Reaction to common root rot of 14 Triticum species and the incidence of Bipolaris sorokiniana and Fusarium spp. in subcrown internode tissue

1972 ◽  
Vol 50 (9) ◽  
pp. 1805-1810 ◽  
Author(s):  
Howard Harding
Keyword(s):  
Root Rot ◽  
Bipolaris Sorokiniana ◽  
The Other ◽  
Tetraploid Species ◽  
Common Root ◽  
Fusarium Spp ◽  
Triticum Timopheevi ◽  
Common Root Rot ◽  
Triticum Species ◽  
The Common

There was wide variation in the common root rot reaction of lines and varieties of 14 Triticum species. The diploids, T. aegilopoides and T. monococcum, were the most resistant. Triticum timopheevi appeared to be more resistant than the other tetraploid species. The highest disease ratings were recorded in the hexaploid group with T. compactum being the most susceptible species. The range of reaction within the T. aestivum group was almost as wide as that over all Triticum species. Several old varieties appeared to have resistance at least equal to Manitou. Bipolaris sorokiniana was isolated from subcrown internodes of all lines and varieties tested. The incidence of B. sorokiniana in tetraploid and hexaploid lines was about twice that found in diploid lines. There were only poor correlations between disease ratings and numbers of internodes yielding B. sorokiniana.

Nocardiopsis dassonvillei strain MB22 from the Algerian Sahara promotes wheat seedlings growth and potentially controls the common root rot pathogen Bipolaris sorokiniana

2019 ◽  
Vol 101 (4) ◽  
pp. 1115-1125 ◽  
Author(s):  
Khadidja Allali ◽  
Yacine Goudjal ◽  
Miyada Zamoum ◽  
Khaoula Bouznada ◽  
Nasserdine Sabaou ◽  
...  
Keyword(s):  
Root Rot ◽  
Bipolaris Sorokiniana ◽  
Common Root ◽  
Wheat Seedlings ◽  
Common Root Rot ◽  
Algerian Sahara ◽  
The Common

scholarly journals Efficacy of Bacillus SPP. strains against barley diseases caused by Bipolaris Sorokiniana on cultivars of different resistance

2020 ◽  
Vol 11 (4) ◽  
Author(s):  
L. O. Kriuchkova ◽  
◽  
T. I. Patyka ◽  
Keyword(s):  
Root Rot ◽  
Bipolaris Sorokiniana ◽  
Spot Blotch ◽  
Growth Media ◽  
Common Root ◽  
Common Root Rot ◽  
Medium Resistance ◽  
Bacillus Spp ◽  
The Common ◽  
Bacillus Strains

The effect of Bacillus strains, B. subtilis 16 and B. pumilus 11, on two barley diseases caused by Bipolaris sorokiniana (Sacc.) Shoemaker has been studied. It was found that the activity depends on both the resistance of the cultivar against disease and the bacterial strain. The severity of spot blotch of barley decreased significantly when the cell suspension of B. subtilis strain16 was sprayed on the leaves of disease-susceptible cultivars Nashсhadok, but failed to inhibit the disease on the leaves of resistant cultivars. Applying the cell suspensions into plant growth media significantly inhibited the common root rot on susceptible cultivar Syaivo, which, however, was not accompanied by an increase in the biomass of seedlings. A significant increase in the weight of shoots and roots of seedlings was observed on cultivars with medium resistance to the disease: Sebastian and Antey.

scholarly journals Antagonistic Strain Bacillus amyloliquefaciens XZ34-1 for Controlling Bipolaris sorokiniana and Promoting Growth in Wheat

Pathogens ◽  
2021 ◽  
Vol 10 (11) ◽  
pp. 1526
Author(s):  
Yanjie Yi ◽  
Youtian Shan ◽  
Shifei Liu ◽  
Yanhui Yang ◽  
Yang Liu ◽  
...  
Keyword(s):  
Biological Control ◽  
Root Rot ◽  
Bacillus Amyloliquefaciens ◽  
Biological Control Agent ◽  
Wheat Yield ◽  
Bipolaris Sorokiniana ◽  
Common Root ◽  
Bioactive Substances ◽  
Wheat Seedlings ◽  
Common Root Rot

Common root rot, caused by Bipolaris sorokiniana, is one of the most prevalent diseases of wheat and has led to major declines in wheat yield and quality worldwide. Here, strain XZ34-1 was isolated from soil and identified as Bacillus amyloliquefaciens based on the morphological, physiological, biochemical characteristics and 16S rDNA sequence. Culture filtrate (CF) of strain XZ34-1 showed a high inhibition rate against B.sorokiniana and had a broad antifungal spectrum. It also remarkably inhibited the mycelial growth and spore germination of B. sorokiniana. In pot control experiments, the incidence and disease index of common root rot in wheat seedlings were decreased after treatment with CF, and the biological control efficacy was significant, up to 78.24%. Further studies showed XZ34-1 could produce antifungal bioactive substances and had the potential of promoting plant growth. Lipopeptide genes detection with PCR indicated that strain XZ34-1 may produce lipopeptides. Furthermore, activities of defense-related enzymes were enhanced in wheat seedlings after inoculation with B.sorokiniana and treatment with CF, which showed induced resistance could be produced in wheat to resist pathogens. These results reveal that strain XZ34-1 is a promising candidate for application as a biological control agent against B.sorokiniana.

The effect of common root rot on components of grain yield in Manitou wheat

1976 ◽  
Vol 54 (24) ◽  
pp. 2888-2892 ◽  
Author(s):  
P. R. Verma ◽  
R. A. A. Morrall ◽  
R. D. Tinline
Keyword(s):  
Triticum Aestivum ◽  
Grain Yield ◽  
Disease Severity ◽  
Root Rot ◽  
Major Effect ◽  
Kernel Weight ◽  
The Other ◽  
Cochliobolus Sativus ◽  
Common Root ◽  
Common Root Rot

The effects of common root rot (Cochliobolus sativus) on components of grain yield in naturally infected Triticum aestivum cultivar Manitou were studied at Matador, Saskatchewan, by sampling plants at maturity in 1969, 1970, and 1971. Plants were sorted into severe (SE), moderate (MO), slight (SL), and clean (CL) categories based mainly on the extent of lesions on the subcrown internodes. The number of tillers per plant, the number and weight of grains per head, the weight per head, and the 1000-kernel weight in each category were determined. Increasing values of all five components were consistently associated with decreasing disease severity. SE was mostly significantly different from the other three categories in all components except 1000-kernel weight; differences between SL and MO were usually non-significant. CL and SL were mostly significantly different for the number of tillers per plant and weight per head but non-significant for the weight and number of grains per head and 1000-kernel weight. Apparently, the major effect of common root rot was to reduce the number of tillers per plant and number of grains per head.

Resistance to soil-borne diseases of wheat: Contributions from the wheatgrasses Thinopyrum intermedium and Th. ponticum

2008 ◽  
Vol 88 (1) ◽  
pp. 195-205 ◽  
Author(s):  
Hongjie Li ◽  
R. L. Conner ◽  
T. D. Murray
Keyword(s):  
Resistance Genes ◽  
Root Rot ◽  
Vascular System ◽  
Bipolaris Sorokiniana ◽  
Wheat Breeding ◽  
Thinopyrum Intermedium ◽  
Common Root ◽  
Chromosome Addition ◽  
Common Root Rot ◽  
Oculimacula Yallundae

Eyespot, Cephalosporium stripe, and common root rot are soil-borne diseases that damage the stem bases, vascular system, subcrown internodes,and roots of wheat. Resistance in wheat to these diseases is insufficient to prevent significant yield loss when disease is severe. The wheatgrasses Thinopyrum intermedium and Th. ponticum are highly resistant to these diseases. Identification of disease-resistant wheat-Thinopyrum partial amphiploids, chromosome addition, substitution, and translocation lines makes them a valuable source of resistance genes for wheat breeding programs. Single chromosomes or chromosome segments containing resistance genes can be transferred into wheat to produce genetic stocks that afford a better understanding of the genetic control of resistance in wheatgrasses and new genetic resources for wheat improvement. Resistance to eyespot in Th. intermedium and Th. ponticum was associated with the homoeologous group 4 chromosomes, whereas resistance to Cephalosporium stripe was controlled by genes located on chromosomes 3 and 6 of Th. ponticum. Despite the fact that some eyespot- and common root rot-resistant wheat-Thinopyrum lines have blue kernels, resistance is not tightly linked to the blue aleurone trait. Key words: Thinopyrum intermedium, Th. ponticum, eyespot, Cephalosporium stripe, common root rot, Oculimacula yallundae, O. acuformis, Cephalosporium gramineum, Bipolaris sorokiniana

scholarly journals Distribution and Prevalence of Fusarium Crown Rot and Common Root Rot Pathogens of Wheat in Montana

Plant Disease ◽  
2011 ◽  
Vol 95 (9) ◽  
pp. 1099-1108 ◽  
Author(s):  
Ernesto A. Moya-Elizondo ◽  
Lisa J. Rew ◽  
Barry J. Jacobsen ◽  
Andrew C. Hogg ◽  
Alan T. Dyer
Keyword(s):  
Root Rot ◽  
Quantitative Polymerase Chain Reaction ◽  
Bipolaris Sorokiniana ◽  
Crown Rot ◽  
Detection Methods ◽  
Common Root ◽  
Fusarium Crown Rot ◽  
Common Root Rot ◽  
Isolation Methods ◽  
First Time

Distribution of Fusarium crown rot (FCR) and common root rot (CRR) pathogens associated with wheat (Triticum aestivum) in 91 fields in Montana were determined during the 2008 and 2009 crop seasons using real-time quantitative polymerase chain reaction (qPCR) and conventional isolation methods. Correlations (P < 0.001) were found between detection methods for both diseases. FCR was detected in 57% of the fields and CRR was detected in 93% of the fields surveyed. Percent incidence based on isolation from individual tillers was Bipolaris sorokiniana (15%), F. culmorum (13%), and F. pseudograminearum (8%). FCR populations were highly variable across the regions and were not detected in any fields from the Gb5 soil types of Judith Basin and Fergus counties. The spatial distributions of FCR and CRR were affected by elevation, soil type, and temperature. High FCR populations were associated with spring wheat crops rather than winter wheat based on qPCR (P < 0.001). FCR and CRR could produce yield losses in a range of 3 to 35%. This study is the first time that qPCR was used to survey these two pathogen groups, and the merits and weakness of qPCR relative to traditional isolation methods are discussed.

scholarly journals Lack of Relationship Between Susceptibility to Common Root Rot and Drought Tolerance Among Several Closely Related Wheat Lines

Plant Disease ◽  
2000 ◽  
Vol 84 (1) ◽  
pp. 25-28 ◽  
Author(s):  
G. Piccinni ◽  
C. M. Rush ◽  
K. M. Vaughn ◽  
M. D. Lazar
Keyword(s):  
Drought Tolerance ◽  
Root Rot ◽  
Disease Incidence ◽  
Bipolaris Sorokiniana ◽  
Disease Index ◽  
Grain Weight ◽  
Common Root ◽  
Plant Introductions ◽  
Common Root Rot ◽  
Wheat Lines

Common root rot caused by Bipolaris sorokiniana is a disease of wheat associated with plant stress. Three cultivars (Siouxland, TAM 200, and TAM 107) and several hard red winter wheat lines closely related to TAM 107, but known to differ with respect to drought tolerance, were included in a 2-year dryland field study to evaluate whether observed variation in drought tolerance was associated with susceptibility to B. sorokiniana. Untreated seed of each entry or seed treated with imazalil was planted in soil naturally infested with B. sorokiniana. Plants were evaluated at jointing and at harvest. Disease incidence and severity, number of plants, number of heads, and grain weight per meter were evaluated. Grain weight and number of heads of individual plants were recorded in order to correlate disease rating of each plant with yield components. Plot yield and test weight also were measured. There were significant entry by seed treatment interactions for number of heads per plant, grain weight per plant, and grain weight per meter. A year by treatment interaction was found for the jointing disease index, and plants grown from seed treated with imazalil had a significantly lower disease index than those grown from nontreated seed. Observed drought tolerance among the three varieties and eight closely related plant introductions was not associated with disease susceptibility to common root rot.

Biological Control of Common Root Rot of Wheat (Bipolaris sorokiniana) by Trichoderma Isolates

2005 ◽  
Vol 4 (1) ◽  
pp. 85-90 ◽  
Author(s):  
M. Salehpour . ◽  
H.R. Etebarian . ◽  
A. Roustaei . ◽  
G. Khodakaramian . ◽  
H. Aminian .
Keyword(s):  
Biological Control ◽  
Root Rot ◽  
Bipolaris Sorokiniana ◽  
Common Root ◽  
Common Root Rot ◽  
Trichoderma Isolates

The effects of fumigation, rotation with lupins, and nitrogen application on plant growth and common root rot of wheat at Geraldton, Western Australia

1990 ◽  
Vol 41 (4) ◽  
pp. 619 ◽  
Author(s):  
JM Wilson ◽  
J Hamblin
Keyword(s):  
Grain Yield ◽  
Root Rot ◽  
Bipolaris Sorokiniana ◽  
Field Trials ◽  
Soil Fumigation ◽  
N Fertilizer ◽  
Soil Nitrate ◽  
Nitrogen Application ◽  
Common Root ◽  
Common Root Rot

The effects of soil fumigation (98% methyl bromide + 2% chloropicrin at 580 kg/ha) and N fertilizer (0, 12.5, 25, 50 or 100 kg N/ha) were examined in field trials on continuous wheat and wheat in rotation with lupins on the Geraldton sandplain. Fumigation increased grain yields at N fertilizer levels more or =25 kg/ha and was associated with reduced incidence and severity of common root rot (Bipolaris sorokiniana)[Cochliobolus sativus]. Grain yield was not significantly affected by rotation. Fumigation increased soil ammonium levels and decreased soil nitrate levels. Rotation of wheat and lupins increased mid-season growth at all levels of applied N but only increased grain yield where no N was applied.

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