Publications by authors named "Manjunatha Channappa"

, , and are potent bacterial endophytes, which typically exhibit host-specific interactions. However, comparative studies of these endophytes and in non-host crops are lacking. Therefore, in this study, we evaluated the potential of endophytes strain HP3d, strain PGSS1, strain A6, and P42, isolated from various crop ecosystems in promoting plant growth and inducing systemic resistance against early blight disease in tomato.

View Article and Find Full Text PDF

Endophytes stimulate plant growth and inhibit phytopathogens. Most of the known endophytes are host-specific and only a few strains are effective for practical field use. Thus, this study focuses on the evaluation of endophytes .

View Article and Find Full Text PDF

Bacillus thuringiensis Berliner is recognized as a predominant bioinsecticide but its antifungal potential has been relatively underexplored. A novel B. thuringiensis strain NBAIR BtAr was isolated and morphologically characterized using light and scanning electron microscopy, revealing presence of bipyramidal, cuboidal, and spherical parasporal crystals.

View Article and Find Full Text PDF

Sheath blight of rice is a global disease that significantly reduces rice yield. This study reports the antifungal activity of an active compound of essential oil, thymol, at different concentrations against Rhizoctonia solani (strain RS-Gvt). In vitro assay results indicated that thymol concentrations (0.

View Article and Find Full Text PDF

Bacillus thuringiensis is the most widely used biopesticide, targets a diversity of insect pests belonging to several orders. However, information regarding the B. thuringiensis strains and toxins targeting Zeugodacus cucurbitae is very limited.

View Article and Find Full Text PDF

Matile-Ferrero (Hemiptera: Pseudococcidae), is an economically important invasive cassava pest responsible for the massive devastation of cassava in Asia and African continent. Initially, identifying this invasive pest posed challenges because it closely resembled native mealybug species. Additionally, the traditional morphological identification process is labor-intensive and time-consuming.

View Article and Find Full Text PDF
Article Synopsis
  • * Analysis revealed 66,415 transcripts in the resistant wheat genotype versus 68,688 in the susceptible one, with thousands of unique and common genes identified between them.
  • * Real-time PCR showed that many defense-related genes were activated early in the resistance process, indicating a quick defense response to inhibit the pathogen's establishment.
View Article and Find Full Text PDF

False smut disease of rice caused by is an emerging threat to rice cultivation worldwide due to its detrimental effects on grain yield and quality. False smut disease severity was 4.44‒17.

View Article and Find Full Text PDF

Powdery mildew of Indian mustard (), caused by , is emerging as major problem in India. All the Indian mustard cultivars presently grown in India are highly susceptible to powdery mildew and so far no resistance source has been reported. In this study, with an aim to identify resistant source, 1,020 Indian mustard accessions were evaluated against PMN isolate, at Wellington, The Nilgiris, Tamil Nadu, India under natural hot spot conditions.

View Article and Find Full Text PDF