The plant-specific insert is an approximately 100-residue domain found exclusively within the C-terminal lobe of some plant aspartic proteases. Structurally, this domain is a member of the saposin-like protein family, and is involved in plant pathogen defense as well as vacuolar targeting of the parent protease molecule. Similar to other members of the saposin-like protein family, most notably ...

The requirement for the 17-kDa protein (P17) of Potato leafroll virus (PLRV) in virus movement was investigated in four plant species: potato (Solanum tuberosum), Physalis floridana, Nicotiana benthamiana, and N. clevelandii. Two PLRV P17 mutants were characterized, one that does not translate the P17 and another that expresses a P17 missing the first four amino acids. The P17 mutants were able...

Steroidal glycoalkaloids (SGAs) are specialized metabolites found in members of Solanum species, and also known as toxic substances food crops such tomato (Solanum lycopersicum), potato tuberosum), eggplant melongena). SGA biosynthesis can be divided into two main parts: formation steroidal aglycones, which derived from cholesterol, glycosylation at the C-3 hydroxy group. This review focuses on...

Late blight, caused by the oomycete Phytophthora infestans, is economically most important foliar disease of potato. To assess importance leaf surface, as site first encounter pathogen and host, we performed untargeted profiling liquid chromatography–mass spectrometry surface metabolites susceptible cultivated potato Solanum tuberosum resistant wild species bulbocastanum. Hydroxycinnamic acid a...

The drought stress tolerance of two Solanum tuberosum subsp. andigena landraces, one hybrid (adgxtbr) and Atlantic (S. tuberosum subsp. tuberosum) has been evaluated. Photosynthesis in the Andigena landraces during prolonged drought was maintained significantly longer than in the Tuberosum (Atlantic) line. Among the Andigena landraces, 'Sullu' (SUL) was more drought resistant than 'Negra Ojosa'...

The objectives of this study were to assess the genetic variability of haploids (2n = 2x = 24) extracted from tetraploid Solanum tuberosum through 4x x 2x crosses with Solanum phureja. Molecular and phenotypic analyses were performed to fingerprint the genotypes used and to evaluate their potential use in breeding programs. AFLP analysis revealed the presence of specific bands derived from the ...