Differential pollination modes between distant populations of Unonopsis guatterioides (Annonaceae) in Minas Gerais and Amazonas, Brazil

Oliveira, Paulo Eugênio; Tomé, Carlos Eduardo R.; Torezan‐Silingardi, Helena Maura; Dötterl, Stefan; Silberbauer-Gottsberger, Ilse; Gottsberger, Gerhard

doi:10.1016/j.flora.2016.07.014

Cited by 11 publications

(7 citation statements)

References 27 publications

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“…In this region, P. axillaris and P. exserta could use selfing as a strategy to avoid interspecific gene exchange despite being able to cross in co-occurring sites, probably owing to the short spatial distance among individuals of the two species in these specific towers (CO1 and CO2). Changes in floral biology within species or populations may be part of the polymorphism in a specific trait in a diversified and widely distributed species as P. axillaris, but they may also trigger a speciation process (Oliveira et al, 2017).…”

Section: Discussionmentioning

confidence: 99%

Contact zones and their consequences: hybridization between two ecologically isolated wild Petunia species

Turchetto

Segatto

Silva‐Arias

et al. 2019

Botanical Journal of the Linnean Society

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Plant hybridization is frequently observed in nature and considered an important driver of angiosperm diversity. Species are thought to arise through the accumulation of morphological and genetic differences that promote their evolutionary independence, even in the presence of hybridization. Natural hybrid zones yield an excellent system to study the outcomes of hybridization in terms of species diversity. Two recently diverged species, Petunia axillaris and P. exserta, show floral differentiation attributed to attraction of varying pollinators. Previous studies suggested natural hybridization between these species to explain morphological floral polymorphisms found among individuals of P. exserta. Here, we analyse genetic and morphological diversity in plants from the contact zone between these species and from isolated populations of each species to evaluate natural hybridization and its consequences. We found that the species' integrity is maintained despite interspecific hybridization and introgression that drove the origin of a new lineage in P. exserta in the contact zones.

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Section: Discussionmentioning

confidence: 99%

Contact zones and their consequences: hybridization between two ecologically isolated wild Petunia species

Turchetto

Segatto

Silva‐Arias

et al. 2019

Botanical Journal of the Linnean Society

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“…The temperature in the GC oven was started at 40 • C, was increased by 6 • C per min to 250 • C, and was held constant for 1 min. The MS interface worked at 250 • C. Mass spectra were taken at 70 eV (El mode) from m/z 34 to 350 (Heiduk et al, 2015;Oliveira et al, 2017).…”

Section: Chemical Analysismentioning

confidence: 99%

Olfactory and Visual Floral Signals of Hedera helix and Heracleum sphondylium Involved in Host Finding by Nectar-Foraging Social Wasps

Lukas

Dötterl

Ayasse³

et al. 2020

Front. Ecol. Evol.

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Social vespid wasps regularly forage on flowers with a generalist pollination system. However, little is known about communication between wasps and their host plants. The aim of this study was to investigate the role of olfactory and visual floral signals of Hedera helix and Heracleum sphondylium, both frequently visited by Vespula and Dolichovespula wasps for the collection of nectar. A combination of chemical, electrophysiological and spectral analyses and behavioral experiments was used to identify attractive floral signals. We identified 37 and 41 EAD-active substances (mainly terpenoids and aromatics) in H. helix and H. sphondylium, respectively. The most abundant floral compounds were 4-oxoisophorone in H. helix and linalool in H. sphondylium, followed by (E)-linalool oxide furanoid in both plants. The olfactory signals were attractive for wasps; however, a combination of olfactory and visual signals made both plants more attractive than olfactory signals alone and, in the case of H. helix, also than visual traits alone. Visual traits were not attractive by themselves. Wasps were also attracted by a synthetic solution resembling the floral scent of H. helix.Our study contributes to a better understanding of the foraging behavior of vespid wasps and describes, for the first-time, floral signals that attract vespine wasps to generalist flowers.

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“…Some studies analyzed plant species of economic interest pollinated by bees ( Cavalcante et al, 2018 ; Krug et al, 2018 ; Beyerlein et al, 2019 ) or by complex systems involving multiple insects ( Dattilo et al, 2012 ; Campbell et al, 2018 ). A small additional amount of data is available on interactions between plants and pollinators in the region, including bees ( Moura et al, 2011 ; Novais and Absy, 2013 ; Ferreira and Absy, 2017 ; Oliveira et al, 2017 ; Milet-Pinheiro et al, 2018 ), beetles ( Seymour and Matthews, 2006 ; Gottsberger and Webber, 2018 ), moths ( Cruz-Neto et al, 2011 ), wasps ( Nazareno et al, 2007 ), birds ( Vicentini and Fischer, 1999 ), and bats ( Gribel et al, 1999 ). None of the quoted studies analyzed the potential impact of climate change on those interactions.…”

Section: Discussionmentioning

confidence: 99%

Flora of Ferruginous Outcrops Under Climate Change: A Study in the Cangas of Carajás (Eastern Amazon)

et al. 2021

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Climate change has impacted biodiversity, affecting species and altering their geographical distribution. Besides understanding the impact in the species, it has been advocated that answering if different traits will be differently impacted could allow refined predictions of how climate change will jeopardize biodiversity. Our aim was to evaluate if climate change will potentially impact plant species differently, considering their traits. We evaluated 608 plant species that occur in the naturally open areas of ferruginous outcrops (namely, cangas) in the National Forest of Carajás (Eastern Amazon). Firstly, we estimated the effects of climate change on each species using species distribution modeling, and analyzed this impact in the set containing all species. Secondly, we classified plant species considering the following traits: (i) pollination syndromes (melittophily, phalaenophily, psychophily, cantharophily, entomophily, ornithophily, chiropterophily, anemophily); (ii) habit (tree, shrub, herb, liana, parasite); and (iii) the main habitat of occurrence (open areas and forests). Thirdly, we investigated if the effects of climate change could be significantly more intense considering all the different traits quoted. Our results showed that most plant species will potentially face reduction of suitable habitats under future climate and the scenarios showed that 42% of them may not find suitable areas in the cangas of Carajás. We found no significant difference within each analyzed trait, considering the potential impact of climate change. The most climatically suitable areas (i.e., areas with high probability of species occurrence in the future) are those in the southwest of the study area. These areas can be considered as priority areas for species protection against climate change.

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Differential pollination modes between distant populations of Unonopsis guatterioides (Annonaceae) in Minas Gerais and Amazonas, Brazil

Cited by 11 publications

References 27 publications

Contact zones and their consequences: hybridization between two ecologically isolated wild Petunia species

Contact zones and their consequences: hybridization between two ecologically isolated wild Petunia species

Olfactory and Visual Floral Signals of Hedera helix and Heracleum sphondylium Involved in Host Finding by Nectar-Foraging Social Wasps

Flora of Ferruginous Outcrops Under Climate Change: A Study in the Cangas of Carajás (Eastern Amazon)

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