Floral biology and breeding system of Impatiens balfourii (Balsaminaceae): An exotic species in extension in temperate areas

Jacquemart, Anne‐Laure; Somme, Laurent; Colin, C.; Quinet, Muriel

doi:10.1016/j.flora.2015.06.001

Cited by 19 publications

(12 citation statements)

References 51 publications

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“…; Jacquemart et al . ). Our cross‐pollination experiment showed a higher fruit set of cross‐pollinated than of self‐pollinated flowers within the same species (Fig.…”

Section: Discussionmentioning

confidence: 97%

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Breeding systems in Balsaminaceae in relation to pollen/ovule ratio, pollination syndromes, life history and climate zone

et al. 2018

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Pollen/ovule (P/O) ratios are often used as proxy for breeding systems. Here, we investigate the relations between breeding systems and P/O ratios, pollination syndromes, life history and climate zone in Balsaminaceae. We conducted controlled breeding system experiments (autonomous and active self-pollination and outcrossing tests) for 65 Balsaminaceae species, analysed pollen grain and ovule numbers and evaluated the results in combination with data on pollination syndrome, life history and climate zone on a phylogenetic basis. Based on fruit set, we assigned three breeding systems: autogamy, self-compatibility and self-incompatibility. Self-pollination led to lower fruit set than outcrossing. We neither found significant P/O differences between breeding systems nor between pollination syndromes. However, the numbers of pollen grains and ovules per flower were significantly lower in autogamous species, but pollen grain and ovule numbers did not differ between most pollination syndromes. Finally, we found no relation between breeding system and climate zone, but a relation between climate zone and life history. In Balsaminaceae reproductive traits can change under resource or pollinator limitation, leading to the evolution of autogamy, but are evolutionary rather constant and not under strong selection pressure by pollinator guild and geographic range changes. Colonisation of temperate regions, however, is correlated with transitions towards annual life history. Pollen/ovule-ratios, commonly accepted as good indicators of breeding system, have a low predictive value in Balsaminaceae. In the absence of experimental data on breeding system, additional floral traits (overall pollen grain and ovule number, traits of floral morphology) may be used as proxies.

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“…; Jacquemart et al . ). Our cross‐pollination experiment showed a higher fruit set of cross‐pollinated than of self‐pollinated flowers within the same species (Fig.…”

Section: Discussionmentioning

confidence: 97%

“…; Jacquemart et al . ; Table S1). For I. inaperta, I. hammarbyoides and I. humillima, we could not conduct the active self‐pollination test since during the study period the plants mainly produced cleistogamous flowers, developing directly into fruits.…”

Section: Methodsmentioning

confidence: 99%

Breeding systems in Balsaminaceae in relation to pollen/ovule ratio, pollination syndromes, life history and climate zone

et al. 2018

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“…The main mechanism of the negative impact of alien balsams is displacement of native flora in the habitats they invade [56,57]. This is particularly significant in the case of I. glandulifera, as the species competes successfully with native plants thanks to its high attractiveness for pollinators, high reproductive capacity [58,59], and antimicrobial, antioxidant, and allelopathic potential [60,61]. Allelopathic compounds, for example, may change soil properties and decrease the arbuscular mycorrhiza colonization on tree saplings, which may in turn negatively affect the performance of a tree (e.g., Acer pseudoplatanus) [62].…”

Section: Species Selected For Studymentioning

confidence: 99%

Do local enemies attack alien and native Impatiens alike?

2017

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The enemy release hypothesis (ERH) attributes the invasive behavior of some alien species to decreased pressure from natural enemies, as they have been left behind in the hosts' native range. The majority of research supports this idea, but some studies confirm it only partially or even contradict it. Here, we present the results of ERH tests of three Impatiens species studied in southern Poland in 2010-2011. Two of them are alien and invasive in Europe (Impatiens glandulifera, I. parviflora) and one is native (I. noli-tangere). We compared the three species in terms of the percentage of all leaves showing symptoms of disease and/or damage, and also the number of pests recorded on the monitored plants.In 1071 individual plant controls, we assessed 17 180 leaves, 7552 of which showed symptoms of disease/damage, and we recorded 5721 invertebrates, 5220 of them were pests. Rusts and spots were the predominant symptoms and Aphidoidea were the dominant group of pests. Comparisons of the two alien and one native Impatiens did not confirm the ERH in 90% of the performed tests. Most of the differences between the species were not significant, and most of the significant ones contradicted the ERH. The only results confirming the ERH were found in comparisons between I. parviflora and I. noli-tangere. The tests between two alien species showed that I. parviflora was under higher pest pressure, while I. glandulifera had more disease and damage symptoms, thus, plant-enemy relations differed between the two balsams. In summary, the presented results add evidence that the success of some alien species may depend on factors related to biotic and/or abiotic conditions in ways that are not explained by the enemy release hypothesis.

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“…Impatiens has been a subject of numerous studies regarding distribution (Zhou et al, 2019), ecology (Abrahamson & Hershey, 1977;Boyer et al, 2016), physiology (Nanda & Kumar, 1983;Tooke et al, 2005), biochemistry (Sreelakshmi et al, 2018), biology (Jacquemart et al, 2015), pollination (Abrahamczyk et al, 2017), morphology (Akiyama & Ohba, 2000;Janssens et al, 2018), systematics Chen, Akiyama & Ohba, 2007;Gogoi et al, 2018), phylogeny and evolution (Janssens et al, 2007;Ruchisansakun et al, 2015), and other (see Adamowski, 2016Adamowski, -2020. Despite the plethora of publications on various attributes of Impatiens, this genus requires further attention and research.…”

Section: Introductionmentioning

confidence: 99%

Seed morphology and sculpture of invasive Impatiens capensis Meerb. from different habitats

Rewicz

Myśliwy

Adamowski

et al. 2020

PeerJ

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Impatiens capensis is an annual plant native to eastern North America that is currently spreading across Europe. In Poland, due to this plant’s rapid spread in the secondary range and high competitiveness in relation to native species, it is considered a locally invasive species. The microstructure of seeds is an important tool for solving various taxonomic problems and also provides data useful for determining the impact of various environmental factors on the phenotypic variability of species. This issue is particularly important in regard to invasive species which occupy a wide range of habitats in the invaded range. There are few reports on seed size and thus far no descriptions of the seed ultrastructure of I. capensis in the analyzed literature. We present new data on the seed morphology of I. capensis growing in different habitats and conditions in the secondary range of the species. The studied populations differed significantly in each of the investigated traits (seed length, width, circumference, area, roundness, and mass). Our findings showed that anthropogenic disturbances in habitats and some soil parameters (presence of carbonates, potassium, loose sand, and moisture) were statistically significant with various seed sizes and morphology in the studied populations of I. capensis. Moreover, our studies showed maximum seed length (5.74 mm) and width (3.21 mm) exceeding those values given in the available literature. For the first time, we also provide a detailed SEM study of the ultrastructure of the seed coat of I. capensis. There are two types of epidermal cells on the seeds: (a) between the ribs (elongated with straight anticlinal walls, slightly concave outer periclinal walls, and micropapillate secondary sculpture on the edges with anticyclic walls), and (b) on the ribs (isodiametric cells with straight anticlinal walls and concave outer periclinal walls). Unlike the variability of size and weight of seeds, the coat ornamentation has turned out to be a steady feature within the studied secondary range of I. capensis.

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Floral biology and breeding system of Impatiens balfourii (Balsaminaceae): An exotic species in extension in temperate areas

Cited by 19 publications

References 51 publications

Breeding systems in Balsaminaceae in relation to pollen/ovule ratio, pollination syndromes, life history and climate zone

Breeding systems in Balsaminaceae in relation to pollen/ovule ratio, pollination syndromes, life history and climate zone

Do local enemies attack alien and native Impatiens alike?

Seed morphology and sculpture of invasive Impatiens capensis Meerb. from different habitats

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