Petal abscission in rose is associated with the differential expression of two ethylene-responsive xyloglucan endotransglucosylase/hydrolase genes, RbXTH1 and RbXTH2
نویسندگان
چکیده
منابع مشابه
Petal abscission in rose is associated with the differential expression of two ethylene-responsive xyloglucan endotransglucosylase/hydrolase genes, RbXTH1 and RbXTH2
Abscission is a process that involves shedding of plant organs from the main plant body. In this study it is shown that the process of petal separation in the fragrant rose, Rosa bourboniana, is accompanied by the expression of two xyloglucan endotransglucosylase/hydrolase genes, RbXTH1 and RbXTH2. The sequences of the two genes show 52% amino acid identity but are conserved at the catalytic si...
متن کاملDifferential expression of several xyloglucan endotransglucosylase/hydrolase genes regulates flower opening and petal abscission in roses
Flower opening is a process that requires movement of petals from a closed position to a horizontal open position, while petal abscission requires cell-wall disassembly. Both processes are controlled by ethylene and require cell-wall modification at the junction (abscission zone) of the petal and thalamus to facilitate the movement or separation of petals. In the present study, a family of xylo...
متن کاملTranscriptional activation of a 37 kDa ethylene responsive cysteine protease gene, RbCP1, is associated with protein degradation during petal abscission in rose
Cysteine proteases play an important role in several developmental processes in plants, particularly those related to senescence and cell death. A cysteine protease gene, RbCP1, has been identified that encodes a putative protein of 357 amino acids and is expressed in the abscission zone (AZ) of petals in rose. The gene was responsive to ethylene in petals, petal abscission zones, leaves, and t...
متن کاملcomparison of the amount of debris extruded apically in two rotary techniques: flexmaster and m2
چکیده ندارد.
15 صفحه اول1-MCP blocks ethylene-induced petal abscission of Pelargonium peltatum but the effect is transient
Continual exposure to 1.5 ml l ethylene caused 100% petal abscission within 2 h from detached flowers of Pelargonium peltatum (L.) ‘Pink Blizzard’ (ivy geranium) harvested just after the stigmatic lobes had separated. When flowering plants were first pretreated for 2 h with 1 ml l 1-MCP, ethylene-induced petal abscission was completely inhibited. However, the effect was transient, since percent...
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ژورنال
عنوان ژورنال: Journal of Experimental Botany
سال: 2011
ISSN: 0022-0957,1460-2431
DOI: 10.1093/jxb/err209