Tropical Plant Pathology

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Mycelial growth, starch degradation ability and aggressiveness of Moniliophthora perniciosa isolates towards cacao
Tropical Plant Pathology - Tập 42 - Trang 21-27 - 2016
Francisca F. J. Santos, José L. Pires, Uilson V. Lopes, Louise A. S. de Brito, Lindolfo P. dos Santos Filho, Livia S. L. Lemos, Karina P. Gramacho
The variability of Moniliophthora perniciosa, the causal agent of witches’ broom disease of cacao (Theobroma cacao), was assessed based on measures of (i) mycelial growth rates (MGR), (ii) area of starch degradation (ASD) and (iii) aggressiveness towards susceptible and resistant clones. Ninety-six isolates were obtained from vegetative and flower cushion brooms from five resistant clones and one ... hiện toàn bộ
ToxA, a significant virulence factor involved in wheat spot blotch disease, exists in the Mexican population of Bipolaris sorokiniana
Tropical Plant Pathology - Tập 46 - Trang 201-206 - 2020
Lei Wu, Xinyao He, Nerida Lozano, Xu Zhang, Pawan K. Singh
Spot blotch, caused by the pathogen Bipolaris sorokiniana, is an important foliar disease of wheat in warm and humid regions worldwide. The fungal virulence factor ToxA interacts with Tsn1 in wheat and leads to a susceptible reaction. ToxA has been found in B. sorokiniana populations of Australia, the USA, and India, and here we report its occurrence in Mexico, based on analysis of a collection of... hiện toàn bộ
Common bacterial blight of beans: an integrated approach to disease management in Brazil
Tropical Plant Pathology - Tập 47 - Trang 457-469 - 2022
Tadeu Antônio Fernandes da Silva Júnior, Daniele Maria do Nascimento, João César da Silva, José Marcelo Soman, Ricardo Marcelo Gonçalves, Antonio Carlos Maringoni
Common bacterial blight (CBB), caused by Xanthomonas phaseoli pv. phaseoli and Xanthomonas citri pv. fuscans, is the main bacterial disease of common bean (Phaseolus vulgaris) in Brazil and in the world. The disease affects the entire aerial part of the plants, especially in conditions of high temperature and humidity. Yield losses of up to 70% have been recorded in susceptible bean cultivars. The... hiện toàn bộ
Optimal conditions for conidial germination and infection of European pear leaves by Diplocarpon mespili
Tropical Plant Pathology - Tập 41 - Trang 78-83 - 2016
Claudia C. Nunes, Silvio A. M. Alves, Amauri Bogo, Ricardo T. Casa, Ana B. C. Czermainski, Fabio N. da Silva
The epidemiology of Entomosporium leaf spot (ELS) affecting European pear is poorly understood, which limits the development of an effective management strategy. In vitro assays were conducted to study the effect of temperature levels (5, 10, 15, 20, 25, and 30 °C) on Diplocarpon mespili conidial germination evaluated at different incubation times (0, 2, 4, 6, 8, 12, 24, and 48 h). Inoculation exp... hiện toàn bộ
Novel Pathotypes of Elsinoë australis Associated with Citrus australasica and Simmondsia chinensis in Australia
Tropical Plant Pathology - Tập 40 - Trang 26-34 - 2015
Andrew K. Miles, Yu Pei Tan, Roger G. Shivas, André Drenth
Molecular phylogenetic analysis, morphology and pathogenicity to citrus fruit were used to study two isolates of Elsinoë australis associated with scab-like symptoms on a fruit of Citrus australasica (finger lime) and Simmondsia chinensis (jojoba) in Australia. In addition to being associated with finger lime, the isolate from finger lime could cause scab symptoms on C. × aurantium cv. Murcott tan... hiện toàn bộ
Mild strain cross-protection in cacao: evaluation of symptom suppression in three progenies exposed to natural spread of the New Juabeng strain of the Cacao swollen shoot Togo B virus (CSSTBV)
Tropical Plant Pathology -
Owusu Domfeh, G. A. Ameyaw, Ebenezer Antwi Gyamera
Overview of citrus huanglongbing spread and management strategies in Brazil
Tropical Plant Pathology - Tập 45 - Trang 251-264 - 2020
Renato Beozzo Bassanezi, Sílvio Aparecido Lopes, Marcelo Pedreira de Miranda, Nelson Arno Wulff, Haroldo Xavier Linhares Volpe, Antonio Juliano Ayres
Huanglongbing (HLB) has been a serious threat to the citrus industry worldwide. After its first report in São Paulo State, the main citrus production area in Brazil, the disease spread to the States of Minas Gerais, Paraná and Mato Grosso do Sul. Attempts to cure plants or remiss disease symptoms and damages have been evaluated and showed to be inefficient and nonviable. The development of resista... hiện toàn bộ
Seasonal dynamics in leaf viromes of grapevines depicting leafroll syndrome under tropical condition
Tropical Plant Pathology - Tập 47 - Trang 635-645 - 2022
V. Kavi Sidharthan, Amitha Mithra Sevanthi, Sureshkumar Venkadesan, Damini Diksha, V. K. Baranwal
Among the grapevine viral diseases, grapevine leafroll disease (GLD) complex is widespread and causes huge economic losses worldwide. The disease is incited by several viruses referred as grapevine leafroll-associated viruses (GLRaVs), either individually or in combinations. Conventional ELISA and real-time PCR assays have shown the seasonal fluctuation in GLRaV titers in temperate and sub-tropica... hiện toàn bộ
Prevalence and levels of deoxynivalenol and zearalenone in commercial barley and wheat grain produced in Southern Brazil: an eight-year (2008 to 2015) summary
Tropical Plant Pathology - Tập 42 - Trang 146-152 - 2017
Carlos Augusto Mallmann, Paulo Dilkin, Adriano Olnei Mallmann, Maurício Schneider Oliveira, Zoila Naeko Coloma Adaniya, Camila Tonini
Fusarium head blight (FHB), caused mainly by Fusarium graminearum, is one of the most important diseases of barley and wheat in Brazil. The disease causes yield losses and contaminates grain with mycotoxins produced by the fungus, mainly deoxynivalenol (DON) and zearalenone (ZEA). The objective of this study was to summarize the results of 16,487 analyses of DON and ZEA in barley and wheat commerc... hiện toàn bộ
Integrated approach for managing Fusarium wilt of chickpea using Azadirachta indica leaf extract, Trichoderma harzianum and Bavistin
Tropical Plant Pathology -
Arshi Jamil, Shabbir Ashraf
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