Handbook of Plant and Crop Physiology

VA Wittenbach. Effect of pod removal on leaf photosynthesis and soluble protein composition of field-grown soybeans. Plant Phys ...

PJ Green. The ribonucleases of higher plants. Annu Rev Plant Physiol Plant Mol Biol 45:421–445, 1994. CB Taylor, PA Bariola, SB ...

K van Leyen, RM Duvoisin, H Engelhardt, M Wiedmann. A function for lipoxygenase in programmed organelle degradation. Nature 395 ...

GNM Kumar, NR Knowles. Changes in lipid peroxidation and lipolytic and free-radical scavenging enzyme activities during aging a ...

JE Garbarino, WR Belknap. Isolation of a ubiquitin-ribosomal protein gene (ubi3) from potato and expression of its promoter in ...

V Grbic, AB Bleecker. Ethylene regulates the timing of leaf senescence in Arabidopsis. Plant J 8:595–602, I John, R Drake, A ...

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10 Abscission Roy Sexton Stirling University, Stirling, Scotland 205 I. GENERAL FEATURES OF ABSCISSION A. Definitions During its ...

one or two rows of cells [1]. If the scar faces are examined after fracture, separation seems to have oc- curred along the line ...

D. Mechanical Forces and Separation Although the walls of living cells in the abscission zone (AZ) are enzymically degraded, mec ...

The cell separation process does not usually involve the entire AZ but only a narrow layer of cells across it. The cells actuall ...

arsenal of compounds produced in the fracture surface to prevent infection. These protective mechanisms must be very efficient, ...

During the growth phase of a fruit, abscission seems to be inhibited by the presence of the develop- ing seeds. Mature fruit are ...

terial for biochemical studies and regulators can readily be applied directly to the abscising region (Fig- ure 6). C. Early Exp ...

In 1955, Osborne [50] showed that diffusates from senescent petioles contained a soluble factor that accelerated explant absciss ...

The finding that auxin induced ethylene formation was to provide an explanation of the opposing ef- fects of auxin in stages 1 a ...

concentrations of 0.5 to 1.0 L/L that are necessary to cause accelerated abscission if added exogenously [72]. Because AZs are ...

is a competitive inhibitor and also interferes with natural abscission [74,75]. Sisler [77] has shown that diazocyclopentadiene ...

is a series of papers in which no simple relationship was shown to exist between endogenous ABA and leaf [105,106], fruit, or fl ...

K. Other Potential Regulators Both gibberellic acid and cytokinins will influence abscission, although they are thought to be le ...