Effects of 4-month Fe deficiency exposure on Fe reduction mechanism, photosynthetic gas exchange, chlorophyll fluorescence and antioxidant defense in two peach rootstocks differing in Fe deficiency tolerance

Molassiotis, Athanassios; Tanou, Georgia; Diamantidis, Grigorios; Patakas, Angelos; Therios, Ioannis

doi:10.1016/j.jplph.2004.11.016

Cited by 126 publications

(90 citation statements)

References 36 publications

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“…There are numerous studies that have used prompt ChlF parameters to analyze the effects on photochemical functions of other mineral deficiencies, such as calcium (Liu et al 2009;Lauriano et al 2006), magnesium (Smethurst et al 2005), and iron (Molassiotis et al 2006). As many nutrients have specific effects on PSII photochemistry, the question here is whether it is possible to identify nutrient deficiencies using chlorophyll fluorescence kinetics.…”

Section: Nutrient Deficiency Stressmentioning

confidence: 99%

Chlorophyll a fluorescence as a tool to monitor physiological status of plants under abiotic stress conditions

et al. 2016

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Plants living under natural conditions are exposed to many adverse factors that interfere with the photosynthetic process, leading to declines in growth, development, and yield. The recent development of Chlorophyll a fluorescence (ChlF) represents a potentially valuable new approach to study the photochemical efficiency of leaves. Specifically, the analysis of fluorescence signals provides detailed information on the status and function of Photosystem II (PSII) reaction centers, lightharvesting antenna complexes, and both the donor and acceptor sides of PSII. Here, we review the results of fast ChlF analyses of photosynthetic responses to environmental stresses, and discuss the potential scientific and practical applications of this innovative methodology. The recent availability of portable devices has significantly expanded the potential utilization of ChlF techniques, especially for the purposes of crop phenotyping and monitoring.

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Section: Nutrient Deficiency Stressmentioning

confidence: 99%

Chlorophyll a fluorescence as a tool to monitor physiological status of plants under abiotic stress conditions

et al. 2016

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“…auxin; Schmidt et al ., 2000; Santi and Schmidt, 2008, 2009; Bacaicoa et al ., 2011; Kabir et al ., 2013), carbohydrates (e.g. sucrose; Zargar et al ., 2015; Lin et al ., 2016) and reactive oxygen species (ROS; Molassiotis et al ., 2006; Donnini et al ., 2011), explaining the diverse effects of Fe deficiency on plant development and growth (Briat et al ., 2015; Kobayashi and Nishizawa, 2012). …”

Section: Introductionmentioning

confidence: 99%

H⁺‐pyrophosphatase IbVP1 promotes efficient iron use in sweet potato [Ipomoea batatas (L.) Lam.]

Fan

Wang

et al. 2017

Plant Biotechnology Journal

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SummaryIron (Fe) deficiency is one of the most common micronutrient deficiencies limiting crop production globally, especially in arid regions because of decreased availability of iron in alkaline soils. Sweet potato [Ipomoea batatas (L.) Lam.] grows well in arid regions and is tolerant to Fe deficiency. Here, we report that the transcription of type I H+‐pyrophosphatase (H+‐PPase) gene IbVP1 in sweet potato plants was strongly induced by Fe deficiency and auxin in hydroponics, improving Fe acquisition via increased rhizosphere acidification and auxin regulation. When overexpressed, transgenic plants show higher pyrophosphate hydrolysis and plasma membrane H+‐ATPase activity compared with the wild type, leading to increased rhizosphere acidification. The IbVP1‐overexpressing plants showed better growth, including enlarged root systems, under Fe‐sufficient or Fe‐deficient conditions. Increased ferric precipitation and ferric chelate reductase activity in the roots of transgenic lines indicate improved iron uptake, which is also confirmed by increased Fe content and up‐regulation of Fe uptake genes, e.g. FRO2,IRT1 and FIT. Carbohydrate metabolism is significantly affected in the transgenic lines, showing increased sugar and starch content associated with the increased expression of AGPase and SUT1 genes and the decrease in β‐amylase gene expression. Improved antioxidant capacities were also detected in the transgenic plants, which showed reduced H2O2 accumulation associated with up‐regulated ROS‐scavenging activity. Therefore, H+‐PPase plays a key role in the response to Fe deficiency by sweet potato and effectively improves the Fe acquisition by overexpressing IbVP1 in crops cultivated in micronutrient‐deficient soils.

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“…The higher stomatal conductance might also be responsible for the same. Molassiotis et al (2006) also recorded less stomatal conductance when they exposed peach rootstocks to iron deprived solution than iron containing solution. Improvement in chlorophyll fluorescence parameters were also observed with the application of 1.0 % Fe-sulphate.…”

Section: Discussionmentioning

confidence: 96%

Physiological and biochemical adjustment of iron chlorosis affected low-chill peach cultivars supplied with different iron sources

Chakraborty

Singh

Shukla

et al. 2012

Physiol Mol Biol Plants

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A pot experiment was carried out to investigate the effect of iron supplementation on physiological and biochemical status of the low-chill peach cultivars (Saharanpur Prabhat, Shan-e-Punjab and Pratap) suffered from iron chlorosis in artificially created calcareous soil. Three most commonly used iron sources viz. Fe-sulphate (1.0 % and 0.5 %), Fe-citrate (1.0 % and 0.5 %) and FeEDTA (0.1 % and 0.2 %) were sprayed on the 4th and 5th leaves from the apex of the twig. And after 1 week of spraying, observation on various physiological and biochemical parameters in leaves were recorded. Improvement in plant physiological parameters like chlorophyll content index (CCI), photosynthetic rate (P n ), stomatal conductance (g s ) and intercellular CO 2 conc. (C i ) were recorded best with the application of 1.0 % Fe-sulphate both in treated and untreated upper leaves. The maximum recovery in biochemical parameters such as total leaf chlorophyll content, superoxide dismutase (SOD) and peroxidase (POD) activity was also noted with the application of 1.0 % Fe-sulphate. However, application of 1.0 % Fe-sulphate and 0.5 % Fesulphate had similar effect for most of the parameters under study. The ability of iron sources to induce physiological and biochemical responses in iron deficient low-chill peach plants were in the following order Fe-sulphate>Fe-citrate>FeEDTA. Differential responses in plant physiological and biochemical parameters were also exhibited by the low-chill peach cultivars with regard to supplementation of various iron sources. Among the low-chill peach cultivars, Saharanpur Prabhat responded best with the application of iron sources followed by Shan-e-Punjab and Pratap.

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Effects of 4-month Fe deficiency exposure on Fe reduction mechanism, photosynthetic gas exchange, chlorophyll fluorescence and antioxidant defense in two peach rootstocks differing in Fe deficiency tolerance

Cited by 126 publications

References 36 publications

Chlorophyll a fluorescence as a tool to monitor physiological status of plants under abiotic stress conditions

Chlorophyll a fluorescence as a tool to monitor physiological status of plants under abiotic stress conditions

H⁺‐pyrophosphatase IbVP1 promotes efficient iron use in sweet potato [Ipomoea batatas (L.) Lam.]

Physiological and biochemical adjustment of iron chlorosis affected low-chill peach cultivars supplied with different iron sources

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Effects of 4-month Fe deficiency exposure on Fe reduction mechanism, photosynthetic gas exchange, chlorophyll fluorescence and antioxidant defense in two peach rootstocks differing in Fe deficiency tolerance

Cited by 126 publications

References 36 publications

Chlorophyll a fluorescence as a tool to monitor physiological status of plants under abiotic stress conditions

Chlorophyll a fluorescence as a tool to monitor physiological status of plants under abiotic stress conditions

H+‐pyrophosphatase IbVP1 promotes efficient iron use in sweet potato [Ipomoea batatas (L.) Lam.]

Physiological and biochemical adjustment of iron chlorosis affected low-chill peach cultivars supplied with different iron sources

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H⁺‐pyrophosphatase IbVP1 promotes efficient iron use in sweet potato [Ipomoea batatas (L.) Lam.]