Plant Protection Science, 2016 (vol. 52), issue 4

INDEX OF VOLUME 52 (2016) - AUTHORS INDEX - AUTHORS INSTITUTIONS INDEXIndex

editors

Plant Protect. Sci., 2016, 52(4):1-6 | DOI: 10.17221/9203-PPS  

Extracellular ATP: a potential molecule regulating the defence response of plants to biotic stresses - a reviewReview

Lingyun Jia, Jingyue Bai, Dongdong Guan, Kun Sun, Qingsong Jiao, Hanqing Feng

Plant Protect. Sci., 2016, 52(4):221-228 | DOI: 10.17221/128/2015-PPS  

Although adenosine 5'-triphosphate (ATP) is commonly considered as an intracellular energy currency molecule, animal, plant, and microbial cells can secrete ATP from the cytosol into the extracellular matrix. In plant cells, extracellular ATP (eATP) is found to play important roles in regulating several physiological processes, such as cell growth, development, and death. Interestingly, recent studies suggest that eATP could be a potential molecule required for the regulation of the defence responses of plants to pathogen infection and herbivore attack. This review article summarises the preliminary studies that have been conducted regarding the possible...

History, presence and perspective of using plant extracts as commercial botanical insecticides and farm products for protection against insects - a reviewReview

Roman PAVELA

Plant Protect. Sci., 2016, 52(4):229-241 | DOI: 10.17221/31/2016-PPS  

Botanical insecticides keep attracting more attention from environmental and small farmers worldwide as they are considered as a suitable alternative to synthetic insecticides. The use of secondary metabolites in a defensive manner isolated from plants is a tradition more than 3000 years old. However, despite current intensive research, the assortment of suitable commercial products is very limited and insufficient in view of the global rise in the demand for biopesticides. Farm products as well as new basic substances offer an important perspective of being widely used in the protection against harmful insects due to their multiple undoubted benefits....

Postulation of seedling stem rust resistance genes of Yunnan wheat cultivars in ChinaOriginal Paper

Tian-ya LI, Xian-xin WU, Xiao-feng XU, Wan-lin WANG, Yuan-yin CAO

Plant Protect. Sci., 2016, 52(4):242-249 | DOI: 10.17221/137/2015-PPS  

To determine stem rust resistance genes of wheat varieties in Yunnan province, 11 Chinese strains of Puccinia graminis f.sp. tritici with different virulence and 1 artificial mutant strain were used in 110 wheat varieties. The results indicated that among the 45 Sr genes, Sr31, Sr5, SrTmp, Sr30, Sr36, Sr8a, Sr11, Sr24, Sr29, Sr34, Sr9e, Sr26, Sr38, Sr47, and SrTt3 were characterised in 55 wheat varieties singly or in combination. Sr5, Sr31, SrTmp, Sr36, and Sr30 were contained in 17, 16, 5, 5, and 3 cultivars, respectively. Six cultivars contained Sr24 and/or Sr34. Three plant materials likely contained one or more of Sr8a, Sr11, Sr34, and Sr23 genes...

First confirmed report on Fusarium sporotrichioides on Pinus ponderosa var. jeffreyi in SlovakiaShort Communication

Helena IVANOVÁ, Ľudmila HREHOVÁ, Peter PRISTAŠ

Plant Protect. Sci., 2016, 52(4):250-253 | DOI: 10.17221/66/2016-PPS  

During 2014-2015, samples from ten 20-25 years old pine (Pinus ponderosa var. jeffreyi) trees showing wilt symptoms were collected from the Arborétum Mlyňany park. A disease was observed on 20% of the trees. The first symptoms are wilting, stunting, chlorosis, and discolouration of needles, which turned yellow on affected twigs, then red and finally they fell off. Isolations of the pathogen were done from the discoloured tissues of needles (twenty samples from each tree) on Potato Dextrose Agar. Colonies of the fungus (3-4 Petri dishes from each tree) were initially aerial, white or slightly violet, but with age they became red and...

Length of prematurity period in wheat cultivars determines maximum cereal aphid abundanceOriginal Paper

Martina Trávníčková, Kateřina Pánková, Zdenka Martinková, Alois Honěk

Plant Protect. Sci., 2016, 52(4):254-261 | DOI: 10.17221/3/2016-PPS  

Maximum aphid numbers on wheat are positively related to the length of the period elapsed from immigration to the population peak. We predicted that maximum abundances on late maturing cultivars would be greater than on early ones. This was tested using 8 spring wheat cultivars that differed in the length of time to senescence. In a 4-year experiment, numbers of aphids were checked at weekly intervals. Maximum abundances on late-maturing cultivars were significantly greater than those on early cultivars. However, the length of the vegetation period affected maximum abundances less than did the annual variation in aphid abundance. Genetic disposition...

Impact of potato psyllid density and timing of infestation on Zebra chip disease expression in potato plantsOriginal Paper

Feng GAO, Zi-Hua ZHAO, John JIFON, Tong-Xian LIU

Plant Protect. Sci., 2016, 52(4):262-269 | DOI: 10.17221/186/2015-PPS  

The impact of vector density and timing of infestation on potato were investigated. Healthy potato plants at different growth stages (4, 5, and 7 weeks after germination) were exposed separately to four different B. cockerelli densities (0, 5, 20, and 40 psyllids per cage) in field cages and Zebra chip (ZC) symptoms, leaf photosynthetic rates, tuber yield, and total nonstructural carbohydrate accumulation in leaves and tubers of healthy and B. cockerelli-infested plants were monitored. Potato psyllid nymph and egg populations reached a seasonal peak at 6 weeks after the exposure to insect. Younger plants at 4-week growth stage after...

Monitoring infestations of oak forests by Tortrix viridana (Lepidoptera: Tortricidae) using remote sensingOriginal Paper

Leila Gooshbor, Mahtab Pir Bavaghar, Jamil Amanollahi, Hamed Ghobari

Plant Protect. Sci., 2016, 52(4):270-276 | DOI: 10.17221/185/2015-PPS  

We tested the suitability of Landsat images to track defoliation by insect herbivory with focus on the oak leaf roller, Tortrix viridana (Lep.: Tortricidae). Landsat images from the period before (2002) and after the T. viridana infestation (2007, 2014) were compared in oak forests of Zagros in western Iran. The Normalised Difference Vegetation Index (NDVI) was calculated for the test area from Landsat 5, 7, and 8 images. Because the red and near-infrared spectral bands of Landsat 8 OLI sensors are different from the other two, a model for the calibration of Landsat OLI NDVI was developed. The proposed model with a correlation coefficient...

First record of Dendroctonus micans (Kugelann, 1794) on non-native spruces in Slovakia - short communicationShort Communication

Jozef VAKULA, Milan ZÚBRIK, Juraj GALKO, Andrej GUBKA, Andrej KUNCA, Ján PAVLÍK, Christo NIKOLOV

Plant Protect. Sci., 2016, 52(4):277-282 | DOI: 10.17221/60/2016-PPS  

In 2015, we recorded the first attack of the great spruce bark beetle, Dendroctonus micans (Kugelann) (Coleoptera: Curculionidae, Scolytinae) on non-native Picea orientalis (L.) and Picea pungens (Engelmann) in Slovakia. To our knowledge, the occurrence of D. micans on P. orientalis in Central Europe has not been described yet. We found that D. micans preferred P. orientalis over P. pungens and other coniferous trees in urban areas. In laboratory conditions, 352 adults of D. micans emerged and only 1 predator, Rhizophagus grandis (Gyllenhal) (Coleoptera: Monotomidae),...

V. Kůdela: Profese rostlinolékaře: Uvedení do studia rostlinolékařství - Plant Health Science and Management Profession: Introduction in Plant Health Science and Management (in Czech with English summary) - book reviewBook Review

Aleš Lebeda

Plant Protect. Sci., 2016, 52(4):283-284 | DOI: 10.17221/127/2016-PPS