Adaptation of photosynthesis under iron deficiency in maize

Sharma, Samir

doi:10.1016/j.jplph.2007.02.004

Cited by 29 publications

(17 citation statements)

References 33 publications

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“…It is of interest to place our findings in the context of studies that have reported on the general effects of Fe deficiency on chlorophyll synthesis and photosynthesis that have been well documented in the literature (Spiller and Terry, 1980;Andaluz et al, 2006;Nishio and Terry, 1983;Nishio et al, 1985;Sharma, 2007;Timperio et al, 2007;Laganowski et al, 2009;Msilini et al, 2011;Ciaffi et al, 2013;Paolacci et al, 2014;Rodríguez-Celma et al, 2013). Some studies on Fe depletion in plants reported that PSI was the major target of Fe deficiency (Nishio et al, 1985;Timperio et al, 2007), whereas we saw a major effect on the cytochromeb 6 f complex and less on PSI.…”

Section: Fe Sparing In Chloroplasts Targets Abundant Fe Proteinssupporting

confidence: 62%

A Program for Iron Economy during Deficiency Targets Specific Fe Proteins

et al. 2017

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Section: Fe Sparing In Chloroplasts Targets Abundant Fe Proteinssupporting

confidence: 62%

A Program for Iron Economy during Deficiency Targets Specific Fe Proteins

et al. 2017

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“…In photosynthesis, PSI has the highest iron content (12 Fe per RC), and is particularly vulnerable to iron deficiency. This is illustrated by the marked drop in PSI content when diatoms (283), Chlamydomonas (192), plants (270), and possibly Ostreococcus (52), are deprived of iron; PSII and cyt b 6 f complexes are also affected to some extent. In cyanobacteria the reduction in the amount of PSI RC relative to other molecular constituents of the photosynthesis apparatus is particularly severe, leading in some instances to a fourfold decrease in the PSI/PSII ratio (57,98,259).…”

Section: Remodeling Psi Antenna Upon Changes In Iron Availabilitymentioning

confidence: 99%

The Dynamics of Photosynthesis

2008

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Despite recent elucidation of the three-dimensional structure of major photosynthetic complexes, our understanding of light energy conversion in plant chloroplasts and microalgae under physiological conditions requires exploring the dynamics of photosynthesis. The photosynthetic apparatus is a flexible molecular machine that can acclimate to metabolic and light fluctuations in a matter of seconds and minutes. On a longer time scale, changes in environmental cues trigger acclimation responses that elicit intracellular signaling between the nucleo-cytosol and chloroplast resulting in modification of the biogenesis of the photosynthetic machinery. Here we attempt to integrate well-established knowledge on the functional flexibility of light-harvesting and electron transfer processes, which has greatly benefited from genetic approaches, with data derived from the wealth of recent transcriptomic and proteomic studies of acclimation responses in photosynthetic eukaroytes.

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“…Therefore, to conquer the ill effects imposed by iron deficiency, plants are equipped with an efficient and promising tolerance strategies that make their survival possible in such stressful conditions and such adapted mechanism of plants facilitates the controlled uptake of iron, the process termed as iron homeostasis Jeong and Guerinot 2009;Ramirez et al 2009;Wang et al 2012). However, homeostasis of this metal is essential for plant growth and development, because in several studies it has been demonstrated that it seems to be harmful when present in both excessive and limiting amounts (Sharma 2007;Adamski et al 2012;Wang et al 2012). The main and one of the most visually appeared characteristics features of iron deficiency is chlorosis in young leaves, which is caused by decreased chlorophyll biosynthesis (Sharma 2007;Wang et al 2012).…”

Section: Iron (Fe)mentioning

confidence: 99%

“…However, homeostasis of this metal is essential for plant growth and development, because in several studies it has been demonstrated that it seems to be harmful when present in both excessive and limiting amounts (Sharma 2007;Adamski et al 2012;Wang et al 2012). The main and one of the most visually appeared characteristics features of iron deficiency is chlorosis in young leaves, which is caused by decreased chlorophyll biosynthesis (Sharma 2007;Wang et al 2012). Several reports have shown that, those structural component that permit iron to act as an efficient catalyst and cofactor in cellular redox reactions, also have tendency to make it a potent toxin on similar structural chemical properties, when it is up taken by plants in excess of cellular needs, and as a consequence lead to overproduction of toxic oxygen radicals (Olaleye et al 2009;Gill and Tuteja 2010;Sharma et al 2012).…”

Section: Iron (Fe)mentioning

confidence: 99%

Micronutrients and their diverse role in agricultural crops: advances and future prospective

et al. 2015

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In plant sciences, the prodigious significance of micronutrient is unavoidable since plant relies primarily on micronutrient as it has profound influence on array of plant activities. Although micronutrients are abundantly present in the soil but plants usually acquire them in relatively trace amounts; hence, regarded as tracer element. B, Cu, Fe, Mn, Zn are such micronutrients required in minute amounts by plants but inexorably play an eminent role in plant growth and development. Plant metabolism, nutrient regulation, reproductive growth, chlorophyll synthesis, production of carbohydrates, fruit and seed development, etc., are such effective functions performed by micronutrients. These tracer elements when present at adequate level, elevate the healthy growth in plant physiological, biochemical and metabolic characteristics while their deficiency promotes abnormal growth in plants. Prevalence of micronutrient deficiency has become more common in recent years and the rate of their reduction has further been increased by the perpetual demands of modern crop cultivars, high soil erosion, etc. On the basis of present existing condition, it is not difficult to conclude that, the regular increment of micronutrient deficiency will be mostly responsible for the remarkable degradation in substantiality of agricultural crops somewhere in near future and so that this issue has now been the subject of intensified research among the breeder, ingenuities and expertise of science. These micronutrients can also be proven toxic when present at accelerated concentrations and such toxicity level endangers the plant growth. Taking this into consideration, the current review unfolds the phenomenal participation of micronutrients in plant sciences and gives a brief overview of the current understanding of main features concerning several micronutrient acquisitions in agricultural crop plants.

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Adaptation of photosynthesis under iron deficiency in maize

Cited by 29 publications

References 33 publications

A Program for Iron Economy during Deficiency Targets Specific Fe Proteins

A Program for Iron Economy during Deficiency Targets Specific Fe Proteins

The Dynamics of Photosynthesis

Micronutrients and their diverse role in agricultural crops: advances and future prospective

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