, the outcomes of which are not predictable. Here, we explored the phenotypic and genomic effects of interspecific gene flow following the widespread cultivation of Mentha spicata (spearmint), M. longifolia, and M. suaveolens.MethodsWe morphologically evaluated 155 herbarium specimens of three Mentha species and sequenced the genomes of a subset of 93 specimens. We analyzed the whole genomes in a population and the phylogenetic framework and associated genomic classifications in conjunction with the morphological assessments.ResultsThe allopolyploid M. spicata, which likely evolved in cultivation, had altered trichome characters, that is possibly a product of human selection for a more palatable plant or a byproduct of selection for essential oils. There were signs of genetic admixture between mints, including allopolyploids, indicating that the reproductive barriers between Mentha species with differences in ploidy are likely incomplete. Still, despite gene flow between species, we found that genetic variants associated with the cultivated trichome morphology continue to segregate.ConclusionsAlthough hybridization, allopolyploidization, and human selection during cultivation can increase species richness (e.g., by forming hybrid taxa), we showed that unless reproductive barriers are strong, these processes can also result in mixing of genes between species and the potential loss of natural biodiversity.

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Partial and asymmetrical reproductive isolation between two sympatric tropical shrub species: Cnidoscolus aconitifolius and C. souzae (Euphorbiaceae)

Munguía‐Rosas,

Parra‐Tabla,

Rodríguez‐Domínguez

2023

Ecology and Evolution

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Reproductive isolation is conferred by several barriers that occur at different stages of reproduction. Comprehensive reviews on the topic have identified that barriers occurring prior to zygote formation are often stronger than those that occur afterward. However, the overrepresentation of temperate perennial herbs in the current literature precludes any generalization of this pattern to plants that present other life forms and patterns of distribution. Here, we assessed reproductive isolation barriers and their absolute contribution to reproductive isolation and asymmetry in Cnidoscolus aconitifolius and C. souzae, two closely related tropical shrub species that co‐occur on the Yucatan peninsula. The reproductive barriers assessed were phenological mismatch, pollinator differentiation, pollen–pistil incompatibility (three pre‐zygotic barriers), fruit set failure, and seed unviability (post‐zygotic barriers). Reproductive isolation between the study species was found to be complete in the direction C. aconitifolius to C. souzae, but only partial in the opposite direction. One post‐zygotic barrier was the strongest example. Most barriers, particularly the pre‐zygotic examples, were asymmetrical and predicted the direction of heterospecific pollen flow and hybrid formation from C. souzae to C. aconitifolius. Both parental species, as well as the hybrids, were diploid and had a chromosome number 2n = 36. More studies with tropical woody perennials are required to fully determine whether this group of plants consistently shows stronger post‐zygotic barriers.

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Morphological divergence between wild and cultivated chaya (Cnidoscolus aconitifolius) (Mill.) I.M. Johnst

Cited by 22 publications

References 25 publications

Reproductive isolation between wild and domesticated chaya (Cnidoscolus aconitifolius) in sympatry

Reproductive isolation between wild and domesticated chaya (Cnidoscolus aconitifolius) in sympatry

Morphological and genetic evidence suggest gene flow among native and naturalized mint species

Partial and asymmetrical reproductive isolation between two sympatric tropical shrub species: Cnidoscolus aconitifolius and C. souzae (Euphorbiaceae)

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