Kalanchoe

Akulova-Barlow, Zoya

doi:10.2985/015.081.0601

Cited by 24 publications

(28 citation statements)

References 1 publication

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“…És molt freqüent a l'àrea metropolitana de Barcelona, on sol aparèixer a les zones periurbanes on gaudeix de més oportunitats per establir-se en comparació a la trama purament urbana (encara que també és força freqüent en ple casc urbà, sovint creixent a les teulades; figura 3). Tal i com expliquem amb més detall a la secció següent, el principal factor bioclimàtic que determina l'àrea potencial de distribució de K. ×houghtonii són les baixes temperatures (tal i com passa amb d'altres espècies de Kalanchoe, és sensible a les gelades; Ward, 2006;Akulova-Barlow, 2009). Aquesta notoespècie només s'ha citat en temps recents a Catalunya: la primera observació confirmada és de l'any 2003 a la costa del Garraf (Pyke, 2008), tot i que és molt probable que les primeres observacions de K. daigremontiana a les terres de l'Ebre de finals del segle passat ( Balada et al, 1997Balada et al, -1998) corresponguin a l'híbrid.…”

Section: Resultats I Discussióunclassified

El gènere «Kalanchoe» (Crassulaceae) a Catalunya: situació i distribució potencial del tàxon invasor «K. ×houghtoni»

Mesquida

Gómez‐Bellver

Guillot³

et al. 2017

orsis

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Section: Resultats I Discussióunclassified

El gènere «Kalanchoe» (Crassulaceae) a Catalunya: situació i distribució potencial del tàxon invasor «K. ×houghtoni»

Mesquida

Gómez‐Bellver

Guillot³

et al. 2017

orsis

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“…The distribution range of K. × houghtonii was estimated by an extensive literature search that included: (1) major regional taxonomic works, checklists, lists and catalogues of naturalized and invasive plants; (2) research articles; (3) grey literature (e.g. technical reports); (4) major databases and information systems, including citizen science projects and digitized herbaria; (5) personal communications; and (6) personal blogs and other non-scientific websites (see Supplementary Text 2).…”

Section: Methodsmentioning

confidence: 99%

“…The aims of this study were the following: (1) to explore the geography pattern of the distribution of K. × houghtonii globally, gathering all the occurrences, both published in standard publications and available from other sources; (2) to track its spatial and temporal colonizational history; (3) to predict the potential distribution of the nothospecies through ENM; (4) to test the contribution of the human activities to the ENM; (5) to test the impact of using different levels of occurrence data accuracy on ENM reconstructions; and (6) to predict how the distribution of this hybrid taxon is going to progress according to different scenarios of climate change.…”

mentioning

confidence: 99%

Global distribution patterns and niche modelling of the invasive Kalanchoe × houghtonii (Crassulaceae)

Herrando‐Moraira

Vitales

Nualart

et al. 2020

Sci Rep

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Invasive alien species are currently considered one of the main threats to global biodiversity. One of the most rapidly expanding invasive plants in recent times is Kalanchoe × houghtonii (Crassulaceae), an artificial hybrid created in the 1930s in the United States by experimental crossings between K. daigremontiana and K. tubiflora, two species endemic to Madagascar. Thanks to its large colonizing capacity (mainly derived from the production of asexual plantlets), K. × houghtonii soon escaped from cultivation and quickly spread in many parts of the world. However, its actual range is not well known due to the lack of a formal description until recent times (2006) and its strong morphological resemblance with one of its parentals (K. daigremontiana). The present study was aimed, in the first instance, to delimit the present distribution area of K. × houghtonii at the global scale by gathering and validating all its occurrences and to track its colonization history. Currently, K. × houghtonii can be found on all continents except Antarctica, although it did not reach a global distribution until the 2000s. Its potential distribution, estimated with MaxEnt modelling software, is mainly centered in subtropical regions, from 20° to 40° of both northern and southern latitudes, mostly in areas with a high anthropogenic activity. Unexpectedly, concomitant to a poleward migration, future niche models suggest a considerable reduction of its range by up to one-third compared to the present, which might be related with the Crassulaceaean Acid Metabolism (CAM) of K. × houghtonii. Further research may shed light as to whether a decrease in potential habitats constitutes a general pattern for crassulaceae and CAM plants.

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“…occur as exotic or invasive species. Many members of the genus are able to self-propagate from plantlets produced on the leaf margin, making established populations hard to eradicate (Descoings, 2003; Akulova-Barlow, 2009). The presence of toxic cardiac glycosides make some Kalanchoe spp.…”

Section: Introductionmentioning

confidence: 99%

Antibacterial Activity of Kalanchoe mortagei and K. fedtschenkoi Against ESKAPE Pathogens

et al. 2019

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Plants in the genus Kalanchoe (Family: Crassulaceae) are used in traditional medicine throughout the tropics for treating a variety of conditions. Two species, Kalanchoe mortagei and K. fedtschenkoi, have established ethnobotanical usage but have been neglected in previous research concerning their potential bioactivity. Here, we provide a thorough review of the reported antimicrobial activities of Kalanchoe genus and evaluate the in vitro antibacterial effects of two previously unexplored species against a panel of multidrug-resistant bacteria, the ESKAPE pathogens (Enterococcus faecium, Staphylococcus aureus, Klebsiella pneumoniae, Acinetobacter baumannii, Pseudomonas aeruginosa, and Enterobacter cloacae). Plant specimens were collected and voucher specimens deposited in the Emory University Herbarium. Dried plant material was ground into a powder and extracted as ethanolic macerations or as aqueous decoctions. Extracts were tested against the ESKAPE pathogens for growth inhibitory activity. Cytotoxicity to human cells was assessed via a lactate dehydrogenase assay of treated human keratinocytes (HaCaTs). K. fedtschenkoi extracts demonstrated growth inhibitory effects against two Gram-negative species, A. baumannii (strain CDC-33) and P. aeruginosa (AH-71), as well as S. aureus (UAMS-1). In these cases, growth inhibition greater than 50% (IC50) was generally observed at concentrations of 256 μg mL-1, though one K. fedtschenkoi extract (1465, prepared from stems) exhibited an IC50 against A. baumannii at 128 μg mL-1. All extracts were well tolerated by HaCaTs (LD50 ≥ 256 μg mL-1). Chemical characterization using HPLC and chemical standards established the presence of caffeic acid and quercetin in both plant species, as well as kaempferol in K. fedtschenkoi. These results reveal K. fedtschenkoi to be a plant of medicinal interest, and future research should aim to characterize the bioactivity of this species and its active constituents through bioassay-guide fractionation. Effects on bacterial biofilm formation and quorum-sensing are also research topics of interest for this genus.

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Kalanchoe

Cited by 24 publications

References 1 publication

El gènere «Kalanchoe» (Crassulaceae) a Catalunya: situació i distribució potencial del tàxon invasor «K. ×houghtoni»

El gènere «Kalanchoe» (Crassulaceae) a Catalunya: situació i distribució potencial del tàxon invasor «K. ×houghtoni»

Global distribution patterns and niche modelling of the invasive Kalanchoe × houghtonii (Crassulaceae)

Antibacterial Activity of Kalanchoe mortagei and K. fedtschenkoi Against ESKAPE Pathogens

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