Differential interactions of a Colletotrichum gloeosporioides isolate with green and red pepper fruits

Ki Deok Kim, B. J. Oh, J. Yang

Research output: Contribution to journalArticle

39 Citations (Scopus)

Abstract

Differential interactions of Colletotrichum gloeosporioides isolate KG13 with green and red pepper fruits (Capsicum annuum were found when it was inoculated on unwounded and wounded fruits. The isolate produced the typically necrotic, sunken anthracnose symptom on unwounded and wounded green fruits, and wounded red ones, but not on unwounded red ones. Appressorial formation of the fungus on the surfaces of compatible green fruits was higher than on incompatible red ones up to 12 h after inoculation. More and longer infection pegs from appressoria were produced on green than on red fruits. When cuticular wax layers of green and red fruits were removed by dipping in chloroform, red ones only produced larger lesions and more conidia than water-dipped controls did. However, differences in lesion diameter and conidial production were not observed between green and red fruits wounded by pin-pricking. In addition, concentrations of wax extracted from the surface of green and red fruits affected conidial germination and appressorial formation of the fungus. These findings suggest that the isolate KG13 of C. gloeosporioides may react differentially to green and red pepper fruits, probably to the physical and chemical differences in cuticular layers of the fruits.

Original languageEnglish
Pages (from-to)97-106
Number of pages10
JournalPhytoparasitica
Volume27
Issue number2
Publication statusPublished - 1999 Jan 1

Fingerprint

peppers
Glomerella cingulata
sweet peppers
fruits
lesions (plant)
fungi
appressoria
epicuticular wax
anthracnose
pins
dipping
Capsicum annuum
waxes
chloroform
signs and symptoms (plants)
conidia
germination

Keywords

  • Anthracnose
  • Capsicum annuum
  • Colletotrichum gloeosporioides
  • Fungal infection
  • Glomerella cingulata
  • Wax

ASJC Scopus subject areas

  • Plant Science

Cite this

Differential interactions of a Colletotrichum gloeosporioides isolate with green and red pepper fruits. / Kim, Ki Deok; Oh, B. J.; Yang, J.

In: Phytoparasitica, Vol. 27, No. 2, 01.01.1999, p. 97-106.

Research output: Contribution to journalArticle

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