Effects of Rhizophagus clarus and P availability in the tolerance and physiological response of Mucuna cinereum to copper

Ferreira, Paulo Ademar Avelar; Tiecher, Tales; Tiecher, Tadeu Luís; Rangel, Wesley de Melo; Soares, Cláudio Roberto Fonsêca Sousa; Deuner, Sidnei; Tarouco, Camila Peligrinotti; Giachini, Admir José; Nicoloso, Fernando Teixeira; Brunetto, Gustavo; Coronas, Mariana Vieira; Ceretta, Carlos Alberto

doi:10.1016/j.plaphy.2017.11.006

Cited by 20 publications

(12 citation statements)

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“…Most studies believed that the disease resistance-related enzyme activity is positively correlated with the disease resistance index, and it is a protective measure against plant pathogens. The enzyme activity of the diseased plants was lower than that of the disease-resistant plants [32][33][34], which is consistent with the results of this study. Therefore, in this article, we analyzed their ability to resist external stress by measuring the chlorophyll content and POD and SOD activity in 3186M, 3186L, 3-071, and JR.…”

Section: Abundant Type III Nonglandular Trichomes and A Higher Averagsupporting

confidence: 91%

The Roles of Different Types of Trichomes in Tomato Resistance to Cold, Drought, Whiteflies, and Botrytis

et al. 2020

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The tomato (Solanum lycopersicum) is one of the most popular vegetables in the world. In tomato production, due to the effects of diseases, insect pests, drought, and cold damage, large-scale production reduction is often caused. Plant trichomes are protruding attachments distributed on the surface of different plants, providing protection for plants. When the plant is under external stress, the trichomes can play an important role in protecting the plant from damage through its physical structure. The density and type of different trichomes are closely related to the stress resistance of tomatoes. The tomato wo mutant LA3186 (referred to herein as "3186M"), LA3186 (referred to herein as "3186L"), the ln mutant LA3-071 (referred to herein as "3-071"), and the tomato cultivar Jia Ren (referred to herein as "JR", used as the control), which possess different numbers of trichomes on the surface of the leaves, were used as materials; the glandular characteristics, types, and densities of the trichomes were observed under a scanning electron microscope (SEM); and transmission electron microscopy (TEM) was used to observe the subcellular structure in the leaves. The relationship between the different tomato trichomes and stress resistance was investigated with treatments of low temperature, drought, disease, and insects. This study provides a theoretical foundation and practical basis for the further utilization and regulation of the trichome-related characteristics of tomatoes.Agronomy 2020, 10, 411 2 of 16 VII are glandular trichomes, and II, III, V and VIII are nonglandular trichomes [8]. Type I glandular trichomes consist of six to 10 cells of slender glandular trichomes, are 2-3 mm in length, and have spherical and multicellular bases with small, round glandular cells at the hairy tip. Type I trichomes mainly contain acyl glucose. Type II nonglandular trichomes resemble type I trichomes but are nonglandular and short (0.2-1.0 mm) and have spherical and multicellular bases. Both type I glandular trichomes and type II nonglandular trichomes are spherical and multicellular at their base. The glands of the type I, IV, and VI trichomes contain acyl flavonoids, terpenoids, and sugars. Of these compounds, acyl sugar has a very high viscosity and can thus stick to herbivores and prevent them from feeding freely on the surface of a plant [9]. In addition, an increase in the flavonoid content on the surface of plants can prevent the exposure of the plant to highly penetrating UV-A (longwave blackspot-effect ultraviolet rays) and excessive damage [5]. Tomatoes can also produce or release some highly toxic compounds to prevent pest damage [2]. Dong and Huang found that trichomes of wheat cultivars resistant to root rot were significantly longer than those of commonly susceptible cultivars. This finding suggested that trichomes on plant leaves play an important role in resistance to wheat root rot pathogens [10,11].Trichomes can also protect plants from being damaged by excessive temperature and drought stress [12][13][14]. Th...

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Section: Abundant Type III Nonglandular Trichomes and A Higher Averagsupporting

confidence: 91%

The Roles of Different Types of Trichomes in Tomato Resistance to Cold, Drought, Whiteflies, and Botrytis

et al. 2020

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“…Previous studies adopted strategies for the reduction of the toxic effects of Cu on plants. Ferraire et al [ 5 ] showed that the inoculation of arbuscular mycorrhizal fungi (AMF) and the application of phosphate-related fertilizer ameliorated the Cu toxicity in Mucuna cinereum by decreasing the availability of Cu 2+ in the soil solution. Regarding Cu toxicity in grapevines, previous studies showed that some amendments, such as limestone, vermicompost, and calcium silicate, were effective in reducing the Cu phytotoxicity in young vines, which was due to increasing pH in the soil, leading to a decreased Cu 2+ availability [ 14 , 26 , 28 ].…”

Section: Discussionmentioning

confidence: 99%

“…Copper has a dual effect on plants [ 1 ]. At an optimal level, Cu is an important micronutrient in regulatory metabolic processes, including photosynthesis and carbohydrate partitioning in plants [ 3 , 4 , 5 ]. However, excess Cu in vineyard soils may result in several phytotoxic effects on grapevines, such as cell membrane damage, nutritional imbalances, leaf chlorosis, growth inhibition, a reduction in chlorophyll content, and even death [ 6 , 7 ].…”

Section: Introductionmentioning

confidence: 99%

Modeling Alleviative Effects of Ca, Mg, and K on Cu-Induced Oxidative Stress in Grapevine Roots Grown Hydroponically

Juang

Lo²,

Chen

2021

Molecules

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The aim of this study was to determine the pattern of alleviation effects of calcium (Ca), magnesium (Mg), and potassium (K) on copper (Cu)-induced oxidative toxicity in grapevine roots. Root growth, Cu and cation accumulation, reactive oxygen species (ROS) production, and antioxidant activities were examined in grapevine roots grown in nutrient solutions. The experimental setting was divided into three sets; each set contained a check (Hoagland solution only) and four treatments of simultaneous exposure to 15 μM Cu with four cation levels (i.e., Ca set: 0.5, 2.5, 5, and 10 mM Ca; Mg set: 0.2, 2, 4, and 8 mM Mg; K set: 0.6, 2.4, 4.8, and 9.6 mM K). A damage assessment model (DAM)-based approach was then developed to construct the dose-effect relationship between cation levels and the alleviation effects on Cu-induced oxidative stress. Model parameterization was performed by fitting the model to the experimental data using a nonlinear regression estimation. All data were analyzed by a one-way analysis of variance (ANOVA), followed by multiple comparisons using the least significant difference (LSD) test. The results showed that significant inhibitory effects on the elongation of roots occurred in grapevine roots treated with 15 μM Cu. The addition of Ca and Mg significantly mitigated phytotoxicity in root growth, whereas no significant effect of K treatment on root growth was found. With respect to oxidative stress, ROS and malondialdehyde (MDA) contents, as well as antioxidant (superoxide dismutase (SOD), catalase (CAT), and ascorbate peroxidase (APX)) activities, were stimulated in the roots after exposure to 15 μM Cu for three days. Moreover, H2O2 levels decreased significantly as Ca, Mg, and K concentrations increased, indicating that the coexistence of these cations effectively alleviated Cu-induced oxidative stress; however, alleviative effects were not observed in the assessment of the MDA content and antioxidant enzyme activities. Based on the DAM, an exponential decay equation was developed and successfully applied to characterize the alleviative effects of Ca, Mg, and K on the H2O2 content induced by Cu in the roots. In addition, compared with Mg and K, Ca was the most effective cation in the alleviation of Cu-induced ROS. Based on the results, it could be concluded that Cu inhibited root growth and Ca and Mg absorption in grapevines, and stimulated the production of ROS, lipid peroxidation, and antioxidant enzymes. Furthermore, the alleviation effects of cations on Cu-induced ROS were well described by the DAM-based approach developed in the present study.

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“…4B). Muzammual et al [21] have reported that POD activity in ramie (Boehmeria nivea L.) leaves increased rst and then decreased with increasing Cu concentration, while some studies reported inhibition of POD activity under Cu stress in the leaves of Rhizophagus clarus [22] and also reported the enhancement of POD activity under Cu stress in the leaves of Medicago sativa [17]. These results indicate that changes in heavy metal-induced antioxidant enzyme activities are related to treatment concentrations and plant species.…”

Section: Discussionmentioning

confidence: 99%

Physiological and Biochemical Properties of Cotton in Response to Copper Stress

Zhou

Zhao

et al. 2020

Preprint

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Backgroundcopper (Cu) is an essential micronutrient, required for plant growth and development. However, high concentrations of Cu can be extremely toxic to plant. This study investigate the tolerance mechanism of cotton under copper stress and its potential for soil pollution improvement.ResultsThe hybrid cotton variety (Zhongmian 63) and its two parent lines were selected as materials. Cotton seedling were treated with different Cu concentrations (0, 0.2, 50, 100, 200 μM) for 10 days in hydroponic condition. The results showed that the stem height, root length, and leaf area of cotton seedlings appear to have a down trend with the increase of Cu concentration. Increasing Cu concentration promoted Cu accumulation in roots, stems, and leaves of all the three cotton genotypes, however, the roots region was the main Cu storage organ, followed by leaves and stems regions. Compared with the parent lines, the roots of Zhongmian 63 are more capable of enriching Cu and have the least amount of Cu transported to the shoots. Therefore, the toxicity of Cu to cotton seedling is effectively alleviated. Cu-caused oxidative stress to cotton leaves was evident by over accumulation of H2O2 and MDA. POD activity and soluble sugar content increased firstly and then decreased compared with the control group. GSH content increased and photosynthetic pigment content decreased with increasing copper concentration in nutrient solution. ConclusionOur results suggest that the hybrid cotton variety Zhongmian 63 performed well under Cu stress. This lays the theoretical foundation for further analysis on molecular mechanism of cotton resistance to copper and promoting the large-scale planting Zhongmian 63 in the copper-contaminated area.

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Effects of Rhizophagus clarus and P availability in the tolerance and physiological response of Mucuna cinereum to copper

Cited by 20 publications

References 83 publications

The Roles of Different Types of Trichomes in Tomato Resistance to Cold, Drought, Whiteflies, and Botrytis

The Roles of Different Types of Trichomes in Tomato Resistance to Cold, Drought, Whiteflies, and Botrytis

Modeling Alleviative Effects of Ca, Mg, and K on Cu-Induced Oxidative Stress in Grapevine Roots Grown Hydroponically

Physiological and Biochemical Properties of Cotton in Response to Copper Stress

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