scholarly journals Fine roots of Picea abies compensate for drought stress in the rainfall reduction experiment

Dendrobiology ◽  
2018 ◽  
Vol 80 ◽  
pp. 91-100 ◽  
Author(s):  
František Lorenc ◽  
Vítězslava Pešková ◽  
Roman Modlinger ◽  
Libor Mrnka ◽  
Ivana Tomášková ◽  
...  
Keyword(s):  
Drought Stress ◽  
Picea Abies ◽  
Fine Roots ◽  
Reduction Experiment ◽  
Rainfall Reduction

scholarly journals Drought Stress Described by Transcriptional Responses of Picea Abies under Pathogen Heterobasidion Parviporum Attack

2021 ◽  
Author(s):  
Xenia Hao-Yi Yeoh ◽  
Blessing Durodola ◽  
Kathrin Blumenstein ◽  
Eeva Terhonen
Keyword(s):  
Climate Change ◽  
Drought Stress ◽  
Picea Abies ◽  
Norway Spruce ◽  
Water Availability ◽  
Differentially Expressed Gene ◽  
Differentially Expressed ◽  
Gene Expressions ◽  
Transcriptional Responses ◽  
Water Group

The major threats to the sustainable supply of forest tree products are adverse climate, pests and diseases. Climate change, exemplified by increased drought, poses a unique threat to global forest health. This is attributed to the unpredictable behavior of forest pathosystems, which can favor fungal pathogens over the host under persistent drought stress conditions in the future. Currently, the effects of drought on tree resistance against pathogens are hypothetical, thus research is needed to identify these correlations. Norway spruce (Picea abies) is one of the most economically important tree species in Europe, and is considered highly vulnerable to changes in climate. Dedicated experiments to investigate how disturbances will affect the Norway spruce - Heterobasidion sp. pathosystem are important, in order to develop different strategies to limit the spread of H. annosum s.l. under the predicted climate change. Here, we report a transcriptional study to compare Norway spruce gene expressions to evaluate the effects of water availability and the infection of Heterobasidion parviporum. We performed inoculation studies of three-year-old saplings in a greenhouse (purchased from a nursery). Norway spruce saplings were treated in either high (+) or low (-) water groups: high water group received double the water amount than the low water group. RNA was extracted and sequenced. Similarly, we quantified gene expression levels of candidate genes in biotic stress and jasmonic acid (JA) signaling pathways using qRT-PCR, through which we discovered a unique preferential defense response of H. parviporum-infected Norway spruce under drought stress at the molecular level. Disturbances related to water availability, especially low water conditions can have negative effects on the tree host and benefit the infection ability of the pathogens in the host. From our RNA-seq analysis, 114 differentially expressed gene regions were identified between high (+) and low (-) water groups under pathogen attack. None of these gene pathways were identified to be differentially expressed from both non-treated and mock-control treatments between high (+) and low (-) water groups. Finally, only four genes were found to be associated with drought in all treatments.

scholarly journals Differences in fine root traits between Norway spruce (Picea abies [L.] Karst.) and European beech (Fagus sylvatica L.) – A case study in the Kysucké Beskydy Mts

2009 ◽  
Vol 55 (No. 12) ◽  
pp. 556-566 ◽  
Author(s):  
B. Konôpka
Keyword(s):  
Picea Abies ◽  
Norway Spruce ◽  
Fagus Sylvatica ◽  
Seasonal Dynamics ◽  
Fine Roots ◽  
Fine Root ◽  
Root Traits ◽  
European Beech ◽  
Root Turnover ◽  
Mortality Ratio

Interspecific comparisons of the fine root “behaviour” under stressful situations may answer questions related to resistance to changing environmental conditions in the particular tree species. Our study was focused on Norway spruce (<I>Picea abies</I> [L.] Karst.) and European beech (<I>Fagus sylvatica</I> L.) grown in an acidic soil where acidity was caused by past air pollution in the Kysucké Beskydy Mts., North-Western Slovakia. Between April and October 2006, the following fine root traits were studied: biomass and necromass seasonal dynamics, vertical distribution, production, mortality, fine root turnover and production to mortality ratio. Sequential soil coring was repeatedly implemented in April, June, July, September, and October including the soil layers of 0–5, 5–15, 15–25, and 25–35 cm. Results indicated that spruce had a lower standing stock of fine roots than beech, and fine roots of spruce were more superficially distributed than those of beech. Furthermore, we estimated higher seasonal dynamics and also higher turnover of fine roots in spruce than in beech. The production to mortality ratio was higher in beech than in spruce, which was hypothetically explained as the effect of drought episodes that occurred in July and August. The results suggested that the beech root system could resist a physiological stress better than that of spruce. This conclusion was supported by different vertical distributions of fine roots in spruce and beech stands.

scholarly journals Effects of ozone and drought stress on the physiology and growth of two clones of Norway spruce (Picea abies)

1997 ◽  
Vol 136 (2) ◽  
pp. 265-275 ◽  
Author(s):  
P. E. KARLSSON ◽  
E. L. MEDIN ◽  
G. WALLIN ◽  
G. SELLDEN ◽  
L. SKARBY
Keyword(s):  
Drought Stress ◽  
Picea Abies ◽  
Norway Spruce

Effects of drought stress on growth, physiological and biochemical parameters in fine roots of Quercus variabilis Bl. seedlings

2014 ◽  
Vol 34 (15) ◽  
Author(s):  
吴敏 WU Min ◽  
张文辉 ZHANG Wenhui ◽  
周建云 ZHOU Jianyun ◽  
马闯 MA Chuang ◽  
韩文娟 Han Wenjuan
Keyword(s):  
Drought Stress ◽  
Fine Roots ◽  
Biochemical Parameters ◽  
Quercus Variabilis ◽  
Effects Of Drought ◽  
Physiological And Biochemical

scholarly journals Is forest fecundity resistant to drought? Results from an 18‐yr rainfall‐reduction experiment

2020 ◽  
Vol 227 (4) ◽  
pp. 1073-1080 ◽  
Author(s):  
Michał Bogdziewicz ◽  
Marcos Fernández‐Martínez ◽  
Josep M. Espelta ◽  
Romà Ogaya ◽  
Josep Penuelas
Keyword(s):  
Reduction Experiment ◽  
Rainfall Reduction
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