Structural features of the bark in young stems of Betula ermanii Cham. in the conditions of Yuzhno-Sakhalinsky mud volcano (Sakhalin Island)

Talskikh, Anastasia I.; Копанина, А.В.; Vlasova, I.I.

doi:10.1088/1755-1315/324/1/012033

Cited by 2 publications

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“…Our findings match the discovered trends of structural changes of secondary phloem of Betula ermanii Cham. in conditions of solfataric fields and fumarole fields of Baransky Volcano on Iturup island and Toxicodendron orientale Greene in conditions of Mendeleyev Volcano on Kunashir island [4,[16][17][18]. We saw similar results in year-old stems of Betula ermanii in conditions of Starozavodskoye solfataric field of Baransky Volcano, where the conductive phloem is wider than normal.…”

Section: Resultssupporting

confidence: 71%

Structural deviations in secondary phloem of young shoots of Spiraea beauverdiana near magma volcanoes

Vatserionova

Копанина

Vlasova

2021

IOP Conf. Ser.: Earth Environ. Sci.

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We performed a comparative analysis of the internal structure of the secondary phloem of one, two and three-year-old stems of Spiraea beauverdiana growing in extreme conditions of solfataric fields of Golovnin Volcano caldera and Mendeleyev Volcano and in normal conditions. The combination of environmental factors in conditions of solfataric activity, such as high temperatures in the soil and in the near-surface air, as well as saturation with gases toxic to plants, rare elements accumulating in the nearby substrate, and lack of soil moisture, interfere with normal phellogen and cambium activity. Deviations from the normal structure involve changes in the following parameters of the internal structure of a year-old stem of S. beauverdiana. Secondary phloem parameters in the studied habitats are normal, except for the length of the segments of sieve tubes, the height of single-row rays, the length of parenchymal girder; these are shorter in S. beauverdiana stems from volcanos. At two and three years of age in volcanic conditions we see reduction in the width of the secondary phloem (both conductive and non-conductive) and the diameter of the segments of sieve tubes. In samples from Golovnin Volcano we see reduction in tangential diameter, while in the samples from Mendeleyev Volcano it’s the radial diameter. We also see reduction in the height of multiple-row rays. At that age we see changes in the structure of the radial parenchyma; namely, we find no double-row rays in samples from Golovnin Volcano caldera. One of the signs of impact of volcanic activity on the bark structure is development of non-specific anomalies in the internal structure of the S. beauverdiana bark, namely, in the outer bark, or in deeper levels, such as the secondary phloem. That causes sclerification and dilatation of parenchyma, and multiple layers in some tissues.

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Section: Resultssupporting

confidence: 71%

Structural deviations in secondary phloem of young shoots of Spiraea beauverdiana near magma volcanoes

Vatserionova

Копанина

Vlasova

2021

IOP Conf. Ser.: Earth Environ. Sci.

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“…Исследования, которые выполняет коллектив лаборатории экологии растений и геоэкологии ИМГиГ ДВО РАН с 2007, года направлены на изучение структурного отклика древесных растений на стрессовые геологические и климатические условия островных экологических систем. Эти исследования открывают возможность выявления адаптивных черт внутренней структуры для понимания механизмов адаптации стебля древесных растений в экстремальных экологических условиях (Eryemin, Kopanina, 2012;Vatserionova, Kopanina, 2016;Kopanina et al, 2017;Kopanina, 2019;Talskikh, 2019a).…”

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The structure of the bark of the annual stem of Spiraea beauverdiana (Rosaceae) in the conditions of the solfatar fields of the Golovnin volcano’s caldera (Kunashir, South Kuril Islands)

Vatserionova¹,

Ras²,

Копанина³

et al. 2021

Бюлл. БСИ ДВО РАН

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The results of comparative analysis of adaptive features of bark of the Spiraea beauverdiana S.K. Schneid. (Rosaceae Juss.) are presented in the extreme conditions of the Central Eastern solfatara field of the Golovnin volcano’s caldera and typical conditions (pinus pumila-shrub sasa sp.). A statistical analysis of the structural parameters of annual stem S. beauverdiana bark has been conducted, which has made it possible to distinguish features dependent on extreme environmental conditions. Parameters of annual stem bark have been elicited, which have higher than normal values: stem diameter, bark thickness, the thickness of periderm and phellem, radial diameter of phellem cells, lack of biseriate phloem rays. It was found the formation of distinct zones of bark abnormal structures having adaptive character in extreme conditions of solfataric fields. These abnormal zones are characterized by the own line of symmetry, they are sphere-shaped, tissues and cells indices forming these structures massively differ from the same parts with typical structures. The structural response of the annual stem bark of S. beauverdiana is likely to have an adaptive nature.

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Structural features of the bark in young stems of Betula ermanii Cham. in the conditions of Yuzhno-Sakhalinsky mud volcano (Sakhalin Island)

Cited by 2 publications

References 1 publication

Structural deviations in secondary phloem of young shoots of Spiraea beauverdiana near magma volcanoes

Structural deviations in secondary phloem of young shoots of Spiraea beauverdiana near magma volcanoes

The structure of the bark of the annual stem of Spiraea beauverdiana (Rosaceae) in the conditions of the solfatar fields of the Golovnin volcano’s caldera (Kunashir, South Kuril Islands)

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