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RESPIRATORY METABOLISM IN ISOLATED ORCHID PETAL CELLS
Author(s) -
HEW C. S.,
YIP K. C.
Publication year - 1987
Publication title -
new phytologist
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.742
H-Index - 244
eISSN - 1469-8137
pISSN - 0028-646X
DOI - 10.1111/j.1469-8137.1987.tb00898.x
Subject(s) - petal , respiration , biology , cyanide , botany , respiratory system , carbohydrate metabolism , cellular respiration , respiratory quotient , chemistry , biochemistry , anatomy , inorganic chemistry
S ummary A respiratory drift has been demonstrated in cells isolated from petals of Aranda flowers at different stages of development. Tight buds had a respiratory quotient of 0˙5; this increased to 0˙7 in the first flower and reached 1˙0 in the mature flower. There appeared to be a non‐glycolytic pathway contribution in addition to the EMP pathway in tight bud and newly opened flower stages. Carbohydrate metabolism in the mature flower proceeds predominantly via the EMP pathway. Cyanide‐insensitive respiration was demonstrated in the tight bud. There was a shift towards cyanide‐sensitive respiration as the flower developed.