@article{fdi:010085925, title = {{P}anmixia and active colonisation of the invasive palm {T}rachycarpus fortunei ({A}recaceae) in {S}outhern {S}witzerland and {N}orthern {I}taly as inferred by microsatellites and {SNP} markers}, author = {{J}ousson, {A}. and {C}hriste, {C}. and {S}tauffer, {F}. and {M}arazzi, {B}. and {A}berlenc, {F}r{\'e}d{\'e}rique and {M}aspoli, {G}. and {N}aciri, {Y}.}, editor = {}, language = {{ENG}}, abstract = {{T}rachycarpus fortunei ({A}recaceae: {C}oryphoideae) is an {A}sian palm that was introduced during the nineteenth century in southern {S}witzerland and northern {I}taly as an ornamental plant. {I}n the recent decades, the palm has become an aggressive invasive species in the region. {B}efore this study, the genetic structure and diversity of the naturalised populations were unknown. {W}e aimed at understanding the dynamics of invasion and at comparing the results obtained with two types of markers. {T}his genetic approach aimed at tracing back as far as possible the source of invasive populations comparing historical information found in literature and invasive genetic patterns. {T}he genetic diversity was analysed using eight microsatellites (five were developed for that purpose) and 31 ' 000 {SNP}s identified through {GBS} analyses. {G}enetic analyses were carried out for 200 naturalised individuals sampled from 21 populations in the {C}anton {T}icino ({S}witzerland) and the provinces of {L}ombardy and {P}iedmont ({I}taly). {T}he observed general panmixia indicates that the expansion of {T}. fortunei is active in its naturalised areas. {T}he genetic pattern found for both {SNP}s and microsatellites appears to be related to the colonisation process, with a lack of geographic structure and bottleneck signatures occurring at the colonisation front, distantly from historical sites. {T}his study gives a better understanding of the expansion of {T}. fortunei and adds new insights to its ecology.}, keywords = {{D}ispersal ; {I}nsubric region ; {I}nvasion ; {G}enetic diversity ; {N}eophyte ; {P}alms ; {S}outhern {A}lps ; {SUISSE} ; {ITALIE} ; {ALPES}}, booktitle = {}, journal = {{B}iological {I}nvasions}, volume = {[{E}arly access]}, numero = {}, pages = {[20 p.]}, ISSN = {1387-3547}, year = {2022}, DOI = {10.1007/s10530-022-02874-8}, URL = {https://www.documentation.ird.fr/hor/fdi:010085925}, }