The unique evolutionary pattern of the Hydroxyproline-rich glycoproteins superfamily in Chinese white pear (Pyrus bretschneideri).
The unique evolutionary pattern of the Hydroxyproline-rich glycoproteins superfamily in Chinese white pear (Pyrus bretschneideri).
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中国白梨（Pyrus bretschneideri）富含羟脯氨酸糖蛋白超家族的独特进化模式
DOI：
10.1186/s12870-018-1252-2
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发表时间：
2018-02-17
影响因子：
5.3
通讯作者：
Tao S
中科院分区：
文献类型：
--
作者：
Jiao H;Liu X;Sun S;Wang P;Qiao X;Li J;Tang C;Wu J;Zhang S;Tao S
BackgroundThe hydroxyproline-rich glycoprotein (HRGP) superfamily, comprising three families (arabinogalactan-proteins, AGPs; extensins, EXTs; proline-rich proteins, PRPs), is a class of proline-rich proteins that exhibit high diversity and are involved in many aspects of plant biology.ResultsIn this study, 838HRGPswere identified from Chinese white pear (Pyrus bretschneideri) by searching for biased amino acid composition and conserved motifs. 405HRGPswere derived from whole genome duplication (WGD) events which is suggested to be the major force of drivingHRGPsexpansion and the recent WGD event shared by apple and pear generated most duplicatedHRGPsin pear. This duplication event drived the structural variation of theHRGPsencoding hydroxyproline (Hyp)-rich motifs. The rate of HRGPs evolution mainly impacted the Hyp-rich motifs even in chimeric HRGPs. During the evolution of 53PRPsthat are also typified by 7-deoxyloganetin glucosyltransferase-like genes, the duplication fromPRPtonon-PRPwas indirectly modified by positive selection. These results suggested that the rate ofHRGPevolution mainly influenced the Hyp-rich motifs even in chimericHRGPs. The expression divergence ofHRGPswas higher than that of other commonly duplicated genes. In pear pistil, 601HRGPsexhibited expression, while in pear pollen, 285HRGPswere expressed. The qPCR results revealed thatPbr036330.1andPbr010506.1showed different expression profile in self-incompatibility of pear pistil.ConclusionsThe researches indicated that WGD events was the main duplication type during the evolution of HRGPs, and the highly variable Hyp-motifs might be accountable for the expansion, evolution and expression divergence ofHRGPsand that this divergence may be responsible for the gain of new functions in plants.
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影响因子：
5.1
作者：
Ito, M;Kodama, H;Watanabe, A
通讯作者：
Watanabe, A
影响因子：
7.2
作者：
Hancock, CN;Kent, L;McClure, BA
通讯作者：
McClure, BA
DOI：
10.1073/pnas.0900906106
发表时间：
2009-04-07
影响因子：
11.1
作者：
Fawcett, Jeffrey A.;Maere, Steven;Van de Peer, Yves
通讯作者：
Van de Peer, Yves
影响因子：
7.2
作者：
Cruz-Garcia, F;Hancock, CN;McClure, B
通讯作者：
McClure, B
影响因子：
--
作者：
de Graaf, BHJ;Knuiman, BA;Mariani, C
通讯作者：
Mariani, C