Allelochemical effects on net nitrate uptake and plasma membrane H&lt;sup&gt;+&lt;/sup&gt;-ATPase activity in maize seedlings

Abenavoli, Maria Rosa; Lupini, Antonio; Oliva, Sabrina; Sorgonà, Agostino

doi:10.1007/s10535-010-0024-0

Cited by 55 publications

(24 citation statements)

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“…They effect the growth of plants by inhibiting the ions uptake, mainly due to membrane perturbation [38]. The reduced nitrate uptake in maize seedlings at higher concentration of p-coumaric, ferulic acid and trans-cinnamic acid, however lower concentration of caffeic acid enhanced nitrate uptake [39]. The present study also revealed that at dilutions of 0.75 to 1.75 [38] indicated the greater inhibition of ion uptake by phenolic acids (cinnamic acid, benzoic acid).…”

Section: Discussionsupporting

confidence: 54%

Allelochemicals as Growth Stimulators for Drought Stressed Maize

Maqbool¹,

Sadiq²

2017

AJPS

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Sorgaab, an aqueous extract of sorghum leaves was applied to probe the modulation in growth and physiological attributes of maize under drought in lab and greenhouse studies. Sorgaab soaked seeds (10 dilutions) were germinated to assess drought tolerance at germination and seedling growth stages. More concentrated Sorgaab solutions (2 mL•L −1 ) were damaging, while lower concentration in the range of 0.75 to 1.5 mL•L −1 improved the root and shoot growth of maize under drought. Applied drought stress decreased chlorophyll b greater than chlorophyll a that improved the chl a/b ratio. Application of Sorgaab also improved the internal CO 2 assimilation, which increased the net photosynthesis and A/E ratio of drought affected plants. Soluble phenolics and anthocyanins were also more increased in plant receiving Sorgaab under drought than control. Although greater concentrations of phenolic acids inhibit the uptake of ions, but its lower concentrations stimulate the uptake of K + , Ca 2+ , NO 3 , PO 4 . In conclusion, although high concentrations of Sorgaab reduced the growth of plants, it might alleviate the adverse effects of drought, if applied at the low concentration. Dilute concentrations of Sorgaab can be utilized as a natural source for improving drought resistance in maize both at germination and later growth stages.

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Section: Discussionsupporting

confidence: 54%

Allelochemicals as Growth Stimulators for Drought Stressed Maize

Maqbool¹,

Sadiq²

2017

AJPS

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“…Thus, Cucumis sativus (cucumber) and many other crops cannot be grown continuously in the same agricultural sites. Moreover, FA reduces the activities of plasma membrane H + -ATPases (Abenavoli et al 2010) and some hydrolytic enzymes (Devi and Prasad 1992), and alters the nutrient balance in plants (Kobza and Einhellig 1987). Accordingly, methods to enhance FA degradation in soil may enhance agricultural productivity under continuous cropping (Seal et al 2004).…”

Section: Introductionmentioning

confidence: 99%

Bacillus methylotrophicus isolated from the cucumber rhizosphere degrades ferulic acid in soil and affects antioxidant and rhizosphere enzyme activities

et al. 2015

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Aims Ferulic acid (FA) accumulates in soil and inhibits plant growth. We examined whether the FA-degrading bacterium Bacillus methylotrophicus degrades FA in soil. Methods B. methylotrophicus strain CSY-F1 was isolated and applied to unplanted soil and soil planted with Cucumis sativus (cucumber). We analyzed the effects of B. methylotrophicus on rhizosphere enzyme activities and antioxidant enzyme activities in cucumber and CSY-F1 exposed to FA. Results CSY-F1 degraded FA in culture medium and in soil, giving rise to 4-vinyl guaiacol, vanillin, vanillic acid, and protocatechuic acid. When cucumber seedlings were grown in soil treated with FA, the activities of some soil enzymes decreased, and the malonaldehyde content in cucumber leaves increased. The addition of CSY-F1 to FA-treated soil increased the activities of these soil enzymes, decreased the FA concentration in the soil, and elevated the activities of some antioxidant enzymes in seedlings. Moreover, the levels of superoxide radical, hydrogen peroxide, and malonaldehyde were reduced in cucumber leaves. FA treatment increased the activities of antioxidant enzymes, including superoxide dismutase, catalase, and monodehydroascorbate, in CSY-F1. Conclusion Bacillus methylotrophicus CSY-F1 has potential applications as an FA-degrading agent in soil, as it mitigates FA stress in cucumber seedlings by activating several antioxidant and soil enzymes.

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“…; Abenavoli et al . ). Coumarin‐treated plants exhibited a shift in the full induction , which is usually under feedback regulation of N concentration within the roots.…”

Section: Discussionmentioning

confidence: 99%

“…Recent results suggested that some cinnamic acid derivatives, such as trans ‐cinnamic, ferulic and p ‐coumaric acids, affected PM H + ‐ATPase activity independently of NO 3 − uptake (Abenavoli et al . ). However, the coumarin mechanism influencing the NO 3 − uptake system is not yet fully clarified, due to scarce knowledge of functional relationships among anion uptake and PM H + ‐ATPase activity at protein and transcript levels.…”

Section: Introductionmentioning

confidence: 97%

Coumarin enhances nitrate uptake in maize roots through modulation of plasma membrane H⁺‐ATPase activity

et al. 2017

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Coumarin is one of the simplest plant secondary metabolites, widely distributed in the plant kingdom, affecting root form and function, including anatomy, morphology and nutrient uptake. Although, some plant responses to coumarin have been described, comprehensive knowledge of the physiological and molecular mechanisms is lacking. Maize seedlings exposed to different coumarin concentrations, alone or in combination with 200 μm nitrate (NO ), were analysed, through a physiological and molecular approach, to elucidate action of coumarin on net NO uptake rate (NNUR). In detail, the time course of NNUR, plasma membrane (PM) H -ATPase activity, proton pumping and related gene expression (ZmNPF6.3, ZmNRT2.1, ZmNAR2.1, ZmHA3 and ZmHA4) were evaluated. Coumarin alone did not affect nitrate uptake, PM H -ATPase activity or transcript levels of ZmNRT2.1 and ZmHA3. In contrast, coumarin alone increased ZmNPF6.3, ZmNAR2.1 and ZmHA4 expression in response to abiotic stress. When coumarin and NO were concurrently added to the nutrient solution, a significant increase in the NNUR, PM H -ATPase activity, together with ZmNAR2.1:ZmNRT2.1 and ZmHA4 expression was observed, suggesting that coumarin affected the inducible component of the high affinity transport system (iHATS), and this effect appeared to be mediated by nitrate. Moreover, results with vanadate, an inhibitor of the PM H -ATPase, suggested that this enzyme could be the main target of coumarin. Surprisingly, coumarin did not affect PM H -ATPase activity by direct contact with plasma membrane vesicles isolated from maize roots, indicating its possible elicitor role in gene transcription.

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Allelochemical effects on net nitrate uptake and plasma membrane H<sup>+</sup>-ATPase activity in maize seedlings

Cited by 55 publications

References 28 publications

Allelochemicals as Growth Stimulators for Drought Stressed Maize

Allelochemicals as Growth Stimulators for Drought Stressed Maize

Bacillus methylotrophicus isolated from the cucumber rhizosphere degrades ferulic acid in soil and affects antioxidant and rhizosphere enzyme activities

Coumarin enhances nitrate uptake in maize roots through modulation of plasma membrane H⁺‐ATPase activity

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Allelochemical effects on net nitrate uptake and plasma membrane H<sup>+</sup>-ATPase activity in maize seedlings

Cited by 55 publications

References 28 publications

Allelochemicals as Growth Stimulators for Drought Stressed Maize

Allelochemicals as Growth Stimulators for Drought Stressed Maize

Bacillus methylotrophicus isolated from the cucumber rhizosphere degrades ferulic acid in soil and affects antioxidant and rhizosphere enzyme activities

Coumarin enhances nitrate uptake in maize roots through modulation of plasma membrane H+‐ATPase activity

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Coumarin enhances nitrate uptake in maize roots through modulation of plasma membrane H⁺‐ATPase activity