Institute of Genetics,
Physiology and Plant Protection

Laboratory Plant Nutrition and Water Regime

Head: Anastasia STEFIRTA,  Dr.Sci., professor
Laboratory staff:  20 researchers, including: 1 academicien, 2 professor, 2PhD in biology, 1PhD in agriculture; 8 dr.in biology, 1dr in agriculture

Research directions:

Elucidation of coordination and integration capacity of plant functions in unfavorable conditions, aiming the scientific argumentation of possibility of adaptive processes induction and the productive potential implementation.

Relevant results:

The problem of plant resistance to unfavorable factors is considered a maximum and perpetual value both for modern biological science and for the future of mankind, and it is the focus of scientists worldwide. So far there is no single concept that would explain the cause of destruction or plant tolerance to adverse stressful conditions. Different plant species, varieties, hybrids with the different productivity and resistance potentials were served as the research objects.

The experiments were conducted under laboratory, greenhouse and field conditions in frames of the experimental polyfactorial system with controlled soil water content, temperature, nutrition and salinization parameters. Plants were subject to stresses at critical phases of their development. Physiological, biochemical and morphogenetic analyses were performed on roots, steams, different leaves’ metameric, generative organs in the stress-factor dynamics, inclusive and the residual effects after improving of environment.

It was established that plant resistance to adverse conditions was dependent on the ability to coordinate and integrate the functions at the organism level. Water and mineral nutrients were one of the main factors of physiological processes integration and coordination at the cellular, organ and organism levels under unfavorable  conditions of humidity, temperature and nutrient imbalance.

The reason of the functional equilibrium disruption at drought conditions was the reduction/inhibition of water and plant hormones transports, disturbed water homeostasis, especially in roots and inflorescences, decreased enzymatic antioxidant protection. There was demonstrated the involvement of microelements and microbial metabolites on the enzymatic activity in rhizosphere and in the stabilization of plant functions under nutrient imbalance. There was elaborated the concept regarding the coordination and integration of functions as the premise of plant resistance under unfavorable conditions. The results served as the scientific basis for methods of increasing plant productivity and resistance.

Business proposals:

• Procedeu de cultivare a sfeclei de zahăr. s20120022 din 2012.02.01.  Brevet de invenţie MD 510. 2012-11-30.
• Procedeu de cultivare a plantelor. S20120025 din 2012.02.03. MD 511.  2012-11-30.
• Procedeu de tratare a seminţelor viţei de vie înainte de semănat. s20120006 din 2012.01.06. MD 508, 2012 11.30.
• Procedeu de tratare a semințelor de sfeclă de zahăr. s20120077 din 2012.05.23. Brevet de invenţie. MD 565. 2013-07-31.
• Procedeu de cultivare a butaşilor de viţă de vie. s20120136 din 2012.10.03. Brevet de invenţie MD652. 2014.02.28.
• Dispozitiv electronic de măsurare a rezistenței electrice a plantelor. s20130012 din 2013.01.25. Brevet de invenţie MD 683.2014.04.30.
• Procedeu de tratare a seminţelor de sfeclă de zahăr. s20130037 din 2013.02.28. Brevet de invenţie MD693. 2014.06.30.
• Procedeu de cultivare a plantelor de Phaseolus vulgaris L. s20130104 din 2013.06.07.   Brevet de invenţie MD 729.2014.09.30.
• Azotat de trans-is(dimetilglioximato) bis(nicotinamid)cobalt(III)dihidrat – substanță cu proprietăți antioxidative. a20130033 din 2013.05.27.  Brevet de invenţie MD 4274. 2014.09.30.
• Procedeu de tratare a plantelor de viţă de vie. s20130188 din 2013.11.07. Brevet de invenţie MD 767. 2014.