First report of Macrophomina root rot (<i>Macrophomina phaseolina</i>) on medicinal coleus (<i>Coleus forskohlii</i>) in India

Kamalakannan, A.; Mohan, L.; Valluvaparidasan, V.; Mareeswari, P.; Karuppiah, R.

doi:10.1111/j.1365-3059.2005.01302.x

Cited by 20 publications

(8 citation statements)

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“…For whole plant infection assay, infected soil treatment according to Kamalkannan et al (2006) with modifications was utilized. For infected soil preparation, 100 ml of microsclerotial suspension of M. phaseolina in sterile water (1 × 10 6 microsclerotia/ml) was added to 100 g of autoclaved sand-maize medium (19:1 sand and ground maize grain) and allowed to grow for 2 weeks in dark at 28°C.…”

Section: Methodsmentioning

confidence: 99%

Overexpression of a New Osmotin-Like Protein Gene (SindOLP) Confers Tolerance against Biotic and Abiotic Stresses in Sesame

2017

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Osmotin-like proteins (OLPs), of PR-5 family, mediate defense against abiotic, and biotic stresses in plants. Overexpression in sesame of an OLP gene (SindOLP), enhanced tolerance against drought, salinity, oxidative stress, and the charcoal rot pathogen. SindOLP was expressed in all parts and localized to the cytosol. The transgenic plants recovered after prolonged drought and salinity stress, showing less electrolyte leakage, more water content, longer roots, and smaller stomatal aperture compared to control plants. There was an increase in osmolytes, ROS-scavenging enzymes, chlorophyll content, proline, secondary metabolites, and reduced lipid peroxidation in the transgenic sesame under multiple stresses. The OLP gene imparted increased tolerance through the increased expression of three genes coding for ROS scavenging enzymes and five defense-related marker genes functioning in the JA/ET and SA pathways, namely Si-Apetala2, Si-Ethylene-responsive factor, Si-Defensin, Si-Chitinase, and Si-Thaumatin-like protein were monitored. The transgenic lines showed greater survival under different stresses compared to control through the integrated activation of multiple components of the defense signaling cascade. This is the first report of transgenic sesame and first of any study done on defense-related genes in sesame. This is also the first attempt at understanding the molecular mechanism underlying multi-stress tolerance imparted by an OLP.

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Section: Methodsmentioning

confidence: 99%

Overexpression of a New Osmotin-Like Protein Gene (SindOLP) Confers Tolerance against Biotic and Abiotic Stresses in Sesame

2017

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“…The present study highlighted the causal pathogen of leaf blight on spider lilies (C. asiaticum and H. littoralis) in Malaysia was proved as M. phaseolina. M. phaseolina is a well-known plant pathogen causing several important diseases such as charcoal rot [33,34], crown rot [35], Ashy stem blight [36], wilt [37], leaf blight [38], and stem, collar, and root rot [39][40][41]. This seed-borne or soil-borne pathogen was responsible for causing diseases on numerous hosts namely sunflower, strawberry, soybean, watermelon, guava, and mungbean [42].…”

Section: Discussionmentioning

confidence: 99%

Identification and Characterization of Macrophomina phaseolina Causing Leaf Blight on White Spider Lilies (Crinum asiaticum and Hymenocallis littoralis) in Malaysia

et al. 2019

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Crinum asiaticum and Hymenocallis littoralis, commonly known as spider lilies are bulbous perennial and herbaceous plants that widely planted in Malaysia as ornamental. During 2015-2016, symptom of leaf blight was noticed on the hosts from several locations in Penang. The symptom appeared as irregular brown to reddish lesions surrounded by yellow halos. As the disease progressed, the infected leaves became blighted, dried, and fell off with the presence of black microsclerotia and pycnidia on the lesions parts. The present study was conducted to investigate the causal pathogen of leaf blight on C. asiaticum and H. littoralis. Based on morphological characteristics and DNA sequences of internal transcribed spacer (ITS) region and translation elongation factor 1-alpha (TEF1-a) gene, the causal pathogen was identified as Macrophomina phaseolina. Phylogenetic analysis of combined dataset of ITS and TEF1-a grouped the isolates studied with other isolates of M. phaseolina from GenBank. The grouping of the isolates was supported by 96% bootstrap value. Pathogenicity test proved the role of the fungus in causing leaf blight on both hosts. ARTICLE HISTORY

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“…Kamalakannan et al, (2006) reported Macrophomina phaseolina has also been isolated from the disease complex. Yellowing and drooping of the leaves, blackening of the stem, rotting of the roots and basal stem and peeling of stem bark and root epidermis is commonly observed.…”

Section: Root Rot and Wilt Diseasementioning

confidence: 99%

Comparative Efficiency of Biocontrol Agents in the Management of Root Borne Diseases of Coleus (Coleus forskohlii (Willd.) Briq.)

Sreeramulu¹

2017

Int.J.Curr.Microbiol.App.Sci

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First report of Macrophomina root rot (Macrophomina phaseolina) on medicinal coleus (Coleus forskohlii) in India

Cited by 20 publications

References 1 publication

Overexpression of a New Osmotin-Like Protein Gene (SindOLP) Confers Tolerance against Biotic and Abiotic Stresses in Sesame

Overexpression of a New Osmotin-Like Protein Gene (SindOLP) Confers Tolerance against Biotic and Abiotic Stresses in Sesame

Identification and Characterization of Macrophomina phaseolina Causing Leaf Blight on White Spider Lilies (Crinum asiaticum and Hymenocallis littoralis) in Malaysia

Comparative Efficiency of Biocontrol Agents in the Management of Root Borne Diseases of Coleus (Coleus forskohlii (Willd.) Briq.)

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