Chilling Injury and Changes in Adenosine Triphosphate of Cotton Seedlings | Zendy

James McD. Stewart | Zendy; Gene Guinn | Zendy

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Chilling Injury and Changes in Adenosine Triphosphate of Cotton Seedlings

Author(s) -

James McD. Stewart,

Gene Guinn

Publication year - 1969

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.44.4.605

Subject(s) - gossypium hirsutum , adenosine triphosphate , horticulture , chemistry , cold hardening , gossypium , botany , biology , biochemistry

Young Gossypium hirsutum L. seedlings chilled at 5 degrees showed a continual decrease in ATP concentration with time of chilling. Chilled plants returned to optimum conditions were able to restore the initial ATP concentration when chilled only 1 day, but not when chilled 2 days. The decrease in ATP with chilling was prevented by hardening the seedlings at 15 degrees for 2 days (14-hr-day-length) immediately before chilling. The ATP level of hardened plants was higher than of unhardened plants. When hardened plants were chilled at 5 degrees , the ATP level increased in the leaves but decreased in the roots.A mechanism of chilling injury is discussed in relation to the decrease in ATP concentration at low temperature.

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