Dynamic nutrient removal potential of a novel submerged macrophyte Rotala rotundifolia, and its growth and physiological response to reduced light available

Chu, Shuyi; Zhang, Xia-Ying; Xiao, Jibo; Chen, Ruihuan

doi:10.1016/j.jenvman.2021.112965

Cited by 11 publications

(3 citation statements)

References 51 publications

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“…After the samples were weighed and ground to a powder in liquid nitrogen, a 0.5 g sample of frozen leaves was used to determine the activity of antioxidant enzymes. Moreover, 10 mL of 50 mmol•L −1 sodium phosphate buffer (pH 7.8) was added, which contained 1% of polyvinylpyrrolidone (PVP), 0.2 mmol•L −1 of EDTA, and 10 mmol•L −1 of magnesium chloride, and was then centrifuged at 10,000× g for 15 min at 4 • C as previously described, with modifications [33]. The activities of SOD (20220916), POD (20220929), CAT (20220902), and the content of MDA (20220915) were detected spectrophotometrically using Solarbio assay kits, following the manufacturer's instructions (Solarbio, Beijing, China).…”

Section: Measurement Of Malondialdehyde and Assays Of Antioxidant Enz...mentioning

confidence: 99%

Phosphorus Availability Affects the Photosynthesis and Antioxidant System of Contrasting Low-P-Tolerant Cotton Genotypes

et al. 2023

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Phosphorus (P) is an essential macronutrient, and an important component of plant metabolism. However, little is known about the effects of low P availability on P absorption, the photosynthetic electron transport chain, and the antioxidant system in cotton. This study used cotton genotypes (sensitive FJA and DLNTDH and tolerant BX014 and LuYuan343) with contrasting low-P tolerance in a hydroponic experiment under 15 µM, 50 µM, and 500 μM P concentrations. The results showed that low P availability reduced plant development and leaf area, shoot length, and dry weight in FJA and DLNADH, compared to BX014 and LuYuan343. The low P availability decreased the gas-exchange parameters such as the net photosynthetic rate, transpiration rate, and stomatal conductance, and increased the intercellular CO2 concentration. Chlorophyll a fluorescence demonstrated that the leaves’ absorption and trapped-energy flux were largely steady. In contrast, considerable gains in absorption and trapped-energy flux per reaction center resulted from decreases in the electron transport per reaction center under low-P conditions. In addition, low P availability reduced the activities of antioxidant enzymes and increased the content of malondialdehyde in the cotton genotypes, especially in FJA and DLNTDH. Moreover, low P availability reduced the activity of PEPC and generated a decline in the content of ATP and NADPH. Our research can provide a theoretical physiological basis for the growth and tolerance of cotton under low-P conditions.

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Section: Measurement Of Malondialdehyde and Assays Of Antioxidant Enz...mentioning

confidence: 99%

Phosphorus Availability Affects the Photosynthesis and Antioxidant System of Contrasting Low-P-Tolerant Cotton Genotypes

et al. 2023

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“…The chlorophyll concentration in the leaves of V. natans can directly affect photosyn thetic intensity. Light drives the photosynthesis, producing carbohydrates that allo plants to grow [31]. In this study, the total chlorophyll concentration in the leaves of V natans in dynamic groups increased significantly (p < 0.05), from the initial concentratio of 0.6 ± 0.04 mg•g −1 (FW) to 1.1 ± 0.1 mg•g −1 (FW) on the 60th day (Figure 4a and Table S3 Extensive research has been carried out on the natural water flow in lakes and other waterbodies, which enhances the growth of aquatic plants.…”

Section: Effects Of Water Flow On the Physiological And Antioxidant D...mentioning

confidence: 99%

The Growth of Vallisneria natans and Its Epiphytic Biofilm in Simulated Nutrient-Rich Flowing Water

Ren

Gao

et al. 2022

Water

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This paper investigates the effects of water flow on the growth and physiological indicators of the submerged macrophyte, Vallisneria natans, and the bacteria and algae community composition on its epiphytic biofilm-covered leaves. The authors set up a simulated flowing water laboratory experiment testing high nitrogen (N) and phosphorus (P) concentrations. Total chlorophyll and dissolved oxygen (DO) was significantly enhanced, and turbidity was reduced, thereby accelerating the growth of V. natans. These experiments were compared to another set of observations on a static group. The accumulation of malonaldehyde (MDA) in the dynamic groups was significantly higher than that in the static group. As an antioxidant stress response, the total superoxide dismutase (T-SOD) was also induced in plants exposed to nutrient-rich flowing water. The results of 16S rRNA high-throughput sequencing analyses showed that the water flow increased the bacteria community diversity of biofilm-producing bacteria with N and P removing bacteria, carbon cycle bacteria, and plant growth-promoting rhizobacteria on the epiphytic biofilm. This research determined that water flow alleviates the adverse effects of eutrophication when V. natans grows in water containing high N and P concentrations. Water flow also inhibits the growth of cyanobacteria (also referred to as blue-green algae) in epiphytic biofilm. The ecological factor of water flow, such as water disturbance and aeration measures, could alleviate the adverse effect of eutrophic water by providing a new way to restore submerged macrophytes, such as V. natans, in eutrophic water.

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“…However, in variable or harsh environments, researchers have found a few species using the varied-shaped leaves to adapt to the environment and improve their survival rates. For example, emergent plants (such as Batrachium bungei, Myriophyllum aquaticum, and Rotala rotundifolia ) living in the water-land transition zone, and Cudrania tricuspidata living on rocks of the coastal zone with soil drought and poor-soil nutrition, grow different shaped leaves on the same individual ( Wersal and Madsen, 2011 ; Butkuvienė et al., 2020 ; Chu et al., 2021 ). Heteromorphic leaves refer to the phenomenon that plant individual grows different shaped leaves (e.g., lanceolate, ovate, and broad-ovate) at the different locations of the body ( Iqbal et al., 2017 ; Zhai et al., 2020 ).…”

Section: Introductionmentioning

confidence: 99%

Drought stress-induced the formation of heteromorphic leaves of Populus euphratica Oliv: evidence from gene transcriptome

et al. 2023

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Populus euphratica Oliv., a dominant species of arid desert community, grows heteromorphic leaves at different crown positions. Whether heteromorphic leaves are a strategy of plant adaptation to drought stress is rarely reported. This study sequenced the transcriptome of three typical heteromorphic leaves (lanceolate, ovate and broad-ovate leaves) of P. euphratica, and measured their drought stress. We wanted to reveal the molecular mechanisms underlying the formation of heteromorphic leaves. Drought stress was increased significantly from lanceolate to ovate to broad-ovate leaves. Gene ontology (GO) and KEGG enrichment analysis showed that the MADs-box gene regulated the expression of peroxidase (POD) in the phenylpropane biosynthetic pathway. The up-regulated expression of the chalcone synthase (CHS) gene in broad-ovate leaves significantly activated the flavonoid biosynthetic pathway. In the process of leaf shape change, the different expressions of homeodomain leucine zipper (HD-ZIP) among the three heteromorphic leaves had potential interactions on the AUX and ABA pathways. The expression of Sucrose phosphate synthase (SPS) and sucrose synthase (SUS) increased from lanceolate to broad-ovate leaves, resulting in a consistent change in starch and sucrose content. We concluded that these resistance-related pathways are expressed in parallel with leaf formation genes, thereby inducing the formation of heteromorphic leaves. Our work provided a new insights for desert plants to adapt to drought stress.

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Dynamic nutrient removal potential of a novel submerged macrophyte Rotala rotundifolia, and its growth and physiological response to reduced light available

Cited by 11 publications

References 51 publications

Phosphorus Availability Affects the Photosynthesis and Antioxidant System of Contrasting Low-P-Tolerant Cotton Genotypes

Phosphorus Availability Affects the Photosynthesis and Antioxidant System of Contrasting Low-P-Tolerant Cotton Genotypes

The Growth of Vallisneria natans and Its Epiphytic Biofilm in Simulated Nutrient-Rich Flowing Water

Drought stress-induced the formation of heteromorphic leaves of Populus euphratica Oliv: evidence from gene transcriptome

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