Effect of foliar application of Pseudomonas fluorescens on activities of phenylalanine ammonia-lyase, Chitinase and β-1,3-Glucanase and accumulation of phenolics in rice

B. Meena, R. Radhajeyalakshmi, P. Vidhyasekaran, R. Velazhahan

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Changes in activities of phenylalanine ammonia-lyase, chitinase, β-1,3-glucanase and phenolic content in rice leaves were measured at different times after treatment of leaves with Pseudomonas fluorescens strain Pf1. When rice leaves were sprayed with P. fluorescens, substantial increase in the phenylalanine ammonia-lyase activity was observed 1 day after treatment. Following increase of the first enzyme of the phenylpropanoid pathway, phenolic content of rice leaves also increased to a maximum at 4 days after P. fluorescens treatment. Chitinase activity increased in rice leaves in response to application of P. fluorescens and the maximum enzyme activity was observed 3 days after treatment. β-1,3-Glucanase activity also increased significantly from 1 day after P. fluorescens treatment and continued to increase through 7 days. A five-fold increase in glucanase activity was observed 7 days after P. fluorescens treatment.

Original languageEnglish
Pages (from-to)307-315
Number of pages9
JournalActa Phytopathologica et Entomologica Hungarica
Volume34
Issue number4
Publication statusPublished - 1999

Fingerprint

phenylalanine ammonia-lyase
Pseudomonas fluorescens
foliar application
chitinase
rice
leaves
phenylpropanoids
enzyme activity
enzymes

Keywords

  • Chitinase
  • Glucanase
  • PAL
  • Phenolics
  • Pseudomonas fluorescens

ASJC Scopus subject areas

  • Plant Science
  • Insect Science

Cite this

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title = "Effect of foliar application of Pseudomonas fluorescens on activities of phenylalanine ammonia-lyase, Chitinase and β-1,3-Glucanase and accumulation of phenolics in rice",
abstract = "Changes in activities of phenylalanine ammonia-lyase, chitinase, β-1,3-glucanase and phenolic content in rice leaves were measured at different times after treatment of leaves with Pseudomonas fluorescens strain Pf1. When rice leaves were sprayed with P. fluorescens, substantial increase in the phenylalanine ammonia-lyase activity was observed 1 day after treatment. Following increase of the first enzyme of the phenylpropanoid pathway, phenolic content of rice leaves also increased to a maximum at 4 days after P. fluorescens treatment. Chitinase activity increased in rice leaves in response to application of P. fluorescens and the maximum enzyme activity was observed 3 days after treatment. β-1,3-Glucanase activity also increased significantly from 1 day after P. fluorescens treatment and continued to increase through 7 days. A five-fold increase in glucanase activity was observed 7 days after P. fluorescens treatment.",
keywords = "Chitinase, Glucanase, PAL, Phenolics, Pseudomonas fluorescens",
author = "B. Meena and R. Radhajeyalakshmi and P. Vidhyasekaran and R. Velazhahan",
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T1 - Effect of foliar application of Pseudomonas fluorescens on activities of phenylalanine ammonia-lyase, Chitinase and β-1,3-Glucanase and accumulation of phenolics in rice

AU - Meena, B.

AU - Radhajeyalakshmi, R.

AU - Vidhyasekaran, P.

AU - Velazhahan, R.

PY - 1999

Y1 - 1999

N2 - Changes in activities of phenylalanine ammonia-lyase, chitinase, β-1,3-glucanase and phenolic content in rice leaves were measured at different times after treatment of leaves with Pseudomonas fluorescens strain Pf1. When rice leaves were sprayed with P. fluorescens, substantial increase in the phenylalanine ammonia-lyase activity was observed 1 day after treatment. Following increase of the first enzyme of the phenylpropanoid pathway, phenolic content of rice leaves also increased to a maximum at 4 days after P. fluorescens treatment. Chitinase activity increased in rice leaves in response to application of P. fluorescens and the maximum enzyme activity was observed 3 days after treatment. β-1,3-Glucanase activity also increased significantly from 1 day after P. fluorescens treatment and continued to increase through 7 days. A five-fold increase in glucanase activity was observed 7 days after P. fluorescens treatment.

AB - Changes in activities of phenylalanine ammonia-lyase, chitinase, β-1,3-glucanase and phenolic content in rice leaves were measured at different times after treatment of leaves with Pseudomonas fluorescens strain Pf1. When rice leaves were sprayed with P. fluorescens, substantial increase in the phenylalanine ammonia-lyase activity was observed 1 day after treatment. Following increase of the first enzyme of the phenylpropanoid pathway, phenolic content of rice leaves also increased to a maximum at 4 days after P. fluorescens treatment. Chitinase activity increased in rice leaves in response to application of P. fluorescens and the maximum enzyme activity was observed 3 days after treatment. β-1,3-Glucanase activity also increased significantly from 1 day after P. fluorescens treatment and continued to increase through 7 days. A five-fold increase in glucanase activity was observed 7 days after P. fluorescens treatment.

KW - Chitinase

KW - Glucanase

KW - PAL

KW - Phenolics

KW - Pseudomonas fluorescens

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