Growth, morphological and photosynthetic characteristics, antioxidant capacity, biomass yield and water use efficiency of Gynura bicolor DC exposed to super-elevated CO2

Wang, Minjuan; Dong, Chen; Fu, Yuming; Hong, Liu

doi:10.1016/j.actaastro.2015.05.010

Cited by 17 publications

(9 citation statements)

References 62 publications

(72 reference statements)

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“…). Similarly, the H 2 O 2 content was shown to increase under eCO 2 in both tomato and Arabidopsis (Shi et al , Wang et al ). Furthermore, exogenous H 2 O 2 enhances the thermotolerance of Festuca arundinacea and Lolium perenne (Wang et al ).…”

Section: Discussionmentioning

confidence: 93%

Stomatal movements are involved in elevated CO₂‐mitigated high temperature stress in tomato

Zhang

Pan

et al. 2018

Physiologia Plantarum

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Climate changes such as heat waves often affect plant growth and pose a growing threat to natural and agricultural ecosystems. Elevated atmospheric CO can mitigate the negative effects of heat stress, but the underlying mechanisms remain largely unclear. We examined the interactive effects of elevated CO (eCO ) and temperature on the generation of the hydrogen peroxide (H O ) and stomatal movement characteristics associated with heat tolerance in tomato seedlings grown under two CO concentrations (400 and 800 µmol mol ) and two temperatures (25 and 42°C). eCO ameliorated the negative effects of heat stress, which was accompanied by greater amounts of RESPIRATORY BURST OXIDASE 1 (RBOH1) transcripts, apoplastic H O accumulation and decreased stomatal aperture. Silencing RBOH1 and SLOW-TYPE ANION CHANNEL, impeded eCO -induced stomatal closure and compromised the eCO -enhanced water use efficiency as well as the heat tolerance. Our findings suggest that RBOH1-dependent H O accumulation was involved in the eCO -induced stomatal closure, which participate in maintaining balance between water retention and heat loss under eCO concentrations. This phenomenon may be a contributor to eCO -induced heat tolerance in tomato, which will be critical for understanding how plants respond to both future climate extremes and changes in CO .

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Section: Discussionmentioning

confidence: 93%

Stomatal movements are involved in elevated CO₂‐mitigated high temperature stress in tomato

Zhang

Pan

et al. 2018

Physiologia Plantarum

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“…; Wang et al . ). Furthermore, it is essential to influence development of the photosynthetic apparatus and functioning under microgravity in space (Stutte et al .…”

Section: Discussionmentioning

confidence: 97%

“…Many studies have demonstrated that plant growth in space can be severely impaired, often due not to the direct effect of microgravity or other space factors, but to their indirect effects (De Micco et al 2011). Plant photosynthesis is key for the regenerating atmosphere (i.e., CO 2 removal and O 2 production) in proposed space missions of long duration, because it is the fundamental biological process for food production (Wheeler et al 2001;Wang et al 2015a). Furthermore, it is essential to influence development of the photosynthetic apparatus and functioning under microgravity in space (Stutte et al 2006).…”

Section: Discussionmentioning

confidence: 99%

“…; Wang et al . ). CO 2 enrichment has been shown to increase plant growth, development and yield of agricultural crops, and this response is a function of CO 2 concentration and duration (Ainsworth & Long ; Bunce ; Högy et al .…”

Section: Introductionmentioning

confidence: 97%

“…During the last 200 years, atmospheric CO 2 concentration has increased from a pre-industrial level of 280-384 ppm, is still increasing and is predicted to double over this century (IPCC 2007). CO 2 levels in closed systems such as growth chambers, greenhouses, plant factories and Life Support Systems (LSS) can easily exceed this concentration and maintain higher CO 2 concentrations (Wheeler et al 1999;Wang et al 2015a). CO 2 enrichment has been shown to increase plant growth, development and yield of agricultural crops, and this response is a function of CO 2 concentration and duration (Ainsworth & Long 2005;Bunce 2008;H€ ogy et al 2010).…”

Section: Introductionmentioning

confidence: 99%

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Elevated CO₂ enhances photosynthetic efficiency, ion uptake and antioxidant activity of Gynura bicolor DC. grown in a porous‐tube nutrient delivery system under simulated microgravity

Wang

Dong

et al. 2016

Plant Biol J

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It is well known that plants can grow under space conditions, however, perturbations of many biological phenomena have been highlighted due to the effect of altered gravity and its possible interaction with other factors (e.g., CO2 , ion radiation, etc. Our aim was to test whether elevated CO2 could provide 'protection' to Gynura bicolor against the damaging effects of simulated microgravity (SM) on photosynthesis, ion uptake and antioxidant activity. As compared to G. bicolor grown in ambient CO2 with no SM (ACO2 ), growth and yield of the plants increased under elevated ambient CO2 with no SM (ECO2 ) and decreased under ACO2 +SM, whereas there was no significant effect on ECO2 +SM. Reductions in the content of Chl a, carotenoids and Chl a+b were 17.9%, 20.7% and 17.9% under ACO2 +SM, respectively, but under ECO2 there was a significant effect on all photosynthetic pigments except Chl b, compared to ACO2 . Photosynthesis was improved under ECO2 with SM and such an improvement was associated with improved water use efficiency and instantaneous carboxylation efficiency. Furthermore, SM caused a reduction in ion absorption rate, except for Ca(2+) , while ECO2 increased the uptake rate. Finally, the activity of SOD, POD and the content of MDA and H2 O2 were enhanced under SM treatments and were highest in ACO2 +SM. In contrast, T-AOC activity and GSH content significantly declined in ACO2 +SM compared to other treatments. These results suggest that ACO2 is not sufficient to counteract SM impact, but the increase is usually caused by improvement in CO2 nutrition in ECO2 +SM in comparison with ACO2 +SM.

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Unexpected decrease in yield and antioxidants in vegetable at very high CO2 levels

Shao

Liu

et al. 2015

Environ Chem Lett

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Growth, morphological and photosynthetic characteristics, antioxidant capacity, biomass yield and water use efficiency of Gynura bicolor DC exposed to super-elevated CO2

Cited by 17 publications

References 62 publications

Stomatal movements are involved in elevated CO₂‐mitigated high temperature stress in tomato

Stomatal movements are involved in elevated CO₂‐mitigated high temperature stress in tomato

Elevated CO₂ enhances photosynthetic efficiency, ion uptake and antioxidant activity of Gynura bicolor DC. grown in a porous‐tube nutrient delivery system under simulated microgravity

Unexpected decrease in yield and antioxidants in vegetable at very high CO2 levels

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Growth, morphological and photosynthetic characteristics, antioxidant capacity, biomass yield and water use efficiency of Gynura bicolor DC exposed to super-elevated CO2

Cited by 17 publications

References 62 publications

Stomatal movements are involved in elevated CO2‐mitigated high temperature stress in tomato

Stomatal movements are involved in elevated CO2‐mitigated high temperature stress in tomato

Elevated CO2 enhances photosynthetic efficiency, ion uptake and antioxidant activity of Gynura bicolor DC. grown in a porous‐tube nutrient delivery system under simulated microgravity

Unexpected decrease in yield and antioxidants in vegetable at very high CO2 levels

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Stomatal movements are involved in elevated CO₂‐mitigated high temperature stress in tomato

Stomatal movements are involved in elevated CO₂‐mitigated high temperature stress in tomato

Elevated CO₂ enhances photosynthetic efficiency, ion uptake and antioxidant activity of Gynura bicolor DC. grown in a porous‐tube nutrient delivery system under simulated microgravity