Sexual differentiation of the zebra finch song system: potential roles for sex chromosome genes

Background Recent evidence suggests that some sex differences in brain and behavior might result from direct genetic effects, and not solely the result of the organizational effects of steroid hormones. The present study examined the potential role for sex-biased gene expression during development o...
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Autor*in:	Tomaszycki, Michelle L [verfasserIn] Peabody, Camilla Replogle, Kirstin Clayton, David F Tempelman, Robert J Wade, Juli

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2009

Schlagwörter:	Zebra Finch Dosage Compensation Song Learning Dimorphic Expression Singing Behavior

Anmerkung:	© Tomaszycki et al; licensee BioMed Central Ltd. 2009

Übergeordnetes Werk:	Enthalten in: BMC neuroscience - London : BioMed Central, 2000, 10(2009), 1 vom: 23. März
Übergeordnetes Werk:	volume:10 ; year:2009 ; number:1 ; day:23 ; month:03

Links:	Volltext

DOI / URN:	10.1186/1471-2202-10-24

Katalog-ID:	SPR027232239

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allfields	10.1186/1471-2202-10-24 doi (DE-627)SPR027232239 (SPR)1471-2202-10-24-e DE-627 ger DE-627 rakwb eng Tomaszycki, Michelle L verfasserin aut Sexual differentiation of the zebra finch song system: potential roles for sex chromosome genes 2009 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © Tomaszycki et al; licensee BioMed Central Ltd. 2009 Background Recent evidence suggests that some sex differences in brain and behavior might result from direct genetic effects, and not solely the result of the organizational effects of steroid hormones. The present study examined the potential role for sex-biased gene expression during development of sexually dimorphic singing behavior and associated song nuclei in juvenile zebra finches. Results A microarray screen revealed more than 2400 putative genes (with a false discovery rate less than 0.05) exhibiting sex differences in the telencephalon of developing zebra finches. Increased expression in males was confirmed in 12 of 20 by qPCR using cDNA from the whole telencephalon; all of these appeared to be located on the Z sex chromosome. Six of the genes also showed increased expression in one or more of the song control nuclei of males at post-hatching day 25. Although the function of half of the genes is presently unknown, we have identified three as: 17-beta-hydroxysteroid dehydrogenase type IV, methylcrotonyl-CoA carboxylase, and sorting nexin 2. Conclusion The data suggest potential influences of these genes in song learning and/or masculinization of song system morphology, both of which are occurring at this developmental stage. Zebra Finch (dpeaa)DE-He213 Dosage Compensation (dpeaa)DE-He213 Song Learning (dpeaa)DE-He213 Dimorphic Expression (dpeaa)DE-He213 Singing Behavior (dpeaa)DE-He213 Peabody, Camilla aut Replogle, Kirstin aut Clayton, David F aut Tempelman, Robert J aut Wade, Juli aut Enthalten in BMC neuroscience London : BioMed Central, 2000 10(2009), 1 vom: 23. März (DE-627)326643648 (DE-600)2041344-0 1471-2202 nnns volume:10 year:2009 number:1 day:23 month:03 https://dx.doi.org/10.1186/1471-2202-10-24 kostenfrei Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2031 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2061 GBV_ILN_2111 GBV_ILN_2113 GBV_ILN_2190 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 10 2009 1 23 03
spelling	10.1186/1471-2202-10-24 doi (DE-627)SPR027232239 (SPR)1471-2202-10-24-e DE-627 ger DE-627 rakwb eng Tomaszycki, Michelle L verfasserin aut Sexual differentiation of the zebra finch song system: potential roles for sex chromosome genes 2009 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © Tomaszycki et al; licensee BioMed Central Ltd. 2009 Background Recent evidence suggests that some sex differences in brain and behavior might result from direct genetic effects, and not solely the result of the organizational effects of steroid hormones. The present study examined the potential role for sex-biased gene expression during development of sexually dimorphic singing behavior and associated song nuclei in juvenile zebra finches. Results A microarray screen revealed more than 2400 putative genes (with a false discovery rate less than 0.05) exhibiting sex differences in the telencephalon of developing zebra finches. Increased expression in males was confirmed in 12 of 20 by qPCR using cDNA from the whole telencephalon; all of these appeared to be located on the Z sex chromosome. Six of the genes also showed increased expression in one or more of the song control nuclei of males at post-hatching day 25. Although the function of half of the genes is presently unknown, we have identified three as: 17-beta-hydroxysteroid dehydrogenase type IV, methylcrotonyl-CoA carboxylase, and sorting nexin 2. Conclusion The data suggest potential influences of these genes in song learning and/or masculinization of song system morphology, both of which are occurring at this developmental stage. Zebra Finch (dpeaa)DE-He213 Dosage Compensation (dpeaa)DE-He213 Song Learning (dpeaa)DE-He213 Dimorphic Expression (dpeaa)DE-He213 Singing Behavior (dpeaa)DE-He213 Peabody, Camilla aut Replogle, Kirstin aut Clayton, David F aut Tempelman, Robert J aut Wade, Juli aut Enthalten in BMC neuroscience London : BioMed Central, 2000 10(2009), 1 vom: 23. März (DE-627)326643648 (DE-600)2041344-0 1471-2202 nnns volume:10 year:2009 number:1 day:23 month:03 https://dx.doi.org/10.1186/1471-2202-10-24 kostenfrei Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2031 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2061 GBV_ILN_2111 GBV_ILN_2113 GBV_ILN_2190 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 10 2009 1 23 03
allfields_unstemmed	10.1186/1471-2202-10-24 doi (DE-627)SPR027232239 (SPR)1471-2202-10-24-e DE-627 ger DE-627 rakwb eng Tomaszycki, Michelle L verfasserin aut Sexual differentiation of the zebra finch song system: potential roles for sex chromosome genes 2009 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © Tomaszycki et al; licensee BioMed Central Ltd. 2009 Background Recent evidence suggests that some sex differences in brain and behavior might result from direct genetic effects, and not solely the result of the organizational effects of steroid hormones. The present study examined the potential role for sex-biased gene expression during development of sexually dimorphic singing behavior and associated song nuclei in juvenile zebra finches. Results A microarray screen revealed more than 2400 putative genes (with a false discovery rate less than 0.05) exhibiting sex differences in the telencephalon of developing zebra finches. Increased expression in males was confirmed in 12 of 20 by qPCR using cDNA from the whole telencephalon; all of these appeared to be located on the Z sex chromosome. Six of the genes also showed increased expression in one or more of the song control nuclei of males at post-hatching day 25. Although the function of half of the genes is presently unknown, we have identified three as: 17-beta-hydroxysteroid dehydrogenase type IV, methylcrotonyl-CoA carboxylase, and sorting nexin 2. Conclusion The data suggest potential influences of these genes in song learning and/or masculinization of song system morphology, both of which are occurring at this developmental stage. Zebra Finch (dpeaa)DE-He213 Dosage Compensation (dpeaa)DE-He213 Song Learning (dpeaa)DE-He213 Dimorphic Expression (dpeaa)DE-He213 Singing Behavior (dpeaa)DE-He213 Peabody, Camilla aut Replogle, Kirstin aut Clayton, David F aut Tempelman, Robert J aut Wade, Juli aut Enthalten in BMC neuroscience London : BioMed Central, 2000 10(2009), 1 vom: 23. März (DE-627)326643648 (DE-600)2041344-0 1471-2202 nnns volume:10 year:2009 number:1 day:23 month:03 https://dx.doi.org/10.1186/1471-2202-10-24 kostenfrei Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2031 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2061 GBV_ILN_2111 GBV_ILN_2113 GBV_ILN_2190 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 10 2009 1 23 03
allfieldsGer	10.1186/1471-2202-10-24 doi (DE-627)SPR027232239 (SPR)1471-2202-10-24-e DE-627 ger DE-627 rakwb eng Tomaszycki, Michelle L verfasserin aut Sexual differentiation of the zebra finch song system: potential roles for sex chromosome genes 2009 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © Tomaszycki et al; licensee BioMed Central Ltd. 2009 Background Recent evidence suggests that some sex differences in brain and behavior might result from direct genetic effects, and not solely the result of the organizational effects of steroid hormones. The present study examined the potential role for sex-biased gene expression during development of sexually dimorphic singing behavior and associated song nuclei in juvenile zebra finches. Results A microarray screen revealed more than 2400 putative genes (with a false discovery rate less than 0.05) exhibiting sex differences in the telencephalon of developing zebra finches. Increased expression in males was confirmed in 12 of 20 by qPCR using cDNA from the whole telencephalon; all of these appeared to be located on the Z sex chromosome. Six of the genes also showed increased expression in one or more of the song control nuclei of males at post-hatching day 25. Although the function of half of the genes is presently unknown, we have identified three as: 17-beta-hydroxysteroid dehydrogenase type IV, methylcrotonyl-CoA carboxylase, and sorting nexin 2. Conclusion The data suggest potential influences of these genes in song learning and/or masculinization of song system morphology, both of which are occurring at this developmental stage. Zebra Finch (dpeaa)DE-He213 Dosage Compensation (dpeaa)DE-He213 Song Learning (dpeaa)DE-He213 Dimorphic Expression (dpeaa)DE-He213 Singing Behavior (dpeaa)DE-He213 Peabody, Camilla aut Replogle, Kirstin aut Clayton, David F aut Tempelman, Robert J aut Wade, Juli aut Enthalten in BMC neuroscience London : BioMed Central, 2000 10(2009), 1 vom: 23. März (DE-627)326643648 (DE-600)2041344-0 1471-2202 nnns volume:10 year:2009 number:1 day:23 month:03 https://dx.doi.org/10.1186/1471-2202-10-24 kostenfrei Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2031 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2061 GBV_ILN_2111 GBV_ILN_2113 GBV_ILN_2190 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 10 2009 1 23 03
allfieldsSound	10.1186/1471-2202-10-24 doi (DE-627)SPR027232239 (SPR)1471-2202-10-24-e DE-627 ger DE-627 rakwb eng Tomaszycki, Michelle L verfasserin aut Sexual differentiation of the zebra finch song system: potential roles for sex chromosome genes 2009 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © Tomaszycki et al; licensee BioMed Central Ltd. 2009 Background Recent evidence suggests that some sex differences in brain and behavior might result from direct genetic effects, and not solely the result of the organizational effects of steroid hormones. The present study examined the potential role for sex-biased gene expression during development of sexually dimorphic singing behavior and associated song nuclei in juvenile zebra finches. Results A microarray screen revealed more than 2400 putative genes (with a false discovery rate less than 0.05) exhibiting sex differences in the telencephalon of developing zebra finches. Increased expression in males was confirmed in 12 of 20 by qPCR using cDNA from the whole telencephalon; all of these appeared to be located on the Z sex chromosome. Six of the genes also showed increased expression in one or more of the song control nuclei of males at post-hatching day 25. Although the function of half of the genes is presently unknown, we have identified three as: 17-beta-hydroxysteroid dehydrogenase type IV, methylcrotonyl-CoA carboxylase, and sorting nexin 2. Conclusion The data suggest potential influences of these genes in song learning and/or masculinization of song system morphology, both of which are occurring at this developmental stage. Zebra Finch (dpeaa)DE-He213 Dosage Compensation (dpeaa)DE-He213 Song Learning (dpeaa)DE-He213 Dimorphic Expression (dpeaa)DE-He213 Singing Behavior (dpeaa)DE-He213 Peabody, Camilla aut Replogle, Kirstin aut Clayton, David F aut Tempelman, Robert J aut Wade, Juli aut Enthalten in BMC neuroscience London : BioMed Central, 2000 10(2009), 1 vom: 23. März (DE-627)326643648 (DE-600)2041344-0 1471-2202 nnns volume:10 year:2009 number:1 day:23 month:03 https://dx.doi.org/10.1186/1471-2202-10-24 kostenfrei Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2031 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2061 GBV_ILN_2111 GBV_ILN_2113 GBV_ILN_2190 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 10 2009 1 23 03
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author	Tomaszycki, Michelle L
spellingShingle	Tomaszycki, Michelle L misc Zebra Finch misc Dosage Compensation misc Song Learning misc Dimorphic Expression misc Singing Behavior Sexual differentiation of the zebra finch song system: potential roles for sex chromosome genes
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topic_title	Sexual differentiation of the zebra finch song system: potential roles for sex chromosome genes Zebra Finch (dpeaa)DE-He213 Dosage Compensation (dpeaa)DE-He213 Song Learning (dpeaa)DE-He213 Dimorphic Expression (dpeaa)DE-He213 Singing Behavior (dpeaa)DE-He213
topic	misc Zebra Finch misc Dosage Compensation misc Song Learning misc Dimorphic Expression misc Singing Behavior
topic_unstemmed	misc Zebra Finch misc Dosage Compensation misc Song Learning misc Dimorphic Expression misc Singing Behavior
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title	Sexual differentiation of the zebra finch song system: potential roles for sex chromosome genes
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title_full	Sexual differentiation of the zebra finch song system: potential roles for sex chromosome genes
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author_browse	Tomaszycki, Michelle L Peabody, Camilla Replogle, Kirstin Clayton, David F Tempelman, Robert J Wade, Juli
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author-letter	Tomaszycki, Michelle L
doi_str_mv	10.1186/1471-2202-10-24
title_sort	sexual differentiation of the zebra finch song system: potential roles for sex chromosome genes
title_auth	Sexual differentiation of the zebra finch song system: potential roles for sex chromosome genes
abstract	Background Recent evidence suggests that some sex differences in brain and behavior might result from direct genetic effects, and not solely the result of the organizational effects of steroid hormones. The present study examined the potential role for sex-biased gene expression during development of sexually dimorphic singing behavior and associated song nuclei in juvenile zebra finches. Results A microarray screen revealed more than 2400 putative genes (with a false discovery rate less than 0.05) exhibiting sex differences in the telencephalon of developing zebra finches. Increased expression in males was confirmed in 12 of 20 by qPCR using cDNA from the whole telencephalon; all of these appeared to be located on the Z sex chromosome. Six of the genes also showed increased expression in one or more of the song control nuclei of males at post-hatching day 25. Although the function of half of the genes is presently unknown, we have identified three as: 17-beta-hydroxysteroid dehydrogenase type IV, methylcrotonyl-CoA carboxylase, and sorting nexin 2. Conclusion The data suggest potential influences of these genes in song learning and/or masculinization of song system morphology, both of which are occurring at this developmental stage. © Tomaszycki et al; licensee BioMed Central Ltd. 2009
abstractGer	Background Recent evidence suggests that some sex differences in brain and behavior might result from direct genetic effects, and not solely the result of the organizational effects of steroid hormones. The present study examined the potential role for sex-biased gene expression during development of sexually dimorphic singing behavior and associated song nuclei in juvenile zebra finches. Results A microarray screen revealed more than 2400 putative genes (with a false discovery rate less than 0.05) exhibiting sex differences in the telencephalon of developing zebra finches. Increased expression in males was confirmed in 12 of 20 by qPCR using cDNA from the whole telencephalon; all of these appeared to be located on the Z sex chromosome. Six of the genes also showed increased expression in one or more of the song control nuclei of males at post-hatching day 25. Although the function of half of the genes is presently unknown, we have identified three as: 17-beta-hydroxysteroid dehydrogenase type IV, methylcrotonyl-CoA carboxylase, and sorting nexin 2. Conclusion The data suggest potential influences of these genes in song learning and/or masculinization of song system morphology, both of which are occurring at this developmental stage. © Tomaszycki et al; licensee BioMed Central Ltd. 2009
abstract_unstemmed	Background Recent evidence suggests that some sex differences in brain and behavior might result from direct genetic effects, and not solely the result of the organizational effects of steroid hormones. The present study examined the potential role for sex-biased gene expression during development of sexually dimorphic singing behavior and associated song nuclei in juvenile zebra finches. Results A microarray screen revealed more than 2400 putative genes (with a false discovery rate less than 0.05) exhibiting sex differences in the telencephalon of developing zebra finches. Increased expression in males was confirmed in 12 of 20 by qPCR using cDNA from the whole telencephalon; all of these appeared to be located on the Z sex chromosome. Six of the genes also showed increased expression in one or more of the song control nuclei of males at post-hatching day 25. Although the function of half of the genes is presently unknown, we have identified three as: 17-beta-hydroxysteroid dehydrogenase type IV, methylcrotonyl-CoA carboxylase, and sorting nexin 2. Conclusion The data suggest potential influences of these genes in song learning and/or masculinization of song system morphology, both of which are occurring at this developmental stage. © Tomaszycki et al; licensee BioMed Central Ltd. 2009
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title_short	Sexual differentiation of the zebra finch song system: potential roles for sex chromosome genes
url	https://dx.doi.org/10.1186/1471-2202-10-24
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author2	Peabody, Camilla Replogle, Kirstin Clayton, David F Tempelman, Robert J Wade, Juli
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up_date	2024-07-04T00:59:42.311Z
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The present study examined the potential role for sex-biased gene expression during development of sexually dimorphic singing behavior and associated song nuclei in juvenile zebra finches. Results A microarray screen revealed more than 2400 putative genes (with a false discovery rate less than 0.05) exhibiting sex differences in the telencephalon of developing zebra finches. Increased expression in males was confirmed in 12 of 20 by qPCR using cDNA from the whole telencephalon; all of these appeared to be located on the Z sex chromosome. Six of the genes also showed increased expression in one or more of the song control nuclei of males at post-hatching day 25. Although the function of half of the genes is presently unknown, we have identified three as: 17-beta-hydroxysteroid dehydrogenase type IV, methylcrotonyl-CoA carboxylase, and sorting nexin 2. 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Sexual differentiation of the zebra finch song system: potential roles for sex chromosome genes

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