Oleg Kharchuk - Academia.edu (original) (raw)
I wook in biology science since 1968. My first scientific article is published in 1972 (experience in Moscow State University). Since 1975 I work in plant biology.
less
Related Authors
Institute of Russian History, Russian Academy of Sciences
Uploads
Papers by Oleg Kharchuk
The main criterion of the Blue Revolution should be a significant productivity of irrigation wate... more The main criterion of the Blue Revolution should be a significant productivity of irrigation water, several times greater than the productivity of evapotranspiration without irrigation. The main means of such increasing are pH of the irrigation water (~ 6), minimum value (predominantly 0-20 cm) of the calculated layer for the irrigation, low pre-irrigation soil moisture (near wilting point), varieties with an anisohydric type of regulation of water status; under such regime the productivity of irrigation water in the soybean cenosis was 3.0 kg/m3.
АННОТАЦИЯ В вегетационном опыте для разных сортов сои установлено положительное влияние внесения... more АННОТАЦИЯ
В вегетационном опыте для разных сортов сои установлено положительное влияние внесения в почву азотфиксирующих бактерий Bradyrhizobium japonicum на семенную продуктивность листовой поверхности. И в контроле и при внесении в почву B. japonicum крупносемянный сорт (Аура) потенциально более продуктивен, чем мелкосемянный сорт (Амелина).
ABSTRACT
In a pot experiment for different soybean varieties obtained the positive effect of soil application of nitrogen-fixing bacteria Bradyrhizobium japonicum on the seed production of the leaf surface. The variety with large seeds (Aura) is found to be potentially more productive than this one with small seeds (Amelina).
В почву сосудов с сеянцами разных сортов сои вносили культуру B. japonicum и измеряли листовую по... more В почву сосудов с сеянцами разных сортов сои вносили культуру B. japonicum и измеряли листовую поверхность растений в сезонной динамике. Установлено, что в результате внесения в почву азотфиксирующих бактерий B. japonicum листовая поверхность растений увеличивалась, в разной степени для разных сортов. На основании данных по динамике ЛП растений и средней массе семян разных сортов сои сделан вывод, что растения крупносемянного сорта сои (Аура) больше отзывчивы на внесение в почву азотфиксирующих бактерий Bradyrhizobium japonicum, чем растения мелкосемянного сорта (Амелина).
Molecular Biology
The complex proton spin-echo decay curve was recorded for human serum albumin (SA) solutions with... more The complex proton spin-echo decay curve was recorded for human serum albumin (SA) solutions with different concentrations in normal and heavy water. The curve included three fast-decaying components for SA, in addition to the slow-decaying component for the water. The total amplitude of these three components roughly corresponded to the number of protons in the SA (with isotopic exchange taken into account); the component ratio remained constant at different concentrations and different temperatures between 4 and 39 degrees. The relatively slow-decaying protein component, which accounted for similar to 10% of the SA protons, was produced by the side chains of the protein. The presence of two other faster-decaying SA components with approximately equal amplitudes indicated that only about half of the remaining protons in the SA macromolecule are incorporated into the comparatively rigid globule, the other half belonging to groups with high conformational lability in aqueous solution. The activation energy for the aqueous component was close to that for pure water, while the activation energies for the protein components were roughly twice as large.
Biokhimii͡a (Moscow, Russia)
Molekuliarnaia biologiia
Alteration of the intermolecular interaction in aqueous solution of human serum albumin (SA) as a... more Alteration of the intermolecular interaction in aqueous solution of human serum albumin (SA) as a result of the increase of ionic strength and pH values brings about the slowing-down of the spin-echo decay curve for protein protons (several times at high SA concentrations). A specific effect of alkaline pH was observed, i.e. the slowing-down of quick component of the spin-echo decay curve. This result taken together with the data on complex spin-echo decay curve, correlation times of protons of different regions is SA and compared with SA isotope exchange data can be explained as a result of the polypeptide chain conformation mobility with frequencies more 10(4) c.p.s. This effect is observed in regions occupying about one half of the SA macromolecule volume.
Conference Presentations by Oleg Kharchuk
The plants isohydric (I) and anisohydric (A) are distinguished by a different ability to maintain... more The plants isohydric (I) and anisohydric (A) are distinguished by a different ability to maintain the water status under changes of environmental conditions.
The traits of plants I and A were studied on two plant species (soybean, tomatoes): varieties, their reciprocal grafting and self-grafted plants. Responses to abiotic stresses are determined by the “root-leaves” interaction; the root is more anisohydric (the total and intracellular water contents are less, the amount of apoplastic water is high) and the leaves are more isohydric (the total and intracellular water contents are higher, the amount of apoplastic water is small). Plants А lose leaf turgor faster, have relatively large seeds (fruits); plants I exhibited significantly lower wilting, have relatively small seeds (fruits).To harvest seed production per unit of leaf area of А plants relatively higher.
The main criterion of the Blue Revolution should be a significant productivity of irrigation wate... more The main criterion of the Blue Revolution should be a significant productivity of irrigation water, several times greater than the productivity of evapotranspiration without irrigation. The main means of such increasing are pH of the irrigation water (~ 6), minimum value (predominantly 0-20 cm) of the calculated layer for the irrigation, low pre-irrigation soil moisture (near wilting point), varieties with an anisohydric type of regulation of water status; under such regime the productivity of irrigation water in the soybean cenosis was 3.0 kg/m3.
АННОТАЦИЯ В вегетационном опыте для разных сортов сои установлено положительное влияние внесения... more АННОТАЦИЯ
В вегетационном опыте для разных сортов сои установлено положительное влияние внесения в почву азотфиксирующих бактерий Bradyrhizobium japonicum на семенную продуктивность листовой поверхности. И в контроле и при внесении в почву B. japonicum крупносемянный сорт (Аура) потенциально более продуктивен, чем мелкосемянный сорт (Амелина).
ABSTRACT
In a pot experiment for different soybean varieties obtained the positive effect of soil application of nitrogen-fixing bacteria Bradyrhizobium japonicum on the seed production of the leaf surface. The variety with large seeds (Aura) is found to be potentially more productive than this one with small seeds (Amelina).
В почву сосудов с сеянцами разных сортов сои вносили культуру B. japonicum и измеряли листовую по... more В почву сосудов с сеянцами разных сортов сои вносили культуру B. japonicum и измеряли листовую поверхность растений в сезонной динамике. Установлено, что в результате внесения в почву азотфиксирующих бактерий B. japonicum листовая поверхность растений увеличивалась, в разной степени для разных сортов. На основании данных по динамике ЛП растений и средней массе семян разных сортов сои сделан вывод, что растения крупносемянного сорта сои (Аура) больше отзывчивы на внесение в почву азотфиксирующих бактерий Bradyrhizobium japonicum, чем растения мелкосемянного сорта (Амелина).
Molecular Biology
The complex proton spin-echo decay curve was recorded for human serum albumin (SA) solutions with... more The complex proton spin-echo decay curve was recorded for human serum albumin (SA) solutions with different concentrations in normal and heavy water. The curve included three fast-decaying components for SA, in addition to the slow-decaying component for the water. The total amplitude of these three components roughly corresponded to the number of protons in the SA (with isotopic exchange taken into account); the component ratio remained constant at different concentrations and different temperatures between 4 and 39 degrees. The relatively slow-decaying protein component, which accounted for similar to 10% of the SA protons, was produced by the side chains of the protein. The presence of two other faster-decaying SA components with approximately equal amplitudes indicated that only about half of the remaining protons in the SA macromolecule are incorporated into the comparatively rigid globule, the other half belonging to groups with high conformational lability in aqueous solution. The activation energy for the aqueous component was close to that for pure water, while the activation energies for the protein components were roughly twice as large.
Biokhimii͡a (Moscow, Russia)
Molekuliarnaia biologiia
Alteration of the intermolecular interaction in aqueous solution of human serum albumin (SA) as a... more Alteration of the intermolecular interaction in aqueous solution of human serum albumin (SA) as a result of the increase of ionic strength and pH values brings about the slowing-down of the spin-echo decay curve for protein protons (several times at high SA concentrations). A specific effect of alkaline pH was observed, i.e. the slowing-down of quick component of the spin-echo decay curve. This result taken together with the data on complex spin-echo decay curve, correlation times of protons of different regions is SA and compared with SA isotope exchange data can be explained as a result of the polypeptide chain conformation mobility with frequencies more 10(4) c.p.s. This effect is observed in regions occupying about one half of the SA macromolecule volume.
The plants isohydric (I) and anisohydric (A) are distinguished by a different ability to maintain... more The plants isohydric (I) and anisohydric (A) are distinguished by a different ability to maintain the water status under changes of environmental conditions.
The traits of plants I and A were studied on two plant species (soybean, tomatoes): varieties, their reciprocal grafting and self-grafted plants. Responses to abiotic stresses are determined by the “root-leaves” interaction; the root is more anisohydric (the total and intracellular water contents are less, the amount of apoplastic water is high) and the leaves are more isohydric (the total and intracellular water contents are higher, the amount of apoplastic water is small). Plants А lose leaf turgor faster, have relatively large seeds (fruits); plants I exhibited significantly lower wilting, have relatively small seeds (fruits).To harvest seed production per unit of leaf area of А plants relatively higher.