Molecular and physiological mechanisms regulating tissue reunion in incised plant tissues

Journal of Plant Research
Masashi Asahina, Shinobu Satoh

Abstract

Interactions among the functionally specialized organs of higher plants ensure that the plant body develops and functions properly in response to changing environmental conditions. When an incision or grafting procedure interrupts the original organ or tissue connection, cell division is induced and tissue reunion occurs to restore physiological connections. Such activities have long been observed in grafting techniques, which are advantageous not only for agriculture and horticulture but also for basic research. To understand how this healing process is controlled and how this process is initiated and regulated at the molecular level, physiological and molecular analyses of tissue reunion have been performed using incised hypocotyls of cucumber (Cucumis sativus) and tomato (Solanum lycopersicum) and incised flowering stems of Arabidopsis thaliana. Our results suggest that leaf gibberellin and microelements from the roots are required for tissue reunion in the cortex of the cucumber and tomato incised hypocotyls. In addition, the wound-inducible hormones ethylene and jasmonic acid contribute to the regulation of the tissue reunion process in the upper and lower parts, respectively, of incised Arabidopsis stems. Ethylene and jas...Continue Reading

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Citations

Mar 31, 2015·Journal of Plant Research·Keiko Sugimoto
Jul 28, 2016·Plant Science : an International Journal of Experimental Plant Biology·Samuel Daniel LupJosé Manuel Pérez-Pérez
Sep 24, 2016·Plant Signaling & Behavior·Lyuqin ChenWu Liu
Dec 20, 2016·The New Phytologist·Jing WangRongling Wu
Dec 29, 2020·Frontiers in Plant Science·Aatifa RasoolParvaiz Ahmad

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