Effects of phosphorus application on photosynthetic carbon and nitrogen metabolism, water use efficiency and growth of dwarf bamboo ( Fargesia rufa ) subjected to water deficit

Liu, Chenggang; Wang, Yanjie; Pan, Kaiwen; Jin, Yang; Li, Wei; Zhang, Lin

doi:10.1016/j.plaphy.2015.07.018

Cited by 60 publications

(48 citation statements)

References 36 publications

(59 reference statements)

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“…Previous studies have suggested that P uptake by plant roots further decreases under water deficit conditions (Cramer et al , Sardans and Penuelas ) and that plant growth is dependent on the availability of P. Our findings also revealed that height, stem diameter, leaf area, stem and leaf biomass and LRWC were significantly lower in drought‐stressed seedlings than those in with well‐watered plants which indicates strong sensitivity of E. grandis to water deficits in the soil (Tables and ). The present findings are in line with other studies that were conducted on different forest tree species (Oliveira et al , Liu et al , Tariq et al , ). However, root biomass was similar in the drought‐stressed and well‐watered plants, regardless of P application.…”

Section: Discussionsupporting

confidence: 94%

“…This result clarifies that P application can improve the drought tolerance potential of E. grandis by conserving water, as indicated by the high LRWC (Table ) and the high uptake and assimilation of N (Table ). Previous studies have reported increased P n rates in different plant species under P fertilization, and these results are in line with our findings (Burman et al , Singh et al , Liu et al ). The possible reason behind the high P n rate in response to P fertilization might be due to the improved LRWC, F v /F m and concentration of photosynthetic pigments (Fig.…”

Section: Discussionsupporting

confidence: 94%

“…It has already previously been found that the demand for P is high during the first year of growth, while the demand is lower in later stages, because of internal recycling (Fernandez et al ). The present findings are in line with the results of previous studies (Cicek et al ), but contradicted the results of other studies conducted on other forest tree species (Liu et al , Tariq et al , ). The lack of effect of P fertilization under drought indicates that P uptake was more limited and difficult under low moisture content in the soil than in well‐watered conditions and demonstrates that different species respond differently to P fertilization because they have varied physiological adjustments, nutrient availability and interaction and soil physical properties.…”

Section: Discussionsupporting

confidence: 79%

“…However, the effects of P application on leaf photosynthetic apparatus, osmolyte accumulation, antioxidant system and nitrogenous compound accumulation under drought stress remain unclear. Different studies have suggested that P fertilization improves the drought tolerance of forest tree species by means of physiological and biochemical adjustments (Liu et al ; Tariq et al , ). However, in any of those antecedents, plants responded to P fertilization by increasing growth.…”

Section: Introductionmentioning

confidence: 99%

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Impact of phosphorus application on drought resistant responses of Eucalyptus grandis seedlings

Tariq

Pan

Olatunji

et al. 2019

Physiologia Plantarum

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Eucalyptus grandis is the most widely planted tree species worldwide and can face severe drought during the initial months after planting because the root system is developing. A complete randomized design was used to study the effects of two water regimes (well‐watered and water‐stressed) and phosphorus (P) applications (with and without P) on the morphological and physio‐biochemical responses of E. grandis. Drought had negative effects on the growth and metabolism of E. grandis, as indicated by changes in morphological traits, decreased net photosynthetic rates (Pn), pigment concentrations, leaf relative water contents (LRWCs), nitrogenous compounds, over‐production of reactive oxygen species (ROS) and higher lipid peroxidation. However, E. grandis showed effective drought tolerance strategies, such as reduced leaf area and transpiration rate (E), higher accumulation of soluble sugars and proline and a strong antioxidative enzyme system. P fertilization had positive effects on well‐watered seedlings due to improved growth and photosynthesis, which indicated the high P requirements during the initial E. grandis growth stage. In drought‐stressed seedlings, P application had no effects on the morphological traits, but it significantly improved the LRWC, Pn, quantum efficiency of photosystem II (Fv/Fm), chlorophyll pigments, nitrogenous compounds and reduced lipid peroxidation. P fertilization improved E. grandis seedling growth under well‐watered conditions but also ameliorated some leaf physiological traits under drought conditions. The effects of P fertilization are mainly due to the enhancement of plant N nutrition. Therefore, P can be used as a fertilizer to improve growth and production in the face of future climate change.

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Section: Discussionsupporting

confidence: 94%

Section: Discussionsupporting

confidence: 94%

Section: Discussionsupporting

confidence: 79%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Impact of phosphorus application on drought resistant responses of Eucalyptus grandis seedlings

Tariq

Pan

Olatunji

et al. 2019

Physiologia Plantarum

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“…Drought has been shown to unfavorably affect growth, CO 2 fixation, and nitrogen metabolism of F . rufa (Liu et al, 2015a,b), but it is seldom known how the above photoprotective pathways in bamboo plants respond to drought and subsequent rewatering.…”

Section: Introductionmentioning

confidence: 99%

The Synergistic Responses of Different Photoprotective Pathways in Dwarf Bamboo (Fargesia rufa) to Drought and Subsequent Rewatering

et al. 2017

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Dwarf bamboo-dominated forests are often subjected to temporary periods of drought due to rising air temperature and decreasing rainfall. Nevertheless, the relationship among CO2 assimilation, photoprotective pathways and metabolism of reactive oxygen species (ROS) remains unexplored in bamboo species. Changes in leaf gas exchange, chlorophyll fluorescence, energy partitioning, antioxidative system and compounds related to ROS metabolism in Fargesia rufa plants subjected to drought and subsequent rewatering were analyzed. Drought resulted in a reversible inhibition of photochemistry, particularly net CO2 assimilation, and lipid peroxidation due to ROS accumulation. Meanwhile, photoprotective pathways, including the water–water cycle (especially for moderate drought), and adjustment in antenna pigments, thermal dissipation and antioxidative defense capacity at organelle levels (especially for severe drought), were up-regulated at the stress phase. Conversely, photorespiration was down-regulated after drought stress. As a result, rewatering restored most of the photochemical activity under drought, especially moderate drought. Moreover, thermal dissipation under severe drought was still operated for avoiding high ROS levels after rewatering. Therefore, the synergistic function of these photoprotective pathways except photorespiration can protect the photosynthetic apparatus from oxidative damage in response to varying intensities of drought stress when CO2 assimilation is restricted. This is helpful for the gradual recovery of photosynthetic capacity after rewatering. Thus, F. rufa plants can withstand drought and is capable of survival in such environment.Highlights: The effects of drought and subsequent rewatering on Fargesia rufa were studied. Drought resulted in a reversible inhibition of photochemistry. Photoprotective pathways except photorespiration were up-regulated at the drought phase. Rewatering rapidly restored photochemical activity, especially under moderate drought. Fargesia rufa plant is capable of resisting and surviving drought environment.

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Role of nitrogen supplementation in alleviating drought‐associated growth and metabolic impairments in Phoebe zhennan seedlings

Tariq

Pan

Olatunji

et al. 2019

J. Plant Nutr. Soil Sci.

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Drought is one of the major environmental stresses altering forest productivity. However, nutrient availability can modulate drought resistance. Phoebe zhennan (gold Phoebe) is a high‐quality timber‐producing but threatened tree species in China, facing serious anthropogenic disturbances and abiotic constraints that restrict its growth and development. However, little attention has been given to designing adaptive strategies for its management by evaluating the possible role of major nutrients, particularly nitrogen (N), on its morphological and physio‐biochemical responses under water stress. To evaluate these responses, a complete randomized design was followed to investigate the effects of two irrigation levels (well‐watered and drought‐stressed conditions) and N fertilization treatments (with and without N). Drought stress significantly affected the growth of seedlings, as indicated by impaired photosynthesis, pigment degradation, disrupted N metabolism, over‐production of reactive oxygen species and enhanced lipid peroxidation. Nitrogen supplementation under drought stress had remarkable positive effects on the growth through physio‐biochemical adjustments as shown by higher level of nitrogenous compounds and up‐regulation of N‐associated metabolic enzymes activities which might be due to N‐mediated improved leaf relative water contents and photosynthetic efficiency. In addition, N application reduced oxidative stress and membrane damage, and maintained a high accumulation of osmolytes. However, in well‐watered seedlings N fertilization significantly improved root biomass and net CO2 assimilation rate suggesting high N‐use efficiency of the seedlings. These findings reveal that drought significantly affects the growth of P. zhennan, while N fertilization plays a crucial role in alleviating water stress damage by improving its drought tolerance potential at low metabolic costs. Therefore, N fertilization could be considered as an effective strategy for the conservation and management of P. zhennan in the face of future climate change.

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Effects of phosphorus application on photosynthetic carbon and nitrogen metabolism, water use efficiency and growth of dwarf bamboo ( Fargesia rufa ) subjected to water deficit

Cited by 60 publications

References 36 publications

Impact of phosphorus application on drought resistant responses of Eucalyptus grandis seedlings

Impact of phosphorus application on drought resistant responses of Eucalyptus grandis seedlings

The Synergistic Responses of Different Photoprotective Pathways in Dwarf Bamboo (Fargesia rufa) to Drought and Subsequent Rewatering

Role of nitrogen supplementation in alleviating drought‐associated growth and metabolic impairments in Phoebe zhennan seedlings

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