Morphological and molecular characterization of powdery mildew on sunflower (Helianthus annuus L.), alternate hosts and weeds commonly found in and around sunflower fields in India

Sujatha, M.; Soni, Prashant Kumar; Gonela, Suresh Kumar

doi:10.1007/s12600-016-0531-4

Cited by 15 publications

(3 citation statements)

References 18 publications

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“…The effect of lengthening the presence time of hosts is comparable with lengthening the growing season for plants, which would promote severe powdery mildew infections [97]. The conclusion is also in line with Mulpuri et al [98], who state that continuous cultivation of crop, and even the existence of collateral hosts and weeds, will lead to increased inoculum load of PMs. It is suggested that more comprehensive knowledge of the PMs with a wide host range would be beneficial to management of crop diseases, e.g., awareness of the potential host associations of E. ipomoeae, E. betae, and E. neolycopersici may bring about improvements in cultural practices to reduce the inoculum.…”

Section: Perennation Of Powdery Mildews In the Subtropics And The Imp...supporting

confidence: 70%

New Records of Powdery Mildews from Taiwan: Erysiphe ipomoeae comb. nov., E. aff. betae on Buckwheat, and E. neolycopersici comb. nov. on Cardiospermum halicacabum

Hsiao¹,

Ariyawansa

Hsu³

et al. 2022

Diversity

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Erysiphe is the largest genus of powdery mildews (PMs), a group of obligate plant pathogenic fungi. Exploration of biodiversity generally relies on regional surveys and our aim is to investigate the PMs in Taiwan. Collections of the fungi on five plant species around agricultural environments were subjected to morphological and molecular characterization, using both internal transcribed spacer (ITS) and β-tubulin gene (TUB2) regions for the phylogenetic analyses. Erysipheipomoeae comb. nov., a species able to infect Ipomoea obscura and I. aquatica demonstrated by pathogenicity tests, has been neotypified. The two buckwheat species, Fagopyrum esculentum and F. tataricum, are found to be hosts of E. aff. betae. These results suggest that hosts in some plant families can be infected by more than one Erysiphe pathogen, e.g., Convolvulaceae by E. ipomoeae and E. convolvuli and Polygonaceae by E. polygoni and E. aff. betae, respectively. In addition, phylogenetic analyses of PMs on Cardiospermum halicacabum and tomato belonging to the E. aquilegiae complex are allocated under E. neolycopersici comb. nov. This extends the potential host range of E. aquilegiae complex to the plant family Sapindaceae. We conclude that awareness of the host associations of PMs can potentially benefit crop disease management.

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Section: Perennation Of Powdery Mildews In the Subtropics And The Imp...supporting

confidence: 70%

New Records of Powdery Mildews from Taiwan: Erysiphe ipomoeae comb. nov., E. aff. betae on Buckwheat, and E. neolycopersici comb. nov. on Cardiospermum halicacabum

Hsiao¹,

Ariyawansa

Hsu³

et al. 2022

Diversity

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“…Mulberry and Indian rose wood were infected by the genus Phyllactinia which was also reported by [15] and [12], respectively. Powdery mildew pathogens infecting butternut squash, asthma plant, bitter gourd, bottle gourd, sesame and common cockle bur were infected with Podospheara genera which are in agreement with the findings of several workers [9,16,8,17,18,13].…”

Section: Morphological Characterization Of Powdery Mildew Pathogensupporting

confidence: 90%

Identification and Morph-metric Characterization of Powdery Mildew Infecting Diverse Host Plants of Southern Gujarat, India

Nayak,

John,

Prasanna

et al. 2023

IJPSS

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Powdery mildews are obligate biotrophic fungal pathogens that are responsible for disease on a wide range of host plants with white powdery patches on plant parts. An exhaustive survey in the Navsari region of south Gujarat was carried out to identify white powdery/floury circular to irregular spots, specks or patches either on the upper surface or lower surface or both the surface of the leaves. These powdery mildew symptoms were observed on leaves, stems and pods/fruits on 39 hosts of 22 families. For precise identification of the pathogen the morphological characteristics included mycelium, length and breadth of conidia, conidiophores, appressorium, conidial germ tubes foot cell and fibrosin bodies. Majorly the genera like Erysiphe, Golovinomyces, Leveillula, Oidium, Phyllactinia, Podosphaera, Micro-oidium and Sphaerotheca were found on different hosts in this region. The maximum number of hosts were infected by the genus Oidium followed by Erysiphe. The highest percent disease incidence was observed on the asthma plant, black gram, green gram and wild poinsettia between 75-100 per cent out of all the hosts.

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“…Algunos ejemplos de arvenses de importancia agrícola son: C. album (Cerkauskas et al, 2011), Helianthus annuus (Mulpuri et al, 2016), Solanum elaeagnifolium (Félix-Gastélum et al, 2017) Arvenses como Amaranthus spp., C. album, Malva parviflora, P. oleraceae y S. oleraceus, presentes en los cultivos de chile, también se reportan como hospedantes de virus (Atiri, 1984;Sacristán et al, 2004;Tahir et al, 2015). Bidens pilosa es una planta hospedante de muchos patógenos como el nemátodo Meloidogyne spp.…”

Section: Las Especies Con Estatus Exóticas Naturalizadas Fueronunclassified

Arvenses Nativas Y Exóticas en Parcelas De Chile Jalapeño

et al. 2022

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Las arvenses juegan un papel importante en el desarrollo y producción de los cultivos al competir por agua, nutrientes del suelo y luz, además de ser reservorio de patógenos e insectos plaga. El objetivo de este estudio fue identificar plantas arvenses nativas y exóticas dentro de parcelas de chile Jalapeño (Capsicum annuum L.) para diseñar futuras estrategias de manejo. Durante mayo a julio de 2019 a 2021 se realizaron recolectas de malezas en los municipios de Camargo y Delicias, Chihuahua, México, en los cuales se seleccionaron al azar 20 parcelas de 2 × 2 m por municipio y año, en puntos con presencia de malezas en una superficie de 4 ha. Las arvenses encontradas se agruparon en 54 especies, pertenecientes a 15 familias, de las cuales Poaceae y Asteraceae tuvieron mayor riqueza con 14 y 11 especies, respectivamente. El total de especies nativas encontradas fue de 34, mientras que hubo 15 especies con estatus exóticas naturalizadas: Arundo donax L., Cenchrus ciliaris L., Chenopodium album L., Cynodon dactylon (L.) Pers., Cyperus esculentus L., Echinochloa colona (L.) Link, Eragrostis cilianensis (All.) Vignolo ex Janchen, Ricinus communis L., Sonchus oleraceus L., Sorghum halepense (L.) y Tribulus terrestris L.; del total, seis especies correspondieron a arvenses nativas de México sin registro en CONABIO para el estado de Chihuahua, México: Acalypha neomexicana Muell.-Arg., A. setosa A. Rich., Flaveria trinervia (Spreng.) C. Mohr, Ipomoea batatas (L.) Lam., Portulaca oleracea L. y Solanum fructo-tecto Cav. Entre las arvenses más difíciles de controlar en las parcelas de chile se encontraron Amaranthus spp., Cenchrus echinatus L., Convolvulus arvensis L., Cuscuta indecora Choisy, Cuscuta umbellata Kunth., Cyperus esculentus L., Flaveria trinervia (Spreng.) C. Mohr y Setaria adhaerens (Forssk.) Chiov.

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Morphological and molecular characterization of powdery mildew on sunflower (Helianthus annuus L.), alternate hosts and weeds commonly found in and around sunflower fields in India

Cited by 15 publications

References 18 publications

New Records of Powdery Mildews from Taiwan: Erysiphe ipomoeae comb. nov., E. aff. betae on Buckwheat, and E. neolycopersici comb. nov. on Cardiospermum halicacabum

New Records of Powdery Mildews from Taiwan: Erysiphe ipomoeae comb. nov., E. aff. betae on Buckwheat, and E. neolycopersici comb. nov. on Cardiospermum halicacabum

Identification and Morph-metric Characterization of Powdery Mildew Infecting Diverse Host Plants of Southern Gujarat, India

Arvenses Nativas Y Exóticas en Parcelas De Chile Jalapeño

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