Cereal Research Communications

, Volume 45, Issue 2, pp 214–224 | Cite as

Tyrosine-priming Modulates Phenylpropanoid Pathway in Maize Grown under Different pH Regimes

  • S. Mahmood
  • I. Hussain
  • A. Ashraf
  • A. Parveen
  • S. JavedEmail author
  • M. Iqbal
  • B. Afzal
Open Access


Alkaline and acidic pH of soil limit crop yield. Products of phenylpropanoid pathway play a key part in plant abiotic stress tolerance. It was aimed to assess efficacy of tyrosinepriming for activation of enzyme involved in phenolic accumulation induction of pH tolerance in maize seedlings. Seeds of two maize cultivars, namely Sadaf (pH tolerant) and S-2002 (pH sensitive), were grown under three pH levels (3, 7 and 11). Eight and twelve days old seedlings were harvested and parted into roots and shoots for the assessment of growth, enzymatic and non-enzymatic antioxidants. PAL activity was directly correlated with total soluble phenolics, flavonoids, growth and seedling vigour. Lower accumulation of phenolics and PAL activity in the pH sensitive (S-2002) cultivar indicated greater oxidative damage caused by pH extremes. Priming improved antioxidative potential by enhancing PAL activity and phenolics accumulation and hence increased growth in maize seedlings.


maize phenylpropanoid enzymes phenolics pH 



Phenylalanine ammonia lyase


Total soluble phenolics






Leaf area

Supplementary material

42976_2017_4502214_MOESM1_ESM.pdf (590 kb)
Tyrosine-priming Modulates Phenylpropanoid Pathway in Maize Grown under Different pH Regimes


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© Akadémiai Kiadó, Budapest 2017

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Authors and Affiliations

  • S. Mahmood
    • 1
  • I. Hussain
    • 1
    • 3
  • A. Ashraf
    • 1
  • A. Parveen
    • 1
  • S. Javed
    • 2
    Email author
  • M. Iqbal
    • 1
  • B. Afzal
    • 1
  1. 1.Department of BotanyGovernment College UniversityFaisalabadPakistan
  2. 2.Department of Applied Chemistry and BiochemistryGovernment College UniversityFaisalabadPakistan
  3. 3.Department of Environmental Life SciencesGraduate School of Life Sciences, Tohoku UniversitySendaiJapan

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