منابع مشابه
Flower petal microtexture is a tactile cue for bees.
Honeybees are shown to be able to detect, learn, and discriminate between microsculptured epidermes of flower petals. The sensilla trichodea at the tips of the bees' antennae are in the same size range as the microsculptural features of the petals (ca. 10 mum), which presumably deflect these mechanoreceptive sensilla in characteristic ways. Honeybees were trained to associate reward with one fl...
متن کاملCrystal structure of the petal death protein from carnation flower.
Expression of the PSR132 protein from Dianthus caryophyllus (carnation, clover pink) is induced in response to ethylene production associated with petal senescence, and thus the protein is named petal death protein (PDP). Recent work has established that despite the annotation of PDP in sequence databases as carboxyphosphoenolpyruvate mutase, the enzyme is actually a C-C bond cleaving lyase exh...
متن کاملThe Flavonoid Pathway Regulates the Petal Colors of Cotton Flower
Although biochemists and geneticists have studied the cotton flower for more than one century, little is known about the molecular mechanisms underlying the dramatic color change that occurs during its short developmental life following blooming. Through the analysis of world cotton germplasms, we found that all of the flowers underwent color changes post-anthesis, but there is a diverse array ...
متن کاملFlower Petal Cell Walls: Changes Associated with Flower Opening and Senescence*
Flowers are prized as objects of great beauty and diversity, and are commercially valuable (~US$4.5 billion in international trade yearly) and highly perishable. Biologically, flower petals have an important role in the lifecycle of plants, as they protect immature reproductive structures, then provide the attraction and accessibility needed for pollination to occur. Flower petal cell wall cons...
متن کاملPlastic tracheostomal-widening procedure: the "petal" technique.
Severe tracheostomal stenosis after total laryngectomy may require the permanent use of a tracheostomy tube which undoubtedly represents a personal and social handicap (cosmetic impairment, accumulation of sputum, noisy breathing, cough stimulation, tube management). In patients with voice prostheses, this is a major obstacle to phonation and device maintenance. Stenosis is so pronounced, in so...
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ژورنال
عنوان ژورنال: JACC: Cardiovascular Interventions
سال: 2013
ISSN: 1936-8798
DOI: 10.1016/j.jcin.2012.12.130