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Oryzae isolated from rice
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A number of Pyricularia species are known to infect different grass species. In the case of Pyricularia oryzae (syn. Magnaporthe oryzae), distinct populations are known to be adapted to a wide variety of grass hosts, including rice, wheat and many other grasses.
11p
viseulgi2711
31-08-2021
11
1
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Rice (Oryza sativa) occupies a prime position in the family Poaceae and it is the highly consumable crop of almost half of the world's population. Among the various diseases affecting rice, blast incited by Magnaporthe oryzae is the one of the ubiquitous and economically important disease which affects almost all the stages of crop and cause yield loss upto 50%. In the present study, survey was carried out in Nilgiri and Madurai districts of Tamil Nadu for the collection of blast isolates. The blast disease incidence ranged from 8.8 to 42.4 per cent in various rice cultivars.
8p
chauchaungayxua11
23-03-2021
22
2
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This study aims to find antagonistic bacteria that are able to provide the highest resistance to the growth of pathogenic Xoo bacteria in rice plants. Antagonistic bacteria were isolated from the leaves and roots of rice plants through surface sterilization and serial dilution. Obtained 53 bacterial isolates consisting of 20 bacterial isolates from leaves and 33 bacterial isolates from roots tested hypersensitive to tobacco plants for filtering potential non-pathogenic bacteria.
12p
chauchaungayxua11
23-03-2021
10
3
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In the present investigation, an attempt was made to isolate endophytic fungi from rice plant (Oryza sativa L.). A total of 48 fungi were isolated from 288 segments, from 4 varieties (Gitanjali, Hiranyamayee, Khandagiri and Lalat) of rice plant (Oryza sativa L). The coloniczation frequency of the endophytic fungi were observed to be 16.87% and 16.40% in leaf and stem respectively.
14p
chauchaungayxua11
23-03-2021
7
1
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The metabolite 2-(1,1-diallyl-but-3-enyl)-5-nonyl-phenol isolated from Streptomyces sp. TC1 exhibited antimicrobial activity against bacterial leaf blight pathogen Xanthomonas oryzae pv. oryzae (Xoo). The in vitro antimicrobial activity was found to be between 1.8-2.5 cm in agar well diffusion assay against the tested Xoo isolates and 200 µg/ml in terms of minimum inhibitory concentration. The isolated compound showed well binding with the virulence proteins of Xoo by producing a better docking score in molecular docking studies.
10p
nguaconbaynhay10
22-01-2021
12
1
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In this study, the Mgra16281 gene (ID: MK322955.1) enco ding an effector with the unknown function was cloned from the rice ro ot-knot nematode Meloidogyne graminicola isolated in Long An province. To knock-down the expression of this gene, an artificial microRNA was synthesized based on the Osa-MIR528 precursor and inserted into an expression vector.
9p
larachdumlanat129
19-01-2021
12
1
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In the present study collected twenty (20) direct sown paddy rhizosphere soil samples from four districts of Andhra Pradesh and recorded their geographical position of collected soil samples. From that thirty two (32) Zinc Solubilizing Bacteria (ZnSB) isolated by using zinc phosphate [Zn3(PO4)2] as a insoluble source of zinc in the trismineral salts media. Zinc solubilizing isolates coded based on their soil sample collected geographical position, recorded the morphological, cultural characteristics of ZnSB.
13p
trinhthamhodang9
16-12-2020
15
2
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The present study was conducted in order to characterize the isolates of the fungus, Ustilaginoidea virens causing false smut disease, collected from different geographical regions of south India and cultured on Potato Sucrose Agar (PSA) medium.
9p
chauchaungayxua8
03-10-2020
12
2
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The bacterial leaf blight of rice caused by Xanthomonas oryazae pv. oryzae is the disease of great economics importance in India especially in Bihar. Management of BLB disease can play a vital role in management of rice disease. In the present investigation evolution of different plant extract (botanical) and new chemical on growth of bacteria by poison food technique and sowing by best botanical and new chemical were conducted and antagonistic activity were tested.
7p
trinhthamhodang7
31-08-2020
7
1
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Rice blast caused by Pyricularia grisea (Cooke) Sacc. became one of the most important disease in rice growing areas of Telangana State because of its wide distribution and destructiveness under favourable conditions. However, sometimes resistant varieties may become ineffective due to evolutionary changes in the pathogen population. Keeping in view the importance of disease, studies were conducted on cultural and morphological variability of P. grisea isolates.
9p
kethamoi7
26-08-2020
24
1
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Rice (Oryza sativa L.) is an important cereal crop and prone to many diseases out ofwhich, rice blast caused by Pyricularia grisea is of significant economic importance due to its destructive nature leading to serious yield loss. Blast infected leaves of rice, Panicum grass and finger millet were collected from different fields of OUAT farm, Bhubaneswar.
6p
angicungduoc6
22-07-2020
17
2
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Among the fungal diseases in rice plants, brown spot disease caused by (Bipolaris oryzae) and sheath rot disease caused by (Sarocladium oryzae) are considered as serious threats in rice cultivation in India. Rice plant samples showing the brown spot and sheath rot disease were collected from different places.
10p
trinhthamhodang1213
30-05-2020
27
0
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Brown spot disease caused by Bipolaris oryzae results in the yield loss of paddy in the recent years. In the present study, isolates were collected from nine rice growing states of India. Based on colony morphology and growth pattern, the 17 isolates of B. oryzae were characterized and formed four groups. These were (Group I) black with fluffy growth, (Group II) grey with fluffy growth and white spots, (Group III) grey with fluffy growth and (Group IV) grey with suppressed growth. Further the morphological characterization was studied on different media and spectral values for all isolates.
10p
cothumenhmong4
25-03-2020
16
0
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The Bacterial blight disease caused by Xanthomonas oryzae pv. oryzae (Xoo) is one of the most important disease and has caused crop failure in rice crops. This pathogen infects the leaves in all plant growth phases.
9p
nguaconbaynhay4
22-03-2020
7
1
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Rice (Oryza sativa L.) is the world’s most important crop and a primary source of food for more than half of the global population. In India, rice is a staple food for more than 65 per cent population. However, the crop is subjected to attack by many diseases among which rice blast caused by the fungus Pyricularia oryzae is one of the most economically important diseases. The pathogen was isolated from the rice field of Uttar Banga Krishi Viswavidyalaya Farm, purified, and characterized based on morphological and cultural characters. Highest mycelial growth of 28.50 mm and 71.
9p
caygaocaolon3
27-02-2020
17
1
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Rice is one of the important cereal crop and known to be affected by many diseases. Bacterial leaf blight of rice is a destructive disease of rice, known to be caused by Xanthomonas oryzae pv. oryzae and it also be reported to cause by species of Pantoea. BLB diseased samples were collected from southern districts of Tamil Nadu and upon isolation, the pathogen was thought to be Xanthomonas oryzae pv. oryzae. But, the results of biochemical and molecular characterization revealed that the causal agent was not Xanthomonas, but a new species of bacterium Pantoea stewartii subsp.
8p
cothumenhmong3
22-02-2020
11
0
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Cultural and morphological characters of fifteen isolates of Sclerotium oryzae Catt. collected from different rice growing areas in Telangana and Andhra Pradesh states were studied. Significant differences in growth, mycelial dry weights and sclerotial characters were observed among the fifteen isolates grown on PDA and PDB. All the 15 isolates were divided into two groups based on the growth pattern on PDA. Group 1 consists of ten isolates SO2, SO3, SO5, SO6, SO7, SO10, SO11, SO12, SO14 and SO15 which exhibited fast growth rate in terms of colony diameter with a range of 80 mm to 83 mm.
6p
nguaconbaynhay3
07-02-2020
24
0
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The study was conducted to describe the growth characteristics of the leaf blast pathogen Pyricularia oryzae isolates on different solid media viz., Host Extract Agar (HEA), Oat Meal Agar (OMA), Potato dextrose agar, Richard’s Agar medium. Among all the solid media the highest mean mycelial growth of the fungus Pyricularia oryzae was recorded on Host Extract Agar (4.08 cm) followed by Oat meal agar (3.83 cm) and least mean mycelial growth of the P. oryzae on Richard’s agar media (3.21).
9p
chauchaungayxua3
07-02-2020
12
0
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Stem rot of rice (Oryza sativae L.) caused by Sclerotium oryzae Catt. is found to occur frequently in Manipur infecting all cultivated lowland rice cultivars and become a major concern in rice production. Local strains of Pseudomanas fluorescens and Trichoderma collected from rice fields of Imphal East and Imphal West districts of Manipur were screened for their ability to control S. oryzae and production of different biocontrol mechanisms under laboratory conditions. Further, combined application of talc formulations of selected strains of P. fluorescens IE 62 and T.
14p
cothumenhmong1
11-12-2019
9
1
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Little is known about the functions of DNA polymerasek (Pol k) recently identified in mammals. From the genomic sequence information of rice andArabidopsis, we found that Polkmay be the only member of the X-family in higher plants. We have succeeded in isolating the cDNA and recombinant protein of Polkin a higher plant, rice (Oryza sativaL. cv. Nipponbare) (OsPolk). OsPolkhad activities of DNA polymerase, terminal deoxyribonucleotidyl trans-ferase and deoxyribose phosphate lyase, a marker enzyme for base excision repair. ...
9p
dell39
03-04-2013
50
2
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