2024-03-28T13:01:37Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/1515992019-03-18T12:50:29Zcom_10261_41com_10261_1com_10261_9676com_10261_8col_10261_294col_10261_9677
DIGITAL.CSIC
author
Miguel, Cristina de
author
Linsler, Friedemann
author
Casanova, Jordi
author
Franch-Marro, Xavier
funder
Ministerio de Ciencia e Innovación (España)
funder
European Commission
funder
Fundación "la Caixa"
funder
Generalitat de Catalunya
2017-06-19T07:07:28Z
2017-06-19T07:07:28Z
2016
Development 143: 3615-3622 (2016)
0950-1991
http://hdl.handle.net/10261/151599
10.1242/dev.134924
1477-9129
http://dx.doi.org/10.13039/501100004837http://dx.doi.org/10.13039/501100000780http://dx.doi.org/10.13039/501100002809
It is not clear how simple genetic changes can account for the coordinated variations that give rise to modified functional organs. Here, we addressed this issue by analysing the expression and function of regulatory genes in the developing tracheal systems of two insect species. The larval tracheal system of Drosophila can be distinguished from the less derived tracheal system of the beetle Tribolium by two main features. First, Tribolium has lateral spiracles connecting the trachea to the exterior in each segment, while Drosophila has only one pair of posterior spiracles. Second, Drosophila, but not Tribolium, has two prominent longitudinal branches that distribute air from the posterior spiracles. Both innovations, while considered different structures, are functionally dependent on each other and linked to habitat occupancy. We show that changes in the domains of spalt and cut expression in the embryo are associated with the acquisition of each structure. Moreover, we show that these two genetic modifications are connected both functionally and genetically, thus providing an evolutionary scenario by which a genetic event contributes to the joint evolution of functionally inter-related structures.
eng
openAccess
Trachea
Spiracles
Spalt
Cut
Morphogenesis
Evolution
Drosophila
Tribolium
Genetic basis for the evolution of organ morphogenesis: the case of spalt and cut in the development of insect trachea
artículo
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URL
https://digital.csic.es/bitstream/10261/151599/1/insect_trachea_Miguel.pdf
File
MD5
6ba68b2283a34b03b3247ae2ed666e3f
11517618
application/pdf
insect_trachea_Miguel.pdf