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Pathogenicity of Pythium aphanidermatum on Sugarcane: First Record from Iran | ||
| Mycologia Iranica | ||
| مقالات آماده انتشار، پذیرفته شده، انتشار آنلاین از تاریخ 09 تیر 1405 اصل مقاله (1.11 M) | ||
| نوع مقاله: Short Article | ||
| شناسه دیجیتال (DOI): 10.22092/mi.2026.373046.1350 | ||
| نویسندگان | ||
| Nahid Sadat Favazeli1؛ Zahra Mirsoleymani* 2؛ Fatemeh Salmaninezhad3؛ Reza Mostowfizadeh-Ghalamfarsa3 | ||
| 1Department of Plant Protection, Shahid Chamran University of Ahvaz, Ahvaz, Iran | ||
| 2Plant Protection Research Department, Fars Agricultural and Natural Resources Research and Education Center, AREEO, Shiraz, Iran | ||
| 3Department of Plant Protection, School of Agriculture, Shiraz University, Shiraz, Iran | ||
| چکیده | ||
| Sugarcane is one of the most important industrial crops in Iran, particularly in Khuzestan Province, where soilborne pathogens can threaten crop establishment and productivity. During surveys of sugarcane fields in Khuzestan, plants showing severe root rot, yellowing, and stunting were collected along with samples of rhizosphere soil and irrigation water samples. In total, 526 oomycete isolates were obtained using CMA-PARP selective medium, of which 11 isolates were identified as Pythium aphanidermatum based on morphological characteristics, including filamentous inflated sporangia, globose smooth oogonia, aplerotic oospores, and intercalary antheridia. Molecular identification of a representative isolate was carried out using sequence data from the ITS region and the cox1 gene. Phylogenetic analyses showed that this isolate belongs to Clade A of Pythium sensu stricto and groups with reference isolates of P. aphanidermatum with strong support. Pathogenicity tests demonstrated that this species caused severe root rot, yellowing, stunting, and wilting on sugarcane four weeks after inoculation, reproducing symptoms similar to those observed in the field. This study reports the first confirmed occurrence of P. aphanidermatum causing sugarcane root rot in Iran. The detection of this aggressive oomycete in sugarcane fields of Khuzestan highlights the need for continuous monitoring and integrated management of soilborne diseases in Iranian sugarcane production systems. | ||
| کلیدواژهها | ||
| Pathogenicity؛ Phylogeny؛ Pythium aphanidermatum؛ Root rot؛ Sugarcane | ||
| مراجع | ||
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