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Evolutionary expansion and functional diversification of oligopeptide transporter gene family in rice

BACKGROUND: Oligopeptide transporters (OPTs) play important roles in the mobilization of organic nitrogenous compounds and usually associate with tissues that show signs of rapid protein hydrolysis, such as germinating seeds and senescing leaves. This study is to investigate rice OPT genes. RESULTS:...

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Autores principales: Liu, Tao, Zeng, Jiqing, Xia, Kuaifei, Fan, Tian, Li, Yuge, Wang, Yaqin, Xu, Xinlan, Zhang, Mingyong
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer New York 2012
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5520842/
https://www.ncbi.nlm.nih.gov/pubmed/27234238
http://dx.doi.org/10.1186/1939-8433-5-12
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author Liu, Tao
Zeng, Jiqing
Xia, Kuaifei
Fan, Tian
Li, Yuge
Wang, Yaqin
Xu, Xinlan
Zhang, Mingyong
author_facet Liu, Tao
Zeng, Jiqing
Xia, Kuaifei
Fan, Tian
Li, Yuge
Wang, Yaqin
Xu, Xinlan
Zhang, Mingyong
author_sort Liu, Tao
collection PubMed
description BACKGROUND: Oligopeptide transporters (OPTs) play important roles in the mobilization of organic nitrogenous compounds and usually associate with tissues that show signs of rapid protein hydrolysis, such as germinating seeds and senescing leaves. This study is to investigate rice OPT genes. RESULTS: A total of sixteen OsOPT genes (Os for Oryza sative L.) were identified in the rice genome, which were then classified into six sections that belong to two subfamilies (the PT and YSL subfamily). The major mechanisms for evolutionary expansion of the sixteen genes during the rice genome evolution include segmental and tandem duplication. Calculation of the duplication event dates indicated that the sixteen genes originated from nine original OsOPT genes, and the duplication events could be classified into three evolutionary stages. The first evolutionary stage occurred approximately 50 million years ago (Mya) and involved the evolution of four new genes. The second evolutionary stage was approximately 20 Mya and was marked by the appearance of two new genes, and the third evolutionary stage was approximately 9 Mya when two new genes evolved. Mining of the expression database and RT-PCR analysis indicated that the expression of most duplicated OsOPT genes showed high tissue specificities. Diverse expression patterns for the sixteen genes were evaluated using both semi-quantitative RT-PCR and the MPSS data. Expression levels of some OsOPT genes were regulated by abiotic and biotic stresses suggesting the potential involvement of these gene products in rice stress adaptation. Five OsOPT gene mutants showed abnormal development and growth, the primary analysis of five OsOPT gene mutants suggested that they may be necessary for rice development. CONCLUSIONS: These results suggested that rice-specific OsOPT genes might be potentially useful in improving rice. ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (doi:10.1186/1939-8433-5-12) contains supplementary material, which is available to authorized users.
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spelling pubmed-55208422017-07-27 Evolutionary expansion and functional diversification of oligopeptide transporter gene family in rice Liu, Tao Zeng, Jiqing Xia, Kuaifei Fan, Tian Li, Yuge Wang, Yaqin Xu, Xinlan Zhang, Mingyong Rice (N Y) Research BACKGROUND: Oligopeptide transporters (OPTs) play important roles in the mobilization of organic nitrogenous compounds and usually associate with tissues that show signs of rapid protein hydrolysis, such as germinating seeds and senescing leaves. This study is to investigate rice OPT genes. RESULTS: A total of sixteen OsOPT genes (Os for Oryza sative L.) were identified in the rice genome, which were then classified into six sections that belong to two subfamilies (the PT and YSL subfamily). The major mechanisms for evolutionary expansion of the sixteen genes during the rice genome evolution include segmental and tandem duplication. Calculation of the duplication event dates indicated that the sixteen genes originated from nine original OsOPT genes, and the duplication events could be classified into three evolutionary stages. The first evolutionary stage occurred approximately 50 million years ago (Mya) and involved the evolution of four new genes. The second evolutionary stage was approximately 20 Mya and was marked by the appearance of two new genes, and the third evolutionary stage was approximately 9 Mya when two new genes evolved. Mining of the expression database and RT-PCR analysis indicated that the expression of most duplicated OsOPT genes showed high tissue specificities. Diverse expression patterns for the sixteen genes were evaluated using both semi-quantitative RT-PCR and the MPSS data. Expression levels of some OsOPT genes were regulated by abiotic and biotic stresses suggesting the potential involvement of these gene products in rice stress adaptation. Five OsOPT gene mutants showed abnormal development and growth, the primary analysis of five OsOPT gene mutants suggested that they may be necessary for rice development. CONCLUSIONS: These results suggested that rice-specific OsOPT genes might be potentially useful in improving rice. ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (doi:10.1186/1939-8433-5-12) contains supplementary material, which is available to authorized users. Springer New York 2012-06-22 /pmc/articles/PMC5520842/ /pubmed/27234238 http://dx.doi.org/10.1186/1939-8433-5-12 Text en © Liu et al.; licensee Springer. 2012 This article is published under license to BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Research
Liu, Tao
Zeng, Jiqing
Xia, Kuaifei
Fan, Tian
Li, Yuge
Wang, Yaqin
Xu, Xinlan
Zhang, Mingyong
Evolutionary expansion and functional diversification of oligopeptide transporter gene family in rice
title Evolutionary expansion and functional diversification of oligopeptide transporter gene family in rice
title_full Evolutionary expansion and functional diversification of oligopeptide transporter gene family in rice
title_fullStr Evolutionary expansion and functional diversification of oligopeptide transporter gene family in rice
title_full_unstemmed Evolutionary expansion and functional diversification of oligopeptide transporter gene family in rice
title_short Evolutionary expansion and functional diversification of oligopeptide transporter gene family in rice
title_sort evolutionary expansion and functional diversification of oligopeptide transporter gene family in rice
topic Research
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5520842/
https://www.ncbi.nlm.nih.gov/pubmed/27234238
http://dx.doi.org/10.1186/1939-8433-5-12
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