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Changes of inositol phosphates during decapitation‐induced lateral bud break of Malus domestica
Author(s) -
Wang Shiow Y.,
Faust Miklos
Publication year - 1995
Publication title -
physiologia plantarum
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.351
H-Index - 146
eISSN - 1399-3054
pISSN - 0031-9317
DOI - 10.1111/j.1399-3054.1995.tb06845.x
Subject(s) - inositol , phosphatidylinositol , malus , phospholipid , biology , dormancy , phosphate , shoot , inositol phosphate , chemistry , biochemistry , botany , germination , receptor , kinase , membrane
An increase in phosphatidylcholine (PC), phosphatidyl‐ethanolamine (PE), phosphatidylglycerol (PG), and phosphatidylinositol (PI) occurred during bud break induced by decapitation. Inositol‐1‐phosphate [Ins(l)P 1 ], inositol‐1,4‐bisphosphate [Ins(1,4)P 2 ], and inositol‐1,4,5‐triphosphate [Ins(1,4,5)P 3 ] were found in apple buds and increased progressively following decapitation. Ins(1)P 1 and Ins(1,4)P 2 peaked 48 h after decapitation and Ins(1,4,5)P 3 peaked 72 h after decapitation during the metabolic transition when buds emerged from dormancy. Ins(1,4)P 2 and Ins(1,4,5)P 3 levels declined there after. The lateral buds on shoots with intact terminals and decapitated shoots treated with indole‐3‐acetic acid (IAA) in the terminals tip remained dormant and there were no significant changes in phospholipid and inositol phosphate contents.