Title: Relationship Between Auxin and Plant Apical Dominance
Abstract:Auxin is the leading factor of controlling apical dominance.The plant hormone auxin,synthesised in the shoot apex,moves down along the stem and inhibits lateral branching,does not travel upward into t...Auxin is the leading factor of controlling apical dominance.The plant hormone auxin,synthesised in the shoot apex,moves down along the stem and inhibits lateral branching,does not travel upward into the branches,so it must act indirectly;auxin may acts by regulating the production of a second messenger which is transported into the bud.The best documented candidates for such second messengers are cytokinin and a novel graft transmissible signal(MAX-dependent hormone).However,recent study on auxin transport suggests a possible additional mechanism whereby auxin transport in the stem prevents the establishment of auxin transport out of the branches,thus inhibiting their growth.Auxin acts in xylem-associated or medullary cells to mediate apical dominance.Read More
Publication Year: 2008
Publication Date: 2008-01-01
Language: en
Type: article
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