bluuebunny/crossref_metadata_2025_split huggingface dataset:
Phacidiopycnis padwickii
. [Descriptions of Fungi and Bacteria].
Authors: UK, CAB International  , Punithalingam E. 
Published: July 2021

Abstract

A description is provided for
Phacidiopycnis padwickii
. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOST:
Cicer arietinum
(chick pea or gram). DISEASE: Collar rot, foot rot, wilt or blight of chick pea or gram (
Cicer arietinum
). Symptoms are drying up of plants from the tip downwards, the leaves becoming pale green to yellowish and finally drop off. The collar turns brown and sometimes roots and rootless may also be involved. GEOGRAPHICAL DISTRIBUTION: India: Bihar; Delhi; Haryana (Karnal); Madhya Pradesh (Gwalior); Punjab (Gurdaspur, Ludhiyana); Rajasthan (Alwar, Bayana, Bharatpur, Chaksu, Dasu, Rajakhera); Uttar Pradesh (Gorakphur). CMI Map. 514, ed. 1, 1976. TRANSMISSION: By inoculation trials it has been found that severe infection and death occurs in 14-81% of different chick pea varieties grown from seeds sown in soil heavily infested with
P. padwickii
(Kheswalla, 1941). Immersion of seeds in a suspension of conidia yielded only a small proportion of infected seedlings. The fungus has been reported to survive from May to October both in sterilized and unsterilized soil, farmyard manure, crop debris either exposed or buried up to 15 cm (57, 3715).
Phomopsis cotoneastri
. [Descriptions of Fungi and Bacteria].
Authors: UK, CAB International  , Punithalingam E. 
Published: July 2021

Abstract

A description is provided for
Phomopsis cotoneastri
. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS:
Cotoneaster dammeri, Cotoneaster
spp. DISEASE: 'Slow decay' (slow dieback) of
Cotoneaster
(55, 1284). GEOGRAPHICAL DISTRIBUTION: Asia (Japan), Europe (Germany, U.K.). TRANSMISSION: The mode of natural infection and factors which favour the spread of dieback of
Cotoneaster
has not been fully investigated. It has been reported that entry into stem is through wounds. It is highly probable that conidia are disseminated by water splash.
Phomopsis dioscoreae
. [Descriptions of Fungi and Bacteria].
Authors: UK, CAB International  , Punithalingam E. 
Published: July 2021

Abstract

A description is provided for
Phomopsis dioscoreae
. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS:
Dioscorea alata, D. esculenta, D. floribunda
and
D. rotundata
. DISEASE: Leaf spot of
Dioscorea
spp. (yams). GEOGRAPHICAL DISTRIBUTION: Africa (Nigeria); Asia (India, Philippines); Australasia & Oceania (Solomon Is); TRANSMISSION: Not known. Most probably by water-borne conidia during wet conditions.
Phyllachora conica
. [Descriptions of Fungi and Bacteria].
Authors: UK, CAB International  , Cannon P. F. 
Published: July 2021

Abstract

A description is provided for
Phyllachora conica
. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS:
Machaerium acutifolium, M. angustifolium, M. biorulatum, M. humboldtianum, M. Iunatum
(syn.
Drepanocarpus lunatus
),
M. moritzianum, M. robiniifolium, M. tobagense
. DISEASE: Tar spot of leaves. GEOGRAPHICAL DISTRIBUTION: Bolivia, Brazil, Colombia, Costa Rica, Dominican Republic, Panama, Puerto Rico, Trinidad, Venezuela, Virgin Is. TRANSMISSION: Probably by wind-blown ascospores, though no research is available. The conidia are probably spermatial in function.
Phyllachora leucospila
. [Descriptions of Fungi and Bacteria].
Authors: UK, CAB International  , Cannon P. F. 
Published: July 2021

Abstract

A description is provided for
Phyllachora leucospila
. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS:
Aganope
sp.,
Millettia barteri, M. chrysophylla, M. lane-poolei, M. rhodantha, M. warner
(syn.
M. porphyrocalyx
). DISEASE: Necrotic leaf spot. GEOGRAPHICAL DISTRIBUTION: Ghana, Guinea, Sierra Leone. TRANSMISSION: Almost certainly by dispersal of ascospores on air currents.
Phyllachorama chaeriicola
. [Descriptions of Fungi and Bacteria].
Authors: UK, CAB International  , Cannon P. F. 
Published: July 2021

Abstract

A description is provided for
Phyllachorama chaeriicola
. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS:
Machaerium amplum, M. ferox
(syn.
Drepanocarpus ferox
),
M. humboldtianum, M. moritzianum, M. robiniifolium, M. tobagense
. DISEASE: Tar spot of leaves, sometimes causing a small degree of necrosis. GEOGRAPHICAL DISTRIBUTION: Bolivia, Brazil, Colombia, Peru, Trinidad and Venezuela. TRANSMISSION: Almost certainly by airborne dispersal of ascospores. No research has been carried out.
Phyllachora millettiae
. [Descriptions of Fungi and Bacteria].
Authors: UK, CAB International  , Cannon P. F. 
Published: July 2021

Abstract

A description is provided for
Phyllachora millettiae
. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS:
Millettia caudata, M. aura, M. ferruginea, M. rubiginosa
. DISEASE: Tar spot of leaves. GEOGRAPHICAL DISTRIBUTION: India, Kenya,? Rwanda, Tanzania. TRANSMISSION: This has not been studied, but is likely to occur by ascospores dispersing on air currents.
Aecidium mori
. [Descriptions of Fungi and Bacteria].
Authors: UK, CAB International  , Mordue J. E. M. 
Published: July 2021

Abstract

A description is provided for
Aecidium mori
. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Mulberry, including
Morus alba, M. bombycis
and
M. indica
; also on
Broussonetia
spp. DISEASE: Rust of mulberry. GEOGRAPHICAL DISTRIBUTION: Asia: Afghanistan, Burma, China, India, Indonesia, Japan, Korea, Pakistan, Philippines, Taiwan, Thailand (CMI Distr. Map 602, 1989). TRANSMISSION: By aeciospores, which are disseminated by air currents and water splash; possibly also by infected propagation material (50: 1308).
Apiosporina collinsii
. [Descriptions of Fungi and Bacteria].
Authors: UK, CAB International  , Sivanesan A. 
Published: July 2021

Abstract

A description is provided for
Apiosporina collinsii
. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS:
Amelanchier
spp. (
A. alnifolia, A. canadensis, A. cusickii, A. florida, A. pallida, A. spicata, A. utahensis
). DISEASE: Witches' broom disease of
Amelanchier
. GEOGRAPHICAL DISTRIBUTION: Canada, USA. TRANSMISSION: By airborne ascospores and conidia.
Monosporascus cannonballus
. [Descriptions of Fungi and Bacteria].
Authors: UK, CAB International  , Sivanesan A. 
Published: July 2021

Abstract

A description is provided for
Monosporascus cannonballus
. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS:
Cumumis melo
,
C. sativus
,?
Medicago saliva, Trifolium pratense
. DISEASE: Root rot of melon. GEOGRAPHICAL DISTRIBUTION: India, Japan, USA (Arizona).
Ramularia collo-cygni
. [Descriptions of Fungi and Bacteria].
Authors: UK, CAB International  , Sutton B. C. 
Published: July 2021

Abstract

A description is provided for
Ramularia collo-cygni
. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS:
Glyceria grandis, Hordeum vulgare, Phalaris arundinacea, Triticum secalum
(Triticale). DISEASE: Leaf and awn spot of
Gramineae
, especially winter and summer barley. GEOGRAPHICAL DISTRIBUTION: Europe: Austria. North America: Mexico, USA. TRANSMISSION: Wind and water dispersed.
Spiroplasma kunkelii
. [Descriptions of Fungi and Bacteria].
Authors: UK, CAB International  , Bradbury J. F. 
Published: July 2021

Abstract

A description is provided for
Spiroplasma kunkelii
. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS:
Zea mays
is the major natural host.
Euchlaena mexicana
and
E. perennis
are known experimental hosts and may be involved in the epidemiology of this disease. Various other plants have been infected by artificial inoculation using leafhopper vectors. e.g. Broad bean and
Vinca rosea
[Catharanthus roseus]
using
Euscelidius variegatus
(57, 565) but these are probably not natural hosts. DISEASE: Corn/maize stunt. Infected maize is stunted and shows chlorotic stripes and often reddish purple leaf margins (69, 1042). Some plants have been found to be infected but show no symptoms. This is a major disease limiting maize production in tropical lowlands of America. GEOGRAPHICAL DISTRIBUTION: Widespread in tropical lowland America, from Texas in the north to the lowlands of Bolivia in the south (62, 166). Reports include USA: California, Florida (69, 1042), Michigan (Whitcomb
et al.
, 1986); Texas; Mexico (69, 1042); Jamaica (62, 2437); Nicaragua (67, 1283); Peru (66, 3773); Brazil (Paranfi, 65 4390) and possibly Venezuela with very low incidence (57, 133). TRANSMISSION: The principal vector is the leaf hopper
Dalbulus maidis
but other leaf hoppers, such as
Euscelidius variegatus, Dalbulus longulus, Cicadulina
and
Baldulus
spp., have been shown to acquire and transmit the pathogen experimentally (64, 160, 3831; 63, 1748, 5332). No other method of transmission has been found.
Xylella fastidiosa
. [Descriptions of Fungi and Bacteria].
Authors: UK, CAB International  , Bradbury J. F. 
Published: July 2021

Abstract

A description is provided for
Xylella fastidiosa
. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: The host range is wide. Natural hosts of economic importance include
Vitis vinifera, Prunus persica, P. amygdalus, P. saliciana, Morus rubra, Acer rubrum, Quercus rubra
and
Ulmus americana
(Wells
et al.
, 1987).
Medicago sativa
(Lucerne/alfalfa) has long been considered a host (53, 635) but unfortunately isolates have not recently been examined. Many other natural hosts have been reported, including
Ambrosia artemisiifolia, Ampelopsis arborea, Baccharis halimifolia, Callicarpa americana, Catharanthus roseus, Citrus jambhiri, Fragaria vesca
var.
californica, Montia linearis, Parthenocissus quinquefolia, Platanus occidentalis, Quercus falcata, Q. laurifolia, Q. nigra, Rhus
sp.,
Rubus procerus, Sambucus canadensis, Solidago fistulosa, Vinca minor
and
Vitis rotundifolia
, many of which are common wild plants in Florida and California (67, 5110; 63, 1898). In addition various plants have been artificially infected in experiments. DISEASE: Pierce's disease of grape, a severe leaf scald and die-back; also causes a leaf scorch of maple, almond, plum, oak, elm, mulberry etc., a wilt in periwinkle and wilting and stunting of ragweed. It also causes phony disease of peach in which trees have a compact appearance due to shortened internodes, come into leaf and flower a little early and have smaller, more highly coloured fruit. The symptoms are not very definite but the disease can be further recognised by cutting root sections and immersing them in acidified methanol (1 ml conc. HCI in 100 ml absolute methanol). Infected roots show purplish spots within a minute or two where vessels contain bacteria. The pathogen inhabits the xylem and produces a toxin. It causes restriction of flow, leading to wilting and scorch, and may produce other symptoms of systemic infection such as chlorosis and stunting. A progressive die-back may be seen with virulent strains and susceptible hosts. GEOGRAPHICAL DISTRIBUTION: USA (California, Florida, GA, NC), Costa Rica, Venezuela (
IMI Distribution Map
262, ed. 3, 1980; 59, 2855; 60, 6035; 66, 2452; 68, 569). Also recently reported from India, but identified only by symptoms and testing with acidified methanol (68, 897). TRANSMISSION: Various leafhoppers have been observed to transmit this disease, including
Carneocephala fulgida, Draeculacephala minerva
(65, 1977),
Graphocephala atropunctata
(61, 338),
Oncometopia nigricans, Homalodisca coagulata
(62, 3417). Lush growth of weeds frequently favours multiplication of these vectors and hence favours spread of any bacteria that may be present.
Xylophilus ampelinus
. [Descriptions of Fungi and Bacteria].
Authors: UK, CAB International  , Bradbury J. F. 
Published: July 2021

Abstract

A description is provided for
Xylophilus ampelinus
. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOST:
Vitis vinifera
. DISEASE: Bacterial blight of the grapevine; 'Tsilik marasi' in Greece; 'Maladie d'Oleron' in France; 'Mel nero' in Italy; 'Vlamsiekte' in South Africa. In early spring buds on infected spurs fail to open or make stunted growth which eventually dies. Affected spurs often appear slightly swollen because of hyperplasia of the cambial tissue. Cracks appear along such spurs and enlarge to form cankers. Young shoots may develop pale yellowish-green spots on the lowest internodes. These expand upwards on the shoot, darken, crack and develop into cankers. Cracks and later cankers also form on more woody branches later in spring. In summer, cankers are often seen on the sides of petioles causing a characteristic one-sided necrosis of the leaf. They may also appear on main and secondary flower and fruit stalks. Leaf spots and marginal necrosis sometimes occur. Gum formation is not necessarily a symptom. GEOGRAPHICAL DISTRIBUTION: South Africa, France, Greece (including Crete), Italy (including Sardinia and Sicily), Spain, Turkey (68, 367). (
IMI Distribution Map
531, ed 2, 1986). TRANSMISSION: Bacteria are carried by moisture to wounds, leaf scars and other sites where infection may take place. Primary infection can take place without wounding. Grafting and pruning can cause much spread of the disease. Overhead irrigation contributes to spread and development (51, 551). Observations indicate that sources of infection survive in vines even after removal of visibly infected parts.
Arthrinium phaeospermum
. [Descriptions of Fungi and Bacteria].
Authors: UK, CAB International  , Kirk P. M. 
Published: July 2021

Abstract

A description is provided for
Arthrinium phaeospermum
. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS:
Agropyron, Ammophila, Anona, Araucaria, Arundinaria, Arachis, Argemone, Arrhenatherum, Arundo, Bambusa, Brassica, Bromus, Calamagrostis, Carex, Cocos, Citrus, Cladium, Coelogyne, Coffea, Cortaderia, Cratueva, Dactylis, Dendrocalamus, Dioscorea, Eleusine, Elymus, Fagus, Fragaria, Glyceria, Gynerium, Hedera, Hordeum, Justicia, Lens, Liriope, Lycopersicon, Magnolia, Malus, Maranta, Musa, Nicotiana, Oryza, Panicum, Persea, Phalaris, Phaseolus, Pinus, Pisum, Phragmites, Phyllostachys, Picea, Pinus, Piper, Prunus, Psamma, Pteridium, Ranwolfia, Saccharum, Smilax, Solanum, Sorghum, Tectona, Theobroma, Trifolium, Triticum, Valeriana, Vigna, Vitis, Zea
; also from air, animals (including man), soil and plant debris, straw, silage and wood. DISEASE: None as a primary pathogen of plants; frequently encountered as a secondary invader (of potato tubers) or as a saprophyte. GEOGRAPHICAL DISTRIBUTION: AFRICA: Algeria, Kenya, Malawi, Nigeria, Sierra Leone, South Africa Spain (Canary Islands), Sudan, Tanzania, Zambia, Zimbabwe. ASIA: Bangladesh, Bhutan, Hong Kong, India, Iraq, Japan, Nepal, Pakistan, Malaysia (Peninsular Malaysia), Philippines, Thailand. AUSTRALASIA & OCEANIA: Australia, Guadalcanal, New Zealand. EUROPE: Cyprus, Eire, Germany, Greece, Netherlands, Portugal, Spain, Sweden, Turkey, UK. NORTH AMERICA: Canada, USA. SOUTH AMERICA: Argentina. TRANSMISSION: By unknown means.
Dictyoarthrinium sacchari
. [Descriptions of Fungi and Bacteria].
Authors: UK, CAB International  , Kirk P. M. 
Published: July 2021

Abstract

A description is provided for
Dictyoarthrinium sacchari
. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS:
Allium, Ananas, Asparagus, Bambusa, Borassus, Cajanus, Capsicum, Cassia, Citrus, Cymbopogon, Delonix, Dendrocalamus, Dracaena, Eichhornia, Erianthus, Erythrina, Euphorbia, Gossypium, Ipomoea, Lycopersicon, Mimusops, Oldenlandia, Oryza, Panicum, Phragmites, Saccharum, Pinus, Viola, Zinnia
; also from soil and wood. DISEASE: None as a primary pathogen of plants; frequently encountered as a secondary invader or as a saprophyte. GEOGRAPHICAL DISTRIBUTION: AFRICA: Egypt, Ghana, Nigeria, Sudan, Zimbabwe. ASIA: Brunei, India, Malaysia (Peninsular Malaysia), Sri Lanka. SOUTH AMERICA: Venezuela. TRANSMISSION: By unknown means.
Memnoniella echinata
. [Descriptions of Fungi and Bacteria].
Authors: UK, CAB International  , Kirk P. M. 
Published: July 2021

Abstract

A description is provided for
Memnoniella echinata
. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS:
Abutilon, Achyranthes, Allium, Amorphophallus, Bombax, Brassica, Calotropis, Camellia, Carica, Cassia, Corchorus, Coriandrum, Cosmos, Citrus, Datura, Dianthus, Eucalyptus, Fagus, Glycine, Gmelina, Hehanthus, Hevea, Hibiscus, Hordeum, Litchi, Lagenaria, Lawsonia, Medicago, Musa, Oryza, Pennisetum, Phlox, Pisum, Phyllanthus, Picea, Psidium, Ricinus, Sesamum, Shorea, Solanum, Solidago, Sorghum, Stachylarpheta, Stereospermum, Tetragona, Tragopogon, Trigonella, Triticum, Vanda, Verbena, Vicia, Zingiber
; also from air, paper, soil and plant debris, textiles, and wood. DISEASE: None as a primary pathogen of plants; frequently encountered as a secondary invader or as a saprophyte. GEOGRAPHICAL DISTRIBUTION: AFRICA: Egypt, Ghana, South Africa, Zimbabwe. ASIA: Bangladesh, India, New Caledonia, Pakistan, Malaysia (Sabah), Sri Lanka. AUSTRALASIA & OCEANIA: Australia, New Zealand, Solomon Islands. EUROPE: UK. NORTH AMERICA: Bermuda. CENTRAL AMERICA & WEST INDIES: Trinidad. TRANSMISSION: By unknown means.
Nigrospora sphaerica
. [Descriptions of Fungi and Bacteria].
Authors: UK, CAB International  , Kirk P. M. 
Published: July 2021

Abstract

A description is provided for
Nigrospora sphaerica
. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS:
Abelmoschus, Acacia, Acropera, Album, Ananas, Anthurium, Amaranthus, Andropogon, Arachis, Aralia, Araucaria, Areca, Argemone, Artocarpus, Arundinaria, Asparagus, Axonopus, Bambusa, Banhinia, Bridelia, Brassica, Cajanus, Calamus, Calotropis, Camellia, Capsicum, Cardamomum, Carex, Carica, Coriandrum, Cenchrus, Centrosema, Chasmopodium, Chloris, Cicer, Cinnamomum, Citrullus, Citrus, Cocos, Coffea, Coix, Cola, Colea, Coriandrum, Crotalaria, Cucumis, Culcasia, Cupressus, Cymbopogon, Cyperus, Dianthus, Dichanthium, Dioscorea, Elaeis, Emblica, Erianthus, Eriobotrya, Eucalyptus, Euphorbia, Feronia, Ficus, Fragaria, Gladiolus, Glycine, Gomphrena, Gossypium, Hevea, Hibiscus, Hordeum, Hydrangea, Hymantrudae, Hyparrhenia, Ipomoea, Jatropha, Lactuca, Luffa, Lycopersicon, Macadamia, Mormodica, Morus, Lathyrus, Malus, Mangifera, Musa, Nicotiana, Neomarica, Nephelium, Nothofagus, Oncidium, Ophiuros, Oryza, Oxytenanthera, Panicum, Papaver, Pelargonium, Pennisetum, Pueraria, Phalaenopsis, Phaseolus, Phragmites, Physalis, Pinus, Piper, Pistia, Populus, Prunus, Pseudotsuga, Psidium, Psophocarpus, Pyrethrum, Raphanus, Ricinus, Robinia, Rosa, Rottboellia, Saccharum, Salvia, Shorea, Solanum, Sorghum, Sporobolus, Sphenoclea, Stevia, Stigmaphyllon, Strychnos, Tabebuia, Tabemaemontana, Theobroma, Trichosanthes, Trigonella, Triticum, Vicia, Vitex, Xanthosoma, Zea, Zizyphus
; also from air, animals (including man and
Ceroplastus
), soil and plant debris, and stored foods. DISEASE: None as a primary pathogen of plants; frequently encountered as a secondary invader or as a saprophyte. Associated with 'squirter' and 'black end' disease of banana. GEOGRAPHICAL DISTRIBUTION: AFRICA: Cameroon, Egypt, Ethiopia, Ghana, Guinea, Kenya, Madagascar, Malawi, Mauritius, Mozambique, Nigeria, Seychelles, Sierra Leone, South Africa, Spain (Canary Islands), Sudan, Tanzania, Togo, Uganda, Zambia, Zimbabwe. ASIA: Bangladesh, Brunei, Burma, Hong Kong, India, Indonesia, Iraq, Nepal, Pakistan, Malaysia (Peninsular Malaysia, Sabah), Philippines, Sarawak, Sri Lanka, Syria. AUSTRALASIA & OCEANIA: Australia, Fiji, Guadalcanal, New Zealand, Norfolk Islands, Papua New Guinea, Tonga. EUROPE: Italy, Turkey, UK. NORTH AMERICA: Canada, USA. CENTRAL AMERICA & WEST INDIES: Cuba, Honduras, Jamaica, Trinidad, Windward Islands. SOUTH AMERICA: Argentina, Bolivia, Brazil, Chile, Peru, Venezuela. TRANSMISSION: By unknown means.
Pithomyces graminicola
. [Descriptions of Fungi and Bacteria].
Authors: UK, CAB International  , Kirk P. M. 
Published: July 2021

Abstract

A description is provided for
Pithomyces graminicola
. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS:
Brachiaria, Caryota, Elaeis, Ipomoea, Phaseolus, Pinus, Saccharum, Solanum, Sorghum, Stylosanthes
; also from air and soil. DISEASE: None as a primary pathogen of plants; frequently encountered as a secondary invader or as a saprophyte. GEOGRAPHICAL DISTRIBUTION: AFRICA: Nigeria, South Africa, Zambia, Zimbabwe. ASIA: India, Sri Lanka. AUSTRALASIA & OCEANIA: Australia, Solomon Islands. CENTRAL AMERICA & WEST INDIES: Honduras. TRANSMISSION: By unknown means.
Pythium acanthophoron
. [Descriptions of Fungi and Bacteria].
Authors: UK, CAB International  , Hall G. 
Published: July 2021

Abstract

A description is provided for
Pythium acanthophoron
. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS:
Ananas sativus, Brassica chinensis, Cicer arietinum, Daucus carota, Eucalyptus regnans, Gossypium
sp.,
Larix
sp.,
Lolium perenne, Phaseolus vulgaris, Pinus
sp.,
Trifolium subterraneum
. In artificial infections:
Absidia glauca, Basidiobolus ranarum, Entomophthora coronata, Fusarium solani, Mucor hiemalis, Pythium myriotylum
. Also in soil around ginger and bedding plants, and in sand dunes. DISEASE: Leaf rot of pineapple, root rot of beans (61, 3765), and a range of other non-specific root rots, although the fungus seems only weakly pathogenic to most plant hosts; a facultatively necrotrophic plant pathogen and also a mycoparasite. It seems to have a more important role as a mycoparasite, particularly of
Zygomycetes
, and may be present around roots, parasitizing root infecting fungi. GEOGRAPHICAL DISTRIBUTION: Asia; China (Guangdong), India, Japan, Philippines. Australasia & Oceania; Australia (Vic., WA). Europe; UK (Scotland, Wales). North America; USA (Hl). TRANSMISSION: Presumably by mycelial growth in moist infected soils. Oospores and zoosporangia have been shown to survive in soil rather than in plant debris (62, 802), and serve as perennating structures. Oospores may be dispersed by wind from dry soil.
Pythium tracheiphilum
. [Descriptions of Fungi and Bacteria].
Authors: UK, CAB International  , Hall G. 
Published: July 2021

Abstract

A description is provided for
Pythium tracheiphilum
. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS:
Lactuca saliva, Spinacea oleracea
. DISEASE: Vascular wilt and stem rot of lettuce; a facultatively necrotrophic plant pathogen. Symptoms are severe stunting and wilting of young or maturing plants, vascular browning and necrotic leaf lesions, which may be large or small and restricted (58, 2495). GEOGRAPHICAL DISTRIBUTION: Europe; Germany, Italy, Netherlands, Sweden, UK (England). North America: USA (WI). TRANSMISSION: Presumably by zoospores in moist soil and by rapid mycelial growth. Oospores and resting spores probably act as perennating structures.