Seasonal changes in a dehydrin-like protein and proteases of Pistacia vera inflorescence buds Academic Article uri icon

abstract

  • Proteins associated with dormancy were isolated from reproductive buds of pistachio (Pistacia vera L.). A 32 kDa protein (IBP32) and a 27 kDa protein (IBP27), which are the major proteins in the bud and bark, were purified. They were characterized as glycoproteins rich in glycine and alanine and were highly hydrophilic. Immunological cross-reactivity between dehydrin antibodies and the IBPs, sequence homology and amino acid composition indicated that these proteins are dehydrin-like. The results suggest that IBP32 may play a role in stress tolerance, particularly in the cold hardiness of pistachio during dormancy, in addition to its function as a nitrogen reserve. In autumn, prior to dormancy, there is accumulation of proteins in inflorescence buds and bark of Pistacia vera L. Their concentration is high throughout winter and they disappear rapidly in early spring. A …

publication date

  • August 24, 1997