Institution
International Potato Center
Facility•Lima, Peru•
About: International Potato Center is a facility organization based out in Lima, Peru. It is known for research contribution in the topics: Population & Phytophthora infestans. The organization has 1036 authors who have published 1460 publications receiving 47183 citations.
Papers published on a yearly basis
Papers
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TL;DR: The geographic distribution of wild potatoes (Solanaceae sect. Petota) was analyzed using a database of 6073 georeferenced observations and species richness is highest between 8° and 20° S and around 20° N.
Abstract: The geographic distribution of wild potatoes (Solanaceae sect. Petota) was analyzed using a database of 6073 georeferenced observations. Wild potatoes occur in 16 countries, but 88% of the observations are from Argentina, Bolivia, Mexico, and Peru. Most species are rare and narrowly endemic: for 77 species the largest distance between two observations of the same species is <100 km. Peru has the highest number of species (93), followed by Bolivia (39). A grid of 50 × 50 km cells and a circular neighborhood with a radius of 50 km to assign points to grid cells was used to map species richness. High species richness occurs in northern Argentina, central Bolivia, central Ecuador, central Mexico, and south and north-central Peru. The highest number of species in a grid cell (22) occurs in southern Peru. To include all species at least once, 59 grid cells need to be selected (out of 1317 cells with observations). Wild potatoes occur between 38° N and 41° S, with more species in the southern hemisphere. Species richness is highest between 8° and 20° S and around 20° N. Wild potatoes typically occur between 2000 and 4000 m altitude.
323 citations
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TL;DR: The key challenge from a routine testing lab perspective will not be one of investment in platforms-which could even be outsourced to commercial sequencing services-but one of having the skills and expertise to analyse the large datasets generated and their subsequent interpretation.
320 citations
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TL;DR: It is concluded that sequence exchange occurs repeatedly between genetically unlinked disease resistance genes through a process of gene conversion.
Abstract: Rx2 confers resistance against potato virus X (PVX). To clone Rx2, we developed a system based on Agrobacterium-mediated transient expression of candidate R genes in transgenic tobacco leaves expressing the PVX coat protein elicitor of Rx2-mediated resistance. Using this system, a potato gene eliciting HR specifically in the presence of the elicitor was identified. Based on genetical and functional analysis, it is concluded that the cloned gene is Rx2. The transient expression system is potentially adaptable to cloning of any other resistance gene. The Rx2 locus is on chromosome V of potato and the encoded protein is highly similar to the products of Rx1 and Rxh1 encoded on potato chromosome XII. Rxh1 has been shown elsewhere to encode a potato cyst nematode resistance gene Gpa2. All three proteins are in the leucine zipper-nucleotide binding site-leucine rich repeat class of resistance gene products. Rx1 and Rx2 are functionally identical and are almost identical in the C terminal region consistent with a role of the leucine rich repeats in recognition of the PVX coat protein. In the N terminal, half there are some regions where the Rx1 and Rx2 proteins are more similar to each other than to the Rxh1 protein. However, in other regions these proteins are more similar to Rxh1 than to each other. Based on this mosaic pattern of sequence similarity, we conclude that sequence exchange occurs repeatedly between genetically unlinked disease resistance genes through a process of gene conversion.
319 citations
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TL;DR: A model that outlines an alternative approach to solving farm-level technological problems and stresses that applied research must begin and end with the farmer is presented.
316 citations
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TL;DR: The evolutionary processes that have shaped the complex and fluid genomes of the large RNA viruses might be similar to those that have been involved in evolution of genomic complexity in other divisions of life.
316 citations
Authors
Showing all 1040 results
Name | H-index | Papers | Citations |
---|---|---|---|
Jari P. T. Valkonen | 64 | 328 | 12936 |
Anthony Bebbington | 57 | 247 | 13362 |
Sven Wunder | 57 | 191 | 19645 |
Donald C. Cole | 52 | 272 | 10626 |
Robert J. Hijmans | 50 | 131 | 40315 |
Josef Glössl | 49 | 97 | 7358 |
Roger A. C. Jones | 49 | 325 | 9217 |
Rebecca Nelson | 49 | 152 | 8388 |
Paul Winters | 47 | 221 | 6916 |
Laura F. Salazar | 46 | 175 | 6692 |
M. Monica Giusti | 42 | 140 | 7156 |
Karen A. Garrett | 41 | 155 | 6182 |
Sven-Erik Jacobsen | 39 | 92 | 5869 |
David J. Midmore | 36 | 209 | 4077 |
Luis E. Rodriguez-Saona | 36 | 131 | 4719 |