Effects of elevated <scp>CO<sub>2</sub></scp> and temperature on photosynthesis and leaf traits of an understory dwarf bamboo in subalpine forest zone, China

Li, Yongping; Zhang, Yuanbin; Zhang, Xiaolu; Korpelainen, Helena; Berninger, Frank; Li, Chunyang

doi:10.1111/j.1399-3054.2012.01705.x

Cited by 35 publications

(22 citation statements)

References 49 publications

(109 reference statements)

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“…Dwarf bamboo-dominated forests are often subject to extreme temperature and rainfall patterns as a result of climate change, which exposes them to temporary periods of drought during their life cycle and then adversely affects their growth (Wang and Ma, 1993). Fargesia rufa Yi, one of the most important dwarf bamboos, is distributed abundantly in floors of subalpine forests of China (Li et al, 2013). More importantly, it is the staple food for the endangered giant pandas.…”

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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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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“…was assayed by homogenization of 0.2 g frozen leaves in 2 mL 10 % HCl and determined by colorimetric method (Tang 1999). Reduced N was determined by microKjeldahl method after digestion in H 2 SO 4 -H 2 O 2 (Li 2000). Total N was defined here as the sum of NO 3 -and reduced N (Sánchez-Rodríguez et al 2011).…”

Section: Biochemical Analysismentioning

confidence: 99%

“…NO 3 -was analyzed from an aqueous extraction of 0.2 g frozen leaves in 5 mL of deionized water for 10 min in a boiling water bath and measured at 410 nm (Li 2000). NH 4…”

Section: Biochemical Analysismentioning

confidence: 99%

“…However, very little research is done in physiological and biochemical recovery of semi-woody plants after drought. Dwarf bamboo (Fargesia rufa Yi), a kind of rhizomatous, semi-woody and perennial evergreen plant, is one of the staple food for the endangered giant panda and is an abundant understory species growing in evergreen-deciduous broadleaf forest and coniferousbroadleaf mixed forest in subalpine zone, China (Li et al 2013). Maintaining a high productivity of dwarf bamboo plays an essential role in giant panda's survival and conservation.…”

Section: Introductionmentioning

confidence: 99%

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Photosynthetic carbon and nitrogen metabolism and the relationship between their metabolites and lipid peroxidation in dwarf bamboo (Fargesia rufa Yi) during drought and subsequent recovery

Liu

Wang

Pan

et al. 2015

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Key message Differential regulations of C and N metabolism in dwarf bamboo improve the capacity of osmotic adjustment, and also their metabolites may play an important role for protection against membrane lipid peroxidation under drought, thus accelerating recovery after rewatering. Abstract Dwarf bamboo (Fargesia rufa Yi), is a staple food for the endangered giant panda, but little is known about the impact of drought on bamboo species and its recovery mechanism. This study investigated the response of carbon (C) and nitrogen (N) metabolism to drought and subsequent recovery, and the relationship of their metabolites with lipid peroxidation. Photochemistry was reversibly down-regulated after drought, but a longer recovery time is needed. The accelerated degradation of starch due to a rapid increase in amylase activity resulted in higher soluble sugar only in severe drought-stressed plants after 30 days of drought. Sucrose content was not affected by drought because of the relative increases in activities of invertase, sucrose synthase, and sucrose phosphate synthase. As nitrate concentration increased in parallel with nitrate reductase activity, ammonium (NH 4 ? ) production was enhanced by drought. Also, activated glutamine synthetase/glutamate synthase cycle stimulated NH 4? assimilation, while hydrolysis of soluble proteins was accelerated, resulting in accumulation of amino acids. After rewatering, re-balancing of C metabolism has gradually begun, but a stronger N metabolism was still observed. The notable positive correlations between MDA and the contents of starch and proline after 15 days of drought as well as between MDA and the contents of soluble sugar, NSC and proline after 30 days of drought were displayed. We conclude that dwarf bamboo may not only differently regulate its C and N metabolism to improve the capacity of osmotic adjustment but also employ its different metabolites protect against membrane Communicated by M. Adams.

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“…Chlorophyll content decreased with the accumulation of non-structural carbohydrate under elevated CO 2 concentration and temperature. Li et al (2013) found that starch particles accumulate in the chloroplasts of the dwarf bamboo growth under elevated CO 2 concentration. Non-structural carbohydrate accumulation is generally thought to physically distort the chloroplast (DeLucia et al 1985) and possibly hinder CO 2 diffusion within the chloroplast (Makino 1994).…”

Section: Leaf Chlorophyll Contentmentioning

confidence: 99%

Effects of elevated CO2 concentration and increased temperature on leaf quality responses of rare and endangered plants

et al. 2018

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Background: In the study, the effects of elevated CO 2 and temperature on the nitrogen content, carbon content, and C:N ratio of seven rare and endangered species (Quercus gilva, Hibiscus hambo, Paliurus ramosissimus, Cicuta virosa, Bupleurum latissimum, Viola raddeana, and Iris dichotoma) were examined under control (ambient CO 2 + ambient temperature) and treatment (elevated CO 2 + elevated temperature) for 3 years (May 2008 and June 2011). Results: Elevated CO 2 concentration and temperature result in a decline in leaf nitrogen content for three woody species in May 2009 and June 2011, while four herb species showed different responses to each other. The nitrogen content of B. latissimum and I. dichotoma decreased under treatment in either 2009 and 2011. The leaf nitrogen content of C. virosa and V. raddeana was not significantly affected by elevated CO 2 and temperature in 2009, but that of C. virosa increased and that V. raddeana decreased under the treatment in 2011. In 2009, it was found that there was no difference in carbon content in the leaves of the six species except for that of P. ramosissimus. On the other hand, while there was no difference in carbon content in the leaves of Q. gilva in the control and treatment in 2011, carbon content in the leaves of the remaining six species increased due to the rise of CO 2 concentration and temperature. The C:N ratio in the leaf of C. virosa grown in the treatment was lower in both 2009 and 2011 than that in the control. The C:N ratio in the leaf of V. raddeana decreased by 16.4% from the previous year, but increased by 28.9% in 2011. For the other five species, C:N ratios increased both in and 2011and 2011 contents in the leaves of Q. gilva and H. hamabo were higher in the treatment than those in the control. In the case of P. ramosissimus, the ratio was higher in the treatment than that in the control in 2009, but in 2011, the result was the opposite. Among four herb species, the chlorophyll contents in the leaves of C. virosa, V. raddeana, and I. dichotoma did not show any difference between gradients in 2009, but decreased due to the rise of CO 2 concentration and temperature in 2011. Leaf nitrogen and carbon contents, C:N ratio, and chlorophyll contents in the leaves of seven rare and endangered species of plant were found to be influenced by the rise and duration of CO 2 concentration and temperature, species, and interaction among those factors. Conclusions: The findings above seem to show that long-term rise of CO 2 concentration, and temperature causes changes in physiological responses of rare and endangered species of plant and the responses may be species-specific. In particular, woody species seem to be more sensitive to the rise of CO 2 concentration and temperature than herb species.

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Effects of elevated CO₂ and temperature on photosynthesis and leaf traits of an understory dwarf bamboo in subalpine forest zone, China

Cited by 35 publications

References 49 publications

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

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

Photosynthetic carbon and nitrogen metabolism and the relationship between their metabolites and lipid peroxidation in dwarf bamboo (Fargesia rufa Yi) during drought and subsequent recovery

Effects of elevated CO2 concentration and increased temperature on leaf quality responses of rare and endangered plants

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Effects of elevated CO2 and temperature on photosynthesis and leaf traits of an understory dwarf bamboo in subalpine forest zone, China

Cited by 35 publications

References 49 publications

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

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

Photosynthetic carbon and nitrogen metabolism and the relationship between their metabolites and lipid peroxidation in dwarf bamboo (Fargesia rufa Yi) during drought and subsequent recovery

Effects of elevated CO2 concentration and increased temperature on leaf quality responses of rare and endangered plants

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Effects of elevated CO₂ and temperature on photosynthesis and leaf traits of an understory dwarf bamboo in subalpine forest zone, China