Ploidy level interacts with population size and habitat conditions to determine the degree of herbivory damage in plant populations

Münzbergová, Zuzana

doi:10.1111/j.2006.0030-1299.15286.x

Cited by 53 publications

(52 citation statements)

References 53 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The logic behind the latter is that-in altering patterns of plant growth, secondary chemistry production and habitat distribution-polyploidization may influence interactions with animals, especially specialist herbivores and pollinators [9,11,12,159]. Explicit research efforts on these possibilities emerged in the late 1990s and 2000s [151,188,189,[192][193][194]209,212,[214][215][216]. For example, John N. Thompson and colleagues examined insect floral visitors on diploid versus autotetraploid H. grossulariifolia and found substantial differences between the cytotypes-especially for moths in the genus Greya and Eupithecia [151,[192][193][194].…”

Section: (B) Broadening Horizons (2000s To Present)mentioning

confidence: 99%

Ecological studies of polyploidy in the 100 years following its discovery

Ramsey

2014

Phil. Trans. R. Soc. B

249

237

View full text Add to dashboard Cite

Polyploidy is a mutation with profound phenotypic consequences and thus hypothesized to have transformative effects in plant ecology. This is most often considered in the context of geographical and environmental distributions—as achieved from divergence of physiological and life-history traits—but may also include species interactions and biological invasion. This paper presents a historical overview of hypotheses and empirical data regarding the ecology of polyploids. Early researchers of polyploidy (1910s–1930s) were geneticists by training but nonetheless savvy to its phenotypic effects, and speculated on the importance of genome duplication to adaptation and crop improvement. Cytogenetic studies in the 1930s–1950s indicated that polyploids are larger (sturdier foliage, thicker stems and taller stature) than diploids while cytogeographic surveys suggested that polyploids and diploids have allopatric or parapatric distributions. Although autopolyploidy was initially regarded as common, influential writings by North American botanists in the 1940s and 1950s argued for the principle role of allopolyploidy; according to this view, genome duplication was significant for providing a broader canvas for hybridization rather than for its phenotypic effects per se . The emphasis on allopolyploidy had a chilling effect on nascent ecological work, in part due to taxonomic challenges posed by interspecific hybridization. Nonetheless, biosystematic efforts over the next few decades (1950s–1970s) laid the foundation for ecological research by documenting cytotype distributions and identifying phenotypic correlates of polyploidy. Rigorous investigation of polyploid ecology was achieved in the 1980s and 1990s by population biologists who leveraged flow cytometry for comparative work in autopolyploid complexes. These efforts revealed multi-faceted ecological and phenotypic differences, some of which may be direct consequences of genome duplication. Several classical hypotheses about the ecology of polyploids remain untested, however, and allopolyploidy—regarded by most botanists as the primary mode of genome duplication—is largely unstudied in an ecological context.

show abstract

Section: (B) Broadening Horizons (2000s To Present)mentioning

confidence: 99%

Ecological studies of polyploidy in the 100 years following its discovery

Ramsey

2014

Phil. Trans. R. Soc. B

249

237

View full text Add to dashboard Cite

show abstract

“…None of the studies of S. gigantea as an invasive species has taken account of ploidy level, although this factor has considerable implications for growth performance (Bretagnolle and Thompson 1996;Maceira et al 1993), life history (Müller 1989) and plant-enemy interactions (Halverson et al 2008;Münzbergova 2006). In the native range of S. gigantea, plants of different ploidy levels are mainly separated by large distances (Schlaepfer et al 2008a), which could indicate differing habitat preferences.…”

Section: Introductionmentioning

confidence: 99%

Why only tetraploid Solidago gigantea (Asteraceae) became invasive: a common garden comparison of ploidy levels

2010

View full text Add to dashboard Cite

Many studies have compared the growth of plants from native and invasive populations, but few have considered the role of ploidy. In its native range in North America, Solidago gigantea Aiton (Asteraceae) occurs as a diploid, tetraploid and hexaploid, with considerable habitat differentiation and geographic separation amongst these ploidy levels. In the introduced range in Europe, however, only tetraploid populations are known. We investigated the growth performance and life history characteristics of plants from 12 European and 24 North American (12 diploid, 12 tetraploid) populations in a common garden experiment involving two nutrient and two calcium treatments. Twelve plants per population were grown in pots for two seasons. We measured 24 traits related to leaf nutrients, plant size, biomass production and phenology as well as sexual and vegetative reproduction. Native diploid plants had a higher specific leaf area and higher leaf nutrient concentrations than native tetraploids, but tetraploids produced many more shoots and rhizomes. Diploids grown with additional calcium produced less biomass, whereas tetraploids were not affected. European plants were less likely to flower and produced smaller capitulescences than North American tetraploids, but biomass production and shoot and rhizome number did not differ. We conclude that a knowledge of ploidy level is essential in comparative studies of invasive and native populations. While clonal growth is important for the invasion success of tetraploid S. gigantea, its potential was not acquired by adaptation after introduction but by evolutionary processes in the native range.

show abstract

“…Interactions with herbivores are expected to vary with cytotype because of phenotypic changes associated with polyploidy, but this area has received little study (reviewed in refs. [8][9][10][11]. Plant origin, from either the native range or an introduced range, should also influence herbivores.…”

mentioning

confidence: 99%

Influence of polyploidy on insect herbivores of native and invasive genotypes ofSolidago gigantea(Asteraceae)

Hull-Sanders

Johnson

Owen

et al. 2009

Plant Signaling & Behavior

View full text Add to dashboard Cite

Herbivores are sensitive to the genetic structure of plant populations, as genetics underlies plant phenotype and host quality. Polyploidy is a widespread feature of angiosperm genomes, yet few studies have examined how polyploidy influences herbivores. Introduction to new ranges, with consequent changes in selective regimes, can lead to evolution of changes in plant defensive characteristics and also affect herbivores. Here, we examine how insect herbivores respond to polyploidy in Solidago gigantea, using plants derived from both the native range (USA) and introduced range (Europe). S. gigantea has three cytotypes in the US, with two of these present in Europe. We performed bioassays with generalist (Spodoptera exigua) and specialist (Trirhabda virgata) leaf-feeding insects. Insects were reared on detached leaves (Spodoptera) or potted host plants (Trirhabda) and mortality and mass were measured. Trirhabda larvae showed little variation in survival or pupal mass attributable to either cytotype or plant origin. Spodoptera larvae were more sensitive to both cytotype and plant origin: they grew best on European tetraploids and poorly on US diploids (high mortality) and US tetraploids (low larval mass). These results show that both cytotype and plant origin influence insect herbivores, but that generalist and specialist insects may respond differently.Polyploidy, or the possession of more than two sets of homologous chromosomes, is a fundamental force in angiosperm evolution.

show abstract

Ploidy level interacts with population size and habitat conditions to determine the degree of herbivory damage in plant populations

Cited by 53 publications

References 53 publications

Ecological studies of polyploidy in the 100 years following its discovery

Ecological studies of polyploidy in the 100 years following its discovery

Why only tetraploid Solidago gigantea (Asteraceae) became invasive: a common garden comparison of ploidy levels

Influence of polyploidy on insect herbivores of native and invasive genotypes ofSolidago gigantea(Asteraceae)

Contact Info

Product

Resources

About