Molybdenum-induced effects on photosynthetic efficacy of winter wheat (Triticum aestivum L.) under different nitrogen sources are associated with nitrogen assimilation

Imran, Muhammad; Hu, Chengxiao; Hussain, Saddam; Rana, Muhammad Shoaib; Riaz, Muhammad; Afzal, Javaria; Aziz, Omar; Elyamine, Ali Mohamed; Ismael, Marwa A.; Sun, Xu

doi:10.1016/j.plaphy.2019.05.024

Cited by 42 publications

(37 citation statements)

References 35 publications

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“…3). Other researchers have also reported similar observations that nutritional imbalance results in damaged chloroplasts (Shao et al 2016;Imran et al 2019a) and thin leaf cuticle (Meng et al 2014). Surprisingly, these improvements in the chloroplasts under Mo supply correspond with the increased uptake of P and Mo since recent reports have shown that inadequate nutrition results in disintegrated and irregular chloroplasts configurations (Liu et al 2018).…”

Section: Discussionmentioning

confidence: 70%

“…Microbial biomass P (SMP) was analyzed by fumigation with CHCl 3 for 24 h, as designated by Brookes et al (1984) and Sakurai et al (2008). The Mo contents in soil and plant samples were determined respectively according to the methods of Wen et al (2018) and Imran et al (2019a), Imran et al (2019b), and Ismael et al (2018) by JP-2 oscilloscope polarography.…”

Section: Soil and Plant Analysismentioning

confidence: 99%

“…Fresh leaves were randomly cut from different plants in both treatments. Little pieces of leaves (about 1 mm 2 ) rinsed with distilled H 2 O were stabled at 4°C (6 h) in 0.2 M sodium phosphate buffer (pH 6.8) with 4% glutaraldehyde and treated further according to procedure of (Imran et al 2019a). The ultrathin sections were stained with uranyl acetate and lead citrate and scanned through Hitachi H-7650 Transmission Electron Microscope, Hitachi H-7650 (Hitachi, Ltd.).…”

Section: Transmission Electron Microscopy Analysismentioning

confidence: 99%

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Mo-Inefficient Wheat Response Toward Molybdenum Supply in Terms of Soil Phosphorus Availability

Rana

Sun

Imran

et al. 2020

J Soil Sci Plant Nutr

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Phosphorus (P) deficiency is a major constraint to crop growth due to strong soil P fixation. The effects of molybdenum (Mo) on leaf anatomy and dynamics of rhizosphere P in Mo-inefficient crops have still not been investigated. A field study was conducted to investigate the effects of long-term fertilization on dynamics of rhizosphere P transformations and leaf anatomy in Moinefficient wheat consisting of Mo (+Mo) and without Mo applied (−Mo) treatments. The results revealed that Mo supply increased plant biomass, grain yield, uptake of P and Mo by 34.9%, 14.8%, 98.1% and 654.1% respectively and preserved the leaf cuticle, stomata, chloroplast, and mesophyll tissue cell configuration. Molybdenum application significantly increased the concentration of radially available P fractions [NaHCO 3-Pi (115.5 to 129.8 mg kg −1 and 67.4 to 80.7 mg kg −1) and H 2 O-Pi (14.4-21.9 mg kg −1 and 4.63-6.40 mg kg −1)] in rhizosphere and non-rhizosphere soils, respectively. The acid phosphatase (ACP) activity (19.5 μmol day −1 g −1) was highest during March as compared to alkaline (ALP) and phytase (PHY) enzymes in the rhizosphere soil of +Mo treatment. The highest expression of gene lppC (6.11) was observed in rhizosphere soil as compared to non-rhizosphere soil which indicated that higher gene expressions induced the higher P enzymatic activities. Our findings suggest that Mo fertilizer application increases P availability through induced alteration in dynamics of rhizosphere soil P fractions, higher P and Mo assimilation and phosphatases enzymes activities along with preserving the leaf anatomy and ultrastructure of Mo-inefficient wheat.

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Section: Discussionmentioning

confidence: 70%

Section: Soil and Plant Analysismentioning

confidence: 99%

Section: Transmission Electron Microscopy Analysismentioning

confidence: 99%

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Mo-Inefficient Wheat Response Toward Molybdenum Supply in Terms of Soil Phosphorus Availability

Rana

Sun

Imran

et al. 2020

J Soil Sci Plant Nutr

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“…Seeds were allowed to germinate at 25°C in deionized water for 5 days. The environmental conditions in the controlled growth chamber were maintained according to our previous study (Imran et al 2019a). Uniform-sized wheat seedlings were transplanted to plastic containers.…”

Section: Plant Materials and Growth Conditionsmentioning

confidence: 99%

Molybdenum Application Regulates Oxidative Stress Tolerance in Winter Wheat Under Different Nitrogen Sources

Imran

Sun

Hussain

et al. 2020

J Soil Sci Plant Nutr

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Molybdenum (Mo), an essential microelement, may enhance the oxidative stress tolerance in plants. However, the efficacy of Mo might be variable with different forms of nitrogen (N) fertilizer. The present study was conducted to investigate the role of Mo application in regulating oxidative stress tolerance in winter wheat under different N sources. A hydroponic study was carried out comprising of two winter wheat cultivars '97003' and '97014' as Mo efficient and Mo inefficient, respectively, under two Mo levels (0 and 1 μM) and three different N sources (NO 3 , NH 4 NO 3 , or NH 4 +). Winter wheat plants supplied with different N sources accumulated superoxide anions (O 2 −), and malonaldehyde (MDA) contents in the order of NH 4 + > NO 3 > NH 4 NO 3 , suggesting that sole application of either N sources, especially sole NH 4 + source, may induce oxidative stress in winter wheat. However, Mo application decreased the MDA contents by 20.02%, 15.11%, and 25.89% in Mo-efficient cultivar and 30.75%, 23.79%, and 37.76% in Mo-inefficient cultivar under NO 3 , NH 4 NO 3 , and NH 4 + sources, respectively, while increased antioxidant enzyme activities and carotenoids and abscisic acid (ABA) contents up-regulated the expressions of TaAO and TaAba3 genes. Mo application regulated oxidative stress tolerance in winter wheat under different N sources through enhancing ABA production and ROS-scavenging enzymes. Mo-efficient '97003' winter wheat cultivar possesses a wider range of adaptability to withstand Mo-deficient conditions than Mo-inefficient '97014' cultivar.

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“…Molybdenum (Mo) is very important and an essential micronutri ent for plants, animals and bacteria [1][2][3]. A lot of soils in the world suffer due to the defi ciency of microelements such as Mo [4,5].…”

Section: Introductionmentioning

confidence: 99%

Molybdenum potential vital role in plants metabolism for optimizing the growth and development

Rana¹,

Bhantana²,

Imran³

et al. 2020

Ann Environ Sci Toxicol

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Molybdenum-induced effects on photosynthetic efficacy of winter wheat (Triticum aestivum L.) under different nitrogen sources are associated with nitrogen assimilation

Cited by 42 publications

References 35 publications

Mo-Inefficient Wheat Response Toward Molybdenum Supply in Terms of Soil Phosphorus Availability

Mo-Inefficient Wheat Response Toward Molybdenum Supply in Terms of Soil Phosphorus Availability

Molybdenum Application Regulates Oxidative Stress Tolerance in Winter Wheat Under Different Nitrogen Sources

Molybdenum potential vital role in plants metabolism for optimizing the growth and development

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