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- Title
Epiphytic growth of <italic>Xanthomonas arboricola</italic> and <italic>Xanthomonas citri</italic> on non‐host plants.
- Authors
Zarei, S.; Taghavi, S. M.; Hamzehzarghani, H.; Osdaghi, E.; Lamichhane, J. R.
- Abstract
The population dynamics of <italic>Xanthomonas arboricola</italic> pv. <italic>pruni</italic> (Xap) and <italic>X. citri</italic> subsp. <italic>citri</italic> (Xcc) was assessed on over three dozen plant species/genotypes under field and greenhouse conditions. Both Xap and Xcc multiplied on red nightshade, black nightshade, bindweed, <italic>Chenopodium</italic>, common bean and wheat up to 20 days post‐inoculation (dpi) under greenhouse conditions. A high bacterial growth rate was observed on all (alfalfa, bindweed, <italic>Chenopodium</italic>, field mustard, millet and prickly lettuce) but one (liquorice) plant species tested under field conditions. Xap successfully proliferated on both lemon and sweet lemon up to 140 dpi, attaining a population density even higher than that of Xcc. The latter showed an increased growth rate on GxN, GF677, Ghisella 6 and Mariana 2624 rootstocks up to 140 dpi. While Xap and Xcc did not grow on pomegranate and common fig, they had a steady population growth on apple and pear plants up to 140 dpi, although the final population sizes were smaller than those observed on lemon and sweet lemon plants. The results suggest that a large number of non‐host plant species could support epiphytic populations of Xap or Xcc, which may have implications for plant disease epidemiology.
- Subjects
XANTHOMONAS diseases; XANTHOMONAS campestris; EPIDEMIOLOGY; POPULATION dynamics; PLANT diseases
- Publication
Plant Pathology, 2018, Vol 67, Issue 3, p660
- ISSN
0032-0862
- Publication type
Article
- DOI
10.1111/ppa.12769