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Phakopsora pachyrhizi is an obligate biotrophic pathogen that causes Asian soybean rust. Phakopsora pachyrhizi is able to affect up to 31 different plant species that belong to 17 different genera under natural conditions. Experiments in laboratories were able to use P. pachyrhizi to infect 60 more plant species.
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.
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]
Many flowers and plants deemed safe for humans are toxic for cats, according to the American Society for the Prevention of Cruelty to Animals (ASPCA). So, before you buy flowers for your next big ...
The fungus has more of a damaging impact when infection occurs before or at flowering (Lin and Kelly, 2018 [2]). Fungal infection occurs with direct contact from an already infected soybean pod but the fungus can also spread from seed to seed during plant growth. [2]
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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.
While plants make good additions to most homes, some can carry toxic substances that are unsafe for pets. Avoid these 12 if you have furry pals at home.