scholarly journals Selection of Eggplant Cultivars and Combination with Graft Cultivation for Effective Biological Control of Vascular Wilt Diseases Using a Phenotypic Conversion Mutant of Ralstonia solanacearum

Author(s):  
Hiroki Nakahara ◽  
Akihiro Maehara ◽  
Taro Mori ◽  
Naotaka Matsuzoe
1994 ◽  
Vol 10 (1) ◽  
pp. 47-52 ◽  
Author(s):  
Norma V. Labarthe

This study is concerned with aspects of the relationship between ticks and their hosts that have a bearing on biological control of tick populations. It proposes control methods based on a program that would combine development of an effective vaccine with genetic selection of hosts.


2019 ◽  
Vol 2 (3) ◽  
pp. 89-96 ◽  
Author(s):  
Rachmad Saputra ◽  
Triwidodo Arwiyanto ◽  
Arif Wibowo

Streptomyces sp. bacteria have the potential to produce antibiotic compounds, which are one of the mechanisms that are widely used in biological control. However, in general, biological control mechanisms also occur through competition, cell wall degradation and induced resistance. This study was aimed to determine the physiological, biochemical and molecular characteristics of two isolates of Streptomyces sp. (S-4 and S16 isolates) isolated from the tomatoes roots, and to find out their ability to control Ralstonia solanacearum, which causes bacterial wilt disease on a wide range of hosts. The results showed both Streptomyces sp. isolates had several different physiological and biochemical characteristics and had a different ability to inhibit R. solanacearum in vitro. Streptomyces sp. S-16 isolate had a high similarity with Streptomyces diastaticus subsp. ardesiacus strain NRRL B-1773T based on the molecular identification results. Further research needs to be done to see the potential inhibition of the two Streptomyces isolates in inhibiting the development of bacterial wilt disease in tomato plants caused by R. solanacearum.


2017 ◽  
Vol 12 (1) ◽  
pp. 42-49 ◽  
Author(s):  
Silva Oliveira Wagner ◽  
Lima Coelho Iwanne ◽  
Rafaella Sousa Oliveira Jessica ◽  
Camila Barros Silva Leite Maria ◽  
Montenegro Stamford Arnaud Thatiana ◽  
...  

1962 ◽  
Vol 53 (2) ◽  
pp. 241-256 ◽  
Author(s):  
E. S. Brown

A number of observations were made on parasites of certain Pentatomoids (sunn pest) attacking wheat in Middle East countries, during the course of other work on these pests. The principal host species studied were Eurygaster integriceps Put., E. maura (L.) and Aelia rostrata Boh. The data concern both Dipterous (Tachinid) endoparasites of the adult bugs, and also Hymenopterous (Scelionid) egg-parasites; the observations were made principally in central Turkey, and in the Varamine district of Iran. A few observations on predators were made also.The data concerning Tachinids consist of host records for six species of parasites. In no case observed by the author did these parasites appear to be of great importance in reducing the numbers of sunn pest; the same is true of the few instances of predators recorded.Observations were made on six species of Scelionid egg-parasites (five species of Asolcus and one of Hadronotus), five of which were bred from eggs of four species of Pentatomoid hosts collected in the field. The species concerning which the most comprehensive data were obtained were Asolcus rufiventris (Mayr), A. semistriatus (Nees) and A. vassilievi (Mayr). Egg-parasites are well known to be more efficacious in reducing sunn-pest populations, and A. semistriatus has been extensively used in Iran as a biological control agent. The data obtained enabled some ideas which are of importance for the use of egg-parasites in biological control to be formed and discussed. These concern principally (a) the susceptibilities of different hosts to parasitisation; (b) host selection by parasites; (c) the selection of a species of parasite most suitable for biological control in a particular area.


2012 ◽  
Vol 93 (3) ◽  
pp. 1160-1167 ◽  
Author(s):  
Gabriela Montel Mendoza ◽  
Sergio E. Pasteris ◽  
Cesar E. Ale ◽  
María C. Otero ◽  
Marta I. Bühler ◽  
...  

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