Intraspecific variation in drought response of Populus cathayana grown under ambient and enhanced UV-B radiation

Lu, Yanwei; Duan, Baoli; Zhang, Xiaolu; Korpelainen, Helena; Berninger, Frank; Li, Chunyang

doi:10.1051/forest/2009049

Cited by 26 publications

(13 citation statements)

References 58 publications

(59 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…2 ). Our results are consistent with some studies 68 69 70 71 , but not with others 44 72 73 . For instance, by analyzing mineral nutrition of F. sylvatica L. seedlings from eleven provenances, Peuke & Rennenberg 74 found that drought led to a reduction in leaf phosphorus concentration, but had no significant effects on leaf nitrogen.…”

Section: Discussionsupporting

confidence: 92%

Effects of drought on leaf carbon source and growth of European beech are modulated by soil type

Liu

Arend

Yang

et al. 2017

Sci Rep

View full text Add to dashboard Cite

Drought potentially affects carbon balance and growth of trees, but little is known to what extent soil plays a role in the trade-off between carbon gain and growth investment. In the present study, we analyzed leaf non-structural carbohydrates (NSC) as an indicator of the balance of photosynthetic carbon gain and carbon use, as well as growth of European beech (Fagus sylvatica L.) saplings, which were grown on two different soil types (calcareous and acidic) in model ecosystems and subjected to a severe summer drought. Our results showed that drought led in general to increased total NSC concentrations and to decreased growth rate, and drought reduced shoot and stem growth of plants in acidic soil rather than in calcareous soil. This result indicated that soil type modulated the carbon trade-off between net leaf carbon gain and carbon investment to growth. In drought-stressed trees, leaf starch concentration and growth correlated negatively whereas soluble sugar:starch ratio and growth correlated positively, which may contribute to a better understanding of growth regulation under drought conditions. Our results emphasize the role of soil in determining the trade-off between the balance of carbon gain and carbon use on the leaf level and growth under stress (e.g. drought).

show abstract

Section: Discussionsupporting

confidence: 92%

Effects of drought on leaf carbon source and growth of European beech are modulated by soil type

Liu

Arend

Yang

et al. 2017

Sci Rep

View full text Add to dashboard Cite

show abstract

“…On the contrary, the lower soil C:N ratio we found under drier conditions might be, at least partially, related to the higher N concentration and, thus, the lower C:N ratio observed in P. angustifolia leaves (Table 4). A higher N content in these leaves might indicate a greater accumulation of leaf soluble protein, as it has been reported in wet-temperate ecosystems under moderate drought (Lu et al 2009).…”

Section: Effects Of the Rainfall Regimementioning

confidence: 51%

Effects of UV radiation and rainfall reduction on leaf and soil parameters related to C and N cycles of a Mediterranean shrubland before and after a controlled fire

et al. 2018

View full text Add to dashboard Cite

Background and aims In the Mediterranean basin, reduction in cloudiness owing to climate change is expected to enhance solar ultraviolet (UV) levels and to decrease rainfall over the coming years, which would be accompanied by more frequent and intense wildfires. The aim of the present study was to investigate the role of solar UV-A and UV-B radiation in C and N pools of a Mediterranean shrubland and whether drier conditions could alter this role before and after a fire. Methods Over a three-year field experiment, 18 plots of 9 m 2 were subjected to three UV conditions (UV-A + UV-B exclusion, UV-B exclusion or near-ambient UV-A + UV-B exposure) combined with two rainfall regimes (natural or reduced rainfall). Several parameters related to C and N cycles in the soil and in the leaves and litter of two dominant plant species (Arbutus unedo and Phillyrea angustifolia) were measured before and after an experimental fire. Results UV-A exposure increased soil moisture throughout the study period, as well as respiration before the fire. The additional presence of UV-B decreased βglucosidase activity at 5-10 cm depth and soil respiration and pH. UV-B exposure also raised leaf C concentration in P. angustifolia and δ 15 N values in A. unedo. Reduced rainfall often emphasized the opposite effects of UV-A and UV-B on the studied parameters. After the fire, most of the UV and rainfall effects were lost. Conclusion UV-A exposure seems to stimulate soil biological activity and, thus, C and N turnover , while the effect of UV-B would be the opposite. At least in the short term, the Bhomogenizing influence^of fire would

show abstract

“…This indicates that poplar trees, regardless of species or hybrid, likely have a variety of mechanisms governing the drought response, and that this response is highly dependent on genotype. Although there is evidence that intra‐specific variation in drought response can be observed among growth rates and physiological traits within a species of Populus (Lu et al . 2009), drought‐induced variation in gene expression within a given species of Populus has not yet been investigated.…”

Section: Introductionmentioning

confidence: 99%

Intraspecific variation in the Populus balsamifera drought transcriptome

Hamanishi

Raj

Wilkins

et al. 2010

Plant Cell & Environment

View full text Add to dashboard Cite

Drought is a major limitation to the growth and productivity of trees in the ecologically and economically important genus Populus. The ability of Populus trees to contend with drought is a function of genome responsiveness to this environmental insult, involving reconfiguration of the transcriptome to appropriately remodel growth, development and metabolism. Here we test hypotheses aimed at examining the extent of intraspecific variation in the drought transcriptome using six different Populus balsamifera L. genotypes and Affymetrix GeneChip technology. Within a given genotype there was a positive correlation between the magnitude of water-deficit induced changes in transcript abundance across the transcriptome, and the capacity of that genotype to maintain growth following water deficit. Genotypes that had more similar drought-responsive transcriptomes also had fewer genotypic differences, as determined by microarray-derived single feature polymorphism (SFP) analysis, suggesting that responses may be conserved across individuals that share a greater degree of genotypic similarity. This work highlights the fact that a core specieslevel response can be defined; however, the underpinning genotype-derived complexities of the drought response in Populus must be taken into consideration when defining both species-and genus-level responses.

show abstract

Intraspecific variation in drought response of Populus cathayana grown under ambient and enhanced UV-B radiation

Cited by 26 publications

References 58 publications

Effects of drought on leaf carbon source and growth of European beech are modulated by soil type

Effects of drought on leaf carbon source and growth of European beech are modulated by soil type

Effects of UV radiation and rainfall reduction on leaf and soil parameters related to C and N cycles of a Mediterranean shrubland before and after a controlled fire

Intraspecific variation in the Populus balsamifera drought transcriptome

Contact Info

Product

Resources

About