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The Comparatively Proteomic Analysis in Response to Cold Stress in Cassava Plantlets

文献类型： 外文期刊

作者： An, Feifei 1 ; Li, Genghu 1 ; Li, Qing X. 2 ; Li, Kaimian 1 ; Carvalho, Luiz J. C. B. 3 ; Ou, Wenjun 1 ; Chen, Songbi 1 ;

作者机构： 1.Chinese Acad Trop Agr Sci, Minist Agr Germplasm Resources Conservat & Utiliz, Trop Crops Genet Resources Inst, Danzhou 571737, Peoples R China

2.Univ Hawaii Manoa, Dept Mol Biosci & Bioengn, Manoa, HI USA

3.EMBRAPA, Genet Resources & Biotechnol, Sao Paulo, Brazil

关键词： Cassava plantlets;Comparative proteome;Cold stress;Differential proteins

期刊名称：PLANT MOLECULAR BIOLOGY REPORTER （ 影响因子：1.595； 五年影响因子：2.042 ）

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收录情况： SCI

摘要： Cassava (Manihot esculenta Crantz) is a tropical root crop and sensitive to low temperature. However, it is poorly to know how cassava can modify its metabolism and growth to adapt to cold stress. An investigation aimed at a better understanding of cold-tolerant mechanism of cassava plantlets was carried out with the approaches of physiology and proteomics in the present study. The principal component analysis of seven physiological characteristics showed that electrolyte leakage (EL), chlorophyll content, and malondialdehyde (MDA) may be the most important physiological indexes for determining cold-resistant abilities of cassava. The genome-wide proteomic analysis showed that 20 differential proteins had the same patterns in the apical expanded leaves of cassava SC8 and Col1046. They were mainly related to photosynthesis, carbon metabolism and energy metabolism, defense, protein synthesis, amino acid metabolism, signal transduction, structure, detoxifying and antioxidant, chaperones, and DNA-binding proteins, in which 40 % were related with photosynthesis. The remarkable variation in photosynthetic activity and expression level of peroxiredoxin is closely linked with expression levels of proteomic profiles. Moreover, analysis of differentially expressed proteins under cold stress is an important step toward further elucidation of mechanisms of cold stress resistance.

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