Rhizoctonia oryzae-sativae. [Descriptions of Fungi and Bacteria].

1974 ◽  
Author(s):  
J. E. M. Mordue
Keyword(s):  
Oryza Sativa ◽  
Sri Lanka ◽  
Geographical Distribution ◽  
Crop Residues ◽  
Zizania Latifolia ◽  
Zizania Aquatica ◽  
Rhizoctonia Oryzae

Abstract A description is provided for Rhizoctonia oryzae-sativae. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: On Oryza sativa; has been found on O. cubensis, Juncellus serotinus and Zizania latifolia[Zizania aquatica]. DISEASE: Lesions with pale centres and distinct brown margins develop on sheaths. They are usually small (0.5-1 cm) but several may occur together. Attack on culms results in browning, lodging and death. Can also infect roots. GEOGRAPHICAL DISTRIBUTION: China, Japan; Malaya, Sri Lanka, Taiwan, Vietnam. TRANSMISSION: Soil-borne. Is capable of overwintering in soil as sclerotia or mycelium; also in stubble and other crop residues (11, 801).

Rhizoctonia oryzae-sativae. [Distribution map].

1985 ◽  
Author(s):  
Keyword(s):  
Oryza Sativa ◽  
Sri Lanka ◽  
North America ◽  
Geographical Distribution ◽  
Eichhornia Crassipes ◽  
West Bengal ◽  
Distribution Map ◽  
Rhizoctonia Oryzae ◽  
New Distribution

Abstract A new distribution map is provided for Rhizoctonia oryzae-sativae (Saw.) Mordue. Hosts: Rice (Oryza sativa). Information is given on the geographical distribution in ASIA, China, India (West Bengal; Assam; Mysore; W. Tripura), Japan, Korea, Laos, Malaysia (Kedah; Sabah), Sri Lanka, Taiwan, Thailand, Vietnam, AUSTRALASIA & OCEANIA, Australia (Brisbane, on Eichhornia crassipes), EUROPE, Italy, NORTH AMERICA, USA (California).

Rice grassy stunt tenuivirus. [Distribution map].

1997 ◽  
Author(s):  
Keyword(s):  
Oryza Sativa ◽  
Sri Lanka ◽  
Papua New Guinea ◽  
Geographical Distribution ◽  
Tamil Nadu ◽  
Solomon Islands ◽  
New Guinea ◽  
Distribution Map ◽  
Brunei Darussalam ◽  
New Distribution

Abstract A new distribution map is provided for Rice grassy stunt tenuivirus Viruses: Tenuivirus. Hosts: Rice (Oryza sativa). Information is given on the geographical distribution in ASIA, Bangladesh, Brunei, Darussalam, China, India, Kerala, Tamil Nadu, Indonesia, Java, Nusa, Tenggara, Sulawesi, Sumatra, Japan, Kyushu, Korea Republic, Malaysia, Philippines, Sri Lanka, Taiwan, Thailand, Vietnam, OCEANIA, Fiji, Papua New Guinea, Solomon Islands.

Xanthomonas oryzae. [Descriptions of Fungi and Bacteria].

1970 ◽  
Author(s):  
J. F. Bradbury
Keyword(s):  
Geographical Distribution ◽  
Vascular System ◽  
Natural Infection ◽  
The Philippines ◽  
Cyperus Rotundus ◽  
Xanthomonas Oryzae ◽  
Zizania Latifolia ◽  
Tropical Regions ◽  
Zizania Aquatica ◽  
Weed Hosts

Abstract A description is provided for Xanthomonas oryzae. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: On Oryza sativa. Natural infection of Leersia oryzaides, Leersia oryzaides var. japonica and Zizania latifolia[Zizania aquatica] is known (Mizukami & Wakimoto, 1959). Natural infection of Cyperus rotundus and C. difformis was reported in India (48, 460), but inoculation of these hosts in the Philippines failed (48, 1689). By inoculation many wild species of Oryza (45, 1789), Leptochloa filiformis (48, 1689), L. chinensis, L. panacea and Zizania aquatica (48, 1683) have all been found susceptible. DISEASE: Bacterial blight of rice and kresek disease of rice. Blight most commonly appears on leaves of young plants, after planting out, as water-soaked stripes at the margins. These enlarge and coalesce to give the characteristic yellowish lesions with wavy edges that occur mainly along the margins of the upper parts of the leaves. These lesions may later expand to cover much of the leaf, which turns whitish or greyish and dies. Leaf sheaths of the more susceptible varieties may be affected. Kresek, which occurs in tropical regions, is a strong systemic infection in which leaves or whole young plants wither and die. In older plants the leaves become pale yellow. GEOGRAPHICAL DISTRIBUTION: Limited to Asia (CMI Map 304, ed. 2, 1964). Occurrences not shown on this map include Korea, Taiwan and Indonesia (Mizukami & Wakimoto, 1969). TRANSMISSION: Spread locally by wind and rain and also by flood and irrigation waters; gains entry to the field in infected planting material, to the nursery in seed, and to both nursery and field from volunteer rice plants and weed hosts usually via the irrigation water. Overwintering may occur on volunteers, on or in the rhizospheres of weed hosts, in stored infected straw and in seed, but it is unlikely in soil and plant debris exposed to the weather, at least under Japanese conditions (Mizukami & Wakimoto, 1969). Infection is through hydathodes and wounds. Penetration through stomata results in a build-up of bacteria in the intercellular spaces, but it is not until they have been exuded on to the leaf surface and re-admitted through the hydathodes and thence into the vascular system, that symptoms of the disease appear (46, 2720).

Xiphinema ifacolum. [Distribution map].

2010 ◽  
Author(s):  
Keyword(s):  
Oryza Sativa ◽  
Sri Lanka ◽  
South America ◽  
Sierra Leone ◽  
Geographical Distribution ◽  
Cote D'ivoire ◽  
Côte D’Ivoire ◽  
Distribution Map ◽  
Cote D’Ivoire ◽  
New Distribution

Abstract A new distribution map is provided for Xiphinema ifacolum Luc. Nematoda. Hosts: Polyphagous. Major host is rice (Oryza sativa). Information is given on the geographical distribution in Asia (Sri Lanka), Africa (Benin, Cameroon, Cote d'Ivoire, Guinea, Liberia, Sierra Leone, Togo), South America (Brazil, Bahia, Para).

Sarocladium oryzae. [Distribution map].

1990 ◽  
Author(s):  
Keyword(s):  
Saudi Arabia ◽  
Oryza Sativa ◽  
Sri Lanka ◽  
North America ◽  
South America ◽  
Geographical Distribution ◽  
Distribution Map ◽  
New Distribution

Abstract A new distribution map is provided for Sarocladium oryzae (Sawada) W. Gams and D. Hawksw. Hosts: Oryza sativa, Bambusa spp. Information is given on the geographical distribution in AFRICA, Burundi, Gambia, Kenya, Madagascar, Nigeria, ASIA, Bangladesh, Brunei, China, Jiangxi, Guangxi, Sichuan, India, Japan, Malaysia, Philippines, Saudi Arabia, Sri Lanka, Taiwan, Thailand, Vietnam, NORTH AMERICA, USA, LA Mexico, SOUTH AMERICA, Brazil.

Burkholderia glumae. [Distribution map].

1997 ◽  
Author(s):  
Keyword(s):  
Oryza Sativa ◽  
Sri Lanka ◽  
South America ◽  
Geographical Distribution ◽  
Distribution Map ◽  
Burkholderia Glumae ◽  
New Distribution

Abstract A new distribution map is provided for Burkholderia glumae (Kurita & Tabei) Urakami et al. Bacteria Hosts: Rice (Oryza sativa). Information is given on the geographical distribution in ASIA, Japan, Korea Republic, Philippines, Sri Lanka, Taiwan, Vietnam, SOUTH AMERICA, Colombia.

Rice ragged stunt oryzavirus. [Distribution map].

1997 ◽  
Author(s):  
Keyword(s):  
Oryza Sativa ◽  
Sri Lanka ◽  
Geographical Distribution ◽  
Tamil Nadu ◽  
West Bengal ◽  
Peninsular Malaysia ◽  
Distribution Map ◽  
New Distribution

Abstract A new distribution map is provided for Rice ragged stunt oryzavirus Viruses: Reoviridae: Oryzavirus. Hosts: Rice (Oryza sativa). Information is given on the geographical distribution in ASIA, Bangladesh, China, Fujian, Guangdong, Hunan, Jiangxi, Zhejiang, India, Orissa, Tamil Nadu, West Bengal, Indonesia, Java, Nusa, Tenggara, Sulawesi, Sumatra, Japan, Peninsular Malaysia, Malaysia, Philippines, Sri Lanka, Taiwan, Thailand.

Agromyza oryzae. [Distribution map].

2009 ◽  
Author(s):  
Keyword(s):  
Triticum Aestivum ◽  
Oryza Sativa ◽  
Geographical Distribution ◽  
Distribution Map ◽  
Zizania Aquatica ◽  
New Distribution ◽  
Distribution In Europe

Abstract A new distribution map is provided for Agromyza oryzae (Munakata). Diptera: Agromyzidae. Hosts: rice (Oryza sativa), reed (Phragmites spp.), wheat (Triticum aestivum) and annual wildrice (Zizania aquatica). Information is given on the geographical distribution in Europe (Russia) and Asia (Zhejiang, China; Hokkaido and Honshu, Japan; Korea Republic; Philippines; Taiwan; and Thailand).

Rice yellow dwarf phytoplasma. [Distribution map].

1997 ◽  
Author(s):  
Keyword(s):  
Oryza Sativa ◽  
Sri Lanka ◽  
Geographical Distribution ◽  
Tamil Nadu ◽  
Andhra Pradesh ◽  
Peninsular Malaysia ◽  
Yellow Dwarf ◽  
Distribution Map ◽  
Rice Yellow Dwarf Phytoplasma ◽  
New Distribution

Abstract A new distribution map is provided for Rice yellow dwarf phytoplasma Bacteria: Phytoplasmas. Hosts: Rice (Oryza sativa). Information is given on the geographical distribution in ASIA, Bangladesh, China, Fujian, Guangdong, Guangxi, Hainan, Hubei, Hunan, Yunnan, Zhejiang, India, Andhra Pradesh, Assam, Bihar, Delhi, Karnataka, Kerala, Manipur, Orissa, Tamil Nadu, Indonesia, Java, Kalimantan, Sulawesi, Japan, Honshu, Kyushu, Shikoku, Peninsular Malaysia, Malaysia, Philippines, Sri Lanka, Taiwan, Thailand.

Pyrenochaeta oryzae. [Descriptions of Fungi and Bacteria].

1980 ◽  
Author(s):  
Punithalingam. Punithalingam.
Keyword(s):  
Oryza Sativa ◽  
Sri Lanka ◽  
Sierra Leone ◽  
Geographical Distribution ◽  
Leaf Blade ◽  
Solomon Islands ◽  
Brown Spot ◽  
Infected Leaf ◽  
Nephotettix Virescens ◽  
Wet Weather

Abstract A description is provided for Pyrenochaeta oryzae. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOST: Oryza sativa. DISEASE: Sheath blotch of rice or known in Japanese as 'Yosho-kappanbyo' meaning sheath brown spot (Hashioka, 1972). The macroscopic symptoms are large brown lesions on leaf sheaths. At first lesions start from the margin of a sheath as dark brown oblong blotches which enlarge, become bluish-grey, finally covering the entire sheath. Lesions may reach up to 10 cm in length and often appear at the junction of sheath and leaf blade just below the collar without causing the collar to break. When dry the affected part of the sheath turns greyish-brown with or without distinct brown margins. GEOGRAPHICAL DISTRIBUTION: Africa (Sierra Leone, Swaziland); Asia (Burma, China, India, Japan, Malaysia, Philippines, Sri Lanka, Thailand); Australasia & Oceania (Fiji, Solomon Islands). TRANSMISSION: Presumably dispersed in the crop by splash-liberated conidia from infected leaf sheaths and glumes during wet weather. Lesions on leaves also appear at the site of oviposition of the green hopper, Nephotettix bipunctatus[Nephotettix virescens] (Hashioka, 1972).

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