Metabolism of 3H-Gibberellin A1 and 3H-Gibberellin A4 by Phaseolus coccineus Seedlings
نویسندگان
چکیده
منابع مشابه
Selective binding of (3H)gibberellin A1 by protein fractions from dwarf pea epicotyls.
A homogenate from dwarf pea seedlings that had been treated with [(3)H]gibberellin A(1) was separated by Sephadex G-200 into two protein fractions, of high and intermediate molecular weight, with affinity for [(3)H]gibberellin A(1). Neither fraction bound [(3)H]gibberellin A(8), the only metabolite of [(3)H]gibberellin A(1) detected in significant quantity in extracts of pea seedlings. These pr...
متن کاملGibberellin A4 monohydrate
The title compond, C(19)H(24)O(5)·H(2)O, has two gibberellin A4 mol-ecules and two water mol-ecules in the asymmetric unit. The A and B rings have chair conformations, whereas the C and D rings have envelope conformations; the two rings which contain the lactone and carbonyl bridge adopt chair and envelope conformations. The crystal structure is established by O-H⋯O hydrogen bonds and supported...
متن کاملExpression of two genes encoding gibberellin 2- and 3-oxidases in developing seeds of Phaseolus coccineus.
We have isolated PcGA3ox1, a cDNA clone from developing runner bean (Phaseolus coccineus) seeds that shows significant amino acid homology with the gibberellin (GA) 3-oxidases. A recombinant fusion protein of PcGA3ox1 converted GA20 and GA9 to GA1 and GA4, respectively. In situ hybridization results showed that transcripts of this gene accumulate specifically within the suspensor of globular-st...
متن کاملGibberellin metabolism and signaling.
Gibberellins (GAs) are a family of plant hormones controlling many aspects of plant growth and development including stem elongation, germination, and the transition from vegetative growth to flowering. Cloning of the genes encoding GA biosynthetic and inactivating enzymes has led to numerous insights into the developmental regulation of GA hormone accumulation that is subject to both positive ...
متن کاملGibberellin homeostasis in tobacco is regulated by gibberellin metabolism genes with different gibberellin sensitivity.
Gibberellins are phytohormones that regulate growth and development of plants. Gibberellin homeostasis is maintained by feedback regulation of gibberellin metabolism genes. To understand this regulation, we manipulated the gibberellin pathway in tobacco and studied its effects on the morphological phenotype, gibberellin levels and the expression of endogenous gibberellin metabolism genes. The o...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Plant Physiology
سال: 1975
ISSN: 0032-0889,1532-2548
DOI: 10.1104/pp.55.1.42