JOURNAL OF NANJING FORESTRY UNIVERSITY ›› 2017, Vol. 41 ›› Issue (06): 19-25.doi: 10.3969/j.issn.1000-2006.201703021

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Analysis of the differential proteins in the graft healing process of pecan(Carya illinoinensis)

MO Zhenghai, HE Haiyang, CHEN Wenjing, DENG Qiuju, PENG Fangren*   

  1. Co-Innovation Conter for the Sustainable Forestry in Southern China, College of Forestry, Nanjing Forestry University, Nanjing 210037, China
  • Online:2017-12-18 Published:2017-12-18

Abstract: 【Objective】Grafting is an important method for propagating pecan. This paper aimed to reveal the mechanism underlying graft healing on the proteomic level. 【Method】 We investigated the differential proteins in the graft union of pecans at four developmental stages(1, 6, 10 and 25 days after grafting)based on two-dimensional gel electrophoresis and MALDI-TOF/TOF-MS. 【Result】 In total, 48 differential proteins were identified, and these identified proteins were classified into seven functional categories: energy metabolism, stress and defense responses, cell growth, secondary metabolism, protein synthesis, amino acid metabolism and function unknown. 【Conclusion】Fructose-bisphosphate aldolase, phosphoglycerate kinase, pyruvate decarboxylase and adenosine triphosphatase could provide adequate energy for the graft healing of pecan. Ascorbate peroxidase and peroxiredoxins can eliminate the excessive reactive oxygen species caused by grafting. Soluble inorganic pyrophosphatase may play a role in promoting callus proliferation. Metacaspase and alpha tubulin may be associated with tracheary element differentiation.

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