NDLI: Effect of inhibitors of ethylene biosynthesis and action, as well as calcium and magnesium on rose shoot rooting, shoot-tip necrosis and leaf senescence in vitro

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Effect of inhibitors of ethylene biosynthesis and action, as well as calcium and magnesium on rose shoot rooting, shoot-tip necrosis and leaf senescence in vitro

Book reviews ( Acta Physiologiae Plantarum , Volume 20 , Issue 1 )

Acta Physiologiae Plantarum : Volume 19

Effect of inhibitors of ethylene biosynthesis and action, as well as calcium and magnesium on rose shoot rooting, shoot-tip necrosis and leaf senescence in vitro

Content Provider	Springer Nature Link
Author	Podwyszyńska, Małgorzata Goszczyńska, Danuta M.
Copyright Year	1998
Abstract	Microcuttings of easy-to-root dwarf rose cv. Starina, showing early symptoms of leaf senescence and shoot-tip necrosis in rooting stage, were chosen for the study. The effects of inhibitors of ethylene biosynthesis (AOA, AIB) and action (AgNO$_{3}$), and Ca$^{2+}$ and Mg$^{2+}$ were studied in relation to rooting, leaf senescence and shoot-tip necrosis. The effects of these substances were examined with respect to IAA presence in a medium, which stimulated leaf yellowing and shoot-tip necrosis. AOA strongly inhibited rooting of microcuttings, but did not affect ethylene biosynthesis. AIB at 250 mg·l$^{−1}$ and AgNO$_{3}$ 2.5 mg·l$^{−1}$ in the presence of IAA did not affect rooting but effectively prevented leaf senescence. Ca$^{2+}$ alone or combined with Mg$^{2+}$ at raised concentration, or an ethylene action inhibitor Ag$^{+}$, reduced shoot-tip necrosis in microcuttings treated with IAA. Addition of Ag$^{+}$ to IAA medium drastically increased ethylene production by the shoots. Interaction between endogenous levels of auxin, ethylene and calcium in relation to rooting, shoot-tip necrosis and leaf senescence was discussed. Ethylene could enhance tissue sensitivity to auxin. Moreover, the tissue of rose shoots is very sensitive in the in vitro condition on standard medium because of the calcium deficiency. Thus, the raised Ca/Mg level counteracted shoot-tip necrosis through enhancing cell membrane and wall resistance to ethylene and IAA.
Starting Page	91
Ending Page	98
Page Count	8
File Format	PDF
ISSN	01375881
Journal	Acta Physiologiae Plantarum
Volume Number	20
Issue Number	1
e-ISSN	18611664
Language	English
Publisher	Springer-Verlag
Publisher Date	1998-01-01
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	rose rooting leaf senescence shoot-tip necrosis ethylene IAA AOA AIB AgNO$_{3}$ Ca$^{2+}$ Mg$^{2+}$ Plant Physiology Plant Genetics & Genomics Plant Biochemistry Plant Pathology Plant Anatomy/Development Agriculture
Content Type	Text
Resource Type	Article
Subject	Physiology Plant Science Agronomy and Crop Science

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