Morphactin stimulates stem elongation and thickening in decapitated shoots of Bryophyllum calycinum Salisb.

• Autorzy: Miyamoto K. , Marasek-Ciolakowska A. , Goraj J. , Wegrzynowicz-Lesiak E. , Ueda J. , Saniewski M.

Warianty tytułu

PL

Morfakyna stymuluje wzrost wydłużeniowy i grubość łodygi w dekapitowanych roślinach Bryophyllum calycinum Salisb.

• Języki publikacji: EN

Abstrakty

EN

Morphactin, methyl 2-chloro-9-hydroxyfluorene-9-carboxylate (IT 3456), is a synthetic growth regulator with a unique action affecting various morphogenetic and physiological processes in plants, and has been characterized as a specific inhibitor of auxin polar transport. Morphactin applied at the last internode in decapitated shoots of Bryophyllum calycinum substantially stimulated elongation and thickening of the internode. Benzyladenine applied alone little affected stem elongation and thickening. Simultaneous application of benzyladenine and morphactin showed a synergistic effect on thickening, while it did not on elongation. These results suggest that morphactin translocated basipetally from the top of the treated internode inhibits auxin polar transport from the internode, resulting in the accumulation of endogenous auxin for elongation and thickening in the treated internode of decapitated shoots of Bryophyllum calycinum.

PL

Morfaktyna, kwas metylo 2-chloro-9-hydroksyfluoreno- 9-karboksylowy (IT 3456), jest syntetycznym regulatorem wzrostu o specyficznym działaniu powodującym zakłócenie wielu morfogenetycznych i fizjologicznych procesów w roślinach, jest specyficznym inhibitorem polarnego transportu auksyn. Morfakyna zastosowana na ostatnie międzywęźle w dekapitowanym pędzie Bryophyllum calycinum silnie stymuluje wydłużenie i zgrubienie tego międzywęźla. Benzyloadenina podana w podobny sposób jak morfaktyna nie powodowała istotnych zmian w porównaniu do roślin kontrolnych. Łączne traktowanie ostatniego międzywęźla po dekapitacji roślin morfaktyną i benzyloadeniną powodowało synergistyczny wpływ tylko na zgrubienie łodygi w porównaniu z traktowaniem samą morfaktyną. Otrzymane wyniki wskazują, że morfaktyna jest przemieszczana bazypetalnie z wierzchołka traktowanego międzywęźla i hamuje polarny transport w tym międzywęźlu, w wyniku tego następuje akumulacja auksyny w tym międzywęźlu powodując wydłużanie i grubienie traktowanego międzywęźla w dekapitowanych roślinach Bryophyllum calycinum.

• Wydawca: -
• Czasopismo: Acta Agrobotanica
• Rocznik: 2013
• Tom: 66
• Numer: 2
• Opis fizyczny: p.21-27,fig.,ref.

Twórcy

autor

Miyamoto K.

• Faculty of Liberal Arts and Sciences, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka 599-8531, Japan

autor

Marasek-Ciolakowska A.

• Research Institute of Horticulture, Konstytucji 3 Maja 1/3, 96-100 Skierniewice, Poland

autor

Goraj J.

• Research Institute of Horticulture, Konstytucji 3 Maja 1/3, 96-100 Skierniewice, Poland

autor

Wegrzynowicz-Lesiak E.

• Research Institute of Horticulture, Konstytucji 3 Maja 1/3, 96-100 Skierniewice, Poland

autor

Ueda J.

• Graduate School of Science, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka 599-8531, Japan

autor

Saniewski M.

• Research Institute of Horticulture, Konstytucji 3 Maja 1/3, 96-100 Skierniewice, Poland

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