Acclimation of winter wheat (Triticum aestivum, cv. Yangmai 13) to low levels of solar irradiance

Zheng, Yu; Mai, Boru; Wu, Rongrong; Feng, Yuting; Sofo, Adriano; Ni, Yaru; Sun, Jian; Li, J.; Xu, Jing

doi:10.1007/s11099-011-0055-6

Cited by 23 publications

(18 citation statements)

References 29 publications

(36 reference statements)

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“…This photoprotection process is also shown in the NPQ parameter in our study, which was found to be higher in barley grown under low irradiance when exposed to high light conditions, revealing that excessive light energy was dispersed through non-photochemical reactions. However, no significant differences were found in wheat in the Carot/Chl ratio nor in the NPQ, even though some authors reported this acclimation for wheat cultivars 38 in a region with lower solar irradiance intensity than the Mediterranean. Therefore, barley clorophyll pigments helped this species to acclimate to shade, in contrast with wheat, that did not show this adaptative response in our study.…”

Section: Discussionmentioning

confidence: 85%

Wheat and barley can increase grain yield in shade through acclimation of physiological and morphological traits in Mediterranean conditions

Arenas-Corraliza

Rolo

López‐Díaz

et al. 2019

Sci Rep

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Major cereal yields are expected to decline significantly in coming years due to the effects of climate change temperature rise. Agroforestry systems have been recognized as a useful land management strategy that could mitigate these effects through the shelter provided by trees, but it is unclear how shade affects cereal production. Most cereal species and cultivars have been selected for full light conditions, making it necessary to determine those able to acclimate to low irradiance environments and the traits that drive this acclimation. A greenhouse experiment was conducted in central Spain to assess the photosynthetic response, leaf morphology and grain yield of nine cultivars of winter wheat ( Triticum aestivum L.) and barley ( Hordeum vulgare L.) at three levels of photosynthetic active radiation (100%, 90% and 50%). Cultivars were selected according to three different precocity categories and were widely used in the studied area. The main objective was to assess whether the species and cultivars could acclimate to partial shade through physiological and morphological acclimations and thus increase their grain yield for cultivation in agroforestry systems. Both species increased grain yield by 19% in shade conditions. However, they used different acclimation strategies. Barley mostly performed a physiological acclimation, while wheat had a major morphological adjustment under shaded environment. Barley had lower dark respiration (42%), lower light compensation point (73%) and higher maximum quantum yield (48%) than wheat in full light conditions, revealing that it was a more shade-tolerant species than wheat. In addition, to acclimate to low irradiance conditions, barley showed a 21% reduction of the carotenoids/chlorophyll ratio in the lowest irradiance level compared to 100% light availability and adjusted the chlorophyll a/b ratio, photosystem II quantum efficiency, electron transport rate and non-photochemical quenching to shade conditions. On the other hand, wheat showed a 48% increase in single leaf area in the 50% irradiance level than in full light to maximize light capture. Our results showed that current commercialized wheat and barley cultivars had sufficient plasticity for adaptation to shade, supporting tree presence as a tool to reduce the negative effects of climate change.

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Section: Discussionmentioning

confidence: 85%

Wheat and barley can increase grain yield in shade through acclimation of physiological and morphological traits in Mediterranean conditions

Arenas-Corraliza

Rolo

López‐Díaz

et al. 2019

Sci Rep

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“…Brugnoli et al (1998) reported that in maize (C4) and Hedera helix (C3), shade leaves have lower ΦPSII than the sun leaves. Zheng et al (2011) also showed that ΦPSII decreased with increased shading in the canopy of winter wheat. Therefore, it is suggested that the lower ΦPSII in lower leaves at SPD was caused by mutual shading of leaves.…”

Section: Discussionmentioning

confidence: 88%

Light reacclimatization of lower leaves in C<sub>4 </sub>maize canopies grown at two planting densities

Yabiku¹,

Akamatsu²,

Ueno³

2020

Photosynt.

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C4 plants have high photosynthetic capacity but are inefficient under low light. In a canopy, lower leaves developed under high light are progressively shaded. To elucidate how lower leaves in a C4 canopy reacclimatize to low light, we investigated maize canopies differing in light environment grown at standard and low planting densities (SPD, LPD). Although upper leaves at SPD and both upper and lower leaves at LPD had light-response curves of photosynthesis of sun leaves, lower leaves at SPD had that of shade leaves. All leaves at both densities had anatomical framework of sun leaves, but the chloroplast content in mesophyll and bundle-sheath cells of lower leaves at SPD was greatly reduced to reacclimatize to low light. This study demonstrates that lower leaves at SPD reacclimatize to low light by adjusting their physiological and chloroplast traits while maintaining anatomical framework, whereas those at LPD behave as sun leaves.

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“…Subsequently, CO 2 is fixed in the form of carbohydrates, and O 2 is produced in light-independent reactions (Tanaka et al, 2014;Walker et al, 2014). Insufficient light intensity may limit the assimilation of plant carbon and reduce the activity of carbon assimilation enzymes (Allen and Ort, 2001;Dai et al, 2009), thereby reducing the net photosynthetic rate (P n ), effective quantum yield of photosystem II photochemistry (F PSII ), and electron transport rate (ETR) (Yan et al, 2013;Zheng et al, 2011). Although low light intensities increase plant height and specific leaf area, this factor reduces the leaf number (LN), leaf thickness, and yield (Dong et al, 2014;Hou et al, 2010;Steinger et al, 2003).…”

mentioning

confidence: 99%

Growth, Photosynthesis, and Nutrient Uptake at Different Light Intensities and Temperatures in Lettuce

Zhou¹,

Li²,

Wang³

et al. 2019

horts

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Light and temperature are two crucial factors affecting plant growth. Light intensities vary considerably with season and weather conditions. Reasonable light regulation at different temperatures is a key issue in environmental regulation. In this study, we determined the effects of light intensity and temperature on crop growth and development. Furthermore, we determined an optimal light value and a suitable light range at different temperatures for producing the lettuce Lactuca sativa L. Artificial climate chamber experiments were conducted at five light intensities (100, 200, 350, 500, and 600 μmol·m−2·s−1), as well as at low (15 °C/10 °C), medium (23 °C/18 °C), and high (30 °C/25 °C) temperatures. In these experiments, we investigated the photosynthetic rate; chlorophyll fluorescence parameters; total N, P, and K uptake; and growth of lettuce plants. The results indicated that at a low temperature, the values of effective quantum yield of photosystem II photochemistry (ΦPSII), net photosynthetic rate (Pn), stomatal conductance (gS), and transpiration rate (Tr) —as well as those of N, K, and P uptake—were the highest at 350 μmol·m−2·s−1, followed by 500 μmol·m−2·s−1, which resulted in higher values for leaf number (LN), leaf area (LA), dry weight (DW), and fresh weight (FW). At the medium temperature, the values of ΦPSII, Pn, gS, and Tr, as well as those of N, K, and P uptake were higher at 350, 500, and 600 μmol·m−2·s−1 than at other light intensities, resulting in high values for LN, LA, DW, and FW of lettuce plants. The LN, LA, and FW of lettuce plants were the highest at 500 μmol·m−2·s−1, whereas DW was the highest at 600 μmol·m−2·s−1. At a high temperature, lettuce plants exhibited the highest values of Fv/Fm, ΦPSII, Pn, gS, and Tr, as well as those of N, K, and P uptake for the 500 μmol·m−2·s−1 treatment; whereas LN, LA, FW, and DW were the highest at 600 μmol·m−2·s−1. In addition, the values of Fv/Fm indicated that lettuce plants were under stress under the following combinations: 600 μmol·m−2·s−1 at the low temperature, 100 μmol·m−2·s−1 at the medium temperature, and 100–350 μmol·m−2·s−1 at the high temperature. Based on these results, an optimal regulation strategy for light intensity at different temperature environments was proposed for lettuce cultivars similar to L. sativa L. in some regions, such as the subtropical regions of China. Specifically, for low temperatures, light intensities of 350 to 500 μmol·m−2·s−1are recommended for production, and an intensity of 350 μmol·m−2·s−1 provides optimal supplementary light during early spring and winter in greenhouses. For medium temperatures, light intensities of 350 to 600 μmol·m−2·s−1 are recommended, and 500 μmol·m−2·s−1 is the optimal value during the middle of spring and autumn. For high temperatures, light intensities of 500 to 600 μmol·m−2·s−1are recommended, and 600 μmol·m−2·s−1 is the optimal value of light intensity during late spring and early autumn.

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Acclimation of winter wheat (Triticum aestivum, cv. Yangmai 13) to low levels of solar irradiance

Cited by 23 publications

References 29 publications

Wheat and barley can increase grain yield in shade through acclimation of physiological and morphological traits in Mediterranean conditions

Wheat and barley can increase grain yield in shade through acclimation of physiological and morphological traits in Mediterranean conditions

Light reacclimatization of lower leaves in C<sub>4 </sub>maize canopies grown at two planting densities

Growth, Photosynthesis, and Nutrient Uptake at Different Light Intensities and Temperatures in Lettuce

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