Pythium spinosum

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Pythium spinosum
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Clade: Diaphoretickes
Clade: SAR
Clade: Stramenopiles
Phylum: Oomycota
Order: Peronosporales
Family: Pythiaceae
Genus: Pythium
Species:
P. spinosum
Binomial name
Pythium spinosum
Sawada, (1926)

Pythium spinosum is a plant pathogen infecting a wide variety of crops. Hosts observed to be infected include rice in Taiwan, [1] Primula , Impatiens , soil in Florida, [2] Cucumis melo in South Korea (as damping off), [3] and soybeans in Arkansas USA, [4] China, [4] and Indiana USA. [4]

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Melon necrotic spot virus (MNSV) is a virus that belongs to the genus Gammacarmovirus of the family Tombusviridae. It has been observed in several countries of the Americas, Africa, Asia, and Europe. It is considered to be an endemic virus in greenhouses and field productions of Cucurbitaceae crops, including melon, cucumber, and watermelon. MNSV is mainly spread through infected soil, seedlings, insects, and by the root-inhabiting fungus vector Olpidium bornovanus. Symptoms vary between Curbitaceae crops, but generally consist of chlorosis, brown necrotic lesions, leaf wilt, fruit decay, and plant death. Management of the disease consists of preventing infection by rotating fields and crops, steam sterilization, and disposal of infected plants. Also, treated seeds with heat or chemicals are efficient in preventing infection. MNSV is important in melon plants as it causes vast economical damage worldwide reducing significant yields.

References

  1. Anonymous (1979). "List of plant diseases in Taiwan. (8303)". Pl. Protect. Soc., Republ. of China: 1–404.{{cite journal}}: Cite journal requires |journal= (help)
  2. Garzón, Carla D.; Yánez, Jeniffer M.; Moorman, Gary W. (2007). "Pythium cryptoirregulare, a new species within the P. irregulare complex". Mycologia . 99 (2). Informa UK Limited: 291–301. doi:10.1080/15572536.2007.11832589. ISSN   0027-5514. PMID   17682782. S2CID   218590127.
  3. Park, Mi-Jeong; Back, Chang-Gi; Han, Kyung-Sook; Park, Jong-Han (2016-09-30). "Occurrence of Damping-off Caused by Pythium spinosum on Cucumis melo in Korea". Research in Plant Disease . 22 (3). Korean Society of Plant Pathology: 190–193. doi: 10.5423/rpd.2016.22.3.190 . ISSN   1598-2262.
  4. 1 2 3 "U.S. National Fungus Collections Database results". Fungal Databases, U.S. National Fungus Collections . 2020-12-08. Retrieved 2020-12-08.