Photosynthetic acclimation and leaf traits of Stipa bungeana in response to elevated CO&lt;sub&gt;2&lt;/sub&gt; under five different watering conditions

Wang, H.; Zhou, Guangsheng; Jiang, Yuying; Shi, Yaohui; Xu, Zhenzhu

doi:10.1007/s11099-016-0239-1

Cited by 10 publications

(5 citation statements)

References 85 publications

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“…Additionally, both of the caespitose and rhizomatous grasses have the similar tiller longevity and bud bank densities, but their growth forms differ in number, distribution, and branch of leaves and tillers (N'Guessan, ; Ott, ). Moreover, photosynthetic characteristics and leaf traits of caespitose grasses differ from rhizomatous grasses (Lulli et al., ; Wang, Zhou, Jiang, Shi, & Xu, ). These different plant traits may result in various response mechanisms between the two grass types to defoliation and water stress.…”

Section: Introductionmentioning

confidence: 85%

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Drought weakens the positive effects of defoliation on native rhizomatous grasses but enhances the drought‐tolerance traits of native caespitose grasses

Zhang

Schellenberg

et al. 2018

Ecology and Evolution

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The objective of this study was to evaluate the drought tolerance, compensatory growth, and different plant traits between two native perennial caespitose grasses and two native rhizomatous grasses in response to drought and defoliation. A randomized complete block design at the Swift Current Research and Development Centre (SCRDC) of Agriculture and Agri‐Food Canada (AAFC) examined the effects of water stress and clipping on the plant biomass, plant morphological traits, and relative leaf chlorophyll content (SPAD value) of four native grasses (caespitose grass: Hesperostipa comata and H. curtiseta; rhizomatous grass: Pascopyrum smithii and Elymus lanceolatus). Drought drastically decreased the shoot and root biomass, plant height, number of tillers and leaf growth of P. smithii and E. lanceolatus, as well as the rhizome biomass and R/S ratio of P. smithii. Defoliation had a positive effect on the shoot biomass of P. smithii and E. lanceolatus under well water treatments (100% and 85% of field capacity). However, the compensatory growth of P. smithii and E. lanceolatus significantly declined with increased water stress. In addition, there are no significant changes in plant biomass, plant height, number of tillers and leaves, and SPAD value of H. comata and H. curtiseta under relative dry condition (70% of field capacity). Consequently, these results demonstrated that the rhizomatous grasses possessed a stronger compensation in response to defoliation under wet conditions, but the positive effects of defoliation can be weakened by drought. The caespitose grasses (Hesperostipa species) exhibited a greater drought tolerance than rhizomatous grasses due to the relatively stable plant traits in response to water stress.

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Section: Introductionmentioning

confidence: 85%

“…Moreover, photosynthetic characteristics and leaf traits of caespitose grasses differ from rhizomatous grasses (Lulli et al, 2011;Wang, Zhou, Jiang, Shi, & Xu, 2017). These different plant traits may result in various response mechanisms between the two grass types to defoliation and water stress.…”

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confidence: 99%

Drought weakens the positive effects of defoliation on native rhizomatous grasses but enhances the drought‐tolerance traits of native caespitose grasses

Zhang

Schellenberg

et al. 2018

Ecology and Evolution

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“…In conclusion, high levels of photosynthesis were sustained under high CO2 concentrations only when other environmental conditions permitted continuous rapid growth (Yilmaz et al 2017) or when plant carbohydratestorage capacity was extensive (Aranjuelo et al 2011), whereas photosynthesis was downregulated when sink activity was limited (Thomas andStrain 1991, Aranjuelo et al 2005). Significant limitations of plant sink activity, and photosynthetic downregulation, can be imposed by various conditions on their own or in combination (Demmig- Adams et al 2017, such as a low supply of nutrients or water (Porras et al 2017, Wang et al 2017, Tausz-Posch et al 2020, restricted root expansion (Andrade et al 1993, Poorter et al 2012, or genetic constraints to either fast growth (Poorter et al 1990) or efficient nitrogen uptake and utilization (Adavi and Sathee 2021a, Padhan et al 2020). Photosynthetic downregulation is a result of a series of regulatory events, where carbohydrate build-up feeds back into the photosynthetic electron transport chain (Fig.…”

Section: Literature Synthesismentioning

confidence: 99%

Intersections: photosynthesis, abiotic stress, and the plant microbiome

Adams¹,

Polutchko²,

Zenir³

et al. 2022

Photosynt.

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“…The reduction in biomass and photosynthetic rate under water deficiency may be due to stomatal limitation or non-stomatal limitation (Yu et al, 2012;Wang et al, 2017). The former is typically caused by stomatal number, stomatal distribution pattern, and stomatal opening (Fan et al, 2020;Zheng et al, 2020), while the latter is attributed to metabolic disorders such as imbalance of carbon sink and source or reduced carboxylation efficiency due to reduced Rubisco activity (Parry et al, 2003;Aranjuelo et al, 2011).…”

Section: Discussionmentioning

confidence: 99%

Effects of elevated CO2 concentration and experimental warming on morphological, physiological, and biochemical responses of winter wheat under soil water deficiency

Chang

Hao

et al. 2023

Front. Plant Sci.

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Global climate change and freshwater scarcity have become two major environmental issues that constrain the sustainable development of the world economy. Climate warming caused by increasing atmospheric CO2 concentration can change global/regional rainfall patterns, leading to uneven global seasonal precipitation distribution and frequent regional extreme drought events, resulting in a drastic reduction of available water resources during the critical crop reproduction period, thus causing many important food-producing regions to face severe water deficiency problems. Understanding the potential processes and mechanisms of crops in response to elevated CO2 concentration and temperature under soil water deficiency may further shed lights on the potential risks of climate change on the primary productivity and grain yield of agriculture. We examined the effects of elevated CO2 concentration (e[CO2]) and temperature (experimental warming) on plant biomass and leaf area, stomatal morphology and distribution, leaf gas exchange and mesophyll anatomy, rubisco activity and gene expression level of winter wheat grown at soil water deficiency with environmental growth chambers. We found that e[CO2] × water × warming sharply reduced plant biomass by 57% and leaf photosynthesis (Pn) 50%, although elevated [CO2] could alleviated the stress from water × warming at the amount of gene expression in RbcL3 (128%) and RbcS2 (215%). At ambient [CO2], the combined stress of warming and water deficiency resulted in a significant decrease in biomass (52%), leaf area (50%), Pn (71%), and Gs (90%) of winter wheat. Furthermore, the total nonstructural carbohydrates were accumulated 10% and 27% and increased Rd by 127% and 99% when subjected to water × warming and e[CO2] × water × warming. These results suggest that water × warming may cause irreversible damage in winter wheat and thus the effect of “CO2 fertilization effect” may be overestimated by the current process-based ecological model.

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Photosynthetic acclimation and leaf traits of Stipa bungeana in response to elevated CO<sub>2</sub> under five different watering conditions

Cited by 10 publications

References 85 publications

Drought weakens the positive effects of defoliation on native rhizomatous grasses but enhances the drought‐tolerance traits of native caespitose grasses

Drought weakens the positive effects of defoliation on native rhizomatous grasses but enhances the drought‐tolerance traits of native caespitose grasses

Intersections: photosynthesis, abiotic stress, and the plant microbiome

Effects of elevated CO2 concentration and experimental warming on morphological, physiological, and biochemical responses of winter wheat under soil water deficiency

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