Volume 7 - Issue 2


Article Number 1
Title

X-ray imaging for detecting lack mould rot of sapota (Achras sapota) fruit

Authors

Gadgile D, Lande BR, Dhabde AS, Kamble SP

Received 28 March 2017
Accepted 29 May 2017
Published Online 21 July 2017
Corresponding Author D. Gadgile
Abstract

The detection of black mould rot infection (Aspergillus niger) in post-harvest sapota fruit was demonstrated by a X-ray imaging technique carried out six, seven and eight days post inoculation. It is suggested that X-ray imaging technology for detection of fungal infection may be useful as an imaging-based sapota sorting system.

Keywords Aspergillus niger – post-harvest disease – sapota – X-ray scanning
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Article Number 2
Title

Potential effect of Piriformospora indica on plant growth and essential oil yield in Mentha piperita

Authors

Dolatabad HK, Goltapeh EM, Safari M, Golafaie TP

Received 27 January 2017
Accepted 09 March 2017
Published Online 21 July 2017
Corresponding Author H.K. Dolatabad
Abstract

Pot culture experiments were used to evaluate the inoculation of peppermint plants (Mentha piperita) with Piriformospora indica. The effect of inoculation was observed in growth, yield, and composition of the essential oil of peppermint. Hydro distillation was used to extract oil from the dry matter of the shoot. Subsequently, GC/MS was used to determine their composition. The largest plant heights, dry shoot and root weights, and numbers of nodes were observed in pots that were inoculated with P. indica. The highest essential oil yield was obtained with P. indica-inoculated plants. GC and GC/MS revealed that P. indica enhanced menthol levels. T-test analysis showed that differences between treatment with P. indica inoculation and control were significant in root length, shoot dry weight, number of nodes and essential oil yield

Keywords Labiatae – peppermint – symbiosis
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Article Number 3
Title

First record of Pseudoidium sp. on Heterophragma quadriloculare in India

Authors

Thite SV, Kore BA

Received 15 April 2017
Accepted 25 July 2017
Published Online 20 September 2017
Corresponding Author B.A.Kore
Abstract

In September 2013, severe powdery mildew symptoms were observed on the leaves of Heterophragma quadriloculare (Bignoniaceae). Based on morphological characters the pathogen was identified as Pseudoidium sp. This is the first record of Pseudoidium sp. on H. quadriloculare in India. 

Keywords Bignoniaceae – Erysiphales – Erysiphe – Heterophragma quadriloculare – Pseudoidium
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Article Number 4
Title

Checklist of rust fungi from Ketmen ridge (southeast of Kazakhstan)

Authors

Rakhimova YV, Yermekova BD, Kyzmetova LA

Received 26 June 2017
Accepted 16 August 2017
Published Online 20 September 2017
Corresponding Author Y. Rakhimova
Abstract

The Ketmen ridge has 84 species belonging to class Urediniomycetes. The class is represented by 11 genera from 6 families. The largest genera are Puccinia (48 species) and Uromyces (12 species). The following species are widely distributed in the territory: Gymnosporangium fusisporum on Cotoneaster spp., Puccinia chrysanthemi on Artemisia spp. and Puccinia menthae on Mentha spp. Rust fungi attack 134 species of host plants.

Keywords aecia – host plants – mycobiota – telia – uredinia
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Article Number 5
Title

First report of Hyaloperonospora brassicae causing downy mildew on wild radish in Mexico

Authors

Robles-Yerena L, Leyva-Mir SG, Carreón-Santiago IC, Cuevas-Ojeda J, Camacho-Tapia M, Tovar-Pedraza JM

Received 24 July 2017
Accepted 07 August 2017
Published Online 20 September 2017
Corresponding Author J. M. Tovar-Pedraza
Abstract

During August and September 2016, symptoms and signs of downy mildew were observed on stems and inflorescences of wild radish (Raphanus raphanistrum) plants in field plots in Cuapiaxtla, Tlaxcala, Mexico. Based on morphological characteristics, analysis of rDNA-ITS sequences, and pathogenicity tests on wild radish plants, the causal agent was identified as Hyaloperonospora brassicae. This is the first report of H. brassicae causing downy mildew on R. raphanistrum in Mexico.

Keywords Raphanus raphanistrum – morphology – pathogenicity – sequence analysis
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Article Number 6
Title

Euoidium vernoniicola, a new report for Pakistan

Authors

Afshan NS, Khanum S, Fiaz M, Khalid AN, Niazi AR

Received 14 March 2017
Accepted 26 September 2017
Published Online 12 October 2017
Corresponding Author N.S. Afshan
Abstract

Euoidium vernoniicola is recorded for the first time from Pakistan. It is also the first time that the genus Euoidium has been reported from Pakistan. Nine genera of powdery mildews are now known for Pakistan.

Keywords Erysiphales – pathogenic fungi – Vernonia elaeagnifolia
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Article Number 7
Title

Molecular and phylogenetic studies of Colletotrichum truncatum associated with soybean anthracnose in India

Authors

Marmat N, Ansari MM, Chand S, Ratnaparkhe MB

Received 22 August 2017
Accepted 04 November 2017
Published Online 21 November 2017
Corresponding Author M.B. Ratnaparkhe
Abstract

Colletotrichum species are destructive pathogens of soybean causing anthracnose disease in pre- and post-harvest stages. Colletotrichum truncatum, which is associated with soybean anthracnose, was isolated from four geographical locations of India. Isolates were identified and grouped on the basis of rDNA internal transcribed spacer (ITS1 and ITS2) sequences. Multiple sequence alignment showed that one isolate had nucleotide variation at two positions, indicating genetic variability within C. truncatum. A maximum likelihood phylogenetic tree constructed for all the isolates indicated high sequence similarity of C. truncatum isolates. This study identified new C. truncatum isolate associated with soybean anthracnose which is different from the previously reported C. truncatum isolates

Keywords genetic variability – maximum-likelihood – phylogenetic – ribosomal ITS region – sequencing
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Article Number 8
Title

First record of Phaeoseptoria and new species records on Carex for Turkey

Authors

Erdoğdu M, Özbek MU

Received 13 July 2017
Accepted 26 September 2017
Published Online 23 November 2017
Corresponding Author M. Erdoğdu
Abstract

Phaeoseptoria caricicola and Septoria caricis, which have been recently discovered on living leaves of Carex divulsa in Turkey, are new records for the country. Phaeoseptoria is recorded as a new genus for Turkey. Distinguishing morphological characters are described and illustrated for each species

Keywords microfungi – Phaeoseptoria caricicola – Septoria caricis
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Article Number 9
Title

First confirmed report of Cerotelium fici causing leaf rust on Ficus carica in Mexico

Authors

Solano-Báez AR, Jiménez-Jiménez B, Camacho-Tapia M, Leyva-Mir SG, Nieto-López EH, Tovar-Pedraza JM

Received 10 October 2017
Accepted 05 November 2017
Published Online 23 November 2017
Corresponding Author J. M. Tovar-Pedraza
Abstract

During August to October 2015 and 2016, severe symptoms of rust were observed on fig leaves in orchards, nurseries, and backyard gardens located in Morelos, Puebla, State of Mexico, and Mexico City, Mexico. Based on morphology and analysis of nuclear large subunit rDNA, the fungus was identified as Cerotelium fici. This is the first confirmed report of C. fici causing fig leaf rust in Mexico

Keywords Cerotelium fici – Ficus carica – morphology – sequence analysis
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Article Number 10
Title

Karnal bunt of wheat in India and its management: a review

Authors

Sharma A, Sharma P, Dixit A, Tyagi R

Received 23 September 2017
Accepted 08 October 2017
Published Online 28 November 2017
Corresponding Author A. Sharma
Abstract

Wheat has been a source of staple food to mankind since ancient times. Decreased production of wheat in the major wheat growing countries may be attributed to prevalence of Karnal bunt disease. The major impact of Karnal bunt is yield reduction and a decrease in quality of grains by imparting a fishy odour and taste to the wheat. The disease has gained significant importance due to the fact that it is prevalent only in a few countries around the world. The pathogen Tilletia indica is soil and seed borne which pose a serious quarantine problem and thus interferes with wheat trade. Early recognition of the pathogen is a critical step in analysis and its management. The present review highlights a brief outline of the pathogen, symptoms and various methods like seed treatment, crop rotation, fungicide application etc. for the control of Karnal bunt disease

Keywords disease – fungicide – pathogen – Tilletia indica – quarantine
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Article Number 11
Title

First report of Colletotrichum falcatum causing anthracnose in cardamom

Authors

Bhuvaneswari S, Sripriya N, Srinithi A, Udaya Prakash NK

Received 02 October 2017
Accepted 22 November 2017
Published Online 12 December 2017
Corresponding Author N.K. Udaya Prakash
Abstract

The capsules of cardamom (Elettaria cardamomum) plants cultivated in Tamil Nadu and Kerala, India were found with black spots during June to August of 2015 and 2016. Nearly 40% crop loss was reported by farmers. The symptoms were characterized by watery, mucilaginous, yellow patches developing into sunken regions with black spots of 1–2 mm diam. On drying, the spots resembled the symptoms of anthracnose. These small spots coalesced to form lesions measuring 4–7 mm in length. The causal agent was identified as Collectotrichum falcatum. In culture, the pathogen developed as a greyish colony with sparse aerial mycelium and setae, possessing falcate, fusiform conidia with obtuse apices, and brown appressoria. Inoculating the isolated fungus onto healthy capsules resulted in recurrence of the disease symptoms after 4 days. The fungus was re-isolated and confirmed as C. falcatum. Previous reports of anthracnose in cardamom attribute the disease to C. gloeosporioides. This is the first report of C. falcatum causing anthracnose on cardamom. 

Keywords anthracnose – cardamom – Colletotrichum falcatum – Elettaria cardamomum – pathogenicity
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Article Number 12
Title

Biocontrol of powdery mildew of grapes using culture filtrate and biomass of fungal isolates

Authors

Singh PN, Singh SK, Tetali SP, Lagashetti AC

Received 21 June 2017
Accepted 14 November 2017
Published Online 12 December 2017
Corresponding Author P.N. Singh
Abstract

Grapevine (Vitis spp.) is an important cash crop in India and powdery mildew is a common disease which causes severe loss in yield and quality of grapes. The disease is caused by the fungus Erysiphe necator (family Erysiphaceae). Cell-free culture filtrate and biomass of selected fungal isolates (Ampelomyces quisqualis, Trichoderma harzianum and Saccharomyces cerevisiae) were found to be effective for the prevention and control of powdery mildew of grape. The results of this study suggest that the tested fungal isolates have potential to be used as an alternative to chemical fungicides for the control of grape powdery mildew. 

Keywords bio-control agents – disease severity – grapes – powdery
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Plant Pathology & Quarantine Online publishes reviews, research articles, methodology papers, taxonomic works such as monographs, and checklists which are relevant toplant pathology and quarantine. The official journal language is English.

 

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