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1. Increase in isoprene and monoterpene emissions after re-watering of droughted Quercus ilex seedlings

Author:
Filella, I.,   et al.   ; Peñuelas, J.; Seco, R.; Llusià, J.;     Show all 4 Authors
Source:
Biologia plantarum 2009 v.53 no.2 pp. 351-354
ISSN:
0006-3134
Subject:
Quercus ilex; diurnal variation; drought; emissions; isoprene; leaves; light intensity; monoterpenoids; photosynthesis; seedlings; temperature
Abstract:
... We followed the diurnal cycles of isoprenoid emissions from Quercus ilex seedlings under drought and after re-watering. We found that Quercus ilex, generally considered a non-isoprene emitter, also emitted isoprene although at low rates. The emission rates of isoprene reached 0.37 ± 0.02 nmol m⁻² s⁻¹ in controls, 0.15 ± 0.03 nmol m⁻² s⁻¹ under drought and 0.35 ± 0.04 nmol m⁻² s⁻¹ after re-watering ...
DOI:
10.1007/s10535-009-0065-4

2. Methyl salicylate fumigation increases monoterpene emission rates

Author:
Filella, I.,   et al.   ; Peñuelas, J.; Llusià, J.;     Show all 3 Authors
Source:
Biologia plantarum 2007 v.51 no.2 pp. 372-376
ISSN:
0006-3134
Subject:
Quercus ilex; air; chromatography; emissions; fumigation; leaves; mass spectrometry; methyl salicylate; monoterpenoids; temperature
Abstract:
... We aimed to assess the potential effects of fumigation by methyl salicylate (MeSA) on plant monoterpene production and emissions. We evaluated monoterpene production and emissions both by chromatographic and proton transfer reaction mass spectrometry at the whole plant-and leaf-scales, in MeSa-fumigated (ca. 60 mm³ m-³ in air) and control (without MeSa fumigation) holm oak (Quercus ilex L.) plants ...
DOI:
10.1007/s10535-007-0078-9

3. Interannual and seasonal changes in the soil exchange rates of monoterpenes and other VOCs in a Mediterranean shrubland

Author:
Filella, I.,   et al.   ; Asensio, D.; Peñuelas, J.; Prieto, P.; Estiarte, M.; Llusià, J.;     Show all 6 Authors
Source:
European journal of soil science 2008 v.59 no.5 pp. 878-891
ISSN:
1351-0754
Subject:
acetaldehyde; acetates; acetic acid; acetone; drought; emissions; foliar uptake; inventories; methanol; monoterpenoids; phenology; roots; seasonal variation; shrublands; soil ecology; soil temperature; soil water; volatile organic compounds
Abstract:
... Information about soil VOC inventories and exchange rates in different soils is very scarce. Seasonality of soil VOC exchange rates is also largely unknown, despite the increasing interest in some soil volatile compounds, such as monoterpenes, because of their important role in soil ecology. We aimed to explore and quantify soil VOC exchange rates in a Mediterranean shrubland and their seasonality ...
DOI:
10.1111/j.1365-2389.2008.01057.x

4. Interannual and interseasonal soil CO2 efflux and VOC exchange rates in a Mediterranean holm oak forest in response to experimental drought

Author:
Filella, I.,   et al.   ; Asensio, D.; Penuelas, J.; Llusia, J.; Ogaya, R.;     Show all 5 Authors
Source:
Soil biology & biochemistry 2007 v.39 no.10 pp. 2471-2484
ISSN:
0038-0717
Subject:
forest soils; carbon dioxide; soil respiration; volatile organic compounds; drought; gas exchange; dry environmental conditions; wet environmental conditions; soil water content; temporal variation; monoterpenoids
Abstract:
... Climate models predict drier conditions in the next decades in the Mediterranean basin. Given the importance of soil CO2 efflux in the global carbon balance and the important role of soil monoterpene and volatile organic compounds (VOCs) in soil ecology, we aimed to study the effects of the predicted drought on soil CO2, monoterpenes and other VOC exchange rates and their seasonal and interannual ...
DOI:
10.1016/j.soilbio.2007.04.019

5. Lonicera Implexa Leaves Bearing Naturally Laid Eggs of the Specialist Herbivore Euphydryas Aurinia have Dramatically Greater Concentrations of Iridoid Glycosides than other Leaves

Author:
Filella, I.,   et al.   ; Penuelas, J.; Sardans, J.; Stefanescu, C.; Parella, T.;     Show all 5 Authors
Source:
Journal of chemical ecology 2006 v.32 no.9 pp. 1925-1933
ISSN:
0098-0331
Subject:
Lonicera; leaves; Euphydryas; butterflies; phytophagous insects; host plants; host specificity; oviposition sites; chemical constituents of plants; iridoid glycosides; Spain
Abstract:
... We tested in the field the hypothesis that the specialist butterfly Euphydryas aurinia (Lepidoptera: Nymphalidae, Melitaeinae) lays eggs on leaves of Lonicera implexa (Caprifoliaceae) plants with greater iridoid concentrations. We conducted our investigations in a Mediterranean site by analyzing leaves with and without naturally laid egg clusters. There were no significant differences in iridoid g ...
DOI:
10.1007/s10886-006-9118-8
PubMed:
16902827

6. Changed plant and animal life cycles from 1952 to 2000 in the Mediterranean region

Author:
Filella, I.,   et al.   ; Penuelas, J.; Comas, P.;     Show all 3 Authors
Source:
Global change biology 2002 v.8 no.6 pp. 531-544
ISSN:
1354-1013
Subject:
history; Lepidoptera; air temperature; phenology; climate change; seasonal variation; natural resource management; wild birds; ecosystems; plant ecology; life cycle (organisms); fruiting; leaves
DOI:
10.1046/j.1365-2486.2002.00489.x

7. Leaf reflectance and photo- and antioxidant protection in field-grown summer-stressed Phillyrea angustifolia. Optical signals of oxidative stress?

Author:
Filella, I.,   et al.   ; Penuelas, J.; Munne-Bosch, S.; Llusia, J.;     Show all 4 Authors
Source:
New phytologist 2004 v.162 no.1 pp. 115-124
ISSN:
0028-646X
Subject:
gas exchange; light intensity; drought; alpha-tocopherol; summer; oxidative stress; stomatal conductance; zeaxanthin; water stress; beta-carotene; heat stress; leaves; solar radiation; Phillyrea; water content; antioxidant activity; Mediterranean climate; photostability; plant ecology; chlorophyll
DOI:
10.1046/j.1469-8137.2004.01007.x

8. Leaf mineral concentrations of Erica arborea, Juniperus communis and Myrtus communis growing in the proximity of a natural CO2 spring

Author:
Filella, I.,   et al.   ; Penuelas, J.; Tognetti, R.;     Show all 3 Authors
Source:
Global change biology 2001 v.7 no.3 pp. 291-301
ISSN:
1354-1013
Subject:
Erica arborea; manganese; carbon dioxide; Juniperus communis; interspecific variation; plant nutrition; nitrogen; calcium; leaf area; strontium; Myrtus communis; seasonal variation; carbon nitrogen ratio; potassium; chemical constituents of plants; barium; mineral content; leaves; Italy
DOI:
10.1046/j.1365-2486.2001.00409.x

9. Remote sensing of biomass and yield of winter wheat under different nitrogen supplies

Author:
Filella, I.,   et al.   ; Serrano, L.; Penuelas, J.;     Show all 3 Authors
Source:
Crop science 2000 v.40 no.3 pp. 723-731
ISSN:
0011-183X
Subject:
Triticum aestivum; biomass; remote sensing; nitrogen; nutrient availability; reflectance; leaf area index; light; nutrient deficiencies; canopy; chlorosis; application rate; ammonium nitrate; Spain
Abstract:
... Vegetation indices derived from reflectance data are related to canopy variables such as aboveground biomass, leaf area index (LAI), and the fraction of intercepted photosynthetically active radiation (fIPAR). However, under N stress the relationships between vegetation indices (VI) and these canopy variables might be confounded due to plant chlorosis. We studied the relationships between reflecta ...

10. Assessment of photosynthetic radiation-use efficiency with spectral reflectance

Author:
Filella, I.,   et al.   ; Penuelas, J.; Gamon, J.A.;     Show all 3 Authors
Source:
New phytologist 1995 v.131 no.3 pp. 291-296
ISSN:
0028-646X
Subject:
fluorescence; gas exchange; photosystem II; spectral analysis; photoperiod; xanthophylls; reflectance; leaves
DOI:
10.1111/j.1469-8137.1995.tb03064.x

11. Comparative field study of spring and summer leaf gas exchange and photobiology of the mediterranean trees Quercus ilex and Phillyrea latifolia

Author:
Filella, I.,   et al.   ; Penuelas, J.; Llusia, J.; Siscart, D.; Pinol, J.;     Show all 5 Authors
Source:
Journal of experimental botany 1998 v.49 no.319 pp. 229-238
ISSN:
0022-0957
Subject:
Phillyrea latifolia; Quercus ilex; spring; summer; seasonal variation; leaves; gas exchange; Mediterranean climate; chlorophyll; fluorescence; water stress; photosynthesis; stomatal conductance; water use efficiency; reflectance; xanthophylls; solar radiation; rain; diurnal variation; air temperature; electron transfer; Spain
Abstract:
... Summer-induced changes in gas exchange, fluorescence and reflectance were measured on leaves of two co-occurring Mediterranean small trees, Quercus ilex and Phillyrea latifolia, in May, June and July 1996 in Central Catalonia (NE Spain). The humid 1996 summer only produced mild water stress conditions. However, photosynthesis (A) and stomatal conductance (g(s)) decreased in June and July in both s ...
DOI:
10.1093/jxb/49.319.229