scholarly journals Suppressed Undergrowth of Siberian Spruce (Picea obovata Ledeb.) in Early Ontogeny: One-Way Ticket or Survival Strategy?

Forests ◽  
2021 ◽  
Vol 12 (7) ◽  
pp. 851
Author(s):  
Gleb Zaitsev ◽  
Alexander Davydychev ◽  
Alexey Kulagin ◽  
Rafak Giniyatullin ◽  
Ruslan Suleymanov ◽  
...  
Keyword(s):  
Forest Canopy ◽  
Growth Dynamics ◽  
Early Ontogeny ◽  
Picea Obovata ◽  
Adverse Conditions ◽  
Siberian Spruce ◽  
Significant Difference ◽  
Absolute Height ◽  
Critical Age ◽  
Generative Stage

The study examined the growth characteristics of the Siberian spruce (Picea obovata Ledeb.) under the canopy of coniferous forests in early ontogeny. We revealed that spruce undergrowth in adverse conditions is suppressed, is slow to grow and has xylorhizomes. The result is a significant difference in height, age and stage of ontogeny that affects the forest’s growth dynamics. The formation of xylorhizomes changes the relative dimensions of the above-ground part and the plant’s absolute height from 42 to 75%, depending on age. We identified two periods of growth intensity (slow and stable) and the critical age for spruce undergrowth to move from one stage of ontogeny to the next. If it does not make the transition, it will die. There are two strategies for developing spruce undergrowth: a “direct” path during rapid growth and a “waiting” path when the plants are suppressed. Such growth pathways in the pre-generative stage of the Siberian spruce’s ontogeny allow the undergrowth, even in a suppressed state, to survive in an adverse environment under the forest canopy.

scholarly journals Metabolomic analysis of extreme freezing tolerance in Siberian spruce (Picea obovata)

2014 ◽  
Vol 204 (3) ◽  
pp. 545-555 ◽  
Author(s):  
Liudmila Angelcheva ◽  
Yogesh Mishra ◽  
Henrik Antti ◽  
Trygve D. Kjellsen ◽  
Christiane Funk ◽  
...  
Keyword(s):  
Freezing Tolerance ◽  
Metabolomic Analysis ◽  
Picea Obovata ◽  
Siberian Spruce

Phytomineral Gel for Seedling Roots Incrustation of Siberian Spruce (Picea obovata Ledeb.)

2019 ◽  
pp. 255-261
Author(s):  
A.L. Vorobyov ◽  
◽  
А.А. Kalachev ◽  
S.V. Zalesov ◽  
◽  
...  
Keyword(s):  
Picea Obovata ◽  
Siberian Spruce ◽  
Seedling Roots

Seasonal growth dynamics of Siberian spruce ectomycorrhiza and sugar content in it

2009 ◽  
Vol 56 (1) ◽  
pp. 104-109
Author(s):  
T. A. Tvorozhnikova ◽  
S. V. Zagirova ◽  
V. V. Punegov
Keyword(s):  
Sugar Content ◽  
Growth Dynamics ◽  
Seasonal Growth ◽  
Siberian Spruce

scholarly journals Monitoring the Effects of Chiral Pharmaceuticals on Aquatic Microorganisms by Metabolic Fingerprinting

2010 ◽  
Vol 76 (7) ◽  
pp. 2075-2085 ◽  
Author(s):  
Emma S. Wharfe ◽  
Catherine L. Winder ◽  
Roger M. Jarvis ◽  
Royston Goodacre
Keyword(s):  
High Performance ◽  
Micrococcus Luteus ◽  
Growth Dynamics ◽  
Aquatic Communities ◽  
Pharmaceutical Ingredients ◽  
Significant Difference ◽  
Aquatic Microorganisms ◽  
Chiral Pharmaceuticals ◽  
Ft Ir ◽  
Ft Ir Spectroscopy

ABSTRACT The effects of the chiral pharmaceuticals atenolol and propranolol on Pseudomonas putida, Pseudomonas aeruginosa, Micrococcus luteus, and Blastomonas natatoria were investigated. The growth dynamics of exposed cultures were monitored using a Bioscreen instrument. In addition, Fourier-transform infrared (FT-IR) spectroscopy with appropriate chemometrics and high-performance liquid chromatography (HPLC) were employed in order to investigate the phenotypic changes and possible degradation of the drugs in exposed cultures. For the majority of the bacteria studied there was not a statistically significant difference in the organism's phenotype when it was exposed to the different enantiomers or mixtures of enantiomers. In contrast, the pseudomonads appeared to respond differently to propranolol, and the two enantiomers had different effects on the cellular phenotype. This implies that there were different metabolic responses in the organisms when they were exposed to the different enantiomers. We suggest that our findings may indicate that there are widespread effects on aquatic communities in which active pharmaceutical ingredients are present.

scholarly journals Geoactive Zones and the Structure of Plant Communities in Connection With New Discoveries in Space Geology

2021 ◽  
Vol 7 (1) ◽  
pp. 33-48
Author(s):  
M. Rogozin
Keyword(s):  
Pinus Sibirica ◽  
Comfort Zone ◽  
Space Images ◽  
Picea Obovata ◽  
Siberian Spruce ◽  
Large Trees ◽  
Ring Structures ◽  
Pinus Sibirica Du Tour ◽  
Siberian Pine ◽  
Geodynamic Activity

The purpose of the work is to find out how plants react to such zones and whether their phytoindication is possible. Two territories of the Perm territory were studied: the Vishersky Nature Reserve and forests near Perm. The research methodology included lineament and geostructurometric analysis of space images and special maps using ring structures discovered on the Earth’s surface by Yu. I. Fivenskii, as well as phyto- and bioindication of small geoactive zones. It was found that in the forests near Perm favorable zones of such zones occupy 1.44% of the territory and within their limits the safety of common pine (Pinus sylvestris L.) is 29–42 times higher. Phytoindication of small geoactive zones of 1.0 and 3.0 m by common pine was shown in the zones of influence of these zones: 0–18 cm — the radius of inhibition with the absence of trees; 19–29 cm — the depression zone with small trees; 30–48 cm — the comfort zone with medium and large trees. Two types of networks formed by zones of 1.0 and 8.0 m in size near Perm (on the plain) and in the reserve (in the mountains) were compared. In the mountains, with high geodynamic activity of territories, the networks are oriented in one direction, while on the plain their orientation is misaligned by 30°. In the reserve, large trees of Siberian spruce (Picea obovata Ledeb.) were located on small geoactive zones of 1.0 and 8.0 m, and trees of Siberian pine (Pinus sibirica Du Tour) — on zones 1.0 and 3.0 m in combination with zones 16, 32 and 55 m. In the subgolets zone, ring structures of perennial plants were also found on the first two types of zones. In addition, along the edges of the swamps, chains of trees were found whose direction coincides with ring faults, and the chains themselves are similar to the structure of small geoactive zones networks, and this fractality requires field verification. The hypothesis recharge of plants within geoactive zones is proposed, which also explains the successful growth of trees on rocks, where the amount of available soil is minimal.

FUNGI COLONIZING CONIFEROUS SEEDLINGS IN FOREST NURSERIES OF MIDDLE SIBERIA

2021 ◽  
Vol 14(63) (1) ◽  
pp. 57-66
Author(s):  
Marina A. SHELLER ◽  
Elena A. SHILKINA ◽  
Aleksey A. IBE ◽  
Tatyana V. SUKHIKH ◽  
Inna E. SAFRONOVA
Keyword(s):  
Pinus Sibirica ◽  
Stone Pine ◽  
Siberian Stone Pine ◽  
Picea Obovata ◽  
Siberian Spruce ◽  
Phialocephala Fortinii ◽  
Phytosanitary Measures ◽  
Forest Nurseries ◽  
Pinus Sibirica Du Tour ◽  
Middle Siberia

The study was carried out in four forest nurseries of Middle Siberia. Affected seedlings of Scots pine (Pinus sylvestris L.), Scots Siberian stone pine (Pinus sibirica Du Tour), and Siberian spruce (Picea obovata Ledeb.) were collected for molecular phytopathological examination. In total, 14 fungal taxa were identified in the needles and roots of the plants. The most dominant among them were Sydowia polyspora (Bref. & Tavel) E., Didymella glomerata (Corda) Qian Chen & L. Cai, Cladosporium herbarum (Pers.) Link, Lophodermium seditiosum Minter, Staley & Millar, Phialocephala fortinii C. J. K. Wang & H. E. Wilcox and Cadophora finlandica (C. J. K. Wang & H. E. Wilcox) T. C. Harr. & McNew. The richness of the fungal taxa was higher in the needles than in the roots of all the tree species studied. The obtained results could be used for implementing more effective phytosanitary measures in the studied nurseries.

scholarly journals Selection Signatures Analysis Reveals Genes Associated with High-Altitude Adaptation in Tibetan Goats from Nagqu, Tibet

Animals ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 1599
Author(s):  
Meilin Jin ◽  
Jian Lu ◽  
Xiaojuan Fei ◽  
Zengkui Lu ◽  
Kai Quan ◽  
...  
Keyword(s):  
High Altitude ◽  
Growth Factor Signaling ◽  
Vascular Endothelial ◽  
Model Based Clustering ◽  
Adverse Conditions ◽  
High Altitude Adaptation ◽  
Significant Difference ◽  
Altitude Adaptation ◽  
Endothelial Growth Factor

Tibetan goat is an ancient breed, which inhabits the adverse conditions of the plateaus in China. To investigate the role of selection in shaping its genomes, we genotyped Tibetan goats (Nagqu Prefecture, above 4500 m) and three lowland populations (Xinjiang goats, Taihang goats and Huanghuai goats). The result of PCA, neighbor-joining (N-J) tree and model-based clustering showed that the genetic structure between the Tibetan goat and the three lowland populations has significant difference. As demonstrated by the di statistic, we found that some genes were related to the high-altitude adaptation of Tibetan goats. Functional analysis revealed that these genes were enriched in the VEGF (vascular endothelial growth factor) signaling pathway and melanoma, suggesting that nine genes (FGF2, EGFR, AKT1, PTEN, MITF, ENPEP, SIRT6, KDR, and CDC42) might have important roles in the high-altitude adaptation of Nagqu Tibetan goats. We also found that the LEPR gene was under the strongest selection (di value = 16.70), and it could induce upregulation of the hypoxic ventilatory response. In addition, five genes (LEPR, LDB1, EGFR, NOX4 and FGF2) with high di values were analyzed using q-PCR. Among them, we found that LEPR, LDB1 and FGF2 exhibited higher expression in the lungs of the Tibetan goats; LEPR, EGFR and LDB1 exhibited higher expression in the hearts of the Huanghuai goat. Our results suggest that LEPR, LDB1, EGFR and FGF2 genes may be related to the high-altitude adaptation of the goats. These findings improve our understanding of the selection of the high-altitude adaptability of the Nagqu Tibetan goats and provide new theoretical knowledge for the conservation and utilization of germplasm resources.

Polymorphism and structure of populations of Siberian spruce (Picea obovata Ledeb.) at the northern limits of the species distribution

2012 ◽  
Vol 5 (2) ◽  
pp. 127-135 ◽  
Author(s):  
I. Yu. Koropachinskii ◽  
O. N. Potemkin ◽  
A. V. Rudikovskii ◽  
E. V. Kuznetsova
Keyword(s):  
Species Distribution ◽  
Picea Obovata ◽  
Siberian Spruce
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