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Soybean rust is a disease that affects soybeans and other legumes. It is caused by two types of fungi, Phakopsora pachyrhizi, commonly known as Asian soybean rust, and Phakopsora meibomiae, commonly known as New World soybean rust. P. meibomiae is the weaker pathogen of the two and generally does not cause widespread problems.
The disease reaches its climax when the crop begins flowering. The cycle of the pathogen continues until the crop is defoliated or until the environment becomes unfavorable to the pathogen. [8] The Asian soybean rust is a polycyclic disease: within the disease cycle, the asexual urediniospores keep infecting the same plant.
[citation needed] White pine blister rust, wheat stem rust, soybean rust, and coffee rust are examples of notoriously damaging threats to economically important crops. [3] Climate change may increase the prevalence of some rust species while causing others to decline through increased CO 2 and O 3 , changes to temperature and humidity, and ...
Fungal diseases; Alternaria leaf spot Alternaria spp. [citation needed] Anthracnose Colletotrichum truncatum Colletotrichum dematium f. truncatum Glomerella glycines Colletotrichum destructivum [anamorph] Black leaf blight Arkoola nigra. Black root rot Thielaviopsis basicola Chalara elegans [synanamorph] Brown spot Septoria glycines
Symptoms appear as dark red to black lesions on the lower surface of the leaves. They appear as sunken lesions surrounded by a raised brown-black border on the pods, petioles and stems. Very small black fruiting bodies of the fungus are usually visible in older lesions. [3] Other symptoms include shedding of leaves, flower and pod abortion. [3]
When the soybean cyst nematode is a J2 it may then enter the root of the plant, usually just behind the root tip. [9] Once the SCNs have gained entry into the root, they can create specialized feeding cells called syncytia by penetrating the pericycle, endodermis , or cortex cell with their stylet in order to take in nutrients from the plant. [ 9 ]
2. Chipotle (2015–2018) A fast food chain’s reputation takes a major hit after one serious food poisoning outbreak. So, it’s unfathomable that Chipotle is still going strong, given it didn ...
Phialophora gregata is a Deuteromycete [1] fungus that is a plant pathogen which causes the disease commonly known as brown stem rot of soybean. P. gregata does not produce survival structures, but has the ability to overwinter as mycelium in decaying soybean residue.