Heinrich Anton de Bary

Phytophthora infestans is an oomycete or water mold, a fungus-like microorganism (oomycete) that causes the serious potato and tomato disease known as late blight or potato blight. Early blight, caused by Alternaria solani, is also often called "potato blight". Late blight was a major culprit in the 1840s European, the 1845–1852 Irish, and the 1846 Highland potato famines. The organism can also infect some other members of the Solanaceae. The pathogen is favored by moist, cool environments: sporulation is optimal at 12–18 °C (54–64 °F) in water-saturated or nearly saturated environments, and

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 cause economic losses on crops worldwide, as well as environmental damage in natural ecosystems. The cell wall of Phytophthora is made up of cellulose. The genus was first described by Heinrich Anton de Bary in 1875. Approximately 210 species have been described, although 100–500 undiscovered Phytophthora species are estimated to exist.

Podosphaera pannosa is a plant pathogen. It produces a powdery mildew on members of the rose family.

Sclerotinia sclerotiorum is a plant pathogenic fungus and can cause a disease called white mold if conditions are conducive. S. sclerotiorum can also be known as cottony rot, watery soft rot, stem rot, drop, crown rot and blossom blight. A key characteristic of this pathogen is its ability to produce black resting structures known as sclerotia and white fuzzy growths of mycelium on the plant it infects. These sclerotia give rise to a fruiting body in the spring that produces spores in a sac which is why fungi in this class are called sac fungi (Ascomycota). This pathogen can occur on many

Peronosporaceae are a family of water moulds that contains 21 genera, comprising more than 600 species. Most of them are called downy mildews. Many species of Peronosporaceae are obligate biotrophic plant pathogens. They parasitise their host plants as an intercellular mycelium using haustoria to penetrate the host cells. The downy mildews reproduce asexually by forming sporangia on distinctive white sporangiophores usually formed on the lower surface of infected leaves. These constitute the "downy mildew". The sporangia are wind-dispersed to the surface of other leaves. According to the

Entyloma is a genus of smut fungi in the family Entylomataceae. The genus was described by Anton de Bary in 1874. A 2008 estimates places about 180 species in the genus. The anamorph form of Entyloma is Entylomella.

Synchytrium is a large genus of plant pathogens within the phylum Chytridiomycota. Species are commonly known as false rust or wart disease. Approximately 200 species are described, and all are obligate parasites of angiosperms, ferns, or mosses. Early species were mistakenly classified among the higher fungi (Ascomycota or Basidiomycota) because of their superficial similarity to the rust fungi. Anton de Bary and Mikhail S. Woronin recognized the true nature of these fungi and established the genus to accommodate Synchytrium taraxaci, which grows on dandelions, and S. succisae, which grows

Aphanomyces is a genus of water moulds. As of 2003 there were about 45 described species. Many of these water moulds are known as ecologically important pathogens of species of plants and animals, including fish, crustaceans, and agricultural crop plants. Aphanomyces water moulds are "one of the most important yield-limiting factors in production of legumes and sugarbeet." Some of these water moulds are host-specific, such as A. iridis, which only infects irises. Others can infest several hosts, such as A. euteiches, which grows on several legumes. The disease that manifests in plants

Chrysomyxa ledi is a fungus. It occurs in Eurasia throughout the range of its broad-leaved hosts. The aecial stage is found on native and exotic spruces in Europe, including white and Engelmann spruces.

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Sphaceloma is a genus of ascomycete fungi. Its species are plant pathogens, and cause anthracnose and scab diseases. The widespread genus is estimated to contain 52 species.

Podosphaera tridactyla is a fungal plant pathogen that causes powdery mildew in multiple Prunus species.

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The Melanotaenium is a genus of smut fungi in the family Melanotaeniaceae. It includes species such as smut fungus Melanotaenium cingens (Beck) Magnus which was found parasitizing Linaria genistifolia (L.) Mill. (Plantaginaceae family) on Chornomorsky (Tendra Island, Kherson Oblast, Ukraine) in 2007.

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