Modeling of annual variations of oak (Quercus robur L.) isoprene synthase activity to predict isoprene emission rates

Agricultural Management Decisions Impact Isoprene Emission and Physiology of Arundo donax, an Emerging Bioenergy Crop

“…Leaves growing low in the canopy had essentially the same capacity for isoprene emission as leaves from the top of the canopy. This conflicts with published reports for other species, which show a strong increase in isoprene emission capacity for leaves in the upper canopy compared to leaves from the lower canopy (Harley, et al 1996;Sharkey, et al 1996) as well as an increase in isoprene synthase activity (Lehning, et al, 2001). This is possibly due to the annual growth habit of A. donax and the agricultural practice of clearing all vegetation in the field.…”

Agricultural Management Decisions Impact Isoprene Emission and Physiology of Arundo donax, an Emerging Bioenergy Crop

“…Leaves growing low in the canopy had essentially the same capacity for isoprene emission as leaves from the top of the canopy. This conflicts with published reports for other species, which show a strong increase in isoprene emission capacity for leaves in the upper canopy compared to leaves from the lower canopy (Harley, et al 1996;Sharkey, et al 1996) as well as an increase in isoprene synthase activity (Lehning, et al, 2001). This is possibly due to the annual growth habit of A. donax and the agricultural practice of clearing all vegetation in the field.…”

Interannual variation in biogenic emissions on a regional scale

“…During our preliminary calibration, when we treated the satellite‐derived LAI data as truth, we implicitly assumed that leaf biomass density is a linear function of satellite‐observed spectral reflectance. The combination of these two assumptions implies that BVOC flux and leaf pigmentation are correlated, which is consistent with empirical studies [ Lehning et al , 2001] but which may not be completely accurate.…”

Diurnal and Seasonal Variation of Isoprene Biosynthesis-Related Genes in Grey Poplar Leaves

“…This assumption is confirmed by the study of Lehning et al (2001). They found that ISPS activity in oak (Quercus robur) leaves becomes measurable when carotenoid contents reach a stable level.…”

Agricultural Management Decisions Impact Isoprene Emission and Physiology of Arundo donax, an Emerging Bioenergy Crop

“…Leaves growing low in the canopy had essentially the same capacity for isoprene emission as leaves from the top of the canopy. This conflicts with published reports for other species, which show a strong increase in isoprene emission capacity for leaves in the upper canopy compared to leaves from the lower canopy (Harley, et al 1996;Sharkey, et al 1996) as well as an increase in isoprene synthase activity (Lehning, et al, 2001). This is possibly due to the annual growth habit of A. donax and the agricultural practice of clearing all vegetation in the field.…”

Interannual variation in biogenic emissions on a regional scale

“…During our preliminary calibration, when we treated the satellite‐derived LAI data as truth, we implicitly assumed that leaf biomass density is a linear function of satellite‐observed spectral reflectance. The combination of these two assumptions implies that BVOC flux and leaf pigmentation are correlated, which is consistent with empirical studies [ Lehning et al , 2001] but which may not be completely accurate.…”

Diurnal and Seasonal Variation of Isoprene Biosynthesis-Related Genes in Grey Poplar Leaves

“…This assumption is confirmed by the study of Lehning et al (2001). They found that ISPS activity in oak (Quercus robur) leaves becomes measurable when carotenoid contents reach a stable level.…”

Agricultural Management Decisions Impact Isoprene Emission and Physiology of Arundo donax, an Emerging Bioenergy Crop

“…Leaves growing low in the canopy had essentially the same capacity for isoprene emission as leaves from the top of the canopy. This conflicts with published reports for other species, which show a strong increase in isoprene emission capacity for leaves in the upper canopy compared to leaves from the lower canopy (Harley, et al 1996;Sharkey, et al 1996) as well as an increase in isoprene synthase activity (Lehning, et al, 2001). This is possibly due to the annual growth habit of A. donax and the agricultural practice of clearing all vegetation in the field.…”

Interannual variation in biogenic emissions on a regional scale

“…During our preliminary calibration, when we treated the satellite‐derived LAI data as truth, we implicitly assumed that leaf biomass density is a linear function of satellite‐observed spectral reflectance. The combination of these two assumptions implies that BVOC flux and leaf pigmentation are correlated, which is consistent with empirical studies [ Lehning et al , 2001] but which may not be completely accurate.…”

Diurnal and Seasonal Variation of Isoprene Biosynthesis-Related Genes in Grey Poplar Leaves

“…This assumption is confirmed by the study of Lehning et al (2001). They found that ISPS activity in oak (Quercus robur) leaves becomes measurable when carotenoid contents reach a stable level.…”