Assessing the variation in traits for manganese deficiency tolerance among maize genotypes

Long, Lizhi; Kristensen, R. K.; Guo, Jingxuan; Chen, Fanjun; Pedas, Pai; Zhang, Guoping; Schjøerring, Jan K.; Yuan, Lixing

doi:10.1016/j.envexpbot.2020.104344

Cited by 12 publications

(10 citation statements)

References 35 publications

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“…As one of the essential micronutrients for plant growth, manganese (Mn) acts as an activator of many enzymes, serving various functions in a set of physiological and biochemical processes ( Millaleo et al, 2010 ; Marschner, 2012 ; Long et al, 2021 ). Being a trace element, Mn is required by plants at a low dose and can cause phytotoxicity when present in excess ( Millaleo et al, 2010 ; Shao et al, 2017 ).…”

Section: Introductionmentioning

confidence: 99%

Characterization of Metal Tolerance Proteins and Functional Analysis of GmMTP8.1 Involved in Manganese Tolerance in Soybean

Dong

Jia

et al. 2021

Front. Plant Sci.

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Manganese is an essential micronutrient for plant growth but can be toxic to plants when it reaches excessive levels. Although metal tolerance proteins (MTPs), which belong to the cation diffusion facilitator (CDF) family, have been demonstrated to play critical roles in manganese (Mn) tolerance in plants, the characteristics and functions of GmMTP members in the response of soybean (Glycine max) to Mn toxicity have not been documented. In this study, growth inhibition was observed in soybean plants that were exposed to a toxic level of Mn in hydroponics, as reflected by the generation of brown spots, and decreased leaf chlorophyll concentration and plant fresh weight. Subsequent genome-wide analysis resulted in the identification of a total of 14 GmMTP genes in the soybean genome. Among these GmMTPs, 9 and 12 were found to be regulated by excess Mn in leaves and roots, respectively. Furthermore, the function of GmMTP8.1, a Mn-CDF homologue of ShMTP8 identified in the legume Stylosanthes hamata that is involved in Mn detoxification, was characterized. Subcellular localization analysis showed that GmMTP8.1 was localized to the endoplasmic reticulum (ER). Heterologous expression of GmMTP8.1 led to the restoration of growth of the Mn-hypersensitive yeast (Saccharomyces cerevisiae) mutant Δpmr1, which is made defective in Mn transport into the Golgi apparatus by P-type Ca/Mn-ATPase. Furthermore, GmMTP8.1 overexpression conferred tolerance to the toxic level of Mn in Arabidopsis (Arabidopsis thaliana). Under excess Mn conditions, concentrations of Mn in shoots but not roots were decreased in transgenic Arabidopsis, overexpressing GmMTP8.1 compared to the wild type. The overexpression of GmMTP8.1 also led to the upregulation of several transporter genes responsible for Mn efflux and sequestration in Arabidopsis, such as AtMTP8/11. Taken together, these results suggest that GmMTP8.1 is an ER-localized Mn transporter contributing to confer Mn tolerance by stimulating the export of Mn out of leaf cells and increasing the sequestration of Mn into intracellular compartments.

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Section: Introductionmentioning

confidence: 99%

Characterization of Metal Tolerance Proteins and Functional Analysis of GmMTP8.1 Involved in Manganese Tolerance in Soybean

Dong

Jia

et al. 2021

Front. Plant Sci.

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“…The photosynthetic apparatus might also be impaired due to a reduction in the number of chloroplasts and a decrease in the chlorophyll content resulting from excessive Mn accumulation (Demirevska- Kepova et al, 2004), and enhanced production of carotenoids, leading to symptoms similar to those triggered by photo inhibition (Doncheva et al, 2009). Long et al (2021) documented substantial genotypic differences in maize genotypes in photosynthetic responses to Mn deficiency.…”

Section: Results and Discussion Changes In Leaf Chlorophyll (A+b) And...mentioning

confidence: 99%

Influence of different manganese concentrations on eggplant (Solanum melongena L.) grown in a hydroponic system

Ulaş

YÜCEL²

2022

International Journal of Agriculture Environment and Food Sciences

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The study aimed to evaluate the effect of three different manganese (Mn) concentrations on the plant growth, leaf chlorophyll, carotenoid content, photosynthetic activity, and root morphological development in eggplant (Solanum melongena L. 'Adana cv. Dolmalık' and 'Köksal cv. F1'). Plants were grown continuously in aerated nutrient solution by using a deep-water culture (DWC) technique in a fully automated climate room. A randomized block design with three replications was used. Both excessive (400 µM) and insufficient (0.4 µM) Mn concentrations in the root zone reduced the shoot fresh and dry matter, branch number, leaf area, and leaf chlorophyll content in both examined genotypes in comparison with optimal Mn concentrations (200 µM). Köksal cv. F1 produced higher shoot and root biomasses, root:shoot ratio, total leaf number, leaf total chlorophyll and carotenoid content, total leaf area, and average root diameter at the low concentration of Mn. Conversely, Adana cv. Dolmalık produced significantly higher stem length, shoot and root biomasses, total root length and root volume at high Mn concentrations. Overall, both deficit and excess Mn nutrition could induce disorders in the growth and development of eggplant which may reduce crop yield.

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“…Then, the seedlings were cut at 30 cm height of the substrate for uniformity, and the application of the treatments was started. After 28 days of uniformity cut and start of treatments, the seedlings were transferred to polypropylene vessels that had a volume of 1.5 dm 3 and had been filled with washed sand.…”

Section: Installation Of the Experimentsmentioning

confidence: 99%

“…Manganese (Mn) is important in the photosynthetic process and antioxidant defense system of plants for its functions as enzyme activator, enzyme cofactor, and electron transporter [1]. However, soils with low moisture, aerated, and with high content of organic matter, as well as alkaline soils, have reduced Mn availability, inducing deficiency in crops [2] established in different soils worldwide [3]. Furthermore, Mn deficiency has also been reported in tropical regions due to anthropic activity, which resulted in an excessive amount of limestone on the soil surface [4,5], aggravating the problem of deficiency in agricultural production.…”

Section: Introductionmentioning

confidence: 99%

Interaction of silicon and manganese in nutritional and physiological aspects of energy cane with high fiber content

et al. 2022

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Background Silicon (Si) is a multiple stress attenuator element in plants, however more research is needed to elucidate the actions in the plants defense system with low nutrition of manganese (Mn) for a prolonged period, and the attenuation mechanisms involved in the effects of Mn deficiency on energy cane with high fiber content. Thus, the objective of this study was to evaluate whether Si reduces the oxidative stress of the energy cane grown in low Mn in nutrient solution, to mitigate the effects of Mn deficiency, improving enzymatic and non-enzymatic defense, uptake of Mn the plant growth. Methods An experiment was carried out with pre-sprouted seedlings of Saccharum spontaneum L. in a 2 × 2 factorial scheme in five replications in which the plants were grown under sufficiency (20.5 μmol L−1) and deficiency (0.1 μmol L−1) of Mn combined with the absence and presence of Si (2.0 mmol L−1) for 160 days from the application of the treatments. The following parameters were evaluated: accumulation of Mn and Si, H2O2, MDA, activity of SOD and GPOX, total phenol content, pigments, and quantum efficiency of PSII. Results Mn deficiency induced the oxidative stress for increase the H2O2 and MDA content in leaves of plants and reduce the activity of antioxidant enzymes and total phenols causing damage to quantum efficiency of photosystem II and pigment content. Si attenuated the effects of Mn deficiency even for a longer period of stress by reducing H2O2 (18%) and MDA (32%) content, and increased the Mn uptake efficiency (53%), SOD activity (23%), GPOX (76%), phenol contents, thus improving growth. Conclusions The supply of Si promoted great nutritional and physiological improvements in energy cane with high fiber content in Mn deficiency. The results of this study propose the supply of Si via fertirrigation as a new sustainable strategy for energy cane cultivation in low Mn environments.

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Assessing the variation in traits for manganese deficiency tolerance among maize genotypes

Cited by 12 publications

References 35 publications

Characterization of Metal Tolerance Proteins and Functional Analysis of GmMTP8.1 Involved in Manganese Tolerance in Soybean

Characterization of Metal Tolerance Proteins and Functional Analysis of GmMTP8.1 Involved in Manganese Tolerance in Soybean

Influence of different manganese concentrations on eggplant (Solanum melongena L.) grown in a hydroponic system

Interaction of silicon and manganese in nutritional and physiological aspects of energy cane with high fiber content

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