Effects of Light on the Rate of Respiration in the Stem of Pisum Sativum L | Zendy

Norvell W. Hunter | Zendy; Roy Hunter | Zendy; John W. King | Zendy; Addison V. Pinkney | Zendy

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Effects of Light on the Rate of Respiration in the Stem of Pisum Sativum L

Author(s) -

Norvell W. Hunter,

Roy Hunter,

John W. King,

Addison V. Pinkney

Publication year - 1956

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.31.2.167

Subject(s) - pisum , sativum , respiration , respiration rate , biology , botany , horticulture , chemistry

Ii(loleacetic acid is inactivated by mushroom tyrosinase or a tyrosinase present in dialyzed extracts of Osmunda leaves, but only when catechol or pyrogallol are also added. Tyrosine and DOPA do not promote IAA inactivation, although these phenols are oxidized by the enzvme. It appears probable that a reaction occurs between IAA and one of the intermediate compounds formed during the oxidation of catechol or pyrogallol. Possible mechanisms for the reaction, as well as its implications for auxin destruction in plant extracts are discussed.

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