Pb stress effects on leaf chlorophyll fluorescence, antioxidative enzyme activities, and organic acid contents of Pogonatherum crinitum seedlings

Hou, Xiaolong; Han, Hang; Cai, Liping; Liu, Aiqin; Ma, Xiao; Zhou, Chuifan; Guo, Weihua; Meng, Fan‐Rui

doi:10.1016/j.flora.2018.01.006

Cited by 44 publications

(16 citation statements)

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“…Organic acids have different abilities when it comes to releasing P bonds. Moreover, citric acid dissolved P more effectively than oxalic and malic acids, according to Hocking [ 49 ] and Hou et al [ 50 ], and organic acids that can form a more stable complex with metal cations will be more successful in releasing aluminum and iron from soil minerals, allowing for more phosphorus to be released. In our study, four genera were determined Pseudomonas , Serratia , Pantoea , and Enterobacter , PSBs are diversified in nature [ 51 ], according to Biswas et al [ 52 ], Sulbaran et al [ 53 ], Bendjelloul et al [ 54 ], and Liu et al [ 36 ]; bacteria belonging to the genera Pseudomonas , Enterobacter , Serratia , and Pantoea are potent PSMs.…”

Section: Discussionmentioning

confidence: 99%

Phosphate-Solubilizing Bacteria Isolated from Phosphate Solid Sludge and Their Ability to Solubilize Three Inorganic Phosphate Forms: Calcium, Iron, and Aluminum Phosphates

et al. 2022

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Biofertilizers are a key component of organic agriculture. Bacterial biofertilizers enhance plant growth through a variety of mechanisms, including soil compound mobilization and phosphate solubilizing bacteria (PSB), which convert insoluble phosphorus to plant-available forms. This specificity of PSB allows them to be used as biofertilizers in order to increase P availability, which is an immobile element in the soil. The objective of our study is to assess the capacity of PSB strains isolated from phosphate solid sludge to solubilize three forms of inorganic phosphates: tricalcium phosphate (Ca3(PO4)2), aluminum phosphate (AlPO4), and iron phosphate (FePO4), in order to select efficient solubilization strains and use them as biofertilizers in any type of soil, either acidic or calcareous soil. Nine strains were selected and they were evaluated for their ability to dissolve phosphate in the National Botanical Research Institute’s Phosphate (NBRIP) medium with each form of phosphate (Ca3(PO4)2, AlPO4, and FePO4) as the sole source of phosphorus. The phosphate solubilizing activity was assessed by the vanadate-molybdate method. All the strains tested showed significantly (p ≤ 0.05) the ability to solubilize the three different forms of phosphates, with a variation between strains, and all strains solubilized Ca3(PO4)2 more than FePO4 and AlPO4.

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Section: Discussionmentioning

confidence: 99%

Phosphate-Solubilizing Bacteria Isolated from Phosphate Solid Sludge and Their Ability to Solubilize Three Inorganic Phosphate Forms: Calcium, Iron, and Aluminum Phosphates

et al. 2022

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“…growth tolerance index in Dianthus carthusianorum L (Muszynska et al, 2018),. leaf malondialdehyde level in Pogonatherum crinitum seedlings(Hou et al, 2018), plant growth rates in Nerium oleander L (Trigueros, Mingorance, & Rossini Oliva, 2012),. organic acid in shoots of Echium vulgare L (Dresler et al, 2017),.…”

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confidence: 99%

Growth responses and physiological and biochemical changes in five ornamental plants grown in urban lead‐contaminated soils

Song¹,

Zhang

Chen³

et al. 2020

Plant Enviro Interactions

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An increasing concentration of lead (Pb) in urban contaminated soil due to anthropogenic activities has been a global issue threatening human health. The use of urban ornamental plants as phytoremediation of Pb‐contaminated soil is a new choice. In the present experiment, the physiological and biochemical response of five ornamental plants to increase in concentrations of C4H6O4Pb·H2O in the soil were measured to investigate these plans’ Pb tolerance strategies and abilities. Our results showed that Pb stress significantly inhibited the growth and the biomass of all the plants. The root activity (RA), net photosynthetic rate (Pn), and chlorophyll (Chl) content in Pb‐stressed leaves were significantly decreased, whereas the leaf proline (Pro), soluble sugar (SS), and membrane stability index (MSI) were remarkable increased compared with those in the control group. By application of all‐subsets regression and linear regression, the reduction in photosynthetic capacity in the five plants is mainly due to the decrease in the leaf Chl content caused by Pb stress. The bioconcentration factor (BCF) in Canna generalis was greater than 1, while in the other plants were lower than 1, suggesting that Canna generalis had the highest Pb accumulation ability. The translocation factor (TF) in all the plants were lower than 1, suggesting that Pb preferentially accumulated in the external part of roots. By calculating the comprehensive evaluation value (CEV), Iris germanica L. was found to be the most sensitive species, and Canna generalis was the most tolerant species, to Pb stress among the five ornamental plants.

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“…Under Pb 2+ stress, SOD and peroxidase (POD) enzyme activities in Pogonatherum crinitum leaves were increased, which could reduce the cell membrane damage [ 34 ]. SOD and CAT in Datura stramonium Linn under Cd stress showed an increasing trend at the beginning of the treatment and gradually decreased with time.…”

Section: Resultsmentioning

confidence: 99%

Differential Gene Expression and Metabolic Pathway Analysis of Cladophora rupestris under Pb Stress Conditions

Liu

Zhang²,

Liu³

et al. 2022

IJERPH

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This study aimed to analyze the transcriptome of C. rupestris under Pb2+ stress by using high-throughput sequencing technology, observe the changes of gene expression and metabolic pathway after three and five days under 1.0 and 5.0 mg/L of Pb2+ treatment, and analyze the differentially expressed genes (DEGs) and related functional genes after Pb2+ treatment. Metabolic pathways were revealed through Gene Ontology (GO) and the Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis. Results show that DEGs increased significantly with the increase of Pb2+ concentration and stress time. A total of 32 genes were closely related to Pb2+ stress response. GO analysis identified two major transporter proteins, namely, ATP-binding transport protein-related (ABC transporters) and zinc finger CCHC domain containing protein (Zfp) in C. rupestris. Pthr19248, pthr19211, Zfp pthr23002, Zfp p48znf pthr12681, Zfp 294 pthr12389, and Zfp pthr23067 played important roles against Pb2+ toxicity and its absorption in C. rupestris. KEGG pathway analysis suggested that ABCA1, ATM, and ABCD3 were closely related to Pb2+ absorption. Pb2+ stress was mainly involved in metallothionein (MT), plant hormone signal transduction, ABC transporters, and glutathione (GSH) metabolism.

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Pb stress effects on leaf chlorophyll fluorescence, antioxidative enzyme activities, and organic acid contents of Pogonatherum crinitum seedlings

Cited by 44 publications

References 42 publications

Phosphate-Solubilizing Bacteria Isolated from Phosphate Solid Sludge and Their Ability to Solubilize Three Inorganic Phosphate Forms: Calcium, Iron, and Aluminum Phosphates

Phosphate-Solubilizing Bacteria Isolated from Phosphate Solid Sludge and Their Ability to Solubilize Three Inorganic Phosphate Forms: Calcium, Iron, and Aluminum Phosphates

Growth responses and physiological and biochemical changes in five ornamental plants grown in urban lead‐contaminated soils

Differential Gene Expression and Metabolic Pathway Analysis of Cladophora rupestris under Pb Stress Conditions

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