Development of resistance to Microdochium nivale in winter wheat during autumn and decline of the resistance under snow

1994 ◽  
Vol 72 (8) ◽  
pp. 1211-1215 ◽  
Author(s):  
T. Nakajima ◽  
J. Abe
Keyword(s):  
Winter Wheat ◽  
Snow Cover ◽  
Triticum Aestivum L ◽  
Microdochium Nivale ◽  
Snow Mold ◽  
Development Of Resistance ◽  
Rate Of Decline ◽  
Food Reserves ◽  
Fusarium Nivale ◽  
Accumulated Degree Days

The effect of autumn climate on the development of resistance to pink snow mold (Microdochium nivale) in winter wheat was estimated in mid-December. Changes in resistance over time under snow cover were also determined. Resistance in December was closely correlated with the accumulated degree-days above 0 °C from sowing. The number of days of incubation at which 50% of the plants are killed (LI50) was lowest in the cool autumn in 1988 and highest in the warm autumn in 1989. Temperatures below 5 °C were also required for expression of resistance. Differences in LI50 between resistant and susceptible cultivars were most apparent in late autumn. Continuous snow cover was found to reduce resistance to pink snow mold. The rate of decline of the resistance in cv. Nanbukomugi during the winters under snow was lower than in cv. PI 173438 and cv. Kitakamikomugi. The resistance to pink snow mold was correlated with the amount of etiolated growth at 25 °C. This indicates that exhaustion of food reserves during prolonged snow cover predisposed wheat plants to snow mold diseases. Key words: pink snow mold, Fusarium nivale, Monographella nivalis, resistance progressive and degressive curves, Triticum aestivum L., field test.

Effects of hardening and plant age on development of resistance to cottony snow mold (Coprinus psychromorbidus) in winter wheat under controlled conditions

1987 ◽  
Vol 65 (6) ◽  
pp. 1152-1156 ◽  
Author(s):  
D. A. Gaudet ◽  
T. H. H. Chen
Keyword(s):  
Winter Wheat ◽  
Plant Age ◽  
Day Length ◽  
Minor Role ◽  
Freezing Resistance ◽  
Snow Mold ◽  
Wheat Seedlings ◽  
Development Of Resistance ◽  
Mold Resistance ◽  
A Minor

The development of resistance in winter-wheat seedlings to the cottony snow mold pathogen, Coprinus psychromorbidus Redhead et Traquair, was studied under controlled-environment conditions. Resistance was measured by the percentage of inoculated plants surviving after incubation at −3 °C for 8–12 weeks. The number of weeks of prehardening growth prior to inoculation, fresh weight, LT50, and tiller number were positively correlated with resistance to C. psychromorbidus. Prehardening temperatures of 7 and 15 °C favored development of snow mold resistance compared with 2 °C, but the LT50 (50% killing temperature) values of uninoculated plants were not significantly different. After 1 and 2.5 weeks growth at 20 °C, plants hardened at 2 °C and 12-h day length gradually increased in resistance to snow mold from 1 to 15 weeks of hardening. Development of resistance to C. psychromorbidus in winter wheat was most influenced by the amount of prehardening growth, and the development of freezing resistance played a minor role in disease resistance development. This form of resistance, which develops with increasing plant age, appeared to reduce the rate of infection and disease development by C. psychromorbidus.

scholarly journals A cold inducible multidomain cystatin from winter wheat inhibits growth of the snow mold fungus, Microdochium nivale

Planta ◽  
2005 ◽  
Vol 223 (6) ◽  
pp. 1207-1218 ◽  
Author(s):  
Petya Koeva Christova ◽  
Nikolai Kirilov Christov ◽  
Ryozo Imai
Keyword(s):  
Winter Wheat ◽  
Microdochium Nivale ◽  
Snow Mold ◽  
Mold Fungus

Effect of freezing resistance and low-temperature stress on development of cottony snow mold (Coprinus psychromorbidus) in winter wheat

1988 ◽  
Vol 66 (8) ◽  
pp. 1610-1615 ◽  
Author(s):  
D. A. Gaudet ◽  
T. H. H. Chen
Keyword(s):  
Low Temperature ◽  
Winter Wheat ◽  
Temperature Stress ◽  
Negative Relationship ◽  
Triticum Aestivum L ◽  
Low Temperature Stress ◽  
Freezing Resistance ◽  
Snow Mold ◽  
Canadian Prairies ◽  
Mold Resistance

The relationship between snow mold resistance and freezing resistance was studied under controlled-environment conditions, using winter wheat (Triticum aestivum L. em. Thell) cultivars varying in freezing resistance and resistance to cottony snow mold (Coprinus psychromorbidus Redhead & Traquair). Cultivars varying in freezing resistance were equally susceptible to C. psychromorbidus. There existed a negative relationship between snow mold resistance and freezing resistance. Sublethal, subzero freezing temperatures between −3 and −12 °C predisposed the winter wheat cultivar 'Winalta' to increased damage by C. psychromorbidus. A synergistic effect resulting in increased mortality was observed when winter wheat plants received a combination of low-temperature stress and inoculation with C. psychromorbidus. In hardened winter wheat plants, sublethal levels of snow mold damage following 6 weeks incubation with C. psychromorbidus resulted in a reduction in freezing resistance or LT50 (50% killing temperature) of approximately 7 °C compared with the noninoculated controls. The possible role of low-temperature stress on the susceptibility of winter wheats to C. psychromorbidus and of snow mold infection on the retention of freezing resistance in winter wheats during winter in the central and northern Canadian prairies is discussed.

Potential for winter wheat production in western Canada: A CERES model winterkill risk assessment

1991 ◽  
Vol 71 (1) ◽  
pp. 21-30 ◽  
Author(s):  
I. Savdie ◽  
R. Whitewood ◽  
R. L. Raddatz ◽  
D. B. Fowler
Keyword(s):  
Winter Wheat ◽  
Snow Cover ◽  
Field Studies ◽  
Triticum Aestivum L ◽  
Climatic Conditions ◽  
Limiting Factor ◽  
Western Canada ◽  
Climatic Data ◽  
Crop Models ◽  
The North

The introduction of a practical winter wheat (Triticum aestivum L.) production system, which utilizes direct no-till seeding into standing stubble immediately after harvest of the previous crop (stubbling-in) and snow trapping, has reduced the risk of winterkill and permitted expansion of the North American crop northeastward to include most of western Canada's agricultural area. The large expanse of this region results in considerable variation in climatic conditions and associated risks of winterkill. In the present study, 29 yr of climatic data for 53 stations were analyzed utilizing the CERES winterkill algorithm with the objective of determining the spatial distribution of various winterkill levels for stubbled-in "Norstar" winter wheat in western Canada. These simulations indicated that insulating snow cover is the pivotal climatic factor in winter wheat survival in the arid and transitional grassland ecoregions. The reliability of early winter snow cover appears to be more critical than the total overwinter amount. In the more northerly boreal climatic ecoregion, the limiting factor may be poor acclimation conditions and/or early incursion of killing Arctic air. This study demonstrates the usefulness of crop models, such as CERES, in extending the results of site-specific field studies to new areas and in risk analysis for planning and decision making. Key words: Winter wheat, winterkill, CERES model, Western Canada

A method for assessing resistance to the snow molds Typhula incarnata and Microdochium nivale in winter wheat incubated at the optimum growth temperature ranges of the fungi

1990 ◽  
Vol 68 (2) ◽  
pp. 343-346 ◽  
Author(s):  
T. Nakajima ◽  
J. Abe
Keyword(s):  
Winter Wheat ◽  
Microdochium Nivale ◽  
Snow Mold ◽  
Optimum Growth Temperature ◽  
Temperature Ranges ◽  
Typhula Incarnata ◽  
Field Plots ◽  
Growth Of Fungi ◽  
Incubation Method

Studies were carried out to determine whether incubation of wheat plants at the temperatures optimum for growth of fungi could reduce the time normally required for determination of resistance to Typhula incarnata and Microdochium nivale in wheat, comparing with conventional under-snow incubation methods in field plots. Typhula incarnata produced greater damage to the winter wheat plants at temperatures of 5 and 10 °C than M. nivale. At 15 and 18 °C, there existed little difference in virulence and we could complete incubation in a period of weeks. Incubation of the plants for varying periods of time was of use for quantitative determination of the degree of resistance expressed as LI50 (the number of incubation days when 50% of the plants are killed) values. The relative order of resistance among cultivars of wheat was consistent with that obtained from an under-snow incubation method. The new technique permitted wheat breeders to screen genotypes of wheat for resistance to snow mold pathogens in a shorter period, with less expensive facilities than the conventional "snow mold chamber method."

Production of low temperature active lipase from the pink snow mold, Microdochium nivale (syn. Fusarium nivale)

1996 ◽  
Vol 18 (5) ◽  
pp. 509-510 ◽  
Author(s):  
Tamotsu Hoshino ◽  
Satoru Ohgiya ◽  
Tadayuki Shimanuki ◽  
Kozo Ishizaki
Keyword(s):  
Low Temperature ◽  
Microdochium Nivale ◽  
Snow Mold ◽  
Fusarium Nivale ◽  
Active Lipase

scholarly journals Estimation of immunity of the winter grain varieties sown in the south of Russia to the pink snow mold pathogen (Microdochium nivale)

2021 ◽  
pp. 75-80
Author(s):  
G. V. Volkova ◽  
Ya. V. Yakhnik ◽  
O. V. Tarancheva
Keyword(s):  
Winter Wheat ◽  
High Resistance ◽  
Methodological Approach ◽  
Wheat Variety ◽  
Winter Barley ◽  
Microdochium Nivale ◽  
The South ◽  
Snow Mold ◽  
Winter Triticale ◽  
Very High

The purpose of the current study was to estimate immunity of the winter grain varieties sown in the south of Russia to the pink snow mold pathogen (Microdochium nivale (Fr.) Samuels & I.C. Hallett) in the sprouting phase. For resistance to M. nivale there have been studied 35 winter wheat varieties sown in the south of the Russian Federation, 19 winter barley varieties and 4 variety samples and 13 winter triticale varieties developed in the LLC “Agrostandart”, FSBSI RCG named after P.P. Lukyanenko, FSBSI FRC Kabardino-Balkarian Research Center of the RAS, FSBSI “ARC Donskoy”, FSBSI “North Caucasian FRSC”, FSBSI “FRAC”, NPO “KUBANZERNO”, FSBEI HE “KubSAU”. There has been substantiated a methodological approach to conducting research on immunological estimation of winter grain varieties in the laboratory conditions. The optimal temperature for the cultivation of the pathogen was +10/+15 °C (with a photoperiod of 12 hours). There was found that the required temperature to stimulate sporulation was +5 °C. The optimum temperature for the incubation period was +5 °C at 85% humidity. There has been established that the only winter wheat variety ‘Dolya’ had a very high resistance degree to pink snow mold; the varieties ‘Antonina’ and ‘Brigada’ had a high resistance degree; 21 varieties were classified as resistant. M. nivale resistance was demonstrated by 9 winter barley varieties and 3 variety samples (‘Versal’, ‘Iosif’, ‘KA-12’, ‘KA-5/KA-3’, ‘KA-5/KA-1’, ‘Karrera’, ‘Kondrat’, ‘Kubagro-1’, ‘Lazar’, ‘Master’, ‘Romans’, ‘Sarmat’). Among the studied winter triticale varieties, 4 varieties had a very high resistance degree (‘Argus’, ‘Slon’, ‘Tikhon’, ‘Ullubiy’) and 9 varieties had a high resistance degree to pink snow mold pathogen (‘Aznavur’, ‘Argo’, ‘Arioso’, ‘Valentin 90’, ‘Iliya’, ‘Sotnik’,’ Styuard’, ‘Forte’, ‘Khleborob’).

scholarly journals Relationship between Physiological and Ecological Traits and Snow Mold Damage in Winter Wheat Varieties (Triticum aestivum L.).

1997 ◽  
Vol 47 (3) ◽  
pp. 271-277
Author(s):  
Tatsuo Kuwabara ◽  
Jiro Abe ◽  
Masahisa Moriyama ◽  
Norio lriki ◽  
Midori Yoshida ◽  
...  
Keyword(s):  
Triticum Aestivum ◽  
Winter Wheat ◽  
Triticum Aestivum L ◽  
Ecological Traits ◽  
Wheat Varieties ◽  
Snow Mold ◽  
Winter Wheat Varieties

Environmental factors affecting expression of resistance to pink snow mold caused by Microdochium nivale in winter wheat

1996 ◽  
Vol 74 (11) ◽  
pp. 1783-1788 ◽  
Author(s):  
T. Nakajima ◽  
J. Abe
Keyword(s):  
Winter Wheat ◽  
Low Temperatures ◽  
Cold Hardiness ◽  
Rapid Development ◽  
Light Period ◽  
Microdochium Nivale ◽  
Cold Hardening ◽  
Low Light ◽  
Snow Mold ◽  
Light Intensities

The effects of prehardening growth, cold-hardening temperatures, duration of cold hardening, light intensity, and light period during cold hardening on the development of resistance to Microdochium nivale in winter wheat were studied under controlled environment conditions. Resistance was expressed as the median lethal incubation days (LI50) measured by the optimum temperature inoculation method of T. Nakajima and J. Abe. Plant growth at 20:15 °C (light:dark) had the largest effect on augmenting resistance to M. nivale in winter wheat, but conditioning at low temperatures was essential for expression of resistance. Low temperature conditioning at 6–4 °C under low light intensities initiated a rapid development of M. nivale resistance; this process was slower at 4–12 °C. ‘PI 173438’, resistant to snow molds but not to low temperatures, required lower temperatures during cold hardening for full expression of resistance to M. nivale than ‘Nanbukomugi’, which was moderately resistant to snow molds and low temperatures. When conditioned at 2 °C, the plants subjected to the dark remained susceptible but developed resistance rapidly when exposed to low light intensities of 150 μmol ∙ m−2 ∙ s−1. Extending the light period from 8 to 16 h did not affect the expression of resistance to M. nivale. These results suggest that the pattern of development of snow mold resistance is substantively different from that involved in freezing tolerance, although both appear to be conditioned by low temperatures. Keywords: Monographella nivalis, Fusarium nivale, Triticum aestivum L., cold hardiness, snow mold, winter wheat.

Sign in / Sign up

Export Citation Format

Share Document