Characterization of potato virus Y populations in potato in Israel.

Potato virus Y (PVY) is the most common virus infecting potato worldwide. We analysed potato tuber PVY infections from the major Israeli growing region in 2014-2017. Isolates were characterized by multiplex PCR according to Chikh-Ali et al.

prediction and segregation analysis of putative virus defense genes based on SSR markers in sweet potato F1 progenies of cultivars 'New Kawogo' and 'Resisto'.

In sweet potato, an anti-virus defense mechanism termed reversion has been postulated to lead to virus freedom from once infected plants. The objectives of this study were to identify anti-virus defense genes and evaluate their segregation in progenies. Reference genes from different plant species were used to assemble transcript sequences of each sweet potato defense gene .

Factors influencing reversion from virus infection in sweetpotato.

Viruses limit sweetpotato () production worldwide. Many sweetpotato landraces in East Africa are, however, largely virus-free. Moreover, some plants infected by the prevalent Sweet (SPFMV) may be able to revert to virus-free status.

Digital Photography as a Tool of Research and Documentation in Plant Tissue Culture.

Scientific photography is an important and indispensable tool in plant tissue culture research: photographs should be taken throughout a project for documentation. The aim of photography in plant tissue culture should be to illustrate clearly the differentiation, growth, and developmental stages occurring in vitro. Poor-quality scientific photography in tissue culture research and professional reports results in poor documentation.

A New Israeli Tobamovirus Isolate Infects Tomato Plants Harboring Tm-22 Resistance Genes.

An outbreak of a new disease infecting tomatoes occurred in October-November 2014 at the Ohad village in Southern Israel. Symptomatic plants showed a mosaic pattern on leaves accompanied occasionally by narrowing of leaves and yellow spotted fruit. The disease spread mechanically and rapidly reminiscent of tobamovirus infection.

Stronger sink demand for metabolites supports dominance of the apical bud in etiolated growth.

The potato tuber is a swollen underground stem that can sprout under dark conditions. Sprouting initiates in the tuber apical bud (AP), while lateral buds (LTs) are repressed by apical dominance (AD). Under conditions of lost AD, removal of tuber LTs showed that they partially inhibit AP growth only at the AD stage.

Storage temperature controls the timing of garlic bulb formation via shoot apical meristem termination.

Timing of bulb formation and floral stem induction in garlic is controlled by preplanting storage temperature and shoot apical meristem termination, probably via FLOWERING LOCUS T (FT) genes. Garlic is planted in the winter, undergoes a vegetative stage, then forms bulbs in response to increasing temperature and lengthening photoperiod. Herein, the storage conditions for propagation bulbs are shown to potentially affect future vegetative-stage length and timing of bulb formation.