Related Research Articles
A leaf spot is a limited, discoloured, diseased area of a leaf that is caused by fungal, bacterial or viral plant diseases, or by injuries from nematodes, insects, environmental factors, toxicity or herbicides. These discoloured spots or lesions often have a centre of necrosis. Symptoms can overlap across causal agents, however differing signs and symptoms of certain pathogens can lead to the diagnosis of the type of leaf spot disease. Prolonged wet and humid conditions promote leaf spot disease and most pathogens are spread by wind, splashing rain or irrigation that carry the disease to other leaves.
Richard William Timm was a Catholic Priest, educator, zoologist, and development worker. He was the Superior of the Congregation of Holy Cross in Dhaka and a member of the Sacred Heart of Jesus Province. He was also one of the founders of Notre Dame College in Dhaka, Bangladesh. He was the 6th principal of Notre Dame College.
Aphelenchoides ritzemabosi is a plant pathogenic nematode. It was first scientifically described in 1890 in England. This nematode has a wide host range. Among the most important species affected are Chrysanthemums and strawberries. A. ritzemabosi is a migratory foliar feeding nematode. It can feed both ectoparasitically and endoparasitically, with the later causing the most significant damage. When adequate moisture is present, this nematode enters the leaves and feeds from inside the tissue. Typical damage is characterized by necrotic zones between the veins of the leaves. Its lifecycle is short; only ten days from egg to mature adult. A single female can lay as many as 3,500 eggs. This pest can be difficult to control. Host plant resistance, hot water treatments, and predatory mites are recommended.
Pratylenchus coffeae is a plant-pathogenic nematode infecting several hosts including potato, banana, sweet potato, strawberry, Persian violet, peanut and citrus.
Aphelenchoides arachidis is a plant pathogenic nematode.
Aphelenchoides besseyi is a plant pathogenic nematode. It is sometimes referred to as rice white tip, spring dwarf, strawberry bud, flying strawberry nematode or strawberry crimp disease nematode. This foliar nematode is found in Africa, North, Central, and South America, Asia, Eastern Europe, and Pacific islands.
Aphelenchoides parietinus is a plant pathogenic nematode.
Pratylenchus is a genus of nematodes known commonly as lesion nematodes. They are parasitic on plants and are responsible for root lesion disease on many taxa of host plants in temperate regions around the world. Lesion nematodes are migratory endoparasites that feed and reproduce in the root and move around, unlike the cyst or root-knot nematodes, which may stay in one place. They usually only feed on the cortex of the root. Species are distinguished primarily by the morphology of the stylets.
Foliar nematodes are plant parasitic roundworms in the genus Aphelenchoides. The three most economically important species are Aphelenchoides fragariae, A. ritzemabosi, and A. besseyi. Foliar nematodes are becoming a widespread and serious problem for the ornamental and nursery industries. A. fragariae causes damage on hundreds of different plants including chrysanthemum, begonia, gloxinia, African violet, cyclamen, and a wide variety of bedding plants and ferns, causing brown to black, vein-delimited lesions on leaf tissue, defoliation, and possible stunting of plants.
Fern nematode may refer to:
Bursaphelenchus xylophilus, commonly known as pine wood nematode or pine wilt nematode (PWN), is a species of nematode that infects trees in the Pinus genus of coniferous trees and causes the disease pine wilt. While native to North America, it spread in the early 20th century to Japan and in the latter half of the century to other areas of Asia, including China, Taiwan, and Korea, as well as to Europe, including Portugal and Spain.
The nematodes or roundworms constitute the phylum Nematoda, with plant-parasitic nematodes also known as eelworms. They are a diverse animal phylum inhabiting a broad range of environments. Less formally, they are categorized as helminths, but are taxonomically classified along with arthropods, tardigrades and other moulting animals in the clade Ecdysozoa. Unlike the vaguely similar flatworms, nematodes have a tubular digestive system, with openings at both ends. Like tardigrades, they have a reduced number of Hox genes, but their sister phylum Nematomorpha has kept the ancestral protostome Hox genotype, which shows that the reduction has occurred within the nematode phylum.
Aphelenchoides is a genus of mycetophagous nematodes. Some species are plant pathogenic foliar nematodes.
Antarctica is one of the most physically and chemically extreme terrestrial environments to be inhabited by lifeforms. The largest plants are mosses, and the largest animals that do not leave the continent are a few species of insects.
Aphelenchoididea is a nematode superfamily in the order Rhabditida. Its members can be found inside bodies of species from the families Lepidoptera and Blattodea.
Aphelenchoididae is a nematode family in the order Aphelenchida.
Aphelenchoides subtenuis is a plant pathogenic nematode. It is an important cause of disease in daffodils (Narcissus).
Aphelenchoides bicaudatus is a nematode parasite of Elaeidobius kamerunicus, Vigna marina, and Agaricus bisporus.
Cladonia glauca or the glaucous cup lichen is a species of fruticose, cup lichen in the family Cladoniaceae. Found in Europe, it was formally described as a new species in 1828 by German botanist Heinrich Gustav Flörke. The nematodes Aphelenchoides lichenicola and Ottolenchus cabi feed on this lichen.
References
- ↑ "Aphelenchoides coffeae em raízes de gerânio | Wageningen University and Research Library catalog". library.wur.nl. Retrieved 2023-09-21.
- ↑ Carvalho, J. C. (1953). "Aphelenchoides coffeae in geranium roots". Revista Do Instituto Adolfo Lutz. 13: 33–35. ISSN 0073-9855. PMID 13186383.
