The Effect of Mycorrhiza Growth and Expression of Some Genes in Barley

Abo-Doma, A.; Edrees, S.; Abdel-Aziz, S. H.

doi:10.21608/ejgc.2011.10794

Cited by 16 publications

(9 citation statements)

References 20 publications

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“…and Lactuca sativa L., G. mosseae and G. intraradices did not induce the expression of gmp5cs and lsp5cs gene, and these P5CS gene expressions were lower in mycorrhizal than in non-mycorrhizal plants under drought stress (Porcel et al 2004). In barley (Hordeum vulgare L.), AMF inoculation increased the gene expression of HvP5CS (Abo-Doma et al 2011). Our study revealed that flooding stress induced the expression of the PpP5CS1 gene, irrespective of AMF-and non-AMF-inoculated peach (Figure 4), indicating that the accumulation of proline in flooded peach was related to the up-regulation of the PpP5CS1 gene.…”

Section: Resultsmentioning

confidence: 96%

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Mycorrhizal fungi enhance flooding tolerance of peach through inducing proline accumulation and improving root architecture

Zheng¹,

Liang²,

Chu³

et al. 2020

Plant Soil Environ.

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This study aimed to evaluate the effect of an arbuscular mycorrhizal fungus (AMF) Glomus mosseae on plant growth, root architecture, and proline metabolism in roots of peach (Prunes persica L.) under non-flooding and flooding conditions. The 12-day flooding dramatically inhibited root colonisation of G. mosseae, but induced a large number of extraradical mycelia. Although the flooding treatment also relatively inhibited growth and root architecture of peach, the mycorrhizal fungal inoculation dramatically increased shoot and root biomass, plant height, stem diameter, number of 1st- and 2nd-order lateral roots, root total length (mainly 0–1 cm and > 3 cm long), root surface area, and root volume under flooding. The study also revealed distinctly higher proline accumulation in the roots of mycorrhizal plants than non-mycorrhizal plants under both non-flooding and flooding conditions, accompanied by higher Δ1-pyrroline-5-carboxylate synthase (P5CS) activity and lower δ-ornithine transaminase and proline dehydrogenase activities. In addition, the PpP5CS1 gene expression was up-regulated by flooding and mycorrhization. This study concluded that mycorrhizal fungi enhanced flooding tolerance of peach through inducing proline accumulation and improving root architecture.

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Section: Resultsmentioning

confidence: 96%

“…Δ 1 -pyrroline-5-carboxylate synthetase (P5CS) is a key enzyme in the glutamate synthesis pathway of proline (Chandrakar and Keshavkant 2018). Earlier studies have confirmed that host P5CS gene expression could respond to mycorrhizal fungi under abiotic stress conditions (Porcel et al 2004, Abo-Doma et al 2011. In Glycine max (L.) Merrill.…”

Section: Resultsmentioning

confidence: 99%

Mycorrhizal fungi enhance flooding tolerance of peach through inducing proline accumulation and improving root architecture

Zheng¹,

Liang²,

Chu³

et al. 2020

Plant Soil Environ.

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“…Many studies reported higher proline content in M plants compared to NM plants, while others have reported lower proline content in M plants (Table 2). Higher proline content in M plants has been attributed to – (i) increase in the expression of gene encoding P5CS involved in proline biosynthesis; (ii) higher activity of the enzyme P5CS; (iii) higher activity of the enzyme, glutamate dehydrogenase, that is responsible for synthesizing glutamate, the precursor of proline; and (iv) inactivation of proline dehydrogenase, an enzyme that catalyze the degradation of proline (Abo-Doma et al, 2016). Besides its role as an osmoprotectant, proline is also considered as a stress marker.…”

Section: Mechanisms Of Salt Tolerance In M Plantsmentioning

confidence: 99%

Mitigation of Salinity Stress in Plants by Arbuscular Mycorrhizal Symbiosis: Current Understanding and New Challenges

et al. 2019

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Modern agriculture is facing twin challenge of ensuring global food security and executing it in a sustainable manner. However, the rapidly expanding salinity stress in cultivable areas poses a major peril to crop yield. Among various biotechnological techniques being used to reduce the negative effects of salinity, the use of arbuscular mycorrhizal fungi (AMF) is considered to be an efficient approach for bio-amelioration of salinity stress. AMF deploy an array of biochemical and physiological mechanisms that act in a concerted manner to provide more salinity tolerance to the host plant. Some of the well-known mechanisms include improved nutrient uptake and maintenance of ionic homeostasis, superior water use efficiency and osmoprotection, enhanced photosynthetic efficiency, preservation of cell ultrastructure, and reinforced antioxidant metabolism. Molecular studies in past one decade have further elucidated the processes involved in amelioration of salt stress in mycorrhizal plants. The participating AMF induce expression of genes involved in Na + extrusion to the soil solution, K + acquisition (by phloem loading and unloading) and release into the xylem, therefore maintaining favorable Na + :K + ratio. Colonization by AMF differentially affects expression of plasma membrane and tonoplast aquaporins (PIPs and TIPs), which consequently improves water status of the plant. Formation of AM (arbuscular mycorrhiza) surges the capacity of plant to mend photosystem-II (PSII) and boosts quantum efficiency of PSII under salt stress conditions by mounting the transcript levels of chloroplast genes encoding antenna proteins involved in transfer of excitation energy. Furthermore, AM-induced interplay of phytohormones, including strigolactones, abscisic acid, gibberellic acid, salicylic acid, and jasmonic acid have also been associated with the salt tolerance mechanism. This review comprehensively covers major research advances on physiological, biochemical, and molecular mechanisms implicated in AM-induced salt stress tolerance in plants. The review identifies the challenges involved in the application of AM in alleviation of salt stress in plants in order to improve crop productivity.

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“…On the other hand, salinity induced a remarkable reduction in ProDH, suggesting that accumulation of proline was the result of concomitant inactivation of ProDH, thus negatively correlated with sodium content in leaves as well as in roots ( Garg and Baher, 2013 ). Transcriptome analysis using real-time reverse transcriptase by Abo-Doma et al (2011) indicated that mycorrhiza treatment resulted in an increase in the gene expression of P5CS on the transcription level. Hence, there is a profound gap to be abridged and coherent results regarding expression patterns at a molecular level that can properly be utilized to link and demarcate a lineage of genes specific for proline accumulation, osmotic stress and delinking mycorrhizal and non-mycorrhizal counterparts with proline accumulation.…”

Section: Molecular Changes In P5cs In Amf Inoculatmentioning

confidence: 99%

Proline Accumulation Influenced by Osmotic Stress in Arbuscular Mycorrhizal Symbiotic Plants

2018

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Salinity and drought are the major osmotic stress limitations that affect plant growth and crop yield in agriculture worldwide. The alternative response mediated by plants in response to salinity and drought are principally proline accumulation which regulates stress combat strategies owing to sustainable production in the realm of agricultural production even under severe stress. Symbiotic and soil associated arbuscular mycorrhizal fungi (AMF) are regarded as efficient biofertilizers in several crops under these stresses. Summarily AMF is renowned for effective scavengers of free radicals in soil thereby increasing soil parameters optimal for plant growth. AMF contribute to augment host plant tolerance to stress specifically salinity and drought. Mycorrhizal colonization positively regulates root uptake of available nutrients and enhance growth even when bestowed by water constraints which has contributory roles due to proline accumulation providing several intriguing researches on AMF symbiosis pertaining to plant productivity and yield. Mycorrhizal plants and their non-mycorrhizal counterparts show varied expression pattern regarding proline amass. Hence, the precise role of proline with respect to stress tolerance and equivocal mechanisms involved in evasion of osmotic stress has not been extensively reviewed earlier. Further molecular forecasting in this arena is still an underexploited research field. This review comprehensively addresses the observable facts pertaining to proline accumulation upon AMF association and adherence relevant to stress tolerance and host plant efficiency and efficacy.

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The Effect of Mycorrhiza Growth and Expression of Some Genes in Barley

Cited by 16 publications

References 20 publications

Mycorrhizal fungi enhance flooding tolerance of peach through inducing proline accumulation and improving root architecture

Mycorrhizal fungi enhance flooding tolerance of peach through inducing proline accumulation and improving root architecture

Mitigation of Salinity Stress in Plants by Arbuscular Mycorrhizal Symbiosis: Current Understanding and New Challenges

Proline Accumulation Influenced by Osmotic Stress in Arbuscular Mycorrhizal Symbiotic Plants

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