Structure and function of rhizosphere and non-rhizosphere soil microbial community respond differently to elevated ozone in field-planted wheat

Chen, Zhan; Wang, Xiaoke; He, Shiying

doi:10.1016/j.jes.2014.12.018

Cited by 21 publications

(4 citation statements)

References 47 publications

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“…Under O 3 stress, copper (Cu) concentration was significantly reduced in the leaves, shoots, and roots, although the reduction was higher in the shoots than in the roots. Ozone-induced reduction in leaf N has also been observed in previous studies ( Chen et al., 2015 ; Pandey et al., 2018 ).…”

Section: Plant Responses To Osupporting

confidence: 84%

Elevated tropospheric ozone and crop production: potential negative effects and plant defense mechanisms

Nowroz,

Hasanuzzaman,

Siddika

et al. 2024

Front. Plant Sci.

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Ozone (O3) levels on Earth are increasing because of anthropogenic activities and natural processes. Ozone enters plants through the leaves, leading to the overgeneration of reactive oxygen species (ROS) in the mesophyll and guard cell walls. ROS can damage chloroplast ultrastructure and block photosynthetic electron transport. Ozone can lead to stomatal closure and alter stomatal conductance, thereby hindering carbon dioxide (CO2) fixation. Ozone-induced leaf chlorosis is common. All of these factors lead to a reduction in photosynthesis under O3 stress. Long-term exposure to high concentrations of O3 disrupts plant physiological processes, including water and nutrient uptake, respiration, and translocation of assimilates and metabolites. As a result, plant growth and reproductive performance are negatively affected. Thus, reduction in crop yield and deterioration of crop quality are the greatest effects of O3 stress on plants. Increased rates of hydrogen peroxide accumulation, lipid peroxidation, and ion leakage are the common indicators of oxidative damage in plants exposed to O3 stress. Ozone disrupts the antioxidant defense system of plants by disturbing enzymatic activity and non-enzymatic antioxidant content. Improving photosynthetic pathways, various physiological processes, antioxidant defense, and phytohormone regulation, which can be achieved through various approaches, have been reported as vital strategies for improving O3 stress tolerance in plants. In plants, O3 stress can be mitigated in several ways. However, improvements in crop management practices, CO2 fertilization, using chemical elicitors, nutrient management, and the selection of tolerant crop varieties have been documented to mitigate O3 stress in different plant species. In this review, the responses of O3-exposed plants are summarized, and different mitigation strategies to decrease O3 stress-induced damage and crop losses are discussed. Further research should be conducted to determine methods to mitigate crop loss, enhance plant antioxidant defenses, modify physiological characteristics, and apply protectants.

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Section: Plant Responses To Osupporting

confidence: 84%

Elevated tropospheric ozone and crop production: potential negative effects and plant defense mechanisms

Nowroz,

Hasanuzzaman,

Siddika

et al. 2024

Front. Plant Sci.

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“…For example, the most efficient P solubilizer, Natrinema sp. strain IARI-WRAB 2 was isolated from non rhizospheric soil of Region 4 (Yadav et al 2015d) There are no earlier reports available with regard to distribution of PGP archaea specifically in the rhizosphere or non rhizosphere, However parallel reports are available for bacteria (Chen et al 2015;Qi al. 2012).…”

Section: Discussionmentioning

confidence: 99%

Seasonal variations in culturable archaea and their plant growth promoting attributes to predict their role in establishment of vegetation in Rann of Kutch

et al. 2019

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Archaea are unique microorganisms that are present in ecological niches of high temperature, pH and high salinity. Archaea may be present freely or associated with plant rhizosphere. The plant-microbe interactions may be implicit to plants adaptation to abiotic stress of hypersalinity. With an aim to look for population dynamics of archaea at different seasons of the year in hypersaline environments of Rann of Kutch, the rhizospheric, non-rhizospheric, water and sediment samples were collected during autumn, winter and summer. Sampling sites were selected on the basis of topography and vegetation which included barren land, salt pan and rhizosphere of monocot and dicot plants. Soil pH and salinity (mS cm −1 ) varied from 7.4-10.15 and 1.19-106.7 respectively. A total of 157 halophilic archaea were isolated using seven different selective media. The isolated archaeal were screened for abiotic stress and it has been found they show the wide range of in the tolerance to temperatures (25-65 °C), NaCl concentrations (0.86-5.48 M), water stresses (upto −0.75Mpa) and pH (4-10). The profiling of archaeal community using 16S rRNA gene sequencing and phylogenetic analysis revealed that all archaeal isolates belonged to a family halobacteriaceae of phylum euryarchaeota. Based on 16S rRNA gene sequencing the cultures were identified and belonged to twenty eight distinct species of 16 genera namely Haladaptatus,

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“…From June to August 2016, ozone replaced PM 10 and PM 2.5 as the primary pollutant in the three urban agglomerations of Beijing-Tianjin-Hebei, Yangtze River Delta, and Pearl River Delta in China [3]. Many studies have found that near-surface O 3 could destroy photosynthetic pigments and damage chloroplasts in plants [4,5], change carbon metabolism [6,7], affect enzyme activities [8,9] and microbial communities [10,11], which might reduce production of crops and trees, and even lead to the degradation of forest ecosystem [12].…”

Section: Introductionmentioning

confidence: 99%

Effects of Ozone Stress on Rhizosphere Soil of Poplar Seedlings

Wang,

Yang,

Zhang

et al. 2024

Forests

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Near-surface O3 has negative effects on plant productivity; however there were few studies on the effects of O3 pollution on the belowground part of the ecosystem. The effect of O3 stress on the belowground parts of poplar is unclear. We investigated the effects of O3 pollution on poplar rhizosphere soil in open-top chambers (OTC). Two kinds of plants with different O3 sensitivity were selected, i.e., high-sensitive poplar clone 546 and low-sensitive poplar clone 107. The control group and high-concentration O3 group were set up: charcoal-filtered air, CF; unfiltered air + 60 ppb O3, NF. Poplar rhizosphere soil was taken after 96 days (15 June to 17 September 2020) of cultivation in OTCs. O3 stress decreased the amplicon sequence variations (ASVs) of microorganisms in poplar 107 and poplar 546 rhizosphere soil, with no significant interspecific difference. The effect of O3 fumigation on the fungal community was greater than that on the bacterial community. The correlation between the bacterial community and rhizosphere soil physicochemical indices was closer than that of the fungal community. Some fungi, such as Clitopilus hobsonii, Mortierella sp., and Minimedusa, might help poplar resist the O3 stress. O3 stress had direct impacts on the pH, nutrients, and enzyme activities of rhizosphere soil, while it had indirect negative impacts on microbial community composition by nutrients. There was no difference in sensitivity between rhizosphere soil response to O3 stress of poplar clone 107 and clone 546, which might take a longer accumulation time to show the effect. This study provides a certain basis for accurately evaluating the ecological effects of O3 pollution.

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Structure and function of rhizosphere and non-rhizosphere soil microbial community respond differently to elevated ozone in field-planted wheat

Cited by 21 publications

References 47 publications

Elevated tropospheric ozone and crop production: potential negative effects and plant defense mechanisms

Elevated tropospheric ozone and crop production: potential negative effects and plant defense mechanisms

Seasonal variations in culturable archaea and their plant growth promoting attributes to predict their role in establishment of vegetation in Rann of Kutch

Effects of Ozone Stress on Rhizosphere Soil of Poplar Seedlings

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