Photosynthetic characteristics, antioxidant capacity and biomass yield of wheat exposed to intermittent light irradiation with millisecond-scale periods

Dong, Chen; Shao, Lingzhi; Liu, Guanghui; Wang, Minjuan; Liu, Hui; Xie, Bingyan; Li, Bowei; Fu, Yuming; Hong, Liu

doi:10.1016/j.jplph.2015.06.012

Cited by 41 publications

(16 citation statements)

References 43 publications

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“…For the weight of grains, there are also contradictory outcomes. Some studies confirmed that wheat grain weight was not affected or increased under shading conditions initiated either before (Dong et al., 2015; Inurreta‐Aguirre et al., 2018; Li et al., 2010) or after anthesis (Xu et al., 2016), while other authors reported a negative effect of pre‐anthesis (Dufour et al., 2013) and post‐anthesis shading (Chen et al., 2013; Dong et al., 2014).…”

Section: Discussionmentioning

confidence: 86%

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Wheat and barley cultivars show plant traits acclimation and increase grain yield under simulated shade in Mediterranean conditions

Arenas-Corraliza

López‐Díaz

Rolo

et al. 2020

J Agronomy Crop Science

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Agroforestry systems are reported as climate‐resilient productive systems, but it is yet unclear how tree shade affects crops performance. The aim of this work was to assess how the phenology, plant traits and grain yield of wheat and barley were affected by shade. In an open greenhouse experiment, we cultivated in pots nine cultivars differing in precocity for each species and imposed three artificial shading levels (S0 ~ 0%, S1 ~ 25%, S2 ~ 50%) at the start of cereal booting. Our results showed that shade speeded up first growth stages in both species, until the starting of milk development. Barley showed consistent phenological responses to the three irradiance levels among cultivars, but not wheat that showed larger phenological differences among cultivars at moderate shade. Deep shade prolonged the time needed for wheat grain ripening. Both species increased grain yield by 15%–20% with shade, driven by shade‐acclimations of plant traits that differed among species. For wheat, grain yield was determined by the assemblage of traits that contribute to yield, such as grain weight, precocity and non‐photochemical quenching, while, for barley, SPAD value, precocity to reach phenological stages, grains per spike and plant height had the strongest influence. These traits varied widely among cultivars and seem of interest to identify best suited cultivars for shading conditions of Mediterranean agroforestry systems.

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Section: Discussionmentioning

confidence: 86%

“…Reported shade effects due to the reduction of light intensity include changes in the morphology, physiology, biomass, grain yield and quality of crops (Dong et al., 2015; Wang et al., 2015). For instance, in Mediterranean agroforestry systems, it has been found that deciduous tree shade negatively affected wheat (Dufour et al., 2013).…”

Section: Introductionmentioning

confidence: 99%

Wheat and barley cultivars show plant traits acclimation and increase grain yield under simulated shade in Mediterranean conditions

Arenas-Corraliza

López‐Díaz

Rolo

et al. 2020

J Agronomy Crop Science

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“…Effective canopy architecture provides a suitable leaf layout and space structure for adaptation to different light radiation environments ( Zhang et al, 2003 ; Dong et al, 2015 ). Optimal canopy architecture delays leaf senescence by adjusting the temperature and humidity to allow interception of more light radiation.…”

Section: Discussionmentioning

confidence: 99%

Approach to Higher Wheat Yield in the Huang-Huai Plain: Improving Post-anthesis Productivity to Increase Harvest Index

Duan

Zhou

et al. 2018

Front. Plant Sci.

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Both increased harvest index (HI) and increased dry matter (DM) are beneficial to yield; however, little is known about the priority of each under different yield levels. This paper aims to determine whether HI or DM is more important and identify the physiological attributes that act as indicators of increased yield. Two field experiments involving different cultivation patterns and water-nitrogen modes, respectively, were carried out from 2013 to 2016 in Huang-Huai Plain, China. Plant DM, leaf area index (LAI), and radiation interception (RI) were measured. Increased yield under low yield levels <7500 kg ha-1 was attributed to an increase in both total DM and HI, while increases under higher yield levels >7500 kg ha-1 were largely dependent on an increase in HI. Under high yield levels, HI showed a significant negative correlation with total DM and a parabolic relationship with net accumulation of DM during filling. Higher net accumulation of DM during filling helped slow down the decrease in HI, thereby maintaining a high value. Moreover, net DM accumulation during filling was positively correlated with yield, while post-anthesis accumulation showed a significant linear relationship with leaf area potential (LAP, R2 = 0.404–0.526) and radiation interception potential (RIP, R2 = 0.452–0.576) during grain filling. These findings suggest that the increase in LAP and RIP caused an increase in net DM accumulation after anthesis. Under DM levels >13,000 kg ha-1 at anthesis, maintaining higher LAI and RI in lower layers during grain formation contributed to higher yield. Furthermore, the ratio of upper- to lower-layer RI showed a second-order curve with yield during filling, with an increase in the optimal range with grain development. Pre-anthesis translocation amount, translocation ratios and contribution ratios also showed second-order curves under high yield levels, with optimal values of 3000–4500 kg ha-1, 25–35, and 30–50%, respectively. These results confirm the importance of HI in improving the yield, thereby providing a theoretical basis for wheat production in the Huang-Huai Plain.

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“…The leaves were dark‐adapted for 20 min before fluorescence measurements. The effective quantum yield of PSII (ΦPSII) and photosynthetic electron transport (ETR) were calculated by the methods of Dong et al (2015b). The ratio of ΦPSII and the photosynthetic rate ( A ) was used as a surrogate of electrons in excess of C assimilation.…”

Section: Methodsmentioning

confidence: 99%

“…Leaf gas‐exchange parameters included the photosynthetic rate ( A ), stomatal conductance ( g s ) and intercellular CO 2 concentration ( C i ) of the second leaf at the wheat terminal bud. The intrinsic water use efficiency ( A / g s ) was calculated by dividing A by g s , and the instantaneous carboxylation efficiency ( A / C i ) was also calculated (Dong et al, 2015b).…”

Section: Methodsmentioning

confidence: 99%

Wheat Carbon Dioxide Responses in Space Simulations Conducted at the Chinese Lunar Palace‐1

et al. 2016

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Since the industrial revolution, anthropogenic activities, such as fossil fuel use and deforestation, have caused a dramatic increase in the atmospheric CO 2 concentration. To understand how the growth and development in cereal crops may respond to elevated CO 2 , it is necessary to determine if the leaves of crops grown in a closed artifi cial ecosystem have a fully developed photosynthetic apparatus and whether or not photosynthesis in these leaves is more responsive to an elevated CO 2 concentration. To address this issue, we evaluated the response of the photosynthetic characteristics, antioxidant capacity, and water use effi ciency of wheat (Triticum aestivum L.) under four CO 2 concentrations (500, 1000, 3000, and 5000 ppm) for 3 d in Lunar Palace-1, which is the fi rst bioregenerative life support system developed in China. Th e results showed that wheat cultivated at 1000 ppm from vegetative growth to maturity was characterized by more appropriate relative water content, membrane stability index, photosynthetic rate, chlorophyll concentration, and antioxidant capacity, which was more benefi cial to growth and development in a closed artifi cial environment. Th ere were signifi cant eff ects with increased CO 2 concentration on the eff ective quantum yield of PSII and photosynthetic electron transport of wheat plants. Furthermore, elevated CO 2 controlled the transpiration rate, which enhanced water use effi ciency. During ripening, wheat aging may be accelerated by elevated CO 2 , which promotes grain growth and maturing. photon fl ux density; ROS, radical oxygen species; RWC, relative water content; WUE, water use effi ciency; FPSII, eff ective quantum yield of PSII.

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Photosynthetic characteristics, antioxidant capacity and biomass yield of wheat exposed to intermittent light irradiation with millisecond-scale periods

Cited by 41 publications

References 43 publications

Wheat and barley cultivars show plant traits acclimation and increase grain yield under simulated shade in Mediterranean conditions

Wheat and barley cultivars show plant traits acclimation and increase grain yield under simulated shade in Mediterranean conditions

Approach to Higher Wheat Yield in the Huang-Huai Plain: Improving Post-anthesis Productivity to Increase Harvest Index

Wheat Carbon Dioxide Responses in Space Simulations Conducted at the Chinese Lunar Palace‐1

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