| molecular diversity of ecologically distinct mal de río cuarto virus isolates based on restriction fragment length polymorphism (rflps) and genome sequence analysis of segments 1, 7, 9 and 10. | viruses of the species mal de río cuarto virus (genus fijivirus, family reoviridae) cause significant economic losses in maize in argentina. genetic changes in the virus genome leading to better adaptation to diverse ecological conditions were postulated that would account for the increasing mrcv variability. the genomic differences between mrcv isolates from four ecologically different areas (río cuarto, rc; pergamino, p; jesús maría, jm; and tafí del valle, tv) were studied. rt-pcr-amplified f ... | 2007 | 17370108 |
| wheat antixenosis, antibiosis, and tolerance to infestation by delphacodes kuscheli (hemiptera: delphacidae), a vector of "mal de río cuarto" in argentina. | "mal de rio cuarto", is the most important virus disease of corn, zea mays l., in argentina. it is caused by the mal de rio cuarto virus (family reoviridae, genus fijivirus. mrcv), which is a persistent virus transmitted by delphacodes kuscheli (fennah 1955) (hemiptera: delphacidae). because corn is not a natural host of d. kuscheli, it has little protection from this pest. in contrast, wheat, triticum aestivum l., is one of the main hosts of this vector and a reservoir of mrcv. the aim of this ... | 2009 | 19886444 |