Dissecting the proteome of pea mature seeds reveals the phenotypic plasticity of seed protein composition

被引:69
作者
Bourgeois, Michael [1 ]
Jacquin, Francoise [1 ]
Savois, Vincent [1 ]
Sommerer, Nicolas [2 ]
Labas, Valerie [3 ]
Henry, Celine [4 ]
Burstin, Judith [1 ]
机构
[1] INRA, UMR LEG, F-21110 Bretenieres, France
[2] INRA, Unite Rech Prote, F-34060 Montpellier, France
[3] Univ Tours, CNRS, INRA, Unite Mixte Rech Physiol Reprod & Comportements, Nouzilly, France
[4] INRA, Unite Biochim Bacterienne, Domaine De Vilvert, France
关键词
2-DE reference map; Pea seed protein composition; Phenotypic plasticity; Premobilization; Storage proteins; HEAT-RESPONSIVE PROTEINS; HEXAPLOID WHEAT-GRAIN; PISUM-SATIVUM-L; PROTEOLYTIC CLEAVAGE; 2-DIMENSIONAL GELS; FEEDING VALUE; VICILIN; GERMINATION; GENES; IDENTIFICATION;
D O I
10.1002/pmic.200700903
中图分类号
Q5 [生物化学];
学科分类号
071010 ; 081704 ;
摘要
Pea (Pisum sativum L.) is the most cultivated European pulse crop and the pea seeds mainly serve as a protein source for monogastric animals. Because the seed protein composition impacts on seed nutritional value, we aimed at identifying the determinants of its variability. This paper presents the first pea mature seed proteome reference map, which includes 156 identified proteins (http://www.inra.fr/legumbase/peaseedmap/). This map provides a fine dissection of the pea seed storage protein composition revealing a large diversity of storage proteins resulting both from gene diversity and post-translational processing. It gives new insights into the pea storage protein processing (especially 7S globulins) as a possible adaptation towards progressive mobilization of the proteins during germination. The nonstorage seed proteome revealed the presence of proteins involved in seed defense together with proteins preparing germination. The plasticity of the seed proteome was revealed for seeds produced in three successive years of cultivation, and 30% of the spots were affected by environmental variations. This work pinpoints seed proteins most affected by environment, highlighting new targets to stabilize storage protein composition that should be further analyzed.
引用
收藏
页码:254 / 271
页数:18
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