Chlorosis of soybean [<i>Glycine max</i>(L.) Merr.] and its relation with the content of chlorophyll, phosphorus, phosphorus/iron and pH vegetative tissues

Uvalle-Bueno, J. Xavier; Romero, Alberto

doi:10.1080/01904168809363845

Cited by 7 publications

(6 citation statements)

References 18 publications

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“…As discussed previously, excessively high rates of P, K, S, Zn, Mn, or Cu fertilizers can also induce Fe deficiency (Astolfi et al, 2003(Astolfi et al, , 2004Brown and Tiffin, 1962;Chen and Barak, 1982;Cumbus et al, 1977;DeKock et al, 1979;Haleem et al, 1992;Hughes et al, 1990;Kadar and Elek, 1999;Lindsay, 1984;Marschner, 1986a;Miller et al, 1990;Roomizadeh and Karimian, 1996;Singh et al, 1996;Szlek et al, 1990;Uvalle-Bueno and Romero, 1988).…”

Section: 4mentioning

confidence: 92%

Iron Nutrition in Field Crops

Hansen

Hopkins

Ellsworth

et al. 2006

Iron Nutrition in Plants and Rhizospheric Microorganisms

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Abstract:Iron (Fe) deficiency is a yield-limiting factor for a variety of field crops across the world and generally results from the interaction of limited soil Fe bioavailability and susceptible genotype cultivation. Iron deficiency broadly occurs across the world in soybean, peanut, dry bean, sorghum, and rice but sporadically under unique or specialized conditions with corn, wheat, and oat. In this chapter, soil properties associated with the expression of Fe deficiency in field crops are defined, and biochemical interactions that promote field observed Fe-deficiency problems are explored. Strategies examined for use with field crops where Fe deficiency is a concern include cultivar selection and screening for tolerance, fertilizer and cultural practices, lowering soil pH, foliar sprays, chelated and complexed Fe fertilizers, concentrated fertilizers, mixed cultivar and companion crop interactions, and management of irrigation and drainage, fertility and seeding practices. Finally, we identify areas where future research is needed.

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Section: 4mentioning

confidence: 92%

Iron Nutrition in Field Crops

Hansen

Hopkins

Ellsworth

et al. 2006

Iron Nutrition in Plants and Rhizospheric Microorganisms

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“…To measure the concentration of minerals (K, Ca, Mg, Fe, Mn, Zn, Cu, Ni), the samples were ground in a small cup blender (Osterizer ® all-metal drive. Boca Ratón, FL, USA) until the grind up point was reached, and the material was transferred to plastic bags (Nasco Whirl-Pak ® , Fort Atkinson Jefferson County, WI, USA), a 1 g sample of both the seed coat and cotyledon was previously digested using a triacid mixture containing pure nitric acid, pure hydrochloric acid, and sulfuric acid according to a ratio of 1:0.1:0.4 ( v/v/v ) [39], in a digester (Labconco ® , Kansas City, MO, USA) for 90 min at a temperature of 150 °C, to eliminate organic matter and obtain the mineral fraction [40]. The concentration of these minerals was measured by atomic absorption spectrophotometry (Thermo Scientific, Cambridge, UK) and is expressed in ppm for micronutrients and percentage for macronutrients.…”

Section: Methodsmentioning

confidence: 99%

Antioxidant Capacity and Phytonutrient Content in the Seed Coat and Cotyledon of Common Beans (Phaseolus vulgaris L.) from Various Regions in Mexico

2018

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The common bean is a good source of protein and bioactive substances giving it a large antioxidant capacity. The extensive variability of bean genotypes creates the need to characterize them with regard to their nutritional value as a tool in biofortification programs. The purpose of this study was to obtain the antioxidant capacity and phytonutrient content both in the seed coat and the cotyledon of 12 common bean varieties from different regions in Mexico. In the case of the whole seed, lightness (L*), a* (red-purple) and b* (yellow-purple) color coordinates were determined, as well as the chroma and hue angle. In the case of the seed coat and the cotyledon, the protein content, the phytonutrient content and the antioxidant capacity (2,2-diphenyl-1-picrylhydrazyl (DPPH)) were evaluated. A significant difference was observed (p ≤ 0.05) among bean varieties and between seed coat and cotyledon in all variables evaluated. Cotyledon showed a higher content of protein, H, Ni, Zn, Cu, N, P, K S and Mn, while the seed coat showed a higher content of Fe, Ca and Mg and a greater antioxidant capacity (59.99%). The Higuera Azufrado bean variety stood out as having a higher content of N, S and protein. We have concluded that the nutritional characterization performed on Mexican bean varieties represents a valuable tool for genetic enhancement programs and crop biofortification strategies.

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“…In this regard, the enzyme most affected by decreased photochemical capacity was Ru5P kinase, the initial activity of which was diminished by 60% by severe Fe deficiency (Fig. 8, B (19,38).…”

Section: Atp and Nadph Limitationmentioning

confidence: 99%

Limiting Factors in Photosynthesis

Arulanantham¹,

Rao²,

Terry³

1990

Plant Physiol.

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Earlier work (SE Taylor, N Terry [1984] 86) has shown that the rate of photosynthesis may be colimited by photosynthetic electron transport capacity, even at low intercellular CO2 concentrations. Here we monitored leaf metabolites diumally and the activities of key Calvin cycle enzymes in the leaves of three treatment groups of sugar beet (Beta vulgaris L.) plants representing three different in vivo photochemical capacities, i.e. Fe-sufficient (control) plants, moderately Fe-deficient, and severely Fe-deficient plants. The results show that the decrease in photosynthesis with Fe deficiency mediated reduction in photochemical capacity was through a reduction in ribulose 1,5-bisphosphate (RuBP) regeneration and not through a decrease in ribulose 1,5-bisphosphate carboxylase/oxygenase activity. Based on measurements of ATP and NADPH and triose phosphate/3-phosphoglycerate ratios in leaves, there was littie evidence that photosynthesis and RuBP regeneration in Fe-deficient leaves were limited directly by the supply of ATP and NADPH. It appeared more likely that photochemical capacity influenced RuBP regeneration through modulation of enzymes in the photosynthetic carbon reduction cycle between fructose-6-phosphate and RuBP; in particular, the initial activity of ribulose-5-phosphate kinase was strongly diminished by Fe deficiency. Starch and sucrose levels changed independently of one another to some extent during the diumal period (both increasing in the day and decreasing at night) but the average rates of starch or sucrose accumulation over the light period were each proportional to photochemical capacity and photosynthetic rate.their study also showed that rubisco activation reached a maximum at PFD well below those needed to saturate photosynthesis. This suggests that some factor other than rubisco modulation (e.g. RuBP regeneration) may have been responsible for controlling photosynthetic rates at higher PFD levels. In the present work, we explored the roles of rubisco modulation and RuBP regeneration in the limitation of photosynthesis under conditions of Fe deficiency mediated reduction in photochemical capacity.In addition, we were interested in determining whether Fe deficiency mediated reduction in photochemical capacity impaired photosynthesis by decreasing the pool sizes of the photochemical products, ATP and NADPH. By measuring the levels of other metabolites such as PGA, triose-P, FBP, and F6P, we gained further information on the effects of photochemical capacity on the conversion of RuBP to PGA, PGA to triose-P, and F6P to RuBP. By measuring the initial and total activities of key enzymes of the PCR cycle, we explored the extent to which photochemical capacity might affect RuBP regeneration through enzyme modulation. Because fluxes through the various biochemical pathways may change with time, the levels of leaf metabolites and nucleotides, as well as the carbon storage compounds, starch, sucrose and glucose, were monitored continuously during the 16 h light/8 h dark cycle. MATERIALS AND M...

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Chlorosis of soybean [Glycine max(L.) Merr.] and its relation with the content of chlorophyll, phosphorus, phosphorus/iron and pH vegetative tissues

Cited by 7 publications

References 18 publications

Iron Nutrition in Field Crops

Iron Nutrition in Field Crops

Antioxidant Capacity and Phytonutrient Content in the Seed Coat and Cotyledon of Common Beans (Phaseolus vulgaris L.) from Various Regions in Mexico

Limiting Factors in Photosynthesis

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