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... Aluminum (Al) is an obstacle to crop production in acidic soils globally. Cations such as Ca and Si are capable of detoxifying toxic metals, especially Al. However, the underlying mechanism of the ameliorative effect is still unclear. In this study, effects of Ca and Si alleviating Al toxicity were investigated on soybean (Glycine max) through root elongation, cation exchange capacity (CEC), Al co ...
... Aluminum (Al) toxicity is an important barrier to soybean (Glycine max (L.) Merr.) production in acid soils. However, little is known about the genes underlying Al tolerance in soybean. We aim to find the key candidate genes and investigate their roles in soybean tolerance to Al toxicity in this study. Comparative transcriptome analyses of the Al-tolerant (KF) and Al-sensitive (GF) soybean varieti ...
... PURPOSE: Plant cell wall polysaccharide composition is closely related to the occurrence of aluminum (Al) toxicity and Al resistance. Glycosyltransferases participate in cell wall polysaccharide biosynthesis. Our previous microarray analysis showed that Al increased the transcriptional abundance of UDP-glycosyltransferase (UGT) in soybean (Glycine max). The present study aimed to clarify if GmUGTs ...
Glycine max; Ultisols; acidity; aluminum; colorimetry; dolomite; field capacity; lignite; phytotoxicity; plant height; soil remediation; soil water content; soybeans; vegetative growth; Indonesia
Abstract:
... Phytotoxicity of soil aluminum (Al), both directly to the plant growth as well as indirectly through the increase of soil potential acidity, is closely related to the occurrence of various soil soluble-Al species. Amongst them, Al3+ and monomeric-Al species are the primary causes of Al phytotoxicity in soils with high Al content. This study was aimed to evaluate the effects of soil amelioration wi ...
... Heavy metal accumulation in crop grains due to hazardous metal contamination is considered a great concern. However, phytobeneficial fungi are reported to have important abilities for the biosafety of crops grown in contaminated soil. Therefore, the current study was undertaken to explore the mutualistic association of plant growth-promoting endophytic fungi in reducing heavy metal concentration i ...
... In the present study, we investigated the sites of aluminum (Al) accumulation and its effects on the growth, morphology and nutritional status in root tips of soybean (Glycine max L.) genotype Conquista. The seedlings were exposed to nutrient Clark solution, pH 4.0, with 0 (control) and 100 µM of Al for 24, 48 and 72 h. Our results showed an Al accumulation in the superficial layers of the root ti ...
Tamara Araújo Schenfert; Rafael Felippe Ratke; Valter Casarin; Juliano Magalhães Barbosa; Daniela Viera Chaves; Manoel Ribeiro de Holanda Neto; Cassiano Garcia Roque; Halisson Cesar Vinci Carlos
... Soybean production in the Cerrado area is limited by the acidity and excess of aluminum in the soil. Thus, the use of agricultural lime and gypsum is necessary to decrease these factors and favor soybean growth. This study aimed to evaluate the effect of the application of lime and gypsum doses on soybean yield and nutrition, in a no-tillage system (NTS). The experiment consisted of a completely r ...
DNA; Glycine max; Oxisols; agroecosystems; aluminum; carbon; field experimentation; grain yield; indigenous species; myo-inositol; no-tillage; nuclear magnetic resonance spectroscopy; nutrition; pH; phosphogypsum; phosphorus; soil fertility; soybeans; Brazil
Abstract:
... Broadcast application of lime or phosphogypsum to suppress aluminum (Al) in soils can influence chemistry and fate of phosphorus (P) in natural environments. However, the long-term effects of these amendments in organic P (Pₒ) forms and in soil biochemical properties remain unclear. This study assessed the effect of lime and phosphogypsum management on Pₒ contents, soil biochemical properties, and ...
... This study investigated the antioxidant defense system involved in the tolerance of soybean (Glycine max) to aluminum (Al) stress. Physiological assays showed that the amount of superoxide free radicals (O₂ ⁻), hydrogen peroxide (H₂O₂), and malondialdehyde (MDA) were significantly lower in an Al-resistant soybean cultivar (cv. PI416937) than in an Al-sensitive soybean cultivar (cv. Huachun18). Com ...
... Aluminum (Al) toxicity in acidic soils is a global agricultural problem that limits crop productivity through the inhibition of root growth. However, poor management associated with the application of soil acidity amendments such as lime (CaCO₃) in certain crop types can pose a threat to low-input farming practices. Accordingly, it is important to develop appropriate techniques for the management ...
... Distribution of chemical forms of manganese(II) (Mn(II)) on plant roots may affect Mn(II) absorption by plants and toxicity of Mn(II) to plants at its high level. The chemical forms of Mn(II) on soybean roots were investigated to determine the main factors that affect their distribution and relationship with Mn(II) plant toxicity. Fresh soybean roots were reacted with Mn(II) in solutions, and Mn(I ...
... To elucidate the mechanism of soybean resistance to Al, physiological and biochemical indices and antioxidant enzyme expression and activities were systematically analyzed in Al-sensitive (Glycine max Merr., Yunnan Province of China, SB) and Al-resistant Dambo (Glycine max Merr., Kyoto of Japan, RB) black soybean plants. According to the results, the contents of hydrogen peroxide (H2O2) and malond ...
... This study investigates the stress-mitigating effects of endophytic Penicillium funiculosum LHL06 on soybean roots via modulation of physio-biochemical, molecular, and proteomic responses to combined heavy metal (Ni, Cu, Pb, Cr, and Al) toxicity. Preliminary screening revealed that LHL06 can tolerate and remediate combined heavy metal contamination in its media and upregulate gibberellins (GA1, GA ...
... Cover crops can provide changes in soil chemical and physical properties, which could allow a sustainable development of soybean and upland rice rotation in Brazilian Cerrado. The objective of this study was to determine the effects of cover crops (cultivated in the offseason) in the soybean-upland rice rotation (cultivated in the summer season) on the soil chemical and physical properties, yield ...
... Relationships between greenhouse gas emissions, yields, and soil properties are not well known. Utilizing two datasets from long-term cropping systems in Illinois, USA, our we aim to address these knowledge gaps. The objective of this study was to explore the relationships between the physical and chemical properties and greenhouse gas (GHG) emissions of soil, and cash crop yields over a four-year ...
... A vast upland area in Madagascar remains uncultivated because of erratic rainfall and because of the low fertility of the soils that are highly weathered and depleted in available phosphorus (P). This study was set up to identify to what extent farmyard manure (FYM) can overcome P deficiency and increase the use efficiency of mineral P (TSP). Rainfed rice was grown with soybean in rotation (two fi ...
... Nitrogen (N) fertilization in agricultural soils has been receiving worldwide attention due to its detrimental effects on ecosystem services, particularly on microbial N transformation. However, few studies provide a complete picture of N-fertilization effects on the N transformation cycle within a single agricultural ecosystem. Here, we explored the main steps of the microbial N cycle, using targ ...
... In this study, Al-sensitive black soybean (Glycine max (L.) Merr.) specimens were treated in Hoagland solutions containing 50–400µM Al for 1–4 days. The measurement for NO3- uptake showed that the NO3- uptake decreased gradually as the Al concentration and treatment time increased, suggesting that Al stress significantly reduced the NO3- uptake by soybean. Under 100-µM Al stress for 4 days, the pl ...
... Aluminum (Al) toxicity in acidic soils is a major factor restricting crop production. Although the molecular mechanisms of Al responses have been extensively investigated, microRNA (miRNA) mediated differential Al tolerance in different soybean genotypes remains largely unknown. In this study, two soybean [Glycine max (L.) Merr.] genotypes, Al-tolerant BX10 and Al-sensitive BD2, were treated with ...
... Liming reduces acidity neutralizes aluminum (Al ³⁺) and manganese (Mn ²⁺) toxicities and increases calcium (Ca ²⁺) and magnesium (Mg ²⁺) concentrations in many acid soils of the world. However, it reduces the availability of other cationic micronutrients that are essential for plant growth. Therefore, an experiment was conducted in greenhouse conditions for assessing the effects of higher lime rat ...