Journal ArticleDOI
The biological activities of 26 gibberellins in nine plant bioassays
TLDR
The activities of gibberellins A1–A15, A17–A27 and A8-glucoside are compared, using original and previously published data, in the barley (Hordeum vulgare L.) aleurone α-amylase, Progress No. 9 dwarf pea, lettuce, cucumber, and 'Tan-ginbozu' dwarf rice bioassays.Abstract:
The activities of gibberellins A1–A15, A17–A27 and A8-glucoside are compared, using original and previously published data, in the barley (Hordeum vulgare L.) aleurone α-amylase, Progress No. 9 dwa...read more
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Journal ArticleDOI
Hormone concentrations in tobacco roots change during arbuscular mycorrhizal colonization with Glomus intraradices
Orna Shaul-Keinan,Vijay Gadkar,Idit Ginzberg,José M. Grünzweig,Ilan Chet,Yigal Elad,Smadar Wininger,Edi Belausov,Yuval Eshed,Nir Atzmon,Yossi Ben-Tal,Yoram Kapulnik +11 more
TL;DR: It is demonstrated that hormonal changes do occur during AM symbiosis with tobacco, before the fungal benefits manifest, as well as during the early stages of colonization by Glomus intraradices, using advanced analytical detection techniques.
Journal ArticleDOI
The Current Status of Research on Gibberellin Biosynthesis
Peter Hedden,Peter Hedden +1 more
TL;DR: The current understanding of gibberellin metabolism and its regulation is described, highlighting the more recent advances in this field.
Journal ArticleDOI
Plant hormone conjugation
TL;DR: For each class of the plant hormones so-called ‘bound’ hormones have been found, the early literature this term was applied to hormones bound to other low-molecular-weight substances or associated with macromolecules or cell structures irrespective of whether structural elucidation had been achieved.
Journal ArticleDOI
Effects of Photoperiod on Growth Rate and Endogenous Gibberellins in the Long-Day Rosette Plant Spinach
TL;DR: It is suggested that a higher rate of gibberellin biosynthesis combined with increased sensitivity to gibb Berellin is responsible for the observed growth responses in spinach under long days.
Journal ArticleDOI
Effects of Daylength on Endogenous Gibberellins in Leaves of Solanum andigena
I. D. Railton,P. F. Wareing +1 more
TL;DR: The chloroplasts of leaves exposed to short days contained less gibberellin-like substances than those from leaves grown under permanent long day conditions.
References
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Journal ArticleDOI
The bioassay of gibberellins
R L Jones,Joseph E. Varner +1 more
TL;DR: This bioassay has been successfully applied to the estimation of gibberellin-like substances in plant extracts and has the following advantages: release of α-amylase is one step closer to the primary site of action of GA.
Journal ArticleDOI
Studies on the biosynthesis of gibberellins from (−)-kaurenoic acid in cultures of Gibberella Fujikuroi
TL;DR: A study of the time-course of the conversion of kaurenoic acid into gibberellins provides evidence that the sequence of steps involves an overall change toward higher oxidation levels, with GA-4 and GA-7 at an earlier stage on the synthetic pathway than GA-1 andGA-3.
Journal ArticleDOI
Proposed procedure for the allocation of trivial names to the gibberellins.
Jake MacMillan,Noriko Takahashi +1 more
TL;DR: Continuity of the sequence gibberellins A1 to A17 has been maintained, and confusion avoided, for the following two reasons.
Journal ArticleDOI
Studies in seed dormancy
J. W. Bradbeer,B. Colman +1 more
TL;DR: The dormancy of hazel seeds (Kent cob nuts) has been found to be broken by less than 30 days chilling at 5° C, and it is suggested that the block to the germination of dormant seeds may be in the partial blockage of a metabolic pathway.