Fungal hosts for the chrysanthemum nematode, Aphelenchoides ritzemabosi

There are nematodes of several genera that feed on plant stems and foliage, including Aphelenchoides, Bursaphelenchus, Anguina, Ditylenchus and Litylenchus. Herein, we apply the common name “foliar nematode” specifically to plant-feeding nematodes in the genus Aphelechoides, specifically Aphelenchoides besseyi, Aphelenchoides fragariae, and Aphelenchoides ritzemabosi. While most members of Aphelenchoides are fungivorous (feed on fungi), these three species have populations that are facultative plant-parasites that can feed on live plant tissue. Ten other species of Aphelenchoides also are recognized as facultative plant-parasites, but these are not as commonly encountered or as economically significant as the aforementioned species. Unlike most plant-parasitic nematodes, foliar nematodes can infest the aerial portions of plants rather than dwelling strictly in soil and plant roots. Damage from their feeding can reduce yield in food crops and ruin the appearance of ornamentals.https://edis.ifas.ufl.edu/in1279

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Aphelenchoides ritzemabosi. [Distribution map].

Distribution Maps of Plant Diseases ◽

10.1079/dmpd/20066500808 ◽

2000 ◽

Author(s):

Keyword(s):

Western Siberia ◽

Fragaria X Ananassa ◽

Fragaria Ananassa ◽

Distribution Map ◽

Jammu And Kashmir ◽

Southern Russia ◽

Chrysanthemum X Morifolium ◽

New Distribution ◽

Distribution In Europe ◽

Aphelenchoides Ritzemabosi

Abstract A new distribution map is provided for Aphelenchoides ritzemabosi (Schwartz) Steiner & Buhrer Nematoda: Aphelenchida: Aphelenchoididae Hosts: Mainly Chrysanthemum x morifolium, also strawberry (Fragaria x ananassa[Fragaria ananassa]), Dahlia and other plants. Information is given on the geographical distribution in EUROPE, Bulgaria, Denmark, Germany, Hungary, Ireland, Italy, Mainland Italy, Latvia, Netherlands, Poland, Portugal, Madeira, Russia, Southern Russia, Western Siberia, Spain, Canary Islands, Mainland Spain, Switzerland, UK, Ukraine, Yugoslavia (Fed. Rep.), ASIA, China, Guizhou, India, Himachal Pradesh, Jammu and Kashmir, Japan, Honshu, Kazakhstan, Korea Republic, Uzbekistan, AFRICA, Mauritius, South Africa, NORTH AMERICA, Mexico, USA, California, Colorado, Florida, Wyoming, SOUTH AMERICA, Brazil, Bahia, Sao Paulo, Chile, Venezuela, OCEANIA, Fiji, New Zealand.

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The Nature of Resistance in Chrysanthemum Varieties To Aphelenchoides Ritzemabosi

Nematologica ◽

10.1163/187529261x00270 ◽

1961 ◽

Vol 6 (1) ◽

pp. 49-58 ◽

Cited By ~ 7

Author(s):

H.R. Wallace

Keyword(s):

Aphelenchoides Ritzemabosi

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Identification and Characterization of a Fatty Acid- and Retinoid-Binding Protein Gene (Ar-far-1) from the Chrysanthemum Foliar Nematode, Aphelenchoides ritzemabosi

International Journal of Molecular Sciences ◽

10.3390/ijms20225566 ◽

2019 ◽

Vol 20 (22) ◽

pp. 5566

Author(s):

Shan-Wen Ding ◽

Dong-Wei Wang ◽

Yu Xiang ◽

Chun-Ling Xu ◽

Hui Xie

Keyword(s):

Fatty Acid ◽

Developmental Stages ◽

Sequence Similarity ◽

Interaction Mechanism ◽

Muscle Layer ◽

Parasitic Nematodes ◽

Foliar Nematode ◽

Plant Parasitic ◽

Aphelenchoides Ritzemabosi

The chrysanthemum foliar nematode (CFN), Aphelenchoides ritzemabosi, is a migratory, plant-parasitic nematode that is widely distributed and infects the aboveground parts of many plants. The fatty acid- and retinoid-binding proteins (FAR) are nematode-specific proteins that are involved in the development, reproduction, and infection of nematodes and are secreted into the tissues to disrupt the plant defense reaction. In this study, we obtained the full-length sequence of the FAR gene (Ar-far-1) from CFN, which is 727 bp and includes a 546 bp ORF that encodes 181 amino acids. Ar-FAR-1 from CFN has the highest sequence similarity to Ab-FAR-1 from A. besseyi, and they are located within the same branch of the phylogenetic tree. Fluorescence-based ligand-binding analysis confirmed that recombinant Ar-FAR-1 was bound to fatty acids and retinol. Ar-far-1 mRNA was expressed in the muscle layer, intestine, female genital system, and egg of CFN, and more highly expressed in females than in males among the four developmental stages of CFN. We demonstrated that the reproduction number and infection capacity of CFN decreased significantly when Ar-far-1 was effectively silenced by in vitro RNAi. Ar-far-1 plays an important role in the development, reproduction, infectivity, and pathogenesis of CFN and may be used as an effective target gene for the control of CFN. The results provide meaningful data about the parasitic and pathogenic genes of CFN to study the interaction mechanism between plant-parasitic nematodes and hosts.

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Vermehrung Und Schadwirkung Von Aphelenchoides Ritzemabosi Und Ditylenchus Dipsaci in Virusfreiem Und in Tmv-Infiziertem Tabak

Nematologica ◽

10.1163/187529269x00371 ◽

1969 ◽

Vol 15 (3) ◽

pp. 334-336 ◽

Cited By ~ 3

Author(s):

B. Weischer

Keyword(s):

Ditylenchus Dipsaci ◽

Aphelenchoides Ritzemabosi

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A SIMPLE METHOD FOR REARING PURE POPULATIONS OF THE FOLIAR NEMATODE, APHELENCHOIDES RITZEMABOSI, IN THE LABORATORY

Canadian Journal of Zoology ◽

10.1139/z59-071 ◽

1959 ◽

Vol 37 (5) ◽

pp. 707-711 ◽

Cited By ~ 8

Author(s):

K. C. Sanwal

Keyword(s):

Thin Film ◽

Leaf Tissue ◽

Ventral Surface ◽

Mature Female ◽

High Humidity ◽

Simple Method ◽

Foliar Nematode ◽

Aphelenchoides Ritzemabosi

A direct infestation method as a means of rearing pure populations of A phelenchoides ritzemabosi is described. A mature female is placed directly on the ventral surface of the leaf on a tiny droplet or a thin film of water. Reproduction takes place after successful entry of the nematode into the leaf tissue. The progeny of this female is then transferred to new leaves and the procedure is continued. Methods of maintaining high humidity around the leaves are described. The use of 'mist propagation frames' to enhance the spread of disease in greenhouse beds is recommended.

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