Cyanide-insensitive Respiration in Pea Cotyledons | Zendy

Terrance W. James | Zendy; Mary S. Spencer | Zendy

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Cyanide-insensitive Respiration in Pea Cotyledons

Author(s) -

Terrance W. James,

Mary S. Spencer

Publication year - 1979

Publication title -

plant physiology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.554

H-Index - 312

eISSN - 1532-2548

pISSN - 0032-0889

DOI - 10.1104/pp.64.3.431

Subject(s) - cyanide , respiration , seedling , germination , mitochondrion , biology , cellular respiration , botany , biochemistry , chemistry , organic chemistry

Mitochondria isolated by a zonal procedure from the cotyledons of germinating peas possessed a cyanide-resistant respiration. This respiration was virtually absent in mitochondria isolated during the first 24 hours of germination but thereafter increased gradually until the 6th or 7th day of seedling development. At this time between 15 and 20% of the succinate oxidation was not inhibited by cyanide. The activity of the cyanide-resistant respiration was also determined in the absence of cyanide. Relationships among mitochondrial structure, cyanide-resistant respiration, and seedling development are discussed.

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