Auxin effectively induces the formation of the secondary abscission zone in Bryophyllum calycinum Salisb. (Crassulaceae) | Zendy

M. Saniewski | Zendy; Justyna Góraj-Koniarska | Zendy; E. Gabryszewska | Zendy; Kensuke Miyamoto | Zendy; Junichi Ueda | Zendy

Open Access

Auxin effectively induces the formation of the secondary abscission zone in Bryophyllum calycinum Salisb. (Crassulaceae)

Author(s) -

M. Saniewski,

Justyna Góraj-Koniarska,

E. Gabryszewska,

Kensuke Miyamoto,

Junichi Ueda

Publication year - 2016

Publication title -

acta agrobotanica

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.4

H-Index - 9

eISSN - 2300-357X

pISSN - 0065-0951

DOI - 10.5586/aa.1660

Subject(s) - abscission , auxin , petiole (insect anatomy) , botany , explant culture , crassulaceae , biology , chemistry , biochemistry , hymenoptera , in vitro , gene

We have found that auxin, indole-3-acetic acid (IAA) substantially induces the formation of the secondary abscission zone in stem and petiole explants and in decapitated stem and petiole after excision of blade in intact plants of Bryophyllum calycinum when IAA at a concentration of 0.1% as lanolin paste was applied in the middle of these organs. The secondary abscission zone was formed at a few mm above of the treatment with IAA, and senescence of the part above abscission zone was observed. IAA additionally applied on the top of explants or top of the dacapitated stem or the debladed petiole totally prevented the secondary abscission zone formation and senescence induced by IAA applied in the middle of these organs. Possible mechanisms of the formation of the secondary abscission zone are discussed in terms of the interaction of auxin and ethylene

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