Труды сотрудников ИЛ им. В.Н. Сукачева СО РАН

[Text] / K. Y. Biel [et al.] // Protoplasma. - 2010. - Vol. 245, Is. 01.04.2013. - P49-73, DOI 10.1007/s00709-010-0135-7. - Cited References: 136. - Supported in part by the Competitive Research Grants Office, U.S. Department of Agriculture (Grant Nos. 96-35100-3167 and 98-35100-6106 to JNN). IRF and GNN were supported by Sr. Fulbright Scholar Awards. Thanks to Professors Andrew A. Benson (Scripps Institute of Oceanography, La Jolla, California, USA), Edwin A. Cossins (University of Alberta, Edmonton, Canada), and William H. Outlaw, Jr. (Florida State University, Tallahassee, Florida, USA) for the valuable comments on the manuscript, and to Vincent R. Franceschi (Electron Microscopy Center, Washington State University, Pullman, Washington, USA; deceased) for useful discussions about calcium oxalate. Portions of the work were preliminarily reported (Bil' et al. 2003a, b) . - 25. - ISSN 0033-183XРУБ Plant Sciences + Cell Biology

Аннотация: The localization of the key photoreductive and oxidative processes and some stress-protective reactions within leaves of mesophytic C(3) plants were investigated. The role of light in determining the profile of Rubisco, glutamate oxaloacetate transaminase, catalase, fumarase, and cytochrome-c-oxidase across spinach leaves was examined by exposing leaves to illumination on either the adaxial or abaxial leaf surfaces. Oxygen evolution in fresh paradermal leaf sections and CO(2) gas exchange in whole leaves under adaxial or abaxial illumination was also examined. The results showed that the palisade mesophyll is responsible for the midday depression of photosynthesis in spinach leaves. The photosynthetic apparatus was more sensitive to the light environment than the respiratory apparatus. Additionally, examination of the paradermal leaf sections by optical microscopy allowed us to describe two new types of parenchyma in spinach-pirum mesophyll and pillow spongy mesophyll. A hypothesis that oxaloacetate may protect the upper leaf tissue from the destructive influence of active oxygen is presented. The application of mathematical modeling shows that the pattern of enzymatic distribution across leaves abides by the principle of maximal ecological utility. Light regulation of carbon metabolism across leaves is discussed.

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Держатели документа:
[Nishio, John N.] Calif State Univ Chico, Biocompatible Plant Res Inst, Coll Nat Sci, Chico, CA 95929 USA
[Biel, Karl Y.
Fomina, Irina R.
Nazarova, Galina N.] Russian Acad Sci, Inst Basic Biol Problems, Pushchino 142290, Moscow Region, Russia
[Biel, Karl Y.
Fomina, Irina R.] Biosphere Syst Int Fdn, Oro Valley, AZ 85755 USA
[Soukhovolsky, Vladislav G.
Khlebopros, Rem G.] Russian Acad Sci, Int Sci Ctr Organism Extreme States Res, Krasnoyarsk Sci Ctr, Siberian Branch, Krasnoyarsk 660036, Russia
[Soukhovolsky, Vladislav G.] Russian Acad Sci, Inst Forest, Siberian Branch, Krasnoyarsk 660036, Russia
[Khlebopros, Rem G.] Russian Acad Sci, Inst Biophys, Siberian Branch, Krasnoyarsk 660036, Russia

Доп.точки доступа:
Biel, K.Y.; Fomina, I.R.; Nazarova, G.N.; Soukhovolsky, V.G.; Khlebopros, R.G.; Nishio, J.N.

/ L. I. Romanova, I. N. Tret'yakova // Ontogenez. - 2005. - Vol. 36, Is. 2. - С. 128-134 . - ISSN 0475-1450
Аннотация: Studies of microsporogenesis in the Siberian larch growing in Krasnoyarsk and its suburbs have shown that meiosis starts in October. Microsporocytes winter at prophase I (leptoneme, diploneme). Reduction divisions in male generative buds are resumed and terminated in spring, in March. However, in the case of thaws during the autumn-winter period, meiotic division proceeds in the larch buds and this leads to the formation of degrading tetrads and pollen. Hence, the organic quiescence is absent in the larch in winter. It was shown that in the larch growing in the city, meiosis proceed more asynchronously than in the background tree stands. An increase of chromosomal aberrations during the reduction division was noted under the conditions of technogenic pollution.

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Держатели документа:
Siberian State Technological University, pr. Mira 82, Krasnoyarsk, 660049, Russian Federation
Sukachev Institute of Forest, Siberian Branch of the Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Romanova, L.I.; Tret'yakova, I.N.