Changes in leaf area, nitrogen content and canopy photosynthesis in soybean exposed to an ozone concentration gradient

Oikawa, Shimpei; Ainsworth, Elizabeth A.

doi:10.1016/j.envpol.2016.05.005

Cited by 27 publications

(18 citation statements)

References 53 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Most studies about ozone exposure-and flux-response relationships are based on crop yields (Betzelberger et al, 2010;Feng et al, 2012;Grunhage et al, 2012;Pleijel et al, 2007), tree biomass and visible injury symptoms (Marzuoli et al, 2009;Sicard et al, 2016). However, studies on ozone response relationships with physiological parameters are rare (Bagard et al, 2015;Oikawa and Ainsworth, 2016), and their dependence on plant developmental and seasonal changes has not been well characterized. Our goal is to establish an ozone response relationship for poplar on photosynthetic parameters, leaf morphology parameters and biomass parameters, which could represent relevant indicators of early responses to ozone (Bagard et al, 2015) and to provide parameters for supporting risk assessment.…”

Section: Introductionmentioning

confidence: 99%

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

Shang

Feng

Пин

et al. 2017

Science of The Total Environment

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

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

Shang

Feng

Пин

et al. 2017

Science of The Total Environment

View full text Add to dashboard Cite

“…Leaf chlorophyll is an intrinsic factor influencing photosynthesis, and SPAD value is related to chlorophyll content ( Uddling et al, 2007 ; Hu et al, 2014 ; Bąba et al, 2016 ). PPFD in crop canopy can be representative of plant canopy size and total leaf area ( Oikawa and Ainsworth, 2016 ), and a crop with a larger canopy can have greater photosynthesis ( Radicetti et al, 2012 ). In our study, legume seed yield was positively related to chlorophyll but was negatively related to PPFD, which was consistent with recent reports by other researchers ( Oikawa and Ainsworth, 2016 ).…”

Section: Discussionmentioning

confidence: 99%

“…PPFD in crop canopy can be representative of plant canopy size and total leaf area ( Oikawa and Ainsworth, 2016 ), and a crop with a larger canopy can have greater photosynthesis ( Radicetti et al, 2012 ). In our study, legume seed yield was positively related to chlorophyll but was negatively related to PPFD, which was consistent with recent reports by other researchers ( Oikawa and Ainsworth, 2016 ). Our results showed that diversifying crop rotation improved canopy size and leaf chlorophyll status for pea and chickpea, leading to enhanced photosynthesis and productivity, but such an effect was not detected for lentil.…”

Section: Discussionmentioning

confidence: 99%

“…Crop canopy has the dominant role of absorbing solar radiation and CO 2 necessary for photosynthesis, N 2 fixation, and carbon sequestration. As a key zone of interaction between legumes and soils ( Baron et al, 2013 ; Oikawa and Ainsworth, 2016 ), legume root–nodule systems play vital roles in soil nutrient and water acquisition, and symbiotic N 2 fixation ( Carranca et al, 2015 ). Strategies to synchrony soil nutrient supply and crop demand ( Chen et al, 2011 ; Zhang et al, 2011 ) are of importance for enhancing N use efficiency and crop productivity ( Siddique et al, 2012 ; Carranca et al, 2015 ).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Soil–Plant Indices Help Explain Legume Response to Crop Rotation in a Semiarid Environment

Liu

Zhang

et al. 2018

Front. Plant Sci.

View full text Add to dashboard Cite

Crop productivity is typically affected by various soil–plant factors systematically as they influence plant photosynthesis, soil fertility, and root systems. However, little is known about how the productivity of legumes is related to crop rotation systems. The objectives of this study were to determine the effect of rotation systems on legume productivity and the relationships among legume productivity and soil–plant factors. Three annual legumes – chickpea (Cicer arietinum L.), pea (Pisum sativum L.), and lentil (Lens culinaris Medikus), were included in various diversified rotation systems and compared with legume monoculture in the 8-year rotation study. Soil N and water conditions, and canopy and root systems were evaluated at the end of 8-year rotation in the semiarid Canadian prairies. Results showed that diversified rotation systems improved leaf greenness by 4%, shoot biomass by 25%, nodule biomass by 44%, and seed yield by 95% for chickpea and pea, but such effects were not found for lentil. Pea monocultures increased root rot severity by threefold compared with diversified rotations, and chickpea monoculture increased shoot rot severity by 23%, root rot severity by 96% and nodule damage by 219%. However, all the legume monocultures improved soil N accumulation by an average 38% compared to diversified systems. Pea and chickpea displayed considerable sensitivity to plant biotic stresses, whereas lentil productivity had a larger dependence on initial soil N content. The 8-year study concludes that the rotational effect on legume productivity varies with legume species, the frequency of a legume appearing in the rotation, and the integration of relevant soil and plant indices.

show abstract

“…Increased specific leaf area, whole‐plant leaf‐area to biomass ratio and whole‐plant leaf‐area to root biomass ratio would increase carbon acquisition at the cost of higher transpiring surface per unit of carbon fixation (Poorter , Brunner et al ). The enhanced whole‐plant height to biomass ratio (HMR) and total leaf area/root biomass imply that eO 3 also restricts the uptake capacity of root for higher transpiring leaf surface of soybean plants (Sultan , Oikawa and Ainsworth ). These altered growth patterns would have important consequences for plant hydraulic properties and plant water relations, which can potentially affect the growth and survival of O 3 ‐sensitive species under O 3 pollution and changing climate in the future (Grantz , Wilkinson and Davies , Grantz et al ).…”

Section: Discussionmentioning

confidence: 99%

Elevated ozone concentration decreases whole‐plant hydraulic conductance and disturbs water use regulation in soybean plants

Zhang

Wang

et al. 2018

Physiologia Plantarum

View full text Add to dashboard Cite

Elevated tropospheric ozone (O ) concentration has been shown to affect many aspects of plant performance including detrimental effects on leaf photosynthesis and plant growth. However, it is not known whether such changes are accompanied by concomitant responses in plant hydraulic architecture and water relations, which would have great implications for plant growth and survival in face of unfavorable water conditions. A soybean (Glycine max (L.) Merr.) cultivar commonly used in Northeast China was exposed to non-filtered air (NF, averaged 24.0 nl l ) and elevated O concentrations (eO , 40 nl l supplied with NF air) in six open-top chambers for 50 days. The eO treatment resulted in a significant decrease in whole-plant hydraulic conductance that is mainly attributable to the reduced hydraulic conductance of the root system and the leaflets, while stem and leaf petiole hydraulic conductance showed no significant response to eO . Stomatal conductance of plants grown under eO was lower during mid-morning but significantly higher at midday, which resulted in substantially more negative daily minimum water potentials. Moreover, excised leaves from the eO treated plants showed significantly higher rates of water loss, suggesting a lower ability to withhold water when water supply is impeded. Our results indicate that, besides the direct detrimental effects of eO on photosynthetic carbon assimilation, its influences on hydraulic architecture and water relations may also negatively affect O -sensitive crops by deteriorating the detrimental effects of unfavorable water conditions.

show abstract

Changes in leaf area, nitrogen content and canopy photosynthesis in soybean exposed to an ozone concentration gradient

Cited by 27 publications

References 53 publications

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

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

Soil–Plant Indices Help Explain Legume Response to Crop Rotation in a Semiarid Environment

Elevated ozone concentration decreases whole‐plant hydraulic conductance and disturbs water use regulation in soybean plants

Contact Info

Product

Resources

About