Peroxidase Activity in the Abscission Zone of Bean Leaves during Abscission [PDF]
Peroxidase activity and localization in the abscission zone of bean leaves were studied histochemically and by gel electrophoresis. Deblading of bean leaves resulted in an increase in peroxidase activity in the abscission zone 2 to 4 days after deblading with highest activity just prior to separation.
B. W. Poovaiah, H. P. Rasmussen
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Soybean endo-β-mannanase GmMAN1 is not associated with leaf abscission, but might be involved in the response to wounding. [PDF]
The objective of this work is to investigate the relationship between endo-β-mannanase and leaf abscission, and response to wounding in soybean (Glycine max).
Min Yan +3 more
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Molecular regulatory events of flower and fruit abscission in horticultural plants
Flower and fruit abscission is a highly programmed physiological process, which is closely related to the yield of horticultural plants. The coordination of many regulatory factors associated with metabolic and signaling pathways plays a key role in the ...
Yuan Shi +6 more
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The anatomy of abscission zones is diverse among grass species [PDF]
PremiseAbscission zones (AZ) are specialized cell layers that separate plant parts at the organ junction upon developmental or environmental signals. Fruit or seed abscission has been well studied in model species because of its crucial role for seed dispersal.
Yunqing Yu +3 more
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Background Fruit abscission depends on cell separation that occurs within specialized cell layers that constitute an abscission zone (AZ). To determine the mechanisms of fleshy fruit abscission of the monocot oil palm (Elaeis guineensis Jacq.) compared ...
Kim Fooyontphanich +11 more
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Cell Separation in Isolated Abscission Zones [PDF]
A technique is described for the isolation and maintenance culture of 250 p;m thick slices of the leaf abscission zone of Ooleus. Such cultures can be observed under the light microscope and a continuous photographic record of the cytological events associated with abscission can be obtained.
T I Davenport, NG Marinos
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Leaf shedding as an anti-bacterial defense in Arabidopsis cauline leaves. [PDF]
Plants utilize an innate immune system to protect themselves from disease. While many molecular components of plant innate immunity resemble the innate immunity of animals, plants also have evolved a number of truly unique defense mechanisms ...
O Rahul Patharkar +2 more
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Petal abscission in fragrant roses is associated with large scale differential regulation of the abscission zone transcriptome [PDF]
AbstractFlowers of fragrant roses such as Rosa bourboniana are ethylene-sensitive and undergo rapid petal abscission while hybrid roses show reduced ethylene sensitivity and delayed abscission. To understand the molecular mechanism underlying these differences, a comparative transcriptome of petal abscission zones (AZ) of 0 h and 8 h ethylene-treated ...
Singh, Priya +7 more
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Timing of leaf abscission is an important trait for biomass production and seasonal acclimation in deciduous trees. The signaling leading to organ separation, from the external cue (decreasing photoperiod) to ethylene-regulated hydrolysis of the middle ...
Xu eJin +3 more
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Abscission of flowers and floral organs is closely associated with alkalization of the cytosol in abscission zone cells [PDF]
In vivo changes in the cytosolic pH of abscission zone (AZ) cells were visualized using confocal microscopic detection of the fluorescent pH-sensitive and intracellularly trapped dye, 2',7'-bis-(2-carboxyethyl)-5(and-6)-carboxyfluorescein (BCECF), driven by its acetoxymethyl ester.
Sundaresan, Srivignesh +6 more
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