Gibberellin Response in Lettuce Hypocotyl Sections
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چکیده
منابع مشابه
Role of Cation and Anion Uptake in Salt-stimulated Elongation of Lettuce Hypocotyl Sections.
The role of cation and anion uptake in salt-stimulated growth of light-grown, GA(3)-treated lettuce (Lactuca sativa L.) hypocotyl sections was investigated. Potassium chloride (10 mm) causes a 2-fold increase in the growth rate of GA(3)-treated hypocotyl sections without affecting the growth rate of sections incubated in the absence of GA(3). Salt uptake is the same in both treatments, and furt...
متن کاملRole of Cation and Anion Uptake in Salt - stimulated Elongation of Lettuce Hypocotyl Sections 1
The role of cation and anion uptake in salt-stimulated growth of light-grown, GA3-treated lettuce (Lactuca sativa L.) hypocotyl sections was investigated. Potassium chloride (10 mM) causes a 2-fold increase in the growth rate of GA3-treated hypocotyl sections without affecting the growth rate of sections incubated in the absence of GA3. Salt uptake is the same in both treatments, and furthermor...
متن کاملHormone-solute interactions in the lettuce hypocotyl hook.
The hypocotyl hook of the lettuce (Lactuca sativa cv. Grand Rapids) seedling is stimulated to a high degree of curvature through a synergistic interaction of ethylene and gibberellic acid in the light. Presentation of various inorganic salts to the seedlings caused extensive alteration of the hormone-induced curvatures, with ammonium and sulfate being the most stimulatory of curvature, and pota...
متن کاملGrowth and gibberellin a(1) metabolism in excised lettuce hypocotyls.
Excised lettuce (Lactuca sativa L. cv. Arctic) hypocotyls retain the ability to elongate in response to exogenously supplied gibberellic acid and gibberellin A(1) (GA(1)). We have studied the relationship between metabolism of GA(1) and elongation in this tissue. In 24 hours at 28 C, hypocotyls treated with 3 mum GA(1) double in length while controls elongate less than 45%. After an exogenous h...
متن کاملMobile gibberellin directly stimulates Arabidopsis hypocotyl xylem expansion.
Secondary growth of the vasculature results in the thickening of plant structures and continuously produces xylem tissue, the major biological carbon sink. Little is known about the developmental control of this quantitative trait, which displays two distinct phases in Arabidopsis thaliana hypocotyls. The later phase of accelerated xylem expansion resembles the secondary growth of trees and is ...
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ژورنال
عنوان ژورنال: Plant Physiology
سال: 1975
ISSN: 0032-0889,1532-2548
DOI: 10.1104/pp.56.2.267