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About Institutes Public Relations Technology Transfer Students\International Information Center (Library) Administration
שלח באימייל הדפס
Name: Nurit Firon, Ph.D. (Retiree)
Units: Plant SciencesVegetable and Field Crops
Research Interests / Job description  
Tel:  972-3-9683735
Cell: 050-6220735
Email:  vcfiron@volcani.agri.gov.il
Office location:Field Crops Building, room 111
Address:Department of Vegetable Research,
Institute of Plant Sciences,
A.R.O., The Volcani Center,
P.O.Box 6, Bet Dagan, 50250

Research Scientist

Research Interests / Job description
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.


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.
Updated on: 19/04/20 16:06
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