Sex‐specific responses of <i>Populus cathayana</i> to drought and elevated temperatures

Xu, Xiao; Yang, Fan; Xiao, Xiudi; Sheng, Zhang; Korpelainen, Helena; Li, Chunyang

doi:10.1111/j.1365-3040.2008.01799.x

Cited by 186 publications

(149 citation statements)

References 61 publications

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“…Females are generally more prone to sexual spatial segregation and more abundant in moist and resource-rich environments (Freeman et al 1976;Rowland and Johnson 2001;Hultine et al 2007). Sex niche partitioning results from the different tolerance levels to harsh stress (Xu et al 2008;Zhang et al 2010;Montesinos et al 2012) and different resource demands, such as water, light, and temperature (Dawson et al 2004;Li et al 2007;Xu et al 2008;Zhao et al 2009;Zhang et al 2010). The preference for different N forms may have a function in special segregation of the sexes.…”

Section: Introductionmentioning

confidence: 99%

Populus deltoides females are more selective in nitrogen assimilation than males under different nitrogen forms supply

Dong

Guo

et al. 2014

Trees

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Key Message Female cuttings of Populus deltoides were sensitive to inorganic nitrogen forms and biased for NO 3 2 -N, whereas males exhibited no obvious preference for nitrogen form in nitrogen fertilizations. Abstract We investigated the effects of different inorganic nitrogen forms (NO 3 --N and NH 4 ? -N) on the morphology, physiology, and carbohydrate accumulation of male and female Populus deltoides. Results showed that both NO 3 --N and NH 4 ? -N supply forms significantly increased plant growth, C and N contents of all plant organs, chlorophyll pigment contents, net photosynthesis rates (P n ), and instantaneous photosynthetic N-use efficiencies (PNUE) in the leaves of both male and female P. deltoides. Females exhibited high total plant dry mass accumulation, P n , PNUE, and N contents in leaves but lower non-structure carbohydrate accumulation than males under nitrate treatment. However, males showed significantly higher P n , PNUE, and 15 NH 4 ? in the leaves, free amino acid content, and nitrate reductase (NR) activities than females under each nitrogen form supply treatment.These results suggested that male and female P. deltoides used different adaptive strategies in dry mass accumulation, allocation, and exhibited different interactions between nitrogen and carbon metabolism. Males exhibited higher nitrogen assimilation ability and N-use efficiency than females under nitrogen fertilizations, whereas females showed more sensitivity to inorganic nitrogen forms of treatments and distinct preference for NO 3 --N. Male P. deltoides showed no obvious bias to the two different N forms. Therefore, the different preferences of male and female P. deltoides of N supplied forms can serve as an important strategy for minimizing intraspecific competition between the two genders.

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Section: Introductionmentioning

confidence: 99%

Populus deltoides females are more selective in nitrogen assimilation than males under different nitrogen forms supply

Dong

Guo

et al. 2014

Trees

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“…On the other hand, elevated temperature is an essential mediator in plant photosynthesis and chlorophyll contents. A previous study has showed that elevated temperature stimulates the photosynthesis rate, light saturated rate of CO 2 uptake (A sat ) and U in Populus cathayana (Xu et al 2008). It has been thought that an increase in the photosynthesis rate of three Mediterranean pine species caused by elevated temperature results from a significant increase in chlorophyll contents and U (Awada et al 2003).…”

Section: Discussionmentioning

confidence: 99%

“…The computer-controlled heating and cooling system (LT/ WSK-PLC, BQHGCT Co. Led., Beijing, China), together with a set of magnetoelectric valves to control the pure CO 2 supply (pure CO 2 was produced by separating air), enabled the temperature and CO 2 concentration to be adjusted automatically inside the chambers according to the ambient conditions (Xu et al 2008).…”

Section: Plant Materials and Experimental Designmentioning

confidence: 99%

“…As one of the most important aspects of global change, elevated atmospheric temperature may directly or indirectly affect the establishment, survival and reproduction of terrestrial plants, resulting in dramatic effects on ecosystems (Loik et al 2004). There is a vast amount of literature of the direct effects of elevated temperature on plants and ecosystems, and it is clear that elevated temperature may contribute to increased plant productivity (Aranjuelo et al 2006;Xu et al 2008). On the other hand, increased temperature also has a great influence on the regulation of biochemical reaction rates and physiological processes (Cernusak et al 2006;Lambrecht et al 2007).…”

Section: Introductionmentioning

confidence: 99%

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Adaptability to elevated temperature and nitrogen addition is greater in a high-elevation population than in a low-elevation population of Hippophae rhamnoides

Zhao

Duan

et al. 2011

Trees

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Hippophae rhamnoides L. is a broadleaf deciduous woody shrub occurring in southwest China, where it has been widely used in ecological restoration. In this study we investigated growth and physiological responses of 2-year-old healthy seedlings to elevated temperature, nitrogen (N) addition and their combination in two contrasting populations from high and low elevations. In closed-top chamber experiments, two populations were subjected to two temperature conditions (ambient temperature and temperature elevated by 2.2 ± 0.2°C) and two N levels (0 and 25 g N m -2 a -1 ). Compared with the control, increases in total leaf area (TLA), total chlorophyll content (TC), light-saturated photosynthetic rate (P max ), guaiacol peroxidase activity (POD), catalase activity (CAT) and carbon isotope composition (d 13 C) were greater in the high-elevation population than in the low-elevation population under elevated temperature. On the other hand, decreases in root and shoot biomass ratio (RS), TC, P max , light saturation point (L SP ), light compensation point (L CP ), superoxide dismutase (SOD), POD, CAT and d 13 C were lower in the high-elevation population than in the lowelevation population under N addition. Moreover, the combination of elevated temperature and N addition decreased RS, P max , apparent quantum efficiency (U), SOD, POD and d 13 C significantly more in the lowelevation population than in the high-elevation population. These results demonstrated that there are different adaptive strategies among H. rhamnoides populations, the highelevation population exhibiting higher adaptability to elevated temperature and N addition than the low-elevation population.

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“…Stomata closure and photoinhibitory damage are considered as the major factors responsible for the depression of assimilation rate (Muraoka et al 2000). Xu et al (2008) demonstrated that drought treatment of Populus cathayana Rehd. juveniles (cuttings) had significant negative effect on their growth and net photosynthesis rate, and increased WUEi and malondialdehyde (MDA) content.…”

Section: Discussionmentioning

confidence: 99%

Response of juvenile progeny of seven forest tree species and their populations to simulated climate change-related stressors, heat, elevated humidity and drought

Pliūra¹,

Jankauskienė²,

Lygis³

et al. 2018

iForest

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Response of juvenile progeny of seven forest tree species and their populations to simulated climate change-related stressors, heat, elevated humidity and drought Alfas Pliūra The study aimed to evaluate response and phenotypic plasticity of juvenile progeny of seven forest tree species Pinus sylvestris, Picea abies, Quercus robur, Fraxinus excelsior, Alnus glutinosa, Betula pendula and Populus tremula and their populations to climate change-related stressors, simulated in a phytotron -heat and elevated humidity and heat and drought -in comparison to performance in ambient (control) conditions. Treatment effect on sapling morphometric, physiological and biochemical traits was significant except for health condition, transpiration and photosynthetic rates and water use efficiency (WUE). Species effect and species-by-treatment interaction were strongly significant in most traits studied, indicating a great inter-specific variability of responses to the applied treatments. Compared to control, stem diameter increment was lower for most species following both hot-wet and hotdry treatments, while treatment impact on height increment was less pronounced and sometimes even positive. Drought caused significant defoliation in P. tremula, A. glutinosa and B. pendula, while under hot-wet treatment the defoliation in most species was lower than in control. Following hot dry treatment, WUE in P. abies, P. sylvestris and B. pendula was lower than following both hot-wet treatment and control, while in P. tremula, A. glutinosa and Q. robur WUE was higher. This suggests that the latter species are able to maintain a balance between photosynthesis and transpiration. Photosynthetic rate was highest in P. tremula, B. pendula and A. glutinosa, however it was much more negatively affected by water deficit in these three species than in other tested species. In most cases, drought had a negative effect on production of pigments in deciduous tree species, which, together with increased amounts of malondialdehyde and hydrogen peroxide, indicated a presence of an oxidative stress. Significant population effect and population-by-treatment interactions found for most traits showed different plasticity and response of tree populations to the treatments. Although, only 19% of the populations showed significant ecovalencies. Some of the observed reactions may not be considered as adaptive acclimation as decreasing growth of some species and populations indicates deteriorating performance which may lead to changes in their competitiveness, thus compromising regeneration, persistence of natural successions and sustainability of forest ecosystems. Keywords: Climate Change, Stress, Growth, Physiology, Transpiration, Photosynthesis, Water Use Efficiency, Biochemical Parameters, Phenotypic Plasticity IntroductionOver the few last millennia forest tree species were subjected to conspicuous climatic and environmental changes and were forced to react to these changes by migration and genetic adaptation to new growing conditions (Huntley & Birks 1983)....

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Sex‐specific responses of Populus cathayana to drought and elevated temperatures

Cited by 186 publications

References 61 publications

Populus deltoides females are more selective in nitrogen assimilation than males under different nitrogen forms supply

Populus deltoides females are more selective in nitrogen assimilation than males under different nitrogen forms supply

Adaptability to elevated temperature and nitrogen addition is greater in a high-elevation population than in a low-elevation population of Hippophae rhamnoides

Response of juvenile progeny of seven forest tree species and their populations to simulated climate change-related stressors, heat, elevated humidity and drought

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