209 CONTENTS

Buletinul AŞM. Ştiinţele vieţii. Nr. 2 (314) 2011
Abstracts
UDC: 612.27:612.22
THE CURRENT STATE OF STUDYING NORMOBARIC HYPOXIA FROM THE
PERSPECTIVE OF SANOCREATOLOGY. Caraterzi G.I.// Buletinul Academiei de Ştiinţe
a Moldovei. Ştiinţele vieţii. 2011. No 2 (314), p.61-71.
This paper is focused on a review of the current idea about the in uence of hypoxia on
various body functions and the mechanisms ensuring the adaptation to different duration
hypoxia. Based on the literature and our own data about the in uence of various hypoxia
conditions on the human body, the author has concluded that normobaric hypoxia can be used
in sanocreatology for an additional speci cation of regimens and tests to assess the initial
functional state of the body.
68 references
UDC: 612.332.2+616.8
MEMBRANE DIGESTION OF DISACCHARIDES AND DIPEPTIDES UNDER
CHRONIC STRESS. Sheptitsky V.A., Popanu L.V. // Buletinul Academiei de Ştiinţe a
Moldovei. Ştiinţele vieţii. 2011. No 2 (314), p.72-79.
The characteristic peculiarities of the dynamics of the membrane digestion of disaccharides
(maltose and saccharose as examples) and dipeptides (glycylglycine as an example) and
absorption of their hydrolysis products during chronic immobilization stress have been revealed
using in vivo and in vitro experiments on male rats. The role of α-adrenoreceptors, dopamine
(D 2 ) receptors and Са 2+ -dependent processes in the intestine cell in membrane digestion changes
under chronic stress has been identi ed.
15 references, 1 table, 4 gure.
UDC: 631.4 : 551.5; 635 : 519.8
CHARACTERISTICS OF THERMAL REGIME IN THE SOIL-PLANT-
ATMOSPHERE SYSTEM DURING TOMATO CULTIVATION IN THE OPEN
GROUND. Botnari V.// Buletinul Academiei de Ştiinţe a Moldovei. Ştiinţele vieţii. 2011.
No 2 (314), p.80-89.
The analysis of the microclimatic changes in the elds under seedlingless tomatoes shows
that heat exchange is completed faster in the surface air layer than in soil. A considerable
variability of heat expenses for evaporation, depending on the plant development stage, weather
conditions, and moisture content has been found in the tomato elds. Heat expenditures for
evaporation under irrigated conditions are determined, in general, by the watering rate. Excess
irrigation leads to a marked decrease or even changes in the sign of the turbulent ow.
18 references, 4 tables, 1 gure.
UDC:581.1.03:581.14
PLANT AGING IN DROUGHT CONDITIONS - NATURAL OR PATHOLOGICAL
PROCESS? Ştefîrţă Anastasia, Melenciuc M., Buceaceaia Svetlana. // Buletinul Academiei de
Ştiinţe a Moldovei. Ştiinţele vieţii. 2011. No 2 (314), p.89-98.
A relationship between water status, oxidative stress, the activity of antioxidant enzymes
and the aging process has been studied in various areas of the leaf blade of Zea mays L. plants,
hybrids P458 and H5R515 with different drought resistance potential. The involvement of
free radicals and oxidative stress in induction of plant tissue aging and the role of water in
the prevention of premature aging processes have been found. The effect is realized through
quenching of the reactive oxygen types formed and maintenance of the antioxidant enzyme
activity at high levels. Tissue dehydration during drought results in oxidative stress, which, in
turn, induces a series of events related to the growth interruption, the damage and loss of cell
structure, and the death of plant organs. Tissue dehydration and aging process are accompanied
by a signi cant intensi cation of lipid peroxidation and malondialdehyde content increase, while
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