Effect of different concentrations of foliar iron fertilizer on chlorophyll fluorescence characteristics of iron-deficient rice seedlings under saline sodic conditions

Gao, Dapeng; Ran, Cheng; Zhang, Yunhe; Wang, Xiaolei; Lu, Sifei; Geng, Yanqiu; Guo, Lei; Shao, Xiwen

doi:10.1016/j.plaphy.2022.05.021

Cited by 34 publications

(15 citation statements)

References 37 publications

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“…The kinetics of photoinduced 820 nm reflection (MR/MR 0 ) can be utilized to identify the buildup of P700 in the PSI reaction center [ 30 ], as well as the subsequent rereduction of PC + and P700 + by electrons that were initially captured by P680 [ 53 ]. This study demonstrated that saline-sodic stress significantly impacted the oxidation–reduction rate of PC and P700, whereas the addition of external zinc enhanced the oxidation–reduction rate of PC and P700 (Fig.…”

Section: Discussionmentioning

confidence: 99%

“…To ensure optimal nutrient availability, the solution was refreshed every three days. In this study, a simulated saline-sodic stress was created using a NaCl: Na 2 SO 4: Na 2 CO 3 : NaHCO 3 ratio of 1:9:1:9, with a saline-sodic concentration of 50 mmol L −1 , pH of 8.5, and conductivity of 3673 µs cm −1 [ 30 ]. ZnSO 4 ·7H 2 O serves as the primary source of zinc, with an optimal concentration of 2 μmol L −1 .…”

Section: Methodsmentioning

confidence: 99%

“…However, there is a scarcity of research on the impact of zinc on photosynthetic fluorescence and carbohydrate metabolism in saline-sodic rice. Therefore, this study utilized a NaCl: Na 2 SO 4 : Na 2 CO 3 : NaHCO 3 of 1:9:1:9 to mimic saline-sodic stress conditions [ 30 ]. By employing the JIP test in conjunction with chlorophyll fluorescence and the 820 nm technique, the study investigated the effects of zinc supplementation on photosynthetic electron transport chain and non-structural carbohydrate metabolism in rice leaves and roots.…”

Section: Introductionmentioning

confidence: 99%

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Zinc regulation of chlorophyll fluorescence and carbohydrate metabolism in saline-sodic stressed rice seedlings

Dang,

Mu,

Tian

et al. 2024

BMC Plant Biol

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Saline-sodic stress can limit the absorption of available zinc in rice, subsequently impacting the normal photosynthesis and carbohydrate metabolism of rice plants. To investigate the impact of exogenous zinc application on photosynthesis and carbohydrate metabolism in rice grown in saline-sodic soil, this study simulated saline-sodic stress conditions using two rice varieties, 'Changbai 9' and 'Tonghe 899', as experimental materials. Rice seedlings at 4 weeks of age underwent various treatments including control (CT), 2 μmol·L−1 zinc treatment alone (Z), 50 mmol·L−1 saline-sodic treatment (S), and 50 mmol·L−1 saline-sodic treatment with 2 μmol·L−1 zinc (Z + S). We utilized JIP-test to analyze the variations in excitation fluorescence and MR820 signal in rice leaves resulting from zinc supplementation under saline-sodic stress, and examined the impact of zinc supplementation on carbohydrate metabolism in both rice leaves and roots under saline-sodic stress. Research shows that zinc increased the chloroplast pigment content, specific energy flow, quantum yield, and performance of active PSII reaction centers (PIABS), as well as the oxidation (VOX) and reduction rate (Vred) of PSI in rice leaves under saline-sodic stress. Additionally, it decreased the relative variable fluorescence (WK and VJ) and quantum energy dissipation yield (φDO) of the rice. Meanwhile, zinc application can reduce the content of soluble sugars and starch in rice leaves and increasing the starch content in the roots. Therefore, the addition of zinc promotes electron and energy transfer in the rice photosystem under saline-sodic stress. It enhances rice carbohydrate metabolism, improving the rice plants’ ability to withstand saline-sodic stress and ultimately promoting rice growth and development.

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Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Zinc regulation of chlorophyll fluorescence and carbohydrate metabolism in saline-sodic stressed rice seedlings

Dang,

Mu,

Tian

et al. 2024

BMC Plant Biol

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“…Iron (Fe) is a micronutrient that performs various functions like photosynthesis, respiration, chlorophyll, and many of the enzymatic reactions in plants (Gao et al, 2022 ). The unavailable form of iron in nature present under aerobic environment predominately is Fe +3 and is more probable form of insoluble oxyhydroxides and hydroxides complex.…”

Section: Types Of Biofertilizers and Their Role In Crop Production An...mentioning

confidence: 99%

Overview of biofertilizers in crop production and stress management for sustainable agriculture

Chaudhary

Singh²,

Chaudhary³

et al. 2022

Front. Plant Sci.

100

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With the increase in world population, the demography of humans is estimated to be exceeded and it has become a major challenge to provide an adequate amount of food, feed, and agricultural products majorly in developing countries. The use of chemical fertilizers causes the plant to grow efficiently and rapidly to meet the food demand. The drawbacks of using a higher quantity of chemical or synthetic fertilizers are environmental pollution, persistent changes in the soil ecology, physiochemical composition, decreasing agricultural productivity and cause several health hazards. Climatic factors are responsible for enhancing abiotic stress on crops, resulting in reduced agricultural productivity. There are various types of abiotic and biotic stress factors like soil salinity, drought, wind, improper temperature, heavy metals, waterlogging, and different weeds and phytopathogens like bacteria, viruses, fungi, and nematodes which attack plants, reducing crop productivity and quality. There is a shift toward the use of biofertilizers due to all these facts, which provide nutrition through natural processes like zinc, potassium and phosphorus solubilization, nitrogen fixation, production of hormones, siderophore, various hydrolytic enzymes and protect the plant from different plant pathogens and stress conditions. They provide the nutrition in adequate amount that is sufficient for healthy crop development to fulfill the demand of the increasing population worldwide, eco-friendly and economically convenient. This review will focus on biofertilizers and their mechanisms of action, role in crop productivity and in biotic/abiotic stress tolerance.

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“…Iron can act as electron carriers in the enzyme systems, bringing about oxidation-reduction reactions in rice (Jones and Benton, 2012;Meghana et al,2019). Iron deficiency is major concern and critical to yield realization of aerobic rice ecosystem (Soumya et al 2017); and rice grown in problem soils (Gao et al,2022). The presence of micronutrient deficiency renders it impossible to gain maximum benefit from NPK fertilizers application in aerobic rice production.…”

Section: Introductionmentioning

confidence: 99%

Physiological response and productivity of aerobic rice (Oryza sativa L.) to iron fertilization in typic Ustifluvents soil

Shalini

Manivannan

Sriramachandrasekharan

et al. 2023

JANS

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Aerobic rice is projected as a sustainable rice production technology for the immediate future to address water scarcity and environmental safety. Micronutrient deficiency, particularly iron is one of the main factors responsible for low productivity in aerobic rice. With this perspective, a field experiment was conducted at farmer’s field in 2022 at Kuttalam, Mayladuthurai district, Tamilnadu, in sandy clay loam (Padugai Series – Typic Ustifluvents) to predict the response of aerobic rice (Oryza sativa) to iron nutrition. The experiment was laid out in randomised block design with eleven treatments (Recommended dose of fertilizers (RDF) NPK only (control)(T1), (RDF) + FeSO4 @ 25 kg ha-1 (SA) (T2), RDF + FeSO4 37.5 kg ha-1 (SA)(T3),RDF+ FeSO4 @ 50 kg ha-1 (SA)(T4), RDF+ FeSO4 @ 25 kg ha-1 (SA) + FeSO4 @ 1% (FS)(T5), RDF+ FeSO4 37.5 kg ha-1 (SA) + FeSO4 @ 1% (FS)(T6) , RDF+ FeSO4 @ 50 kg ha-1 (SA) + FeSO4 @ 1% (FS)(T7), RDF+ FeSO4 @ 25 kg ha-1(SA) + Fe-EDTA @ 0.5% (FS)(T8), RDF+ FeSO4 37.5 kg ha-1 (SA) + Fe-EDTA @ 0.5% (FS)(T9), RDF+ FeSO4 @ 50 kg ha-1 (SA) + Fe-EDTA @ 0.5% (FS) (T10) and RDF + Seed priming 0.05M Fe-EDTA(T11)) and replicated thrice. The results revealed that application of FeSO4 @ 50 kg ha-1 (SA) + Fe-EDTA @ 0.5% (FS) with RDF recorded the highest growth and yield parameters and the highest grain (3438 kg ha-1) and straw yield (5078 kg ha-1) compared to other treatments including control. This study concluded that iron fertilization through the soil and foliar application could enhance aerobic rice productivity.

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Effect of different concentrations of foliar iron fertilizer on chlorophyll fluorescence characteristics of iron-deficient rice seedlings under saline sodic conditions

Cited by 34 publications

References 37 publications

Zinc regulation of chlorophyll fluorescence and carbohydrate metabolism in saline-sodic stressed rice seedlings

Zinc regulation of chlorophyll fluorescence and carbohydrate metabolism in saline-sodic stressed rice seedlings

Overview of biofertilizers in crop production and stress management for sustainable agriculture

Physiological response and productivity of aerobic rice (Oryza sativa L.) to iron fertilization in typic Ustifluvents soil

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