Add to favorite
 
123
Subscribe to our Newsletters Subscribe to our Newsletters Get Daily Updates RSS


How to Starch Potatoes
March 14, 2006 15:10

 

Those days, when Europeans had cultivated potatoes for its unusual flowers, have passed long ago. Now people know that the bulb is the most important thing in potatoes. Plant breeders unite their efforts in order to make its bulb bigger and starchier. RAS Plant Physiology Institute scientists use genetic engineering to enhance potatoes. Bacterial gene, introduced to the plant, enlarges starch grains significantly.
 

Potato plant synthesizes sugars, which move to the bulb and transform there to starch. That's the way the plant accumulates and stores nutrients. Potato bulb is a kind of plant storage, which humans break without mercy.
 

The scientists used genes of Agrobacterium - these microorganisms live in soil and infest plants, causing nodulation and knob formation. One of these genes, rolB, appeared to accelerate bulb formation of transgenic plants. It's high time to find out how this gene influences starch synthesis and storage in the bulb.
 

The researchers have inserted bacterial gene into potato plants of "Desire" species. Non-transgenic plants or plants with other inserted genes were used as control. The experiments were performed on plant cuttings, which were grown on artificial medium in absolute darkness at 20 C. Plants were kept in severe conditions in order to eliminate all factors, influencing starch synthesis, except inserted gene. It's impossible to grow normal potatoes without light, but small bulbs, which appear on the cuttings, are enough for research. The experiment lasted six weeks, during which the scientists measured these micro-bulbs and starch grains inside them. Starch, dyed with iodine, is well visible in ordinary light microscope.
 

RolB gene enlarges bulb cell size comparing to control plants. Each of these cells hosts twice as starch grains as control cell does, and each grain is several-fold larger than control grain. Starch grains grow constantly under bacterial gene influence, while control ones stopped growing to the end of the forth week.
 

New technologies often give rise to looking back. For many years physiologists study effects of phytohormones on every process, occurring in plants. Now they know that Agrobacterium genes can act like hormones and are going to proceed with studies of phytohormone influence on starch synthesis. It probably allows making potatoes even more starchy.


Tags: Russian Scientists     

Next Previous

You might also find interesting:

Shall Your Neurons Survive? Blood Glucose Level Can Be Measured Through Blood Pressure Amino Acids Help Maintaining Muscle Tonus Heavy Particles Attack Eyes Russian and Israeli Chemists Know How to Restore Proteins to Life









Comment on our site


RSS   twitter      submit



TAGS:
bus tickets Russia FIFA  Russian army  Magnitsky List  St. Petersburg  Oceanarium  Oleg Tinkov  Russian economy  Kizhi  concerts in Russia  Exhibitions in Moscow  Masterpieces  Russian scientists  Russian business  Yaroslavl   Leningrad Region  de luxe hotels  hotel networks  Russian Arctic  Bunker-42 in Taganka  Suzdal  School of Contemporary Performing Arts  Russian tourism  Russian sport  Exhibitions in Penza  Andrey Zvyagintsev  Russian Avant-Garde  Folk Chorus  Russian mobile operators  Pulkovo Airport   Auktyon  Margarita Goncharova  solar cells  education  Russian airports  Alexander Djikia  Russian science  New Year  Samara  Tver  Russian Cinema  Staraya Russa  Archeological Finds  Russian Railway Tours  Primorye  Moscow  Sergey Malyutin  Central House of Artist  Chukotka  Monuments in Moscow  Mercedes-Benz Fashion Week Russia 


Travel Blogs
Top Traveling Sites