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Top 5 -yesterday
Top 5 -last week
- Whitefly prevention with liquid nutritional plant enhancer
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- "The number of high-tech greenhouses in Poland has grown significantly in recent years"
- CAN (ON): “We are moving into the strawberry category as a united front"
- "We can produce up to 2.5 times more from the same acreage"
Top 5 -last month
- "The container is essential to determine the quality of the plant"
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October 16, State College
US (PA): Seminar on persistent viruses in peppers
We investigated the evolution of these persistent viruses in different peppers including C. annuum, C. chinense, C. frutescens, C.bacccutum, and C. pubescens. In addition, by using single nucleotide polymorphisms, the pepper, host populations, and phylogenies were analyzed. The endornaviruses phylogeny was congruent with its Capsicum species host. In this study BPEV was limited to C. annuum species, and phylogenies identified two clades that correlated with the host pungency. No C. annuum infected with CFEV 1 was found in this study, but it was recovered from other Capsicum species. Both partitiviruses were detected in cultivated and wild C. annuum. These two partitiviruses showed a remarkably slow evolution rate in comparison with acute RNA viruses.
Finally, some potential beneficial effects of persistent virus were examined. PCV 1 infected Jalapeño plants deterred aphids (Myzus persicae) which is in a stark contrast to insect-plant interactions in acute virus infections. Aphid reproduction on PCV 1 infected plants was more than two fold lower than virus free plants. This study demonstrated a beneficial relationship between PCV 1 and Jalapeño plants by protecting the plants from the vector of acute viruses. In addition, the effect of PCV 1 on the Jalapeño's developmental growth was tested, and PCV 1 showed no significant effect on the developmental growth of Jalapeño plants.
Source: Penn State University
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