Increased Abscisic Acid Biosynthesis during Plant Dehydration Requires Transcription | Zendy

Felix D. Guerrero | Zendy; John E. Mullet | Zendy

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Increased Abscisic Acid Biosynthesis during Plant Dehydration Requires Transcription

Author(s) -

Felix D. Guerrero,

John E. Mullet

Publication year - 1986

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.80.2.588

Subject(s) - abscisic acid , dehydration , cordycepin , turgor pressure , transcription (linguistics) , biosynthesis , protein biosynthesis , biochemistry , biology , chemistry , microbiology and biotechnology , gene , botany , linguistics , philosophy

Excised pea plants were rapidly dehydrated to turgor pressures of 1.5 to 2.0 bars. After a 30 minute lag, abscisic acid (ABA) levels increased approximately 100-fold in the dehydrated plants. Pretreatment of plants with the transcription inhibitors actinomycin D or cordycepin or with an inhibitor of cytoplasmic protein synthesis prior to plant dehydration inhibited the synthesis of ABA. These results suggest that dehydration induced synthesis of ABA requires nuclear gene transcription.

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