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Open AccessArticle

A Survey of Trunk Disease Pathogens within Citrus Trees in Iran

1
Department of Plant Protection, Faculty of Agriculture, Shahid Bahonar University of Kerman, Kerman 7616914111, Iran
2
Instituto de Ciencias de la Vid y del Vino (ICVV), Consejo Superior de Investigaciones Científicas, Universidad de la Rioja, Gobierno de La Rioja, 26007 Logroño, Spain
*
Authors to whom correspondence should be addressed.
Plants 2020, 9(6), 754; https://doi.org/10.3390/plants9060754
Received: 4 May 2020 / Revised: 3 June 2020 / Accepted: 12 June 2020 / Published: 16 June 2020
Citrus trees with cankers and dieback symptoms were observed in Bushehr (Bushehr province, Iran). Isolations were made from diseased cankers and branches. Recovered fungal isolates were identified using cultural and morphological characteristics, as well as comparisons of DNA sequence data of the nuclear ribosomal DNA-internal transcribed spacer region, translation elongation factor , β-tubulin, and actin gene regions. Dothiorella viticola, Lasiodiplodia theobromae, Neoscytalidium hyalinum, Phaeoacremonium (P.) parasiticum, P. italicum, P. iranianum, P. rubrigenum, P. minimum, P. croatiense, P. fraxinopensylvanicum, Phaeoacremonium sp., Cadophora luteo-olivacea, Biscogniauxia (B.) mediterranea, Colletotrichum gloeosporioides, C. boninense, Peyronellaea (Pa.) pinodella, Stilbocrea (S.) walteri, and several isolates of Phoma, Pestalotiopsis, and Fusarium species were obtained from diseased trees. The pathogenicity tests were conducted by artificial inoculation of excised shoots of healthy acid lime trees (Citrus aurantifolia) under controlled conditions. Lasiodiplodia theobromae was the most virulent and caused the longest lesions within 40 days of inoculation. According to literature reviews, this is the first report of L. theobromae and N. hyalinum on citrus in Iran. Additionally, we report several Phaeoacremonium species, S. walteri, Pa. pinodella and C. luteo-olivacea on citrus trees for the first time in the world. View Full-Text
Keywords: bscogniauxia; botryosphaeriaceae; cadophora; citrus dieback; colletotrichum; phaeoacremonium bscogniauxia; botryosphaeriaceae; cadophora; citrus dieback; colletotrichum; phaeoacremonium
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Esparham, N.; Mohammadi, H.; Gramaje, D. A Survey of Trunk Disease Pathogens within Citrus Trees in Iran. Plants 2020, 9, 754.

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