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Catharanthus roseus is an evergreen subshrub or herbaceous plant growing 1 m (39 in) tall. The leaves are oval to oblong, 2.5–9 cm (1.0–3.5 in) long and 1–3.5 cm (0.4–1.4 in) wide, glossy green, hairless, with a pale midrib and a short petiole 1–1.8 cm (0.4–0.7 in) long; they are arranged in opposite pairs.
For instance, it can be observed in certain Chinese rose varieties and specific clones of periwinkle. While the most notable phytoplasma-associated diseases are commonly reported in commercially grown flowering species, virescence also affects horticultural and seed crops, including tomatoes, cabbages, strawberries, and clover, among others. [6]
Rose rosette disease – This disease is caused by a relatively recently described virus, Rose rosette emaravirus, [10] that is transmitted by an eriophyid, rose leaf curl mite (Phyllocoptes fructiphilus), which inhabits the shoot tips and leaf petal bases of roses, as well as by grafting but not by seed or many other common vectors.
Catharanthus is a genus of flowering plants in the family Apocynaceae.Like the genus Vinca, they are known commonly as periwinkles. [3] There are eight known species. Seven are endemic to Madagascar, [4] though one, C. roseus, is widely naturalized around the world.
Such diseases were originally thought to be caused by viruses, which, like phytoplasmas, require insect vectors and cannot be cultured. Viral and phytoplasmic infections share some symptoms. [ 5 ] In 1967, phytoplasmas were discovered in ultrathin sections of plant phloem tissue and were termed mycoplasma-like organisms due to their ...
It has been recorded on Madagascar periwinkle (Catharanthus roseus) and pequi (Caryocar brasiliense). [2] It has been observed as a pollinator of the fringed star orchid (Epidendrum ciliare) in Puerto Rico. [4] The caterpillar has several antipredator adaptations. Its consumption of toxic plants makes it distasteful to most predators.
Bedding plants are usually watered with boom irrigation rather than ebb flood. Water soluble fertilizer metered by injectors and standard soil (growing medium) tests help optimize plant nutrition. Growth regulating chemicals are applied to control plant height. Pests and diseases are managed with pesticides and biological controls. [28] [29
Catharanthus roseus yields alkaloids used in the treatment of cancer. [22] [23] Tabernanthe iboga, Voacanga africana, and Tabernaemontana undulata contain the alkaloid ibogaine, which is a psychedelic drug which may help with drug addiction, but which has significant adverse effects, [24] [25] with ibogaine being both cardiotoxic and neurotoxic ...