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Strigolactone may interact with gibberellin to control apical dominance in pea (Pisum sativum)
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Strigolactone may interact with gibberellin to control apical dominance in pea (Pisum sativum)
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Journal Article
Strigolactone may interact with gibberellin to control apical dominance in pea (Pisum sativum)
2011
Overview
The role of strigolactones as plant growth regulators has been demonstrated through research on biosynthesis and signaling mutant plants and through the use of GR24, a synthetic analog of this class of molecules. Strigolactone mutants show a bushy phenotype and GR24 application inhibits the growth of axillary buds in these mutants, thus restoring the phenotype of a wild plant, which is characterized by a stronger apical dominance. In this work, we tested the effectiveness of this chemical on pea (
Pisum sativum
) plants following apex removal, which disrupts apical dominance and leads to axillary bud outgrowth. Moreover, we searched for relationships between the response to the strigolactone and gibberellin metabolism by applying GR24 to both climbing and dwarf peas, the latters being mutants for gibberellin biosynthesis. The results suggest that the endogenous level of the bioactive gibberellin GA
1
might modulate the response of decapitated pea plants to GR24, by changing bud sensitivity to the applied strigolactone.
Publisher
Springer Netherlands,Springer Nature B.V
Subject
