Role of Glandular Trichomes in the Resistance of Lycopersicon hirsutum f. glabratum to Colorado Potato Beetle (Coleoptera: Chrysomelidae)

1985 ◽  
Vol 78 (3) ◽  
pp. 547-551 ◽  
Author(s):  
G. G. Kennedy ◽  
C. F. Sorenson
Keyword(s):  
Colorado Potato Beetle ◽  
Glandular Trichomes ◽  
Lycopersicon Hirsutum ◽  
Potato Beetle

The Colorado potato beetle in movement

2003 ◽  
Vol 135 (1) ◽  
pp. 1-22 ◽  
Author(s):  
G. Boiteau ◽  
A. Alyokhin ◽  
D.N. Ferro
Keyword(s):  
Colorado Potato Beetle ◽  
Leptinotarsa Decemlineata ◽  
Recent Literature ◽  
Abiotic Factors ◽  
Orientation Process ◽  
Potato Beetle ◽  
Host Habitat ◽  
Subject Areas ◽  
Refuge Areas

AbstractThe recent introduction of the concept of refuge areas for the management of the Colorado potato beetle, Leptinotarsa decemlineata (Say) (Coleoptera : Chrysomelidae), on resistant potato highlighted the existence of important gaps in our knowledge and understanding of this pest's movement within and between habitats. The objective of this review is to synthesize the information available for the benefit of crop managers and to identify subject areas in need of additional research. A traditional, somewhat encyclopedic, review of the old and recent literature on research methods, basics of flight and walking, as well as abiotic and biotic conditions for dispersal, revealed a considerable volume of information accumulated since the early 1900s. There is a consensus on the role of abiotic factors on flight and walking, but a better understanding of the biotic factors will be required before the variability of the dispersal response can be fully explained or predicted. Cybernetic models of orientation proposed in the literature were pulled together into a schematic representation of the orientation process in walking L. decemlineata. The model begins the integration of the different conditions and underlying suggested mechanisms responsible for the orientation of the walking beetle. There is remarkably little information on the orientation of potato beetles during flight. Finally, the seasonality of walking and flight dispersal is reviewed in relation to the host habitat and overwintering sites.

scholarly journals Possible molecular genetic mechanisms of resistance in populations of the Colorado potato beetle

2020 ◽  
Vol 18 ◽  
pp. 00004
Author(s):  
Galina Benkovskaya
Keyword(s):  
Insecticide Resistance ◽  
Colorado Potato Beetle ◽  
Molecular Genetic ◽  
Membrane Channels ◽  
Mechanisms Of Resistance ◽  
Local Populations ◽  
Genetic Base ◽  
Potato Beetle ◽  
Genetic Mechanisms

Expansion of the Colorado potato beetle (CPB) in the Eurasia is continuing. At the same time, there is an increase in the level of insecticide resistance in populations of CPB in Russia. Regular detection of individuals resistant to diagnostic doses of insecticides during the last 10 years shows an increase of their prevalence in local populations in Bashkortostan. Genetic base of insecticide resistance in the Colorado potato beetle populations contains both mutations in the genes of target receptors or membrane channels, as well as changes in expression of these and many other genes. Role of the diapause proteins capable to bind xenobiotics and withdraw them from metabolism is discussed.

scholarly journals Susceptibility Level of the Colorado Potato Beetle (Leptinotarsa Decemlineata Say) to Chlorpyrifos and Acetamiprid in Poland and Resistance Mechanisms of the Pest to Chlorpyrifos

2011 ◽  
Vol 51 (3) ◽  
pp. 279-284 ◽  
Author(s):  
Paweł Węgorek ◽  
Joanna Zamojska ◽  
Marek Mrówczyński
Keyword(s):  
Colorado Potato Beetle ◽  
Oxidative Metabolism ◽  
Leptinotarsa Decemlineata ◽  
Essential Role ◽  
Resistance Mechanisms ◽  
Glutathione Transferases ◽  
Main Role ◽  
Potato Beetle ◽  
Leptinotarsa Decemlineata Say

Susceptibility Level of the Colorado Potato Beetle (Leptinotarsa DecemlineataSay) to Chlorpyrifos and Acetamiprid in Poland and Resistance Mechanisms of the Pest to ChlorpyrifosNowadays, neonicotinoids play an essential role in the control of the Colorado potato beetle (CPB) in Poland. Taking into consideration that CPB shows some resistance to pyrethroids and the main role of oxidative metabolism in this resistance, research was conducted to estimate CPB susceptibility level to chlorpyrifos and acetamiprid. The results pointed to a lack of CPB resistance to acetamiprid and a weak susceptibility level to chlorpyrifos by the CPB. For this reason, the second part of the experiment was aimed at detecting the resistance mechanisms of the CPB to chlorpyrifos. Results showed that none of the tested enzyme groups (oxidases, esterases and glutathione transferases) are the reason for CPB resistance to chlorpyrifos. The experiments revealed an increase in the beetles survival after adding oxidative enzyme blocker to chlorpyrifos.

scholarly journals Field Evaluation of Natural, Engineered, and Combined Resistance Mechanisms in Potato for Control of Colorado Potato Beetle

2003 ◽  
Vol 128 (2) ◽  
pp. 219-224 ◽  
Author(s):  
Joseph J. Coombs ◽  
David S Douches ◽  
Wenbin Li ◽  
Edward J. Grafius ◽  
Walter L. Pett
Keyword(s):  
Host Plant ◽  
Plant Resistance ◽  
Colorado Potato Beetle ◽  
Host Plant Resistance ◽  
Glandular Trichomes ◽  
Glandular Trichome ◽  
Resistance Mechanisms ◽  
Potato Beetle ◽  
Transgenic Lines ◽  
Number Of Individuals

The colorado potato beetle, Leptinotarsa decemlineata Say (Coleoptera: Chrysomelidae), is the leading insect pest of potato (Solanum tuberosum L.) in northern latitudes. Host plant resistance has the potential use in an integrated pest management program for control of colorado potato beetle. During the 1998 and 1999 seasons, field studies were conducted to compare natural (leptine glycoalkaloids and glandular trichomes), engineered (Bt-cry3A and Bt-cry5 transgenic potato lines), and combined (Bt-cry5+glandular trichomes) plant resistance mechanisms of potato for control of colorado potato beetle. Nine different potato clones representing five different host plant resistance mechanisms were evaluated under natural colorado potato beetle infestation at the Montcalm Research Farm in Entrican, Michigan. The Bt-cry3A transgenic lines, the high leptine line (USDA8380-1), and the high foliar glycoalkaloid line (ND5873-15) were most effective for controlling defoliation by colorado potato beetle adults and larvae. The Bt-cry5 line (SPc5-G2) was not as effective as the Bt-cry3A transgenic lines ('Russet Burbank Newleaf,' RBN15, and YGc3.1). The glandular trichome (NYL235-4) and Bt-cry5+glandular trichome lines proved to be ineffective. Significant rank correlations for the potato lines between the two years were observed for egg masses, second and third instar, and fourth instar seasonal cumulative mean number of individuals per plant, and defoliation. Egg mass and first instar seasonal cumulative mean number of individuals per plant were not strong indicators of host plant resistance in contrast to second and third instars or adults. Based on these results, the Bt-cry3A transgenic lines, the high leptine line, and the high total glycoalkaloid line are effective host plant resistance mechanisms for control of colorado potato beetle.

scholarly journals Combining Natural and Engineered Host Plant Resistance Mechanisms in Potato for Colorado Potato Beetle: Choice and No-choice Field Studies

2005 ◽  
Vol 130 (6) ◽  
pp. 857-864 ◽  
Author(s):  
Joseph J. Coombs ◽  
David S. Douches ◽  
Susannah G. Cooper ◽  
Edward J. Grafius ◽  
Walter L. Pett ◽  
...  
Keyword(s):  
Host Plant ◽  
Plant Resistance ◽  
Colorado Potato Beetle ◽  
Host Plant Resistance ◽  
Glandular Trichomes ◽  
Field Studies ◽  
Resistance Mechanisms ◽  
Field Cage ◽  
Potato Beetle ◽  
Transgenic Lines

Colorado potato beetle (Leptinotarsa decemlineata Say) is the leading insect pest of potato (Solanum tuberosum L.) in northern latitudes. Host plant resistance is an important tool in an integrated pest management program for controlling insect pests. Field studies were conducted to compare natural host plant resistance mechanisms (glandular trichomes and Solanum chacoense Bitter-derived resistance), engineered [Bacillus thuringiensis (Bt) Berliner Bt-cry3A], and combined (glandular trichomes + Bt-cry3A and S. chacoense-derived resistance + Bt-cry3A transgenic potato lines) sources of resistance for control of colorado potato beetle. Six different potato clones representing five different host plant resistance mechanisms were evaluated for 2 years in a field situation under natural colorado potato beetle pressure in Michigan and New York, and in a no-choice field cage study in Michigan. In the field studies, the S. chacoense-derived resistance line, Bt-cry3A transgenic, and combined resistance lines were effective in controlling defoliation by colorado potato beetle adults and larvae. Effectively no feeding was observed in the Bt-cry3A transgenic lines. The glandular trichome line suffered less defoliation than the susceptible control, but had greater defoliation than the Bt-cry3A transgenic lines and the S. chacoense-derived resistance line. In the no-choice cage study, the Bt-cry3A transgenic lines and the combined resistance lines were effective in controlling feeding by colorado potato beetle adults and larvae with no defoliation observed. The S. chacoense-derived resistance line and the glandular trichome line suffered less defoliation than the susceptible control. Based on the results of the field trials and no-choice field cage studies, these host plant resistance mechanisms could be used to develop potato varieties for use in a resistance management program for control of colorado potato beetle.

Role of vision throughout the flight initiation sequence of the Colorado potato beetle

2005 ◽  
Vol 137 (4) ◽  
pp. 420-427
Author(s):  
Gilles Boiteau
Keyword(s):  
Colorado Potato Beetle ◽  
Leptinotarsa Decemlineata ◽  
Critical Role ◽  
Successful Completion ◽  
Flight Chamber ◽  
Potato Beetle ◽  
Key Factor ◽  
Initiation Sequence ◽  
Flight Initiation

AbstractThe role of vision in the flight initiation sequence of the Colorado potato beetle, Leptinotarsa decemlineata (Say) (Coleoptera: Chrysomelidae), was assessed by comparing the behavioral sequences and frequencies of takeoffs of untethered and tethered beetles with and without vision. Results showed that vision plays a critical role in the successful completion of the launch and the maintenance of lift for the adult Colorado potato beetle. The sequence was interrupted immediately before or during the lifting of the mesothoracic legs or before the launch for most blind beetles. Liftoffs of untethered beetles over a 1-h period in a flight chamber were reduced significantly, by 77%, in blind beetles compared with normal beetles. In addition, the preponderance of upward (dispersal) flights following successful liftoffs of normal beetles was replaced by a preponderance of downward (short) flights for blind beetles. Blind beetles that did not have to launch themselves because they were tethered initiated flight as frequently as tethered normal Colorado potato beetles. The duration and repeatability of flights initiated by tethered blind Colorado potato beetles were also similar to those of flights initiated by tethered normal Colorado potato beetles in a stationary environment. Together, the results of the tests with untethered and tethered beetles indicate that vision is a key factor during flight launching and for flight continuation.

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