Indian Journal of Nematology

SCOPUS
  • Year: 2007
  • Volume: 37
  • Issue: 2

Phenylalanine Ammonia Lyase and Total Phenol Content in Resistant Banana to Pratylenchus coffeae

  • Author:
  • A. Nithya Devi1,, V. Ponnuswami1, P. Sundararaju2, K. Soorianathasundaram1, S. Sathiamoorthy2, S. Uma1, I. Van Den Bergh3
  • Total Page Count: 7
  • DOI:
  • Page Number: 149 to 155

1Department of Fruit Crops, Tamil Nadu Agricultural University, Coimbatore, India

2National Research Centre for Banana, Tiruchirapalli, India

3Biodiversity, France.

Abstract

The biochemical alterations in resistance banana accessions showed that relatively higher Phenylalanine Ammonia Lyase (PAL) activity than the susceptible ones indicating the inherent higher content of PAL in resistant accessions. The higher activity of this enzyme in resistant accessions viz., Karthobiumtham, M. balbisiana, Kanai Bansi, Bhimkol, Athiakol, Aittakol, Kechulepa was negatively correlated with lesion index of roots and corm. Increase in phenol content and enzyme activities were negatively related with the degree of infestation. In the present study, total phenol estimated in roots of banana genotypes showed that these compounds were higher in resistant accessions than susceptible ones.

Keywords

Banana, root lesion nematode, phenylalanine ammonia lyase activity, total phenol, resistance mechanism