Factors affecting sporulation of Pestalotiopsis disseminata causing grey blight disease of Persea bombycina Kost., the primary food plant of muga silkworm

Das, Ranjana; Chutia, Mahananda; Das, Kaushik; Jha, Dhruva Kumar

doi:10.1016/j.cropro.2010.05.012

Cited by 35 publications

(32 citation statements)

References 16 publications

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“…It is an important plant pathogenic genus (Yasuda et al 2003;Das et al 2010;Maharachchikumbura et al 2011) with more than 235 species, traditionally named according to their host associations (Guba 1961;Steyaert 1949;Venkatasubbaiah et al 1991;Kohlmeyer and Kohlmeyer 2001). Following the discovery of taxol, the multimillion dollar anti-cancer drug, from P. microspora (Speg.)…”

Section: Introductionmentioning

confidence: 99%

A multi-locus backbone tree for Pestalotiopsis, with a polyphasic characterization of 14 new species

et al. 2012

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Pestalotiopsis is a taxonomically confused, pathogenic and chemically creative genus requiring a critical reexamination using a multi-gene phylogeny based on ex-type and ex-epitype cultures. In this study 40 isolates of Pestalotiopsis, comprised of 28 strains collected from living and dead plant material of various host plants from China were studied by means of morphology and analysis of ITS, β-tubulin and tef1 gene sequence data. Based on molecular and morphological data we describe 14 new species (Pestalotiopsis asiatica, P. chinensis, P. chrysea, P. clavata, P. diversiseta, P. ellipsospora, P. inflexa, P. intermedia, P. linearis, P. rosea, P. saprophyta, P. umberspora, P. unicolor and P. verruculosa) and three species are epitypified (P. adusta, P. clavispora and P. foedans). Of the 10 gene regions (ACT, β-tubulin, CAL, GPDH, GS, ITS, LSU, RPB 1, SSU and tef1) utilized to resolve cryptic Pestalotiopsis species, ITS, β-tubulin and tef1 proved to be the better markers. The other gene regions were less useful due to poor success in PCR amplification and/or in their ability to resolve species boundaries. As a single gene tef1 met the requirements for an ideal candidate and functions well for species delimitation due to its better species resolution and PCR success. Although β-tubulin showed fairly good differences among species, a combination of ITS, β-tubulin and tef1 gene data gave the best resolution as compared to single gene analysis. This work provides a backbone tree for 22 ex-type/epitypified species of Pestalotiopsis and can be used in future studies of the genus.

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Section: Introductionmentioning

confidence: 99%

A multi-locus backbone tree for Pestalotiopsis, with a polyphasic characterization of 14 new species

et al. 2012

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“…The dominance of Cladosporium cladosporioides and Pestalopsis disseminata in the air were justified by their airborne nature. Pestalopsis disseminata is a ubiquitous fungus in outdoor air environment with maximum spore count in summer (Das et al, 2010). A linear relationship between the temperature, rainfall, relative humidity and population of P. disseminata can be observed from the CCA plot (Fig.…”

Section: Phylloplanementioning

confidence: 90%

“…The phyllosphere of Som also showed humidity. It was earlier reported that a temperature of 28 ± 5 °C and RH of 70 -80% favors the dissemination of P. disseminata (Das et al, 2010). Few works on Som plant also describes the Bhodia and Aheruwa generation were highly prone to grey blight (CMER&TI, 2007).…”

Section: Phylloplanementioning

confidence: 99%

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A comprehensive mycofloral diversity of pedosphere, phyllosphere and aerosphere of Som. (Persea bombycina Kost.)

Mk¹,

Mishra²,

S³

2018

Preprint

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Sericulture is an important cottage industry of Assam producing natural silk of both Mulberry and Non-Mulberry silk. The sericulture industry is closely associated with the Assamese traditions and rituals. In non-mulberry silk, Muga silkworm which is endemic to North-East India only produce exquisite silks of golden color. Rearing of Muga silkworm is one of the important aspects to producing silk of high quality. The quality of the primary host plant i.e. Som (Persea bombycina Kost.) greatly affects the quality of cocoon and silk produced by these industries. Therefore, planting and growing a disease-free plant has its own importance in sericulture. However, Som is very susceptible to different foliar diseases caused by fungi, which can reduce the yield of leaf from 13.8 -41.6% annually. Therefore, a comprehensive mycofloral study of the host plant is important to forecast the future diseases and design different disease management procedures. This study has been done for a period of two years from 2014 -2016 in Goalpara district of Assam and overall mycoflora of pedosphere (rhizosphere and nonrhizosphere), phyllosphere and aerosphere were identified and correlated with the seasonal variation. The rhizosphere, air, and phylloplane was dominated by Rhizopus stolonifer (22.13%; 15.08; 24.01) while Aspergillus niger (12.63%) was the dominant flora of non-rhizosphere. Seasonal variation was found to play an important role in shaping the mycofloral community structure in soil and phyllosphere. In summer, soil was majorly dominated by Aspergillus niger, Aspergillus fumigatus, and Curvularia lunata while Rhizopus stolonifer, Aspergillus clavatus, Penicillium chrysogenum dominated the winter soil. In phyllosphere, the Chatuwa and Jaruwa, the winter generations were mainly dominated by Rhizopus stolonifer. While as the environmental temperature gradually increased with relative humidity in Aheruwa, Bhodia, Kotia and Jethuwa generation there was a shift in diversity with a gradual increase in occurance of Alternaria alternata, Aspergillus niger, and Aspergillus flavus. Pestaloptiopsis disseminata one of the major pathogen of Som was found highest in aerosphere followed by phyllosphere and it was only dominated in Aheruwa generation. It was found that occurrence of P. disseminata were high when the temperature ranges between 25° -28° with 70 -80% of relative humidity. This study provides a deep insight into the fungal diversity of host plant Som with respect to pedosphere, aerosphere, and phyllosphere and this knowledge can be used to better select the plantation area and design different disease management strategies to sustain and proliferate the industry for socio-economic development and to conserve its cultural essence.

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“…Species of Pestalotiopsis are common in tropical and temperate ecosystems (Bate-Smith a nd Metcalfe 1957) and may cause plant disease (Das et al 2010), are often isolated as endophytes (Watanabe et al, 2010), or occur as saprobes (Liu et al 2008). The genus has received much attention from the scientific com munity.…”

Section: Discussionmentioning

confidence: 99%

In-vitro Evaluation of Some Selected Fungicides against Pestalotio psis clavispora and Pseudocochliobolus eragrostidis Isolated from Vitellaria paradoxaSeedlings.

Esiegbuya¹,

Oruade-Dimaro²,

Odigie³

et al. 2014

IOSRJAVS

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Factors affecting sporulation of Pestalotiopsis disseminata causing grey blight disease of Persea bombycina Kost., the primary food plant of muga silkworm

Cited by 35 publications

References 16 publications

A multi-locus backbone tree for Pestalotiopsis, with a polyphasic characterization of 14 new species

A multi-locus backbone tree for Pestalotiopsis, with a polyphasic characterization of 14 new species

A comprehensive mycofloral diversity of pedosphere, phyllosphere and aerosphere of Som. (Persea bombycina Kost.)

In-vitro Evaluation of Some Selected Fungicides against Pestalotio psis clavispora and Pseudocochliobolus eragrostidis Isolated from Vitellaria paradoxaSeedlings.

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