Phospholipids of the cambial zone ofLarix sibirica

Rubchevskaya, L. P.; Ignatova, E. V.; Repyakh, S. M.

doi:10.1007/bf02329607

Chem Nat Compd

1998

DOI: 10.1007/bf02329607

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Phospholipids of the cambial zone ofLarix sibirica

L. P. Rubchevskaya¹,

E. V. Ignatova²,

S. M. Repyakh³

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2009

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“…A review of the literature showed that existing information on the fractional composition of lipids from various organs and tissues of conifers has been obtained mainly from the study of samples with different compositions and anatomical structures (needles, whole buds, bark, roots, trunk wood, runners, cambial zone, etc.) [9][10][11][12][13][14]. In our instance, the study of bud meristem allowed all specifics of the lipid composition and its changes during the yearly cycle to be related only to living bud tissues.…”

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Comparative characteristics of bud meristem lipids from Picea obovata and Pinus sylvestris

Алаудинова

Миронов

2009

Chem Nat Compd

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547.915It was shown that the lipid content of Pinus sylvestris L. was greater than that of Picea obovata L. The difference was 43-45% of total lipids in winter. Polar fractions dominated the lipid composition of both conifers. The phospholipid content was greater than the glycolipid content in winter. A significant amount of glycolipids that was equal to that of phospholipids was present simultaneously in meristem of wintering pine buds. Swelling buds of both species showed in spring an elevated content of glycolipids.The main portion of the forestry resources of Krasnoyarsk Krai, which consists of about 61.3 million hectares, is conifer (boreal) forests. The pine family (Pinaceae) stands out in this territory with respect to the number of species and expanse of distribution. The output of conifer biomass production is determined to a large extent by the rate of biosynthesis of plant cell components. Lipids are one of the principal classes of biomolecules and play a main role in these processes. The direction of lipid exchange can to a certain degree be inferred from the change of lipid content and composition in plant organs and tissues in different seasons. Herein we present results from a study of structural and chemical changes of meristem cells of frost-resistant conifer species during the yearly cycle. In particular, we studied the seasonal dynamics of the lipid composition and content of bud meristem tissues (needle and runner embryonic tissues) of Siberian spruce (Picea obovata L.) and common pine (Pinus sylvestris L.).Seasonal temperature variations drive the rhythm of exchange processes occurring under Central Siberian climatic conditions in the histogenetic centers of conifers. A study of the dynamics of the total lipid (TL) content in meristem from the time that vegetative runners stopped growing (August) until the emergence of young needles (May) showed ( Fig. 1) that the amount of TL in the studied species varied considerably during the year. The difference between species in some periods was as much as 100%.

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confidence: 99%

Comparative characteristics of bud meristem lipids from Picea obovata and Pinus sylvestris

Алаудинова

Миронов

2009

Chem Nat Compd

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Phospholipids of the cambial zone ofLarix sibirica

Cited by 1 publication

References 0 publications

Comparative characteristics of bud meristem lipids from Picea obovata and Pinus sylvestris

Comparative characteristics of bud meristem lipids from Picea obovata and Pinus sylvestris

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