Ozone exposure- and flux-based response relationships with photosynthesis, leaf morphology and biomass in two poplar clones

Shang, Bo; Feng, Zhaozhong; Пин, Ли; Yuan, Xiangyang; Xu, Yansen; Calatayud, Vicent

doi:10.1016/j.scitotenv.2017.06.083

Cited by 76 publications

(23 citation statements)

References 57 publications

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“…2 and Table 1). These results are consistent with the findings of Shang et al (2017) for polar 546. Similarly, a previous study showed that O3 can substantially reduce Asat in most plants, and also detected an uncoupled relationships between Asat and gs (Zhang et al, 2012).…”

Section: Effect Of O3 Applicationsupporting

confidence: 93%

“…As anticipated, O3-induced injuries to poplar 546 were detected in E-O3 despite N fertilization (e.g., reduction of Asat and Chl, Fig. 2a, d), thus confirming that poplar 546 is a very sensitive species to O3 (Shang et al, 2017). E-O3 significantly increased Ci and decreased Asat and Chl, respectively, but did not significantly affect gs (Figs.…”

Section: Effect Of O3 Applicationsupporting

confidence: 79%

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Effects of elevated ozone concentration and nitrogen addition on ammonia stomatal compensation point in a poplar clone

Shang

et al. 2018

Environmental Pollution

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The stomatal compensation point of ammonia (χ) is a key factor controlling plant-atmosphere NH exchange, which is dependent on the nitrogen (N) supply and varies among plant species. However, knowledge gaps remain concerning the effects of elevated atmospheric N deposition and ozone (O) on χ for forest species, resulting in large uncertainties in the parameterizations of NH incorporated into atmospheric chemistry and transport models (CTMs). Here, we present leaf-scale measurements of χ for hybrid poplar clone '546' (Populusdeltoides cv. 55/56 x P. deltoides cv. Imperial) growing in two N treatments (N0, no N added; N50, 50 kg N ha yr urea fertilizer added) and two O treatments (CF, charcoal-filtered air; E-O, non-filtered air plus 40 ppb) for 105 days. Our results showed that χ was significantly reduced by E-O (41%) and elevated N (19%). The interaction of N and O was significant, and N can mitigate the negative effects of O on χ. Elevated O significantly reduced the light-saturated photosynthetic rate (A) and chlorophyll (Chl) content and significantly increased intercellular CO concentrations (Ci), but had no significant effect on stomatal conductance (g). By contrast, elevated N did not significantly affect all measured photosynthetic parameters. Overall, χ was significantly and positively correlated with A, g and Chl, whereas a significant and negative relationship was observed between χ and Ci. Our results suggest that O-induced changes in A, Ci and Chl may affect χ. Our findings provide a scientific basis for optimizing parameterizations of χ in CTMs in response to environmental change factors (i.e., elevated N deposition and/or O) in the future.

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Section: Effect Of O3 Applicationsupporting

confidence: 93%

Section: Effect Of O3 Applicationsupporting

confidence: 79%

Effects of elevated ozone concentration and nitrogen addition on ammonia stomatal compensation point in a poplar clone

Shang

et al. 2018

Environmental Pollution

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“…Low LMA values mean that leaves may be easily grazed and high values that leaves may be more protected (Yamasaki and Kikuzawa 2003;Howe and Jander 2008;War et al 2012). Elevated O 3 levels suppress photosynthetic activities (Sitch et al 2007;Koike et al 2013;Watanabe et al 2017; Grulke and Heath 2020), and photosynthesis is strongly correlated with LMA (Koike 1988;Poorter et al 2009), meaning that elevated O 3 can decrease LMA through physiological responses (Li et al 2015;Shang et al 2017).…”

Section: What Factor Is Important For Insect Grazing Under Elevated Omentioning

confidence: 99%

Ozone disrupts the communication between plants and insects in urban and suburban areas: an updated insight on plant volatiles

et al. 2021

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Plant–insect interactions are basic components of biodiversity conservation. To attain the international Sustainable Development Goals (SDGs), the interactions in urban and in suburban systems should be better understood to maintain the health of green infrastructure. The role of ground-level ozone (O3) as an environmental stress disrupting interaction webs is presented. Ozone mixing ratios in suburbs are usually higher than in the center of cities and may reduce photosynthetic productivity at a relatively higher degree. Consequently, carbon-based defense capacities of plants may be suppressed by elevated O3 more in the suburbs. However, contrary to this expectation, grazing damages by leaf beetles have been severe in some urban centers in comparison with the suburbs. To explain differences in grazing damages between urban areas and suburbs, the disruption of atmospheric communication signals by elevated O3 via changes in plant-regulated biogenic volatile organic compounds and long-chain fatty acids are considered. The ecological roles of plant volatiles and the effects of O3 from both a chemical and a biological perspective are presented. Ozone-disrupted plant volatiles should be considered to explain herbivory phenomena in urban and suburban systems.

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“…Key photosynthesis characteristics include the stomatal conductance, net photosynthetic rate, transpiration rate, and intercellular CO 2 concentration [65,66]. The strength of photosynthesis is closely related to genetic characteristics, and is also affected by external environmental factors, such as temperature, light, and humidity [67][68][69][70]. In P. koraiensis, photosynthetic characteristics were investigated in relation to nitrogen utilization [71], different light conditions [72], various stress treatments [73], CO 2 concentration changes [74], and needle age [71].…”

Section: Other Related Research Work On Pinus Koraiensismentioning

confidence: 99%

Genetic Improvement of Pinus koraiensis in China: Current Situation and Future Prospects

Liu

Wei

et al. 2020

Forests

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Pinus koraiensis (Sieb.et Zucc) is an economically and ecologically important tree species, naturally distributed in northeastern China. Conservation efforts and genetic improvement for this species began in the 1960s and 1980s, with the establishment of several primary seed orchards based on range-wide provenance evaluations. The original breeding objective was to improve growth and wood yield, but during the recent decade, it was redefined to include other traits, such as an enhancement of wood properties, seed oil content, cone yield, and the development of elite provenance with families, clones, and varieties with good tolerance to biotic and abiotic stresses. However, improvement processes are slow due to a long breeding cycle, and the number of improved varieties is still low. In this review, we summarize the recent progress in the selective improvement of P. koraiensis varieties, such as elite provenance, family, and clones, using various breeding procedures. We collate information on advances in the improvement of P. koraiensis, based on conventional breeding and molecular marker-assisted breeding methods; identify gaps in our understanding of the tree improvement processes; and propose future research directions, which will provide new insight for subsequent genetic breeding research on P. koraiensis.

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Ozone exposure- and flux-based response relationships with photosynthesis, leaf morphology and biomass in two poplar clones

Cited by 76 publications

References 57 publications

Effects of elevated ozone concentration and nitrogen addition on ammonia stomatal compensation point in a poplar clone

Effects of elevated ozone concentration and nitrogen addition on ammonia stomatal compensation point in a poplar clone

Ozone disrupts the communication between plants and insects in urban and suburban areas: an updated insight on plant volatiles

Genetic Improvement of Pinus koraiensis in China: Current Situation and Future Prospects

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