Relationships between phenolics-conjugated polyamines and sensitivity of sugarcane to smut (Ustilago scitaminea)

Mechanisms of Resistance to Pests and Pathogens in Sugarcane and Related Crop Species

“…In a susceptible sugarcane cultivar infected with smut, free polyamines dropped below detectable limits in the culms while PPCs increased (Legaz et al 1998). Lateral buds of a resistant cultivar accumulated free Put, while buds of the susceptible cultivar accumulated PPCs (Pinon et al 1999).…”

Role of polyamine metabolism in plant pathogen interactions

“…In addition, increased ADC activity in the susceptible cultivar was detected during prepenetration, and exogenous PA treatment reduced the appressorium formation in the same oat cultivars [14]. In most cases induction of PA synthesis has been reported during biotroph pathogen infection, however, in the highly susceptible sugarcane infected with Ustilago scitaminea reduced free PA content has been reported [15].…”

Cadaverine

“…Legaz et al 168 have recorded higher SH-Cad in leaf, root and stem of infected plants than non-infected and suggested to be indicator of Ustilago scitaminea causing smut of sugarcane. Cad level did not exhibit any correlation with smut (Ustilago scitaminea) disease development in sugarcane.…”

“…131 The Cad and other PA's present in sugarcane juices involved in binding the phenols, having lower water solubility, thus implicated in development of the color of sugary products, tend to decide the quality. 168 It is worth to explore application of the Cad for removing the phenols and/or any such substance from food products for improving food quality. Further, it also indicates that the genetic manipulation of LDC gene, could be used in developing transgenics and molecular farming of alkaloids and/ or Cad.…”