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You searched for: Journal name Tropical plant pathology Remove constraint Journal name: Tropical plant pathology Publication year rev 7983-2017 Remove constraint Publication year rev: 7983-2017 Source 2017 v.42 no.6 Remove constraint Source: 2017 v.42 no.6
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1. Characterization and pathogenicity to geranium of Brazilian strains of Ralstonia spp.

Author:
Maurício Rossato; Thais R. Santiago; Eduardo S. G. Mizubuti; Carlos A. Lopes
Source:
Tropical plant pathology 2017 v.42 no.6 pp. 458-467
ISSN:
1983-2052
Subject:
Pelargonium peltatum; Ralstonia solanacearum; bacterial wilt; bioterrorism; carrier state; crop losses; ecotypes; genetic variation; pathogens; phylotype; potatoes; virulence; Brazil; United States
Abstract:
... Ralstonia solanacearum (race 3 biovar 2, phylotype IIB, brown-rot ecotype) became an agent of bioterrorism in the USA after the assessment that its introduction in association with geranium plants would affect other crops, especially potatoes. Because race3 biovar 2 is ubiquitous in Brazil and geranium cuttings are exported to many countries, two geranium species were challenged with 32 Brazilian ...
DOI:
10.1007/s40858-017-0177-x

2. Characterization of Iranian Tomato aspermy virus isolates with a variant 2b gene sequence

Author:
Mohammad Maddahian; Hossein Massumi; Jahangir Heydarnejad; Akbar Hosseini Pour; Arvind Varsani
Source:
Tropical plant pathology 2017 v.42 no.6 pp. 475-484
ISSN:
1983-2052
Subject:
Chenopodium giganteum; Chrysanthemum morifolium; Cucumis sativus; Petunia hybrida; RNA; Tomato aspermy virus; amino acids; coat proteins; genes; host range; leaves; open reading frames; ornamental plants; sequence analysis; viruses; Iran; Middle East
Abstract:
... Three isolates of Tomato aspermy virus (TAV) were identified from two ornamental plants, Petunia hybrida and Chrysanthemum morifolium, sampled in Kerman province in the southeastern region of Iran. The complete genome of one isolate (Ker.Mah.P) and three open reading frames (ORFs), encoding coat protein (CP), movement protein (MP) and 2b protein of the three isolates were sequenced. The three geno ...
DOI:
10.1007/s40858-017-0173-1

3. Comparative transmission of five viruses by Bemisia tabaci NW2 and MEAM1

Author:
Bruno R. De Marchi; Julio M. Marubayashi; Gabriel M. Favara; Valdir A. Yuki; Luís Fernando M. Watanabe; Leonardo F. Barbosa; Marcelo A. Pavan; Renate Krause-Sakate
Source:
Tropical plant pathology 2017 v.42 no.6 pp. 495-499
ISSN:
1983-2052
Subject:
Bean golden mosaic virus; Bemisia tabaci; Carlavirus; Crinivirus; Euphorbia yellow mosaic virus; cryptic species; indigenous species; invasive species; plant viruses; virus transmission; viruses; weeds; Brazil; East Asia
Abstract:
... Bemisia tabaci is one of the most serious agricultral pests worldwide, causing severe damage mainly by transmitting plant viruses. B. tabaci is currently classified as a cryptic species complex. Within the complex, the invasive Middle East-Asia Minor 1 (MEAM1) species is the prevalent one in Brazil. However, there are also two indigenous species, New World 1 (NW1) and New World 2 (NW2), which have ...
DOI:
10.1007/s40858-017-0186-9

4. Competitive and colony layer formation ability as key mechanisms by yeasts for the control Botryosphaeria dothidea fruit rot of mango

Author:
Daniel Terao; Kátia de Lima Nechet; Bernardo de Almeida Halfeld-Vieira
Source:
Tropical plant pathology 2017 v.42 no.6 pp. 451-457
ISSN:
1983-2052
Subject:
Botryosphaeria dothidea; Candida membranifaciens; Meyerozyma guilliermondii; bioassays; biological control; chitinase; electron microscopy; fungicides; mangoes; mechanism of action; nutrients; pathogens; plant rots; storage time; thiabendazole; toxins; volatile compounds; yeasts; Brazil
Abstract:
... Mango is an economically important fruit crop in Brazil and attacked by fungal diseases that require control. Currently, ensuring that fruit are free of pesticide residues before consumption is a key challenge in postharvest pathology. The fungus Botryosphaeria dothidea is the major pathogen and there is currently no efficient method for its control. This work aimed to evaluate the efficacy of yea ...
DOI:
10.1007/s40858-017-0183-z

5. Effect of Heterodera sacchari on growth and yield of selected upland NERICA rice in Nigeria

Author:
Leonard I. Akpheokhai; Abiodun O. Claudius-Cole
Source:
Tropical plant pathology 2017 v.42 no.6 pp. 431-442
ISSN:
1983-2052
Subject:
Heterodera; Oryza sativa; cultivars; cyst nematodes; eggs; field experimentation; grain yield; highlands; hybridization; inflorescences; juveniles; pathogens; plant growth; plant height; population density; rice; roots; seedlings; soil; sowing; tillers; Nigeria
Abstract:
... Pot and field trials were conducted in 2012 and 2013 cropping seasons in Nigeria to determine the damage of Heterodera sacchari on the growth and yield of upland New Rice for Africa (NERICA) derived from hybridisation of Oryza sativa and O. glaberrima. NERICA rice (NR) cultivars selected were NR1, NR2, NR3, NR8 and NR14. In screenhouse experiments, rice seedlings were inoculated with 2500, 5000 an ...
DOI:
10.1007/s40858-017-0176-y

6. Notes on powdery mildews (Erysiphales) in Thailand IV. Erysiphe species on Malvaceae, Menispermaceae, Moraceae, Nyctaginaceae, Polygonaceae, Solanaceae and Urticaceae

Author:
JamjanMeeboon; Susumu Takamatsu
Source:
Tropical plant pathology 2017 v.42 no.6 pp. 485-494
ISSN:
1983-2052
Subject:
Antigonon leptopus; Boehmeria; Cyclea; Erysiphe; Ficus; Hibiscus; Mirabilis jalapa; Muehlenbeckia; Persicaria odorata; Physalis; Urena lobata; internal transcribed spacers; new combination; new species; powdery mildew; ribosomal DNA; Thailand
Abstract:
... This report provides morphological descriptions of powdery mildews found on Malvaceae, Menispermaceae, Moraceae, Nyctaginaceae, Polygonaceae, Solanaceae and Urticaceae and five specimens are identified with ITS rDNA sequences. These include a new species on Boehmeria siamensis (Urticaceae); Pseudoidium schmiedeknechtii on Schoutenia glomerata, Hibiscus floccosus and Urena lobata; Erysiphe kydiae-c ...
DOI:
10.1007/s40858-017-0156-2

7. Occurrence of a subgroup 16SrIII-J phytoplasma in non-symptomatic Brachiaria decumbens cultivated in a grazing area

Author:
Jaqueline M. S. Fugita; Thays B. C. Pereira; Ticyana C. Banzato; Elliot W. Kitajima; Eliezer R. Souto; Ivan P. Bedendo
Source:
Tropical plant pathology 2017 v.42 no.6 pp. 500-503
ISSN:
1983-2052
Subject:
Brachiaria; Phytoplasma; Urochloa decumbens; crops; grazing; pastures; phylogeny; polymerase chain reaction; restriction fragment length polymorphism; surveys; tropics; warm season grasses; weeds
Abstract:
... Brachiaria spp. are the most important and widely used warm season grasses for pasture, but are also important weeds for most economic crops in the tropics. During phytoplasma surveys in pasture fields, asymptomatic plants of Brachiaria decumbens were collected for inspection. Nested PCR detected phytoplasmas in more than 90% of sampled plants. Based on computer-simulated RFLP and a similarity coe ...
DOI:
10.1007/s40858-017-0174-0

8. Volatile organic compounds from cottonseed meal are toxic to Meloidogyne incognita

Author:
Liliana Estupiñan-López; Vicente P. Campos; Arinaldo P. Silva; Aline F. Barros; Márcio P. Pedroso; Júlio C. P. Silva; Willian C. Terra
Source:
Tropical plant pathology 2017 v.42 no.6 pp. 443-450
ISSN:
1983-2052
Subject:
Meloidogyne incognita; cottonseed; cottonseed meal; eggs; gas chromatography-mass spectrometry; juveniles; mortality; pathogenicity; plant parasitic nematodes; planting; reproduction; soil; tomatoes; toxicity; volatile organic compounds
Abstract:
... The toxic effects of volatile organic compounds (VOC) emitted from cottonseed meal to plant parasitic nematodes are almost unknown, despite their effectiveness when added to soil. We evaluated in this study the effect of second stage juveniles (J₂) of Meloidogyne incognita exposed to VOC from a mixture of soil and cottonseed meal in different concentrations held in cups. VOC trapped in cups sealed ...
DOI:
10.1007/s40858-017-0154-4

9. Cotton blue disease in central-west Brazil: Occurrence, vector (Aphis gossypii) control levels and cultivar reaction

Author:
Rafael Galbieri; Alberto S. Boldt; Leonardo B. Scoz; Sandra M. Rodrigues; Diego O. Rabel; Jean L. Belot; Maite Vaslin; Tatiane da Franca Silva; Leimi Kobayasti; Luiz Gonzaga Chitarra
Source:
Tropical plant pathology 2017 v.42 no.6 pp. 468-474
ISSN:
1983-2052
Subject:
Aphis gossypii; cotton; crop production; cultivars; disease control; disease incidence; genotype; sowing; viruses; Brazil
Abstract:
... Cotton blue disease (CBD) is the viral disease which poses the greatest threat to cotton in Brazil. One efficient way of controlling this disease is by using resistant cultivars. However, the recent emergence of an atypical form of CBD (ACBD), caused by a new virus genotype capable of overcoming these resistant cultivars, is causing concern. Thus, the aims of this study were to evaluate the distri ...
DOI:
10.1007/s40858-017-0165-1

10. Cowpea mild mottle virus (Carlavirus, Betaflexiviridae): a review

Author:
Larissa G. Zanardo; Claudine M. Carvalho
Source:
Tropical plant pathology 2017 v.42 no.6 pp. 417-430
ISSN:
1983-2052
Subject:
Bemisia tabaci; Cowpea mild mottle virus; Fabaceae; Lamiaceae; Solanaceae; beans; hosts; monitoring; necrosis; pathogens; soybeans; viruses; Ghana
Abstract:
... In this review we describe and discuss the biology and aspects of infection of a pathogen, the RNA virus Cowpea mild mottle virus (CPMMV), that emerged as a problem in soybean and is re-emerging in common bean. The review takes a global perspective but has an emphasis on Brazilian soybean in which CPMMV causes stem necrosis. Since its first description in Ghana in 1973, CPMMV has spread across the ...
DOI:
10.1007/s40858-017-0168-y

11. Occurrence of Asian grapevine leaf rust disease caused by Phakopsora meliosmae-myrianthae in Mexico

Author:
Santos G. Leyva-Mir; Cristina García-Reyes; Alma R. Solano-Báez; Moisés Camacho-Tapia; Mayra T. García-Ruíz; Juan M. Tovar-Pedraza
Source:
Tropical plant pathology 2017 v.42 no.6 pp. 504-506
ISSN:
1983-2052
Subject:
Phakopsora; Vitis; leaf rust; leaves; ribosomal DNA; Mexico
Abstract:
... During the falls of 2015 and 2016, rust symptoms were observed on grapevine leaves in a backyard garden located in Tlaxiaco, Oaxaca, Mexico. Based on morphology, analysis of the variable D1/D2 region of the large subunit rDNA, and the fulfilment of Koch’s postulates on grapevine leaves, the causal agent was identified as Phakopsora meliosmae-myrianthae. This is the first report of Asian grapevine ...
DOI:
10.1007/s40858-017-0157-1