Alternaria alternata from oilseed rape: mycotoxin production, and toxicity toArtemia salina larvae and rape seedlings

1992 ◽  
Vol 8 (1) ◽  
pp. 9-16 ◽  
Author(s):  
A Visconti ◽  
A Sibilia ◽  
C Sabia
Keyword(s):  
Oilseed Rape ◽  
Alternaria Alternata ◽  
Mycotoxin Production ◽  
Rape Seedlings

scholarly journals Influence of Oilseed Rape Seed Treatment with Imidacloprid on Survival, Feeding Behavior, and Detoxifying Enzymes of Mustard Aphid, Lipaphis erysimi

Insects ◽  
2019 ◽  
Vol 10 (5) ◽  
pp. 144
Author(s):  
Fang Huang ◽  
Zhongping Hao ◽  
Fengming Yan
Keyword(s):  
Feeding Behavior ◽  
Oilseed Rape ◽  
Lipaphis Erysimi ◽  
Seed Coating ◽  
Detoxifying Enzymes ◽  
Feeding Behaviors ◽  
Mustard Aphid ◽  
Coating Agent ◽  
Aphid Feeding ◽  
Rape Seedlings

Imidacloprid application, as a seed coating agent on oilseed rape, is recommended to control mustard aphid, Lipaphis erysimi (Kaltenbach) (Hemiptera: Aphididae). In this study, responses of L. erysimi were investigated, including survival, feeding behavior, and detoxifying enzymes, on the oilseed rape seedlings grown from seeds coated with imidacloprid at rates of 6, 12, or 18 g active ingredient (a.i.)/kg seed. The results showed that the aphids’ survival rate, together with that of the progeny of the survivors, on the seed-treated seedlings significantly decreased. This indicates that the aphid population in fields can be suppressed effectively. The electrical penetration graph (EPG) technique was used to record aphid feeding behaviors on two-, four-, and six-leaf stages of oilseed rape seedlings that had been seed-coated with imidacloprid, and individual responses were revealed during the aphid feeding behavior. On the plants at the two-leaf stage, aphid feeding behaviors were influenced, showing decreased frequency of stylet penetration into the leaf (probe) or into the mesophyll cells (potential drops, pds for short), and shortened duration of stylet event in the leaf (probe) or in the phloem. On the plants at the four- and six-leaf stages, these impacts of imidacloprid were weakened; however, the saliva secretion duration in phloem was shortened to less than 5 min in all imidacloprid treatments. The activity of mixed-function oxidase in aphids maintained on the treated seedlings with imidacloprid was elevated. In conclusion, imidacloprid could be used as a seed coating agent for aphid control, but chemical resistance in aphids should not be ignored.

scholarly journals Benzyl isothiocyanate fumigation inhibits growth, membrane integrity and mycotoxin production in Alternaria alternata

RSC Advances ◽  
2020 ◽  
Vol 10 (3) ◽  
pp. 1829-1837
Author(s):  
Tiaolan Wang ◽  
Yongcai Li ◽  
Yang Bi ◽  
Miao Zhang ◽  
Tingting Zhang ◽  
...  
Keyword(s):  
Antifungal Activity ◽  
Alternaria Alternata ◽  
Membrane Integrity ◽  
Black Spot ◽  
Causal Agent ◽  
Benzyl Isothiocyanate ◽  
Mycotoxin Production

The antifungal activity of benzyl isothiocyanate (BITC) against pear pathotype-Alternaria alternata, the causal agent of pear black spot, and its possible mechanisms were studied.

Influence of water activity and temperature on growth and mycotoxin production by Alternaria alternata on irradiated soya beans

2011 ◽  
Vol 149 (2) ◽  
pp. 127-132 ◽  
Author(s):  
Maria Silvina Oviedo ◽  
Maria Laura Ramirez ◽  
Germán Gustavo Barros ◽  
Sofia Noemi Chulze
Keyword(s):  
Water Activity ◽  
Alternaria Alternata ◽  
Mycotoxin Production ◽  
Influence Of Water

Transportation and fate of gold nanoparticles in oilseed rape

RSC Advances ◽  
2015 ◽  
Vol 5 (90) ◽  
pp. 73827-73833 ◽  
Author(s):  
Jichao Zhang ◽  
Liang Pan ◽  
Min Lv ◽  
Ali Aldalbahi ◽  
Tian Xie ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Gene Delivery ◽  
Oilseed Rape ◽  
Potential Application ◽  
Rape Seedlings

In this work, we demonstrate the mild effect of AuNPs on the growth of oilseed rape seedlings and suggest their potential application as vehicles for gene delivery in plants.

scholarly journals The effect of sowing time on pest spreading in spring oilseed rape crop

2018 ◽  
Vol 24 (4) ◽  
Author(s):  
Rimantas Velička ◽  
Lina Marija Butkevičienė ◽  
Rita Pupalienė ◽  
Zita Kriaučiūnienė ◽  
Robertas Kosteckas ◽  
...  
Keyword(s):  
Oilseed Rape ◽  
Verticillium Dahliae ◽  
Sowing Date ◽  
The Other ◽  
Meligethes Aeneus ◽  
Sowing Time ◽  
Sowing Dates ◽  
Crop Density ◽  
Rape Seedlings ◽  
Spring Rape

The field experiments were conducted at the Experimental Station of Aleksandras Stulginskis University in 2015–2017. The aim of the experiment was to evaluate the influence of sowing time on spreading of pests and diseases in spring oilseed rape crop. The first sowing occurred when soil reached physical maturity, the other sowing dates were every 5 days in 2015–2016 and every 7 days in 2017. In 2015, the sowing time did not have a significant effect on the distribution of Alternaria brassicae. Meteorological conditions strongly influenced the severity of the disease. The sowing date had a significant influence on the distribution of Verticillium dahliae: in the spring rape crop sown in May, the stems were damaged by 6.4%, less compared to the crop sown in April. In 2016–2017, the rape seedlings in the plots of the latest sowing were significantly more damaged compared with those of earlier sowing dates. In 2016, spreading of Verticillium longisporum significantly increased by 3.7 times in the crop of spring rape sown on 10 May compared to other sowing dates. In 2017, the spreading of Verticillium dahliae in spring rape crops was more influenced by a colder than usual vegetation period and an abundant rainfall than the sowing time. In 2015, the intensity of Phyllotreta spp. damage in the rape seedling period (BBCH 10-19) significantly increased by 2.7 times with the sowing date from 30 April to 20 May. The spreading of Meligethes aeneus was the least in the spring oilseed rape sown at the optimal time (30 April and 5 May). In 2016–2017, Phyllotreta spp. were more intensively spread in the crops sown in April, and rape seedlings were significantly more damaged. In 2016, Meligethes aeneus were most widely spread in the spring rape crop of the earliest sowing (4 October). A significant decrease in the number of pests was detected in the rape crops sown in May compared to that sown in April. In 2017, the highest number of Meligethes aeneus was evaluated in the rape crop sown on 2 June, significantly by 3.9 times more compared with that in the earlier sown crop and by 2.9 times in the crop sown one week later. It is believed that the other generation of Meligethes aeneus from winter rape crops went to the spring rape crops. In 2016, there was a very strong statistically significant correlation between the sum of positive temperatures for the 10-day period up to the sowing of rapeseed and the prevalence of Phyllotreta spp. in crops: r = 0.98, P ≤ 0.05, and the damage intensity of rape seedlings by Phyllotreta spp. of (BBCH 10-19): r = 0.92, P ≤ 0.05. The warmer the weather was before rape sowing, the more active Phyllotreta spp. were. In 2017, strong correlations were established between the number of Phyllotreta spp. and the intensity of crop damage by Phyllotreta spp. and the crop density 3 days after the emergence: r = –0.82, P ≤ 0.05; r = –0.89, P ≤ 0.01, and 7 days after the emergence of spring rape: r = –0.81, P ≤ 0.05; r = –0.88, P ≤ 0.01.

scholarly journals Something in the air? The impact of volatiles on mollusc attack of oilseed rape seedlings

2016 ◽  
Vol 117 (6) ◽  
pp. 1073-1082 ◽  
Author(s):  
Roger W. R. Shannon ◽  
Anne-Emmanuelle Félix ◽  
Guy M. Poppy ◽  
Philip L. Newland ◽  
Nicole M. van Dam ◽  
...  
Keyword(s):  
Oilseed Rape ◽  
The Impact ◽  
Rape Seedlings
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