We describe developmental changes in maltasic activity and its mRNA through adulthood, and in response to increase in dietary starch. We studied house sparrows (HOSP; Passer domesticus L.), which undergo a natural switch from insects to starch-containing seed diet during development, and zebra finch (ZEBF; Taeniopygia guttata V.), which have a relatively fixed starchy-seed diet during development. In ZEBF, in whom maltasic activity increased with age but not with dietary starch, α –glycosidase (AG) mRNA was not affected by either age or dietary starch level. In HOSP nestlings, in whom maltasic activity increased with age and with added starch, AG mRNA was higher on diet with added starch but did not increase with age. These results are consistent with the idea that the apparent programmed developmental increase in maltasic activity is not mainly under transcriptional control of AG mRNA, whereas induction of maltasic activity by increased dietary starch is.
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01 January 2018
Intestinal α –glycosidase transcriptional responses during development and diet adjustment in altricial birds
Claudia Gatica-Sosa,
Claudia Gatica-Sosa
1
Departamento de Bioquímica y Ciencias Biológicas, Facultad de Química, Bioquímica y Farmacia, Universidad Nacional de San Luis, 5700 San Luis, Argentina
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Pawel Brzęk,
Pawel Brzęk
2
Institute of Biology, University of Białystok, Ciołkowskiego 1J, 15-245 Białystok, Poland
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Melisa Magallanes,
Melisa Magallanes
3
Departamento de Bioquímica y Ciencias Biológicas, Facultad de Química, Bioquímica y Farmacia, Universidad Nacional de San Luis, 5700 San Luis, Argentina
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William H. Karasov,
William H. Karasov
*
4
Department of Forest and Wildlife Ecology, University of Wisconsin, 1630 Linden Drive, Madison, WI 53706, USA
*Author for correspondence: wkarasov@wisc.edu
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Enrique Caviedes-Vidal
Enrique Caviedes-Vidal
1
Departamento de Bioquímica y Ciencias Biológicas, Facultad de Química, Bioquímica y Farmacia, Universidad Nacional de San Luis, 5700 San Luis, Argentina
5
Instituto Multidisciplinario de Investigaciones Biológicas de San Luis, Consejo Nacional de Investigaciones Científicas y Técnicas, 5700 San Luis, Argentina
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Claudia Gatica-Sosa
1
Departamento de Bioquímica y Ciencias Biológicas, Facultad de Química, Bioquímica y Farmacia, Universidad Nacional de San Luis, 5700 San Luis, Argentina
Pawel Brzęk
2
Institute of Biology, University of Białystok, Ciołkowskiego 1J, 15-245 Białystok, Poland
Melisa Magallanes
3
Departamento de Bioquímica y Ciencias Biológicas, Facultad de Química, Bioquímica y Farmacia, Universidad Nacional de San Luis, 5700 San Luis, Argentina
William H. Karasov
*
4
Department of Forest and Wildlife Ecology, University of Wisconsin, 1630 Linden Drive, Madison, WI 53706, USA
Enrique Caviedes-Vidal
1
Departamento de Bioquímica y Ciencias Biológicas, Facultad de Química, Bioquímica y Farmacia, Universidad Nacional de San Luis, 5700 San Luis, Argentina
5
Instituto Multidisciplinario de Investigaciones Biológicas de San Luis, Consejo Nacional de Investigaciones Científicas y Técnicas, 5700 San Luis, Argentina
*Author for correspondence: wkarasov@wisc.edu
Received:
11 Oct 2017
Accepted:
01 Feb 2018
Online ISSN: 1477-9145
Print ISSN: 0022-0949
Consejo Nacional de Investigaciones Científicas y Técnicas
(PIP11220130100379CO)
J Exp Biol jeb.171827.
Article history
Received:
11 Oct 2017
Accepted:
01 Feb 2018
Currently Viewing Accepted Manuscript - Newer Version Available
19 Mar 2018
Citation
Claudia Gatica-Sosa, Pawel Brzęk, Melisa Magallanes, William H. Karasov, Enrique Caviedes-Vidal; Intestinal α –glycosidase transcriptional responses during development and diet adjustment in altricial birds. J Exp Biol 2018; jeb.171827. doi: https://doi.org/10.1242/jeb.171827
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