Effects of light on the emissions of biogenic isoprene and monoterpenes: A review

Wang, Xinyu; Zhang, Yisheng; Tan, Yuran; Tan, Yan; Bai, J. M.; Gu, Dasa; Ma, Zizhen; Du, Jinzhou; Han, Zhiyu

doi:10.1016/j.apr.2022.101397

Cited by 13 publications

(6 citation statements)

References 130 publications

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“…This study validated the light dependency of isoprene production and emission, as reported in earlier studies, with the response of isoprene emission and photosynthesis to changing light levels approximating a rectangular hyperbola ( Lerdau and Keller, 1997 ; Alves et al., 2014 ; Oku et al., 2021 ). This can be owed to the energy and reductive equivalents for the de novo synthesis of isoprene that are provided by a photosynthetic electron transport ( Wang et al., 2022 ). Results indicated that although photosynthesis saturates at 1000 mol m -2 s -1 of PPFD, isoprene emission does not saturate until up to 2000 μmol m -2 s -1 of PPFD, indicating that the two processes are not completely coupled.…”

Section: Discussionmentioning

confidence: 99%

“…Therefore, photosynthesis and isoprene emissions increase with the increasing light intensity. When photosynthesis reaches its light saturation point, excess ATP and NADPH continue to be consumed by the MEP pathway, which lead to a higher light saturation point of isoprene ( Wang et al., 2022 ). However, under environmental conditions that limit photosynthesis, alternative carbon sources that have not been recently assimilated can be mobilized for isoprene synthesis ( Karl et al., 2002 ; Brilli et al., 2007 ; Jud et al., 2016 ).…”

Section: Introductionmentioning

confidence: 99%

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Age effects of Moso bamboo on leaf isoprene emission characteristics

YanDong

Peng²,

Wu³

et al. 2023

Front. Plant Sci.

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Isoprene is a highly reactive volatile organic compound that significantly affects atmospheric oxidant capacity, regional air quality, and climate change. Moso bamboo (Phyllostachys edulis), a species widely distributed in tropical and subtropical regions, particularly in China, is a strong isoprene emitter with great potential for carbon sequestration. Carbon sequestration is negatively correlated with culm age; however, the effect of this correlation on isoprene emissions remains unknown. In this study, we investigated the photosynthetic and isoprene emission characteristics of Moso bamboo at different culm ages. The results showed that the age effect on isoprene emission was different from that on photosynthesis; the net photosynthesis rate (Pn) was the highest in young, followed by mature, and then old bamboo, whereas the isoprene emission rate (Iso) was the highest in young, followed by old, and then mature bamboo. Moreover, the percentage of carbon loss as isoprene emission (C-loss) during photosynthesis of old bamboo was 35% higher than that of mature bamboo under standard conditions (leaf temperature: 30°C; light intensity: 1000 µmol m-2 s-1). Therefore, we strongly recommend considering the culm age when establishing an isoprene emission model of Moso bamboo. Additionally, because the Iso and C-loss of old bamboo were higher than those of mature bamboo, we suggest that attention should be paid to the management of bamboo age structure and timely felling of aged bamboo to reduce environmental risk.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Age effects of Moso bamboo on leaf isoprene emission characteristics

YanDong

Peng²,

Wu³

et al. 2023

Front. Plant Sci.

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“…Though a number of factors are known that control isoprene emissions from plants, the most important environmental factors that drive isoprene emission are temperature, light intensity [ 24 , 25 , 26 ], and intercellular CO 2 [ 27 , 28 ]. Most existing models consider the impact of these driving variables on isoprene emission [ 29 , 30 , 31 , 32 ]. The Guenther 1993 (G93) algorithm [ 33 ] simulates instantaneous leaf-level isoprene emission as a function of temperature and light drivers and is the most extensively used algorithm for the estimation of isoprene emissions globally.…”

Section: Introductionmentioning

confidence: 99%

Relationship between Cumulative Temperature and Light Intensity and G93 Parameters of Isoprene Emission for the Tropical Tree Ficus septica

Oku,

Iqbal,

Oogai

et al. 2024

Plants

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The most widely used isoprene emission algorithm, G93 formula, estimates instantaneous leaf-level isoprene emission using the basal emission factor and light and temperature dependency parameters. The G93 parameters have been suggested to show variation depending on past weather conditions, but no study has closely examined the relationship between past meteorological data and the algorithm parameters. Here, to examine the influence of the past weather on these parameters, we monitored weather conditions, G93 parameters, isoprene synthase transcripts and protein levels, and MEP pathway metabolites in the tropical tree Ficus septica for 12 days and analyzed their relationship with cumulative temperature and light intensity. Plants were illuminated with varying (ascending and descending) light regimes, and our previously developed Ping-Pong optimization method was used to parameterize G93. The cumulative temperature of the past 5 and 7 days positively correlated with CT2 and α, respectively, while the cumulative light intensity of the past 10 days showed the highest negative correlation with α. Concentrations of MEP pathway metabolites and IspS gene expression increased with increasing cumulative temperature. At best, the cumulative temperature of the past 2 days positively correlated with the MEP pathway metabolites and IspS gene expression, while these factors showed a biphasic positive and negative correlation with cumulative light intensity. Optimized G93 captured well the temperature and light dependency of isoprene emission at the beginning of the experiment; however, its performance significantly decreased for the latter stages of the experimental duration, especially for the descending phase. This was successfully improved through separate optimization of the ascending and descending phases, emphasizing the importance of the optimization of formula parameters and model improvement. These results have important implications for the improvement of isoprene emission algorithms, particularly under the predicted increase in future global temperatures.

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“…However, excessively high temperatures can lead to enzyme inactivation, resulting in a decrease in the emission rates of BVOCs [34]. Similarly, within a certain range of PAR (500-2000 µmol•m −2 •s −1 ), the emission rates of terpenes exhibit a positive correlation [35][36][37]. Numerous studies have investigated the relationship between BVOC emissions from tree leaves and physiological parameters at both micro and macro levels [9,11,[38][39][40].…”

Section: Introductionmentioning

confidence: 99%

Emission Pattern of Biogenic Volatile Organic Compounds from Wetland Vegetation

Chen,

Wang,

et al. 2024

Atmosphere

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Biogenic volatile organic compounds (BVOCs) significantly contribute to atmospheric chemistry at both regional and global scales. The composition and intensity of BVOC emissions vary significantly among different plant species. Previous studies have focused on BVOC emissions from tree species, but the results of research on BVOC emissions from wetland plants are still limited. Therefore, in this study, BVOCs emitted by three aquatic plants (Phragmites australis, Typha angustifolia, and Iris pseudacorus) were sampled and analyzed using a dynamic headspace technique combined with GC-MS at daily scales. The diurnal observation data showed that the total BVOC emission rates of the three plants peaked with the increase in environmental factors (temperature, PAR, and water temperature). P. australis was the only of the three plants that emitted isoprene with a high rate of 48.34 μg·g−1Dw·h−1. Moreover, the peak emission rates of total BVOC (78.45 μg·g−1Dw·h−1) in P. australis were higher than most tree species. The emissions rates of volatile organic compounds, including monoterpenes, oxygenated volatile organic compounds, alkanes, and other volatile organic compounds, were statistically correlated across all species. The emission rates of isoprene from P. australis had significant associations with intercellular CO2 concentration (Ci) (0.58, p < 0.05) and transpiration rate (Tr) (−0.63, p < 0.01). The emission rates of monoterpenes from P. australis were found to have a significantly positive correlation with the net photosynthetic rate (Pn) (0.58, p < 0.05) while T. angustifolia (−0.59, p < 0.05) and I. pseudacorus (−0.47, p < 0.05) showed the opposite trend. Such findings hold significance for the refinement of localized emission inventories and the development of comprehensive emission process models in future research, as BVOC emissions from wetland plants were reported here for the first time.

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Effects of light on the emissions of biogenic isoprene and monoterpenes: A review

Cited by 13 publications

References 130 publications

Age effects of Moso bamboo on leaf isoprene emission characteristics

Age effects of Moso bamboo on leaf isoprene emission characteristics

Relationship between Cumulative Temperature and Light Intensity and G93 Parameters of Isoprene Emission for the Tropical Tree Ficus septica

Emission Pattern of Biogenic Volatile Organic Compounds from Wetland Vegetation

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