By David C. Sigee
Bringing jointly bacterial constitution and serve as, taxonomy, environmental microbiology, induction and improvement of plant affliction, molecular genetics and affliction keep watch over, Dr Sigee unifies the sector, whilst emphasising interesting advancements in telephone and molecular biology. The ebook is written in a transparent and concise demeanour, illustrated with a number of tables, diagrams and images.
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Additional resources for Bacterial Plant Pathology: Cell and Molecular Aspects
2) of thc total odour blend with a preparative gas chromatograph onto glass capillary tubes (see details in 'i'urlings et a1 1991b). In a first test, a recornbination of all four fractions was compared with different recombinations of only three fractions. One at a time, recombinations were applied o n a strip of paper ( l x 5 c m ) as described by 'rurlings et a1 (199lb) and tested for attractiveness in a fight tunnel. Six 2-dayold experienced wasps (two groups of three) were allowed to fly to a single recombination and we recorded how many of them flew to thc odour source.
We have two species of parasitoid being attracted by the plants. One is the solitary parasitoid, and in general the solitary parasitoids have a limited amount of resources that they use from the host and they generally tend to reduce the growth after parasitization. The gregarious parasitoid, which is also attracted, can be quite different. It is known from polyembryonic parasitoids (which lay one egg in a host, but this then multiplies to as many as a few thousand individuals), that they can stimulate the feeding behaviour of the host by 50% or more, so these are terrible for the plant.
Positive responses often resulted in landings on the paper strip, but a numbcr of females approached a target strip within 3cm without landing on it. Both these behaviours were recorded separately. The results in Fig. 3A show that the most attractive recombinations included fractions 1, 3 and 4. Surprisingly, this was more attractive than a recombination of all fractions. Similar results were obtained with a choice experiment. The principal of this experiment was the same, except that all treatments were placed in the flight tunnel at the samc time.