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Powdery mildew. Powdery mildew is a fungal disease that affects a wide range of plants. Powdery mildew diseases are caused by many different species of ascomycete fungi in the order Erysiphales. Powdery mildew is one of the easier plant diseases to identify, as the signs of the causal pathogen are quite distinctive.
A dried cannabis flower. The short-term effects of cannabis are caused by many chemical compounds in the cannabis plant, including 113 [clarification needed] different cannabinoids, such as tetrahydrocannabinol (THC), and 120 terpenes, [1] which allow its drug to have various psychological and physiological effects on the human body.
Cannabis sativa is an annual herbaceous flowering plant. The species was first classified by Carl Linnaeus in 1753. [ 1 ] The specific epithet sativa means 'cultivated'. Indigenous to Eastern Asia, the plant is now of cosmopolitan distribution due to widespread cultivation. [ 2 ]
In the U.S., the National Institute on Drug Abuse defines medical cannabis as "using the whole, unprocessed marijuana plant or its basic extracts to treat symptoms of illness and other conditions". [ 14 ] A cannabis plant includes more than 400 different chemicals, of which about 70 are cannabinoids. [ 15 ]
Alternaria alternata is a fungus causing leaf spots, rots, and blights on many plant parts, and other diseases. It is an opportunistic [citation needed] pathogen on over 380 host species of plant. It can also cause upper respiratory tract infections [ 1 ] and asthma in humans with compromised immunity. [citation needed]
Phytoplasmas are obligate intracellular parasites of plant phloem tissue and of the insect vectors that are involved in their plant-to-plant transmission. Phytoplasmas were discovered in 1967 by Japanese scientists who termed them mycoplasma -like organisms. [3] Since their discovery, phytoplasmas have resisted all attempts at in vitro culture ...
Gastrointestinal tract. [edit] Long term cannabis users are at risk for developing cannabinoid hyperemesis syndrome (CHS), characterized by recurrent bouts of intense vomiting. The mechanism behind CHS is poorly understood and is contrary to the antiemetic properties of cannabis and cannabinoids.
Rhododendron ponticum showing classic symptoms of Phytophthora kernoviae in the UK. Phytophthora (from Greek φυτόν (phytón), "plant" and φθορά (phthorá), "destruction"; "the plant-destroyer") is a genus of plant-damaging oomycetes (water molds), whose member species are capable of causing enormous economic losses on crops worldwide, as well as environmental damage in natural ...