Leire Barandalla

• Neiker-Tecnalia Basque Institute for Agricultural Research and Development

Potato (Solanum tuberosum L.) is often considered a water-sensitive crop and its production can be threatened by drought events, making water stress tolerance a trait of increasing interest. In this study, a panel of 144 tetraploid potato genotypes was evaluated for two consecutive years (2019 and 2020) to observe the variation of several physiolog...

Potato (Solanum tuberosum L.) is one of the most important crops worldwide, but due to its sensitivity to drought, its production can be affected by water availability. In this study, the varieties Agria and Zorba were used to determine the expression differences between control and water-stressed plants. For this purpose, they were sequenced by RN...

Due to the effects of climate change, conditions tend to be increasingly extreme, with water availability being one of the main limiting factors in potato production. The objective of this study was to analyze the differential response of physiological and yield components in six potato varieties under water deficit conditions. For this purpose, a...

The oomycete Phytophthora infestans is responsible for the disease known as late blight in potato and tomato. It is the plant pathogen that has caused the greatest impact on humankind so far and, despite all the studies that have been made, it remains the most important in this crop. In Spain during the last years a greater severity of the disease...

The project SPIRIT was conducted in Tanzania, Rwanda, Uganda and Kenya from 2012 to 2016 with the aim of increasing the contribution of agricultural science, technology and innovation to social development in East Africa. The project involved literature research, on-site visits and meetings with farmers, research institutions and stakeholders, info...

Key message: SNPs in candidate genes Pain - 1, InvCD141 (invertases), SSIV (starch synthase), StCDF1 (transcription factor), LapN (leucine aminopeptidase), and cytoplasm type are associated with potato tuber yield, starch content and/or starch yield. Tuber yield (TY), starch content (TSC), and starch yield (TSY) are complex characters of high impo...

Certain potato cultivars such as native potato species (NPS) from the Andes are known to have resistances to different pests and diseases. Some accessions are also interesting from a nutritional and culinary perspective. A collection of 35 NPS and 11 old Spanish accessions were analysed for Streptomyces scabies, Rhizoctonia solani and Globodera ros...

In the Canary Islands, a number of old Andean potato introductions have been maintained by farmers and are cultivated there since the sixteenth century. Genetic resistance is an inexpensive way to control the main pests and diseases of potato and avoids the use of phytochemicals or other costly protective measures. In this study, we have analysed e...

DNA markers have a large potential to improve efficiency and precision of conventional plant breeding programmes based on marker-assisted selection (MAS). In our study, we have evaluated the predictive abilities of the SCAR marker RYSC3 and the CAPS marker GP122564 with regard to the PVY resistance genes Ryadg and Rysto, respectively, and of marker...

A consortium of seven members from six countries has evaluated different properties of a collection of Native Potatoes. The evaluations include resistances to different pest and diseases, nutritional quality and noxious substances, agronomic performance, aptitude for processing and culinary properties. Favourable characteristics were found for all...

Microsatellite markers (SSR) were used to fingerprint a total of 105 local potato cultivars from Spain. A set of 41 cultivars from Tenerife Island, 19 from the island of La Palma, and 45 local varieties from peninsular Spain were analysed. Some of these varieties represent relicts of the early introductions originating from South America and have b...

We have analyzed resistance to Phytophthora infestans in five progenies derived from crosses between wild tuber-bearing potatoes (Solanum okadae, Solanum canacense, Solanum bukasovii, Solanum jamessii and Solanum raphanifolium) and cultivated diploid potato species (Solanum phureja, Solanum goniocalyx and a dihaploid of Solanum tuberosum). Differen...

RESUMEN Un consorcio de siete socios de seis países iberoamericanos ha evaluado diferentes propiedades de una colección de Papas Nativas. Las evaluaciones incluyen resistencias a diferentes plagas y enfermedades, cualidades nutricionales y sustancias perjudiciales, comportamiento agronómico, análisis de la aptitud para el procesado y calidad organo...

All published QTLs and genes for Phytophthora resistance were projected onto the bins of a high-density reference map of potato. Further, a transcriptome map containing around 700 cDNA-AFLP (TDF) markers was anchored to this map. We have analysed cDNA markers which are co-located with these resistance QTLs by cloning, sequencing and by performing h...

Native potato species (NPS) are cultivated potatoes which do not belong to S. tuberosum ssp. tuberosum. They are maintained by the farmers of the Andes for subsistence under harsh environmental conditions where other potatoes cannot compete. Within the huge phenotypic variability between and within these species certain accessions possess resistanc...

Nineteen microsatellite markers were used to fingerprint a set of 19 potato landraces from the island of La Palma (Canary Islands). These landraces represent relicts of early introductions from South America, although most are commonly cultivated by local farmers. The SSR primers detected 62 polymorphisms, 13 of which were present in all landraces....

Shoot apices from six diploid potato genotypes for polyploidisation were treated with oryzalin and colchicine solutions at different concentrations and incubation times. In addition to chimeric plants, diploids, one octoploid and completely ploidy doubled plants (4x) were regenerated in these experiments. Tetraploid plants were obtained for three o...

We have used 19 SSR markers to fingerprint 41 local potato cultivars from 10 locations of Tenerife Island. These varieties represent relicts of the early introductions originating from South America and have been characterised previously morphologically and ecophysiologically. The SSR primers generated a varying degree of polymorphisms. A total of...

Principal activities of the NEIKER-Basque Institute of Agricultural Research contributing to potato research in Spain are described from its origin in 1933 to 2004. In the first period, the genetic crosses begun and the first Spanish variety called “Eminencia” was obtained. From the 1950s (second period) the Station was divided into four sections:...

The shoot-tips of plants of 10 potato cultivars maintained by micropropagation were frozen (ultra rapid freezing) and cryopreserved in liquid nitrogen for three months. The survival rate of the thawed specimens exceeded 50%, and even reached 100% in the case of the cultivar Fénix. The average regeneration rate was between 2.5% and 22.0%, depending...

Starch of potato (Solanum tuberosum) tubers is a renewable resource and an important component of multiple food and non-food products. Optimized starch yield, the product of tuber starch content and tuber yield, is therefore the central selection criterion in breeding programs for starch potatoes. Our study aimed at the detection of diagnostic sing...