Plant Macro‐ and Micronutrient Minerals

Grusak, Michael A.; Broadley, Martin R.; White, Philip J.

doi:10.1002/9780470015902.a0001306.pub2

Cited by 38 publications

(41 citation statements)

References 28 publications

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“…However, moringa leaves from Ethiopia were not analysed for micro-nutrients and therefore had unknown contents of micro-nutrients. The slight differences in mineral composition might be attributed to soil-nutrient compositions at production sites as discussed by Grusak (2001). Interestingly, M. oleifera maintains its nutritional values almost at the same level despite regional ecological differences among the four countries.…”

Section: Comparison Of M Oleifera Leaves Nutritional Compositionmentioning

confidence: 93%

Comparative Proximate and Mineral Composition of Moringa oleifera and Moringa ovalifolia Grown in Central Namibia

Korsor¹,

Ntahonshikira²,

Bello³

et al. 2017

SAR

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The objective of this study was to compare the proximate and mineral compositions of Moringa oleifera and Moringa ovalifolia grown together at Neudamm Experimental Farm in central Namibia. Moringa oleifera is well known for its rich nutritional value and was compared to the nutritional value of M. ovalifolia, a native plant of Namibia and Angola, which is less studied. Namibia being a semi-arid country, many plants in the rangelands are low in nutrients essential for livestock nutrition. This creates the necessity for planting fodder trees like moringa that withstand the harsh climatic conditions and retain their nutritional quality for the production of sustained livestock supplement. Leaves of both Moringa species were harvested with twiglets, shade dried fortnightly and taken to the laboratory where they were ground and passed through 1 mm sieve for proximate and mineral analysis. Statistically, M. oleifera nutrient values were significantly different (P < 0.05) in moisture, ash, crude protein (CP) and crude fiber (CF) from M. ovalifolia, but had no differences in fat, acid detergent fiber (ADF) and neutral detergent fiber (NDF). Also, M. oleifera was significantly different (P < 0.05) from M. ovalifolia in potassium (K), magnesium (Mg), copper (Cu) and zinc (Zn), but there were no differences in calcium (Ca), sodium (Na), phosphorus (P), iron (Fe) and manganese (Mn) values. This implies that both Moringa species have similar quantity of Ca, Na, P, Fe and Mn in their leaf tissues. The almost identical nutrient values of the two Moringa species, suggests that M. ovalifolia could serve as an alternative supplement for livestock since there is a known human-livestock competition for M. oleifera, and since M. ovalifolia is native and well adapted to the harsh environmental conditions of Namibia.

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Section: Comparison Of M Oleifera Leaves Nutritional Compositionmentioning

confidence: 93%

Comparative Proximate and Mineral Composition of Moringa oleifera and Moringa ovalifolia Grown in Central Namibia

Korsor¹,

Ntahonshikira²,

Bello³

et al. 2017

SAR

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“…The functional ionome comprises the 14 mineral nutrients required by plants: N, P, K, Ca, Mg, sulphur (S), chlorine (Cl), boron (B), iron (Fe), manganese (Mn), copper (Cu), zinc (Zn), nickel (Ni) and molybdenum (Mo). Each of these elements has unique functions and, consequently, cannot be replaced by any other element (Hawkesford et al , Broadley et al , Grusak et al ).…”

Section: The Functional Ionomementioning

confidence: 99%

Variation in the angiosperm ionome

Neugebauer

Broadley

El‐Serehy

et al. 2018

Physiologia Plantarum

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The ionome is defined as the elemental composition of a subcellular structure, cell, tissue, organ or organism. The subset of the ionome comprising mineral nutrients is termed the functional ionome. A ‘standard functional ionome’ of leaves of an ‘average’ angiosperm, defined as the nutrient composition of leaves when growth is not limited by mineral nutrients, is presented and can be used to compare the effects of environment and genetics on plant nutrition. The leaf ionome of a plant is influenced by interactions between its environment and genetics. Examples of the effects of the environment on the leaf ionome are presented and the consequences of nutrient deficiencies on the leaf ionome are described. The physiological reasons for (1) allometric relationships between leaf nitrogen and phosphorus concentrations and (2) linear relationships between leaf calcium and magnesium concentrations are explained. It is noted that strong phylogenetic effects on the mineral composition of leaves of angiosperm species are observed even when sampled from diverse environments. The evolutionary origins of traits including (1) the small calcium concentrations of Poales leaves, (2) the large magnesium concentrations of Caryophyllales leaves and (3) the large sulphur concentrations of Brassicales leaves are traced using phylogenetic relationships among angiosperm orders, families and genera. The rare evolution of hyperaccumulation of toxic elements in leaves of angiosperms is also described. Consequences of variation in the leaf ionome for ecology, mineral cycling in the environment, strategies for phytoremediation of contaminated land, sustainable agriculture and the nutrition of livestock and humans are discussed.

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“…Furthermore, adequate nitrogen concentrations reduce oxidative stress and membrane damage under drought stress through physio-biochemical adjustments, including higher level of nitrogenous compounds, up-regulation of N-associated metabolic enzymes activities, and higher accumulation of osmolytes [60]. Meanwhile, the lower S concentration on stems of droughted plants, associated with a lower allocation of S to stems (Tables 3 and 4), suggest that S was preferentially allocated to leaves and roots, in order to meet metabolic functions as ROS detoxification, since the tripeptide glutathione is an important sulphur compound [61]. In addition, sulphur is of great significance as structural component of proteins and functioning of enzymes, as well vitamins and cofactors (biotin, thiamine, CoA, and S-adenosyl-Met), and a variety of secondary products [62].…”

Section: Aba Pre-treatment Modulates Olive Tree Ionome After Successimentioning

confidence: 99%

“…Furthermore, the application of ABA potentiated the drought-induced reduction of K concentration in leaves. However, by other side, ABA was effective to maintain an adequate concentration of K in roots (Table 3), in association with higher allocation of K to roots (Table 4), which has a significant relevance, as K is a principal cation in vacuoles, contributing to osmotic adjustment and, thus, to increased expansion of cells via high cell turgor pressure [61,67]. Thus, these results support the assumption of Sardans and Peñuelas [68] that the patterns of allocation of nutrients allow an optimum trade-off between the rate of growth and the capacity of tolerance to stress [68].…”

Section: Aba Pre-treatment Modulates Olive Tree Ionome After Successimentioning

confidence: 99%

Foliar Pre-Treatment with Abscisic Acid Enhances Olive Tree Drought Adaptability

Brito

Dinis

Ferreira

et al. 2020

Plants

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Water is the most widely limiting factor for plants distribution, survival and agricultural productivity, their responses to drought and recovery being critical for their success and productivity. Olea europaea L. is a well-adapted species to cyclic drought events, still at considerable expense of carbon reserves and CO 2 supply. To study the role of abscisic acid (ABA) as a promoter of drought adaptability, young potted olive trees subjected to three drought-recovery cycles were pre-treated with ABA. The results demonstrated that ABA pre-treatment allowed the delay of the drought effects on stomatal conductance (g s ) and net photosynthesis (A n ), and under severe drought, permitted the reduction of the non-stomatal limitations to A n and the relative water content decline, the accumulation of compatible solutes and avoid the decline of photosynthetic pigments, soluble proteins and total thiols concentrations and the accumulation of ROS. Upon rewatering, ABA-sprayed plants showed an early recovery of A n . The plant ionome was also changed by the addition of ABA, with special influence on root K, N and B concentrations. The improved physiological and biochemical functions of the ABA-treated plants attenuated the drought-induced decline in biomass accumulation and potentiated root growth and whole-plant water use efficiency after successive drought-rewatering cycles. These changes are likely to be of real adaptive significance, with important implications for olive tree growth and productivity.Olive tree (Olea europaea L.) is a woody species which grows under the typical Mediterranean semi-arid conditions, a region already affected by multiple environmental constraints factors, and particularly susceptible to climate change, being expected higher temperatures and shifts in the precipitation patterns, leading to higher evaporative demand and lower soil water availability [4]. Although olive is a crop well-adapted to harsh conditions, water deficit has negative repercussions on water relations, carbon assimilation, oxidative pathways, nutrient uptake and biomass accumulation [1,[5][6][7][8][9][10]. Moreover, the adaptation mechanisms adopted by this species against drought stress are activated at the expense of carbon reserves and may be detrimental with the increased duration and intensity of stress. The increasing consciousness regarding the nutritional value of olive oil has enhanced the demand for this product and, thus, it is crucial to increase olive trees ability to conserve and use the scarce available water and the low and unexpected rainfall during the summer season.Abscisic acid (ABA) is a well-known plant stress hormone, being assumed as a potential mediator for induction of drought tolerance in plants [2]. Under drought, ABA elicits two distinct responses, where the earliest and most rapid is stomatal closure, which minimizes the water loss through transpiration. Further, ABA gradually increases hydraulic conductivity and promotes root cell elongation, enabling the plant to recover, and inducing the a...

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Plant Macro‐ and Micronutrient Minerals

Cited by 38 publications

References 28 publications

Comparative Proximate and Mineral Composition of Moringa oleifera and Moringa ovalifolia Grown in Central Namibia

Comparative Proximate and Mineral Composition of Moringa oleifera and Moringa ovalifolia Grown in Central Namibia

Variation in the angiosperm ionome

Foliar Pre-Treatment with Abscisic Acid Enhances Olive Tree Drought Adaptability

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