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White mold affects a wide range of hosts and causes sclerotinia stem rot. It is known to infect 408 plant species. As a nonspecific plant pathogen, [2] diverse host range and ability to infect plants at any stage of growth makes white mold a serious disease. The fungus can survive on infected tissues, in the soil, and on living plants.
Orchid seeds are very small (0.35mm to 1.50mm long), spindle-shaped, and have an opening at the pointed end. [5] Each seed has an embryo that is undifferentiated and lacks root and shoot meristems. [3] An orchid seed does not have enough nutritional support to grow on its own, and lacks endosperm. [2]
Odontoglossum ringspot virus (ORSV) is a plant pathogenic virus that belongs to the family Virgaviridae. It is one of the most common viruses affecting cultivated orchids, perhaps second only to the Cymbidium mosaic virus. [1] It causes spots on leaves and colored streaks on flowers. [1]
Best method of treatment is removal of infected tissue. [10] Anthracnose: a group of fungal diseases that cause leaf spots, blotches, dieback, and others. Spreads in wet conditions. [11] Black rot: fungal disease that spreads quickly through plant tissue, turning it black. Spreads by splashing water between affected plants. [12]
Rhizoctonia was introduced in 1815 by French mycologist Augustin Pyramus de Candolle for anamorphic plant pathogenic fungi that produce both hyphae and sclerotia.The name is derived from Ancient Greek, ῥίζα (rhiza, "root") + κτόνος (ktonos, "murder"), and de Candolle's original species, Rhizoctonia crocorum (teleomorph Helicobasidium purpureum), is the causal agent of violet root ...
The orchid family is one of the largest flowering plant families in the world. Orchids can be found on every continent except Antarctica, from the steamy jungles of Asia to the dry deserts of ...
Candida albicans infection; Candida parapsilosis infection; Cytomegalovirus infection; diphtheria; human coronavirus infection; respiratory distress syndrome; measles; meconium aspiration syndrome
Cephalanthera austiniae is a species of orchid known as the phantom orchid and snow orchid [2] because the entire plant is white except for a few yellow markings on the flowers. The orchid is native to the western United States ( California , Oregon , Washington and Idaho ), and to British Columbia , Canada.