Physiological and microstructural responses of two Rhododendron cultivars to high temperature and low light

Li, Yuan; Liang, Wenjing; Zhao, Bing

doi:10.1007/s13580-020-00234-w

Cited by 15 publications

(4 citation statements)

References 40 publications

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“…The WT represents extreme high temperatures in the plant's growth environment. In general, the longer the duration of the highest temperature, the stronger the inhibitory effect on the plant anatomical structure, leading to changes in a series of metabolic processes that affect the photosynthetic rate of plants and the accumulation and distribution of products (Hendrickson et al, 2008;Djanaguiraman et al, 2011;Li et al, 2020;Zhen et al, 2020). These two temperature factors showed significant negative correlations with the photosynthetic parameters, the various biomass components, the aboveground nitrogen and phosphorus contents, the belowground bud nitrogen content, and the stem and leaf vascular bundle density.…”

Section: Discussionmentioning

confidence: 99%

Response of the functional traits of Schoenoplectus tabernaemontani to simulated warming in the Napahai wetland of northwestern Yunnan, China

Liu,

Zhao,

et al. 2024

Front. Ecol. Evol.

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The impact of climate warming on wetland ecosystems is a current focal point in ecological research. In this study, the Napahai wetland, a typical plateau wetland in northwest Yunnan Province, was selected as the study site to understand the growth and survival strategies of emergent plants in a plateau wetland under climate warming conditions. Open-top chambers (OTCs) were used to simulate warming in three treatments (i.e., control group, 2.0 ± 0.5°C, and 4.0 ± 0.5°C) in order to study the responses of the functional traits of the dominant emergent plant Schoenoplectus tabernaemontani to simulated warming. The results showed that simulated warming significantly reduced the photosynthetic carbon assimilation capacity and biomass accumulation of S. tabernaemontani, as well as its nitrogen content and vascular bundle density, while it significantly increased the vascular bundle size. The growing season accumulated temperature (AT) and the mean temperature of the hottest month (WT) were the main temperature factors influencing the functional traits of S. tabernaemontani. In summary, simulated warming significantly affected the functional traits of S. tabernaemontani, which demonstrated effective adaptation to warming conditions. As the temperature rises and the light and productivity decrease, S. tabernaemontani prioritizes the supply of limited resources to the underground part to ensure the biomass supply of the reproductive structure. This study provides a case for revealing the response patterns and ecological adaptation strategies of plateau wetland plants to climate warming.

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Section: Discussionmentioning

confidence: 99%

Response of the functional traits of Schoenoplectus tabernaemontani to simulated warming in the Napahai wetland of northwestern Yunnan, China

Liu,

Zhao,

et al. 2024

Front. Ecol. Evol.

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“…Other studies have found that high-temperature stress can lead to the degradation and damage of soluble proteins in woody plants and reduce the content of soluble proteins [54]. Some people think that different species have different substances that mainly rely on regulating cell osmotic potential, and different varieties and stress treatments have an impact on the changes in the osmotic adjustment factors of woody plants [63]. Under high-temperature stress, woody plants induce the accumulation of osmotic regulatory substances such as soluble sugar, Pro, and soluble protein in the body, thereby regulating the osmotic pressure of the internal environment.…”

Section: Influence On Osmotic Adjustment Substancesmentioning

confidence: 99%

Response Mechanisms of Woody Plants to High-Temperature Stress

Zhou,

Wu,

et al. 2023

Plants

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High-temperature stress is the main environmental stress that restricts the growth and development of woody plants, and the growth and development of woody plants are affected by high-temperature stress. The influence of high temperature on woody plants varies with the degree and duration of the high temperature and the species of woody plants. Woody plants have the mechanism of adapting to high temperature, and the mechanism for activating tolerance in woody plants mainly counteracts the biochemical and physiological changes induced by stress by regulating osmotic adjustment substances, antioxidant enzyme activities and transcription control factors. Under high-temperature stress, woody plants ability to perceive high-temperature stimuli and initiate the appropriate physiological, biochemical and genomic changes is the key to determining the survival of woody plants. The gene expression induced by high-temperature stress also greatly improves tolerance. Changes in the morphological structure, physiology, biochemistry and genomics of woody plants are usually used as indicators of high-temperature tolerance. In this paper, the effects of high-temperature stress on seed germination, plant morphology and anatomical structure characteristics, physiological and biochemical indicators, genomics and other aspects of woody plants are reviewed, which provides a reference for the study of the heat-tolerance mechanism of woody plants.

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“…The genus Rhododendron is mainly distributed in highaltitude areas in the southwest China and grow in a cold environment with poor heat resistance (Shrestha et al, 2018). The development of the Rhododendron industry in China is slow, which is primarily caused by insufficient heat resistance of Rhododendron (Li et al, 2020). Therefore, it is of great significance to study the response mechanism of Rhododendron to heat stress.…”

Section: Introductionmentioning

confidence: 99%

Changes and Correlation Between Physiological Characteristics of Rhododendron simsii and Soil Microbial Communities Under Heat Stress

et al. 2022

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The relationship between Rhododendron simsii and its soil microbial community under heat stress was not clear. In this study, the effects of heat stress on the physiological characteristics, soil physicochemical properties and soil microbial community structure of R. simsii were investigated. The experimental control (CK) was set as day/night (14/10 h) 25/20°C and experimental treatments were set as light heat stress (LHS) 35/30°C and high heat stress (HHS) 40/35°C. Our results showed that, compared with CK, LHS treatment significantly increased malondialdehyde, hydrogen peroxide, proline and soluble sugar contents, as well as catalase and peroxidase activities, while HHS treatment significantly increased ascorbate peroxidase activity and decreased chlorophyll content. Compared with CK, LHS treatment significantly reduced soil ammonium-nitrogen and nitrate-nitrogen content, while HHS significantly increased soil ammonium-nitrogen content. Compared with CK, both treatments changed the soil microbial community structure. For bacterial community, LHS and HHS treatment resulting in the significant enrichment of Burkholderia-Caballeronia-Paraburkholderia and Occallatibacte, respectively. For fungal community, LHS treatment resulting in the significant enrichment of Candida, Mortierella and Boothiomyces. The redundancy analysis showed that plant physiological characteristics, soil ammonium-nitrogen content were significantly correlated with the soil microbial community. Therefore, heat stress altered the soil microbial community structure, and affected the availability of soil available nitrogen, which in turn affected the physiological characteristics of R. simsii. We suggest that soil microbial community may play an important role in plant resistance to heat stress, and its mechanism deserves further study.

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Physiological and microstructural responses of two Rhododendron cultivars to high temperature and low light

Cited by 15 publications

References 40 publications

Response of the functional traits of Schoenoplectus tabernaemontani to simulated warming in the Napahai wetland of northwestern Yunnan, China

Response of the functional traits of Schoenoplectus tabernaemontani to simulated warming in the Napahai wetland of northwestern Yunnan, China

Response Mechanisms of Woody Plants to High-Temperature Stress

Changes and Correlation Between Physiological Characteristics of Rhododendron simsii and Soil Microbial Communities Under Heat Stress

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