Nematode-citrus plant interactions: host preference, damage rate and molecular characterization of Citrus root nematode Tylenchulus semipenetrans

Bozbuga R., Yildiz S., Yuksel E., Özer G., Dababat A. A., Imren M.

PLANT BIOLOGY, cilt.25, sa.6, ss.871-879, 2023 (SCI-Expanded) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 25 Sayı: 6
  • Basım Tarihi: 2023
  • Doi Numarası: 10.1111/plb.13566
  • Dergi Adı: PLANT BIOLOGY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aquatic Science & Fisheries Abstracts (ASFA), BIOSIS, CAB Abstracts, Geobase, MEDLINE, Veterinary Science Database, DIALNET
  • Sayfa Sayıları: ss.871-879
  • Anahtar Kelimeler: Citrus nematode, host preference, ITS sequence, molecular characterization, INTERNAL TRANSCRIBED SPACER, SEQUENCES, ORCHARDS, SOIL, DNA, IDENTIFICATION, BIODIVERSITY, POPULATIONS, RESISTANCE, PHYLOGENY
  • Eskişehir Osmangazi Üniversitesi Adresli: Evet

Özet

center dot Citrus plants are host to several plant parasitic nematodes (PPNs), which are microscopic organisms. Among PPNs, the citrus root nematode, T. semipenetrans (Cobb 1913) (Tylenchida: Tylenchulidae), causes significant damage to citrus plantations worldwide. Understanding citrus nematode populations, precise identification, host preference among citrus species, and damage threshold are crucial to control T. semipenetrans. The minutiae of citrus plant-nematode interactions, nematode density and molecular nematode identification are not well understood. In this study, nematode species and density in citrus orchards, host specialization, molecular and morphological characteristics of nematodes were assessed. center dot Molecular and morphological methods, host- nematode interactions, host (citrus species) preference, damage economic threshold (ET), and economic injury level (EIL) were determined using laboratory methods and field sampling. Citrus plantations in different provinces in the Mediterranean region of Turkey were investigated. center dot Nematode species were identified molecularly and morphologically. ITS sequences revealed that samples were infected by citrus root nematode T. semipenetrans. The lowest nematode density was in C. reticulata in Mersin (53 2nd stage juveniles (J2s) 100 g(-1) soil), while the highest density was from Hatay in C. sinensis (12173 J2s 100 g(-1) soil). Highest citrus nematode population density was on roots of C. reticulata, followed by C. sinensis, C. limon, and C. paradisi. center dot The citrus nematode is more common than was thought and population fluctuations change according to specific citrus species. Environmental conditions, host and ecological factors, such as temperature, soil pH, and soil nutrients, might influence nematode populations in citrus orchards. Investigating nematode density in diverse soil ecologies and the responses of different resistant/tolerant citrus species and cultivars to nematode populations is essential in future studies.