Invasive congeners are unlikely to hybridize with native Hawaiian <i>Bidens</i> (Asteraceae)

Knope, Matthew L.; Pender, Richard; Crawford, Daniel J.; Wieczorek, Ania M.

doi:10.3732/ajb.1300018

Cited by 13 publications

(11 citation statements)

References 43 publications

(77 reference statements)

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“…Hawaiian Bidens (Carr 1987), in which low molecular variation is consistent with expectations of reduced genetic variation due to selfing, but might also be attributed to its recent and rapid origin (Helenurm and Ganders 1985;Knope et al 2012b;Knope et al 2013;Knope et al 2020a).…”

Section: Schenk Adaptive Radiations Of Plants 21mentioning

confidence: 52%

The Next Generation of Adaptive Radiation Studies in Plants

Schenk

2021

International Journal of Plant Sciences

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Adaptive radiation is an evolutionary process that has been promulgated in some clades as an explanation for species richness and disparity in morphological forms across ecological gradients. Studies designed to elucidate the mechanisms and causes of adaptive radiation have largely focused on animal systems, but plant clades have tremendous potential to answer elusive questions regarding adaptive radiations. The goals of this review are to (1) produce a synthetic understanding of adaptive radiations through studies that have investigated plants systems; (2) critically reflect upon contemporary studies to highlight how approaches have been successful as well as limiting; and (3) outline gaps in our understanding of adaptive radiations, while emphasizing that plant have ideal characteristics to answer future questions.Thirty-five adaptive radiation clades are highlighted, of which several are supported with multiple lines of evidence, such as the Hawaiian silverswords, Hawaiian lobeliads, and columbines. Plant adaptive radiation examples are commonly insular, diversified in the Miocene or Pliocene, are associated with dispersal mediated ecological opportunities, are polyploids, and have experienced hybridization. From those studies, a general model of plant insular adaptive radiation is proposed. The limitations of the current reliance of phylogenetic comparative approaches to detect adaptive radiations is considered, and an integrative approach that includes phylogenetics, genomics, and evolutionary ecology is advocated. The review concludes with a call for additional studies that are needed before we are to fully understand adaptive radiations, and they include: (1) How do biological interactions influence adaptive radiations, (2) what role does environmental change play in generating ecological opportunity, (3) how does genetic evolution drive adaptive radiation, (4) do models adequately

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Section: Schenk Adaptive Radiations Of Plants 21mentioning

confidence: 52%

The Next Generation of Adaptive Radiation Studies in Plants

Schenk

2021

International Journal of Plant Sciences

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“…Based on morphological and molecular (ISSR) data analysis, these authors concluded that low hybridogenic activity existed with B. frondosa. Knope et al (2013) also studied the hybridization between alien and native Bidens species. They hybridized B. alba and B. pilosa with nine native Hawaiian species and did not obtain viable hybrids.…”

Section: Discussionmentioning

confidence: 99%

Genetic diversity of populations of Bidens genera invasive and native species in Lithuania

Vyšniauskienė

Rančelienė

Naugžemys

et al. 2018

Zemdirbyste-Agriculture

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River riparian ecosystems deteriorate because of anthropogenic factors that are related to industry, intensive agriculture and tourism. Two native species, Bidens tripartita and B. cernua, are weeds widespread in Lithuania on river banks and other habitats. An alien species, B. frondosa, is also widespread in the same habitats. We investigated the genetic diversity of B. frondosa, compared its population structure to that of related species and assessed the possibility of genetic interaction between B. frondosa and native congeners. Genetic analysis of populations was based on inter-simple sequence repeats (ISSR) polymorphism. Our results revealed high genetic differentiation in the B. frondosa populations (48.2%) and high genotypic diversity (i = 0.99). Bayesian cluster analysis using the program Structure revealed signs of gene flow between B. frondosa and the native species; however, principal coordinate analysis did not support this result. Our results do not indicate the role of interspecific hybridization in the invasiveness of B. frondosa.

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“…For radiations involving slowto-speciate taxa such as Hawaiian Metrosideros trees, the presence of multiple morphologically distinct yet weakly genetically diverged forms may result from the lack of persistent divergent selection on unstable volcanic islands (Stacy et al 2020) and species boundaries will likely disappear through introgression in this highly interfertile group. Likewise in Hawaiian Bidens, species are generally fully isolated either by geography (on different islands) and/or by habitat (and pollination syndrome for the one bird pollinated B. cosmoides on Kauai), but when secondary contact occurs the species can meld back together into hybrid swarms since intrinsic reproductive isolation has not yet occurred amongst any of the endemic Hawaiian species tested (Ganders and Nagata 1984;Knope et al 2013;Knope et al 2020). However, all Hawaiian species tested are intrinsically isolated, likely by genetic incompatibilities, from taxa in their hypothesized Central American sister clade (Knope et al 2013), and this reproductive incompatibility appears to have arisen within the past ~2 My (Knope et al 2012(Knope et al , 2020.…”

Section: Common Denominators Across Adaptive Radiations-questions and Answersmentioning

confidence: 99%

Comparing Adaptive Radiations Across Space, Time, and Taxa

Gillespie

Bennett

Meester

et al. 2020

Journal of Heredity

185

163

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Adaptive radiation plays a fundamental role in our understanding of the evolutionary process. However, the concept has provoked strong and differing opinions concerning its definition and nature among researchers studying a wide diversity of systems. Here, we take a broad view of what constitutes an adaptive radiation, and seek to find commonalities among disparate examples, ranging from plants to invertebrate and vertebrate animals, and remote islands to lakes and continents, to better understand processes shared across adaptive radiations. We surveyed many groups to evaluate factors considered important in a large variety of species radiations. In each of these studies, ecological opportunity of some form is identified as a prerequisite for adaptive radiation. However, evolvability, which can be enhanced by hybridization between distantly related species, may play a role in seeding entire radiations. Within radiations, the processes that lead to speciation depend largely on (1) whether the primary drivers of ecological shifts are (a) external to the membership of the radiation itself (mostly divergent or disruptive ecological selection) or (b) due to competition within the radiation membership (interactions among members) subsequent to reproductive isolation in similar environments, and (2) the extent and timing of admixture. These differences translate into different patterns of species accumulation and subsequent patterns of diversity across an adaptive radiation. Adaptive radiations occur in an extraordinary diversity of different ways, and continue to provide rich data for a better understanding of the diversification of life.

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Invasive congeners are unlikely to hybridize with native Hawaiian Bidens (Asteraceae)

Cited by 13 publications

References 43 publications

The Next Generation of Adaptive Radiation Studies in Plants

The Next Generation of Adaptive Radiation Studies in Plants

Genetic diversity of populations of Bidens genera invasive and native species in Lithuania

Comparing Adaptive Radiations Across Space, Time, and Taxa

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