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Research Interests / Job description |
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A. Solanaceae pollen biology, Pollen temperature-stress-response & thermotolerance. B. Sweetpotato research - focus on mechanisms involved in storage root initiation and development, and root system architechture. |
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CV |
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Research interests 1. Pollen biology Looking into molecular mechanisms involved in microspore maturation in Solanaceae species: - Carbohydrate metabolism and starch accumulation during the late phase of pollen maturation.
- Sucrose & osmolytes accumulation in maturing pollen grains.
- Genes specifically-expressed during microspore maturation.
2. Molecular mechanisms that contribute to high pollen quality under stress conditions The heat-stress-response of developing pollen grains of tomato - Involvement of heat shock proteins (Hsps): small Hsps, Hsp70, Hsp90, Hsp100 family members as well as Hsfs.
- Involvement of reactive oxygen species scavengers: ascorbate peroxidase family members.
- Involvement of osmolytes and plant hormones.
- Involvement of regulatory factors (such as DREB1, a transcription factor shown to regulate cold-responsive genes) in HS signaling.
- We have recently demonstrated that developing pollen posses the capacity for acquired thermotolerance - respective molecular mechanisms are currently studied.
Acquired tolerance of pepper pollen grains to low night temperatures following pre-exposing pepper plants to high day-temperature conditions - Imposing high day temperature (HDT) conditions, prevented the adverse low night temperature (LNT) effects on vegetative as well as reproductive development..
- A correlation between the acquired tolerance effect and sucrose accumulation in mature pollen grains was demonstrated.
- Additional mechanisms are currently studied..
3. Sweetpotato research - Induction of storage root formation: Anatomical and molecular characterization.
- The effect of root system architechture on storage root formation (yield).
- The effect of salty water irrigation on quality & yield.
- Introduction of variety (color, shape) and high-nutrition varieties into Israel.
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Updated on: 19/04/20 16:06 |
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