Seasonal Changes in Interclone Variation Following Ozone Exposure on Three Major Gene Pools: An Analysis of Cryptomeria Japonica Clones

Miyama, Takafumi; Tobita, Hidetaka; Uchiyama, Kentaro; Yazaki, K.; Ueno, S.; Uemura, Akira; Matsumoto, Asako; Kitao, Mitsutoshi; Izuta, Takeshi

doi:10.3390/atmos10110643

Cited by 4 publications

(4 citation statements)

References 21 publications

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“…The emission rates of MTs, SQTs, and DTs from C. japonica measured in this study using saplings were significantly higher than those measured in a previous study using canopy trees of C. japonica 42 . This difference might be due to the individual tree size, given that the rate of MTs emitted from C. japonica saplings 45 was similar to the rate measured in this study. Moreover, if smaller individuals invest more in defense against the pathogen than larger individuals, they may be more effective in avoiding death due to the diseases.…”

Section: Discussionsupporting

confidence: 80%

Diversification of terpenoid emissions proposes a geographic structure based on climate and pathogen composition in Japanese cedar

Hiura

Yoshioka

Matsunaga³

et al. 2021

Sci Rep

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Biogenic volatile organic compounds emitted from plants are important constituents of atmospheric chemistry and play a major role in the resistance of plants against various environmental stresses. However, little is known about how abiotic and biotic environments on a geographic scale relate to diversifications of the emission. Here, we present variations of terpenes stored in and emitted from leaves of a single species in a common garden, using genetically differentiated local populations of Japanese cedar, the most dominant and widely distributed tree species in Japan. Furthermore, we determined the composition of fungal communities in 50 locations, based on the presence or absence of 158 fungal species inhabiting the cedar. The results showed that terpenoids, especially those that are emitted, were highly diversified and geographically structured among the 12 populations. The total amount of stored terpenes was negatively affected by warm and less-snow climates. On the other hand, variations in some emitted terpenoid species among the populations were correlated to antagonistic fungal species inhabiting the Japanese cedar. We propose that the diversification of composition and amount of stored and emitted terpenoids in the tree species is not only structured by climate, but also antagonistic fungal communities through biological interactions.

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Section: Discussionsupporting

confidence: 80%

Diversification of terpenoid emissions proposes a geographic structure based on climate and pathogen composition in Japanese cedar

Hiura

Yoshioka

Matsunaga³

et al. 2021

Sci Rep

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“…Changes in cell structure in ozone‐damaged plants may result from rampant oxidative stress (Baier et al., 2005 ; Iriti & Faoro, 2008 ). These may be produced by a deficient regulatory response, which results in the differential accumulation of certain metabolites, including terpenes (Kopaczyk et al., 2020 ; Miyama et al., 2019 ). Although we observed no clear anatomical differences in the resin ducts between symptomatic and asymptomatic trees, which could have indicated contrasting metabolite accumulation (Figure 4 ), there were significant differences in terpene composition, particularly sesquiterpenes, between asymptomatic and symptomatic phenotypes during the moderate O 3 period.…”

Section: Discussionmentioning

confidence: 99%

“…Although previous studies have described O 3 damage symptoms and pointed to this pollutant as the main cause for fir forest decline in CDMX (Alvarado, 1989;Alvarado-Rosales & Hernández-Tejeda, 2002;de Bauer & Hernández-Tejeda, 2007) a deficient regulatory response to the oxidative stress caused by O 3 could be translated in the differential accumulation of certain metabolites, like some specific terpenes that have been observed in asymptomatic plants from various species after ozone exposure (Kopaczyk et al, 2020;Miyama et al, 2019). Lastly, transcriptomic analyses can help to narrow down the number of genes involved in the response to O 3 exposure and to examine plastic responses in gene expression under varying levels of O 3 (DeBiasse & Kelly, 2016).…”

Section: More Than 5 Million Vehicles Circulate Daily In Mexico Citymentioning

confidence: 99%

Histologic, metabolomic, and transcriptomic differences in fir trees from a peri‐urban forest under chronic ozone exposure

Reyes‐Galindo,

Jaramillo‐Correa,

Shishkova

et al. 2024

Ecology and Evolution

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Urbanization modifies ecosystem conditions and evolutionary processes. This includes air pollution, mostly as tropospheric ozone (O3), which contributes to the decline of urban and peri‐urban forests. A notable case are fir (Abies religiosa) forests in the peripheral mountains southwest of Mexico City, which have been severely affected by O3 pollution since the 1970s. Interestingly, some young individuals exhibiting minimal O3—related damage have been observed within a zone of significant O3 exposure. Using this setting as a natural experiment, we compared asymptomatic and symptomatic individuals of similar age (≤15 years old; n = 10) using histologic, metabolomic, and transcriptomic approaches. Plants were sampled during days of high (170 ppb) and moderate (87 ppb) O3 concentration. Given that there have been reforestation efforts in the region, with plants from different source populations, we first confirmed that all analyzed individuals clustered within the local genetic group when compared to a species‐wide panel (Admixture analysis with ~1.5K SNPs). We observed thicker epidermis and more collapsed cells in the palisade parenchyma of needles from symptomatic individuals than from their asymptomatic counterparts, with differences increasing with needle age. Furthermore, symptomatic individuals exhibited lower concentrations of various terpenes (ß‐pinene, ß‐caryophylene oxide, α‐caryophylene, and ß‐α‐cubebene) than asymptomatic trees, as evidenced through GC–MS. Finally, transcriptomic analyses revealed differential expression for 13 genes related to carbohydrate metabolism, plant defense, and gene regulation. Our results indicate a rapid and contrasting phenotypic response among trees, likely influenced by standing genetic variation and/or plastic mechanisms. They open the door to future evolutionary studies for understanding how O3 tolerance develops in urban environments, and how this knowledge could contribute to forest restoration.

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“…We utilized the analysis methods mentioned in previous studies [20,21]. The isoprene and seven monoterpenes (myrcene, sabinene, limonene, 3-carene, t-β-ocimene, α-pinene, and β-pinene) in the Model of Emissions of Gases and Aerosols from Nature (MEGAN) [22] were quantified.…”

Section: Atd-gc-ms Analysismentioning

confidence: 99%

Increases in Biogenic Volatile Organic Compound Concentrations Observed after Rains at Six Forest Sites in Non-Summer Periods

et al. 2020

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Since biogenic volatile organic compounds (BVOCs) are important precursors of ozone, the monitoring of the BVOC concentration distributions is needed. In general, forest BVOC concentrations increase in summer as well as in other seasons. This study aims to detect temporally sporadic increases in BVOC concentrations in the non-summer months and to analyze the occurring climatic conditions. Using a uniform sampling system and shared gas chromatography–mass spectrometry, the concentrations of isoprene and monoterpenes in six Japanese forests were observed approximately once a month for 3 years. Using the observed data, the relations between the BVOC concentration increases and meteorological factors were evaluated. Twenty instances of temporal increases in BVOC concentrations were observed. These mainly occurred in spring for isoprene and in autumn for monoterpenes. Most of the increases in the non-summer months were observed after a rainfall event, when the daily temperature range was large, suggesting that wind, rain, and a rapid diurnal temperature rise could be factors in the non-summer months. Thus, the network monitoring of BVOC concentrations might be effective for understanding the effects of factors other than temperature, and the mechanisms and frequency of the temporal increases, on the BVOC concentrations in various forests.

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Seasonal Changes in Interclone Variation Following Ozone Exposure on Three Major Gene Pools: An Analysis of Cryptomeria Japonica Clones

Cited by 4 publications

References 21 publications

Diversification of terpenoid emissions proposes a geographic structure based on climate and pathogen composition in Japanese cedar

Diversification of terpenoid emissions proposes a geographic structure based on climate and pathogen composition in Japanese cedar

Histologic, metabolomic, and transcriptomic differences in fir trees from a peri‐urban forest under chronic ozone exposure

Increases in Biogenic Volatile Organic Compound Concentrations Observed after Rains at Six Forest Sites in Non-Summer Periods

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