Search Results - "Ruuhola, Teija"

Asynchrony between Host Plant and Insects-Defoliator within a Tritrophic System: The Role of Herbivore Innate Immunity by Martemyanov, Vyacheslav V, Pavlushin, Sergey V, Dubovskiy, Ivan M, Yushkova, Yuliya V, Morosov, Sergey V, Chernyak, Elena I, Efimov, Vadim M, Ruuhola, Teija, Glupov, Victor V

“…The effects of asynchrony in the phenology of spring-feeding insect-defoliators and their host plants on insects' fitness, as well as the importance of this…”
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Foliar Phenolics are Differently Associated with Epirrita autumnata Growth and Immunocompetence by Haviola, Sanna, Kapari, Lauri, Ossipov, Vladimir, Rantala, Markus J, Ruuhola, Teija, Haukioja, Erkki

“…The quality of available food may affect insect herbivores directly (via growth and survivorship) and/or indirectly (by modifying insect vulnerability to…”
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Immunological Memory of Mountain Birches: Effects of Phenolics on Performance of the Autumnal Moth Depend on Herbivory History of Trees by Ruuhola, Teija, Salminen, Juha-Pekka, Haviola, Sanna, Yang, Shiyong, Rantala, Markus J

“…Plants have been suggested to have an immunological memory comparable to animals. The evidence for this, however, is scarce. In our study with the mountain…”
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Effects of host-plant shift on immune and other key life-history traits of an eruptive Geometrid, Epirrita autumnata (Borkhausen) by YANG, SHIYONG, RUUHOLA, TEIJA, HAVIOLA, SANNA, RANTALA, MARKUS J.

“…Abstract 1. Population density of Epirrita autumnata (Lepidoptera: Geometridae) reaches outbreak densities regularly in northernmost Scandinavia. During these…”
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Boron in forest trees and forest ecosystems by Lehto, Tarja, Ruuhola, Teija, Dell, Bernard

“…▶ This review explores new findings on the role and function of B in plants, and their consequences on forest trees and on ecosystems that they dominate. ▶…”
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Systemic Induction of Salicylates in Salix myrsinifolia(Salisb.) by Ruuhola, Teija M., Sipura, Mika, Nousiainen, Outi, Tahvanainen, Jorma

“…We studied the induction of salicylates in mature leaves of Salix myrsinifolia Salisb. (Salicaceae) following severe wounding by a specialist leaf-beetle…”
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Kallioperä ja maalaji vaikuttavat hirvivahinkojen määrään by Teija Ruuhola, Ari Nikula, Vesa Nivala, Seppo Nevalainen, Juho Matala

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Effects of long-term UV-exposure and plant sex on the leaf phenoloxidase activities and phenolic concentrations of Salix myrsinifolia (Salisb.) by Ruuhola, Teija, Nybakken, Line, Randriamanana, Tendry, Lavola, Anu, Julkunen-Tiitto, Riitta

“…The accumulation of flavonoids on the leaf surface is a well-characterized protective mechanism against UV-B radiation. Other protective mechanisms, such as…”
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Salicylates of Intact Salix myrsinifolia Plantlets Do Not Undergo Rapid Metabolic Turnover by RUUHOLA, T. M, JULKUNEN-TIITTO, M.-R. K

“…Salicylates, the main phenolic glucosides of northern willow (Salix spp.), play an important role in plant-herbivore interactions. Salicylates are labile…”
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Effects of Cd2+ exposure on key life history traits and activities of four metabolic enzymes in Helicoverpa armigera (Lepidopteran: Noctuidae) by Zhan, Haixia, Zhang, Jinping, Chen, Zhu, Huang, Yongjie, Ruuhola, Teija, Yang, Shiyong

“…Cadmium (Cd) is a toxic non-essential element accumulated easily in living organisms due to its non-biodegradable nature. A slight increase in Cd levels will…”
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Retranslocation of nutrients in relation to boron availability during leaf senescence of Betula pendula Roth by Ruuhola, Teija, Leppänen, Tuomo, Lehto, Tarja

“…Boron (B) is an essential micronutrient, whose deficiency is common in boreal forests. Our aim was to investigate the effects of the B supply on the…”
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Natural host-plant quality affects immune defence of an insect herbivore by Klemola, Netta, Klemola, Tero, Rantala, Markus J, Ruuhola, Teija

“…We examined the effect of natural host-plant quality on immune resistance in the autumnal moth, Epirrita autumnata (Borkhausen) (Lepidoptera: Geometridae). The…”
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Foliar oxidases as mediators of the rapidly induced resistance of mountain birch against Epirrita autumnata by Ruuhola, Teija, Yang, Shiyong, Ossipov, Vladimir, Haukioja, Erkki

“…Induced resistance of the mountain birch against its main defoliator Epirrita autumnata is a well-characterized phenomenon. The causal mechanism for this…”
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Effects of Overproduction of Condensed Tannins and Elevated Temperature on Chemical and Ecological Traits of Genetically Modified Hybrid Aspens (Populus tremula × P. tremuloides) by Kosonen, Minna, Keski-Saari, Sarita, Ruuhola, Teija, Constabel, C. Peter, Julkunen-Tiitto, Riitta

“…Gene transfer techniques offer new possibilities to study regulation of phenolic pathways and the defensive role of phenolics. Hybrid aspen lines ( Populus…”
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Effects of bedrock and surficial deposit composition on moose damage in young forest stands in Finnish Lapland by Ruuhola, Teija, Nikula, Ari, Vesa, Nivala, Nevalainen, Seppo, Matala, Juho

“…There is evidence that moose are attracted to fertile growth habitats apparently due to better quality and larger quantities of food. The nutrients in mineral…”
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Effects of elevated ultraviolet-B radiation on a plant-herbivore interaction by Anttila, Ulla, Julkunen-Tiitto, Riitta, Rousi, Matti, Yang, Shiyong, Rantala, Markus J, Ruuhola, Teija

“…Enhanced ultraviolet-B (UV-B) radiation may have multiple effects on both plants and animals and affect plant-herbivore interactions directly and indirectly by…”
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Effects of Cd super(2+) exposure on key life history traits and activities of four metabolic enzymes in Helicoverpa armigera (Lepidopteran: Noctuidae) by Zhan, Haixia, Zhang, Jinping, Chen, Zhu, Huang, Yongjie, Ruuhola, Teija, Yang, Shiyong

“…Cadmium (Cd) is a toxic non-essential element accumulated easily in living organisms due to its non-biodegradable nature. A slight increase in Cd levels will…”
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Effects of Cd 2+ exposure on key life history traits and activities of four metabolic enzymes in Helicoverpa armigera (Lepidopteran: Noctuidae) by Zhan, Haixia, Zhang, Jinping, Chen, Zhu, Huang, Yongjie, Ruuhola, Teija, Yang, Shiyong

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Boron nutrition affects the carbon metabolism of silver birch seedlings by Ruuhola, Teija, Keinänen, Markku, Keski-Saari, Sarita, Lehto, Tarja

“…Boron (B) is an essential micronutrient whose deficiency is common both in agriculture and in silviculture. Boron deficiency impairs the growth of plants and…”
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Defoliating insect immune defense interacts with induced plant defense during a population outbreak by Kapari, Lauri, Haukioja, Erkki, Rantala, Markus J., Ruuhola, Teija

“…During population outbreaks, top-down and bottom-up factors are unable to control defoliator numbers. To our knowledge, details of biotic interactions leading…”
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