Richness and taxonomic representation of the genus Platanus in Santiago (Chile) based on PCR procedure on the LEAFY gene (LFY-i2)
Keywords:hybrids, urban flora, urban ornamentation, urban trees
Species of the genus Platanus are widely distributed around the globe, due to their ornamental use. Although there are 10 valid species, an undetermined number of hybrids have been generated from them. Therefore, in different cities where these taxa have been planted -including Chilean cities- the diversity and taxonomic representation of Platanus is confusing and controversial. Through a PCR -based procedure on the LEAFY gene (LFYi2), an informative gene to identify Platanus species, we analyzed the diversity of the genus in Santiago, measuring also its representation. We sampled 269 Platanus trees distributed in streets and avenues of Santiago, showing that there are at least seven taxa, including the species P. occidentalis and P. orientalis, and five hybrid taxa; one of them is P. × hispanica, while the other four have no discernible origin from Leafy-i2 (here called Platanus A, Platanus B, Platanus C and Platanus D). In terms of representation, the set of hybrid taxa accumulated 84.7% of the trees sampled; while P. orientalis and P. occidentalis together accumulated 15.3% of the trees. Of the species, P. orientalis was the most frequent (14.9%), while among the hybrids, the most frequent was Platanus A (40.8%); in contrast, P. × hispanica represented a low proportion of the sample (1.9%). These results confirm the presence of P. occidentalis, P. orientalis and P. × hispanica in Santiago; however, the cumulative representation of these three taxa (17.2%) is lower than that of undetermined hybrids (82.8%). The taxonomic recognition and representation of Platanus specimens in Santiago is an important tool for projecting future urban tree planting efforts, especially in view of the ecosystem services provided by them.
How to Cite
Copyright (c) 2022 Sergio A. Castro, Felipe Sobarzo, Martín R. Carmona, Camilo Castro-Comte, Juan Pablo Castro-Comte, Javier A. Figueroa
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
Authors who publish with this journal agree to the following terms:
- Authors retain copyright and grant the journal right of first publication.
- The articles in this journal are published under Creative Commons Attribution-NonCommercial 4.0 International License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
- Authors are permitted and encouraged to post their work online (e.g., in institutional repositories, on their website or ResearchGate) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (SeeThe Effect of Open Access).