Areca triandra Roxb. ex Buch.-Ham., a wild relative of cultivated arecanut (Areca catechu L.) is known as a resistant source for fruit rot caused by Phytophthora meadii Mc Rae. However, during monsoon 2019–20, a heavy shedding of immature nuts with whitish mycelial growth was observed from A. triandra plantations in Dakshina Kannada district, Karnataka, India. Pure culture of the associated oomycete was isolated from the symptomatic nuts and pathogenicity was confirmed. Based on morphological characteristics and internal transcribed spacer (ITS) sequences the pathogen was identified as P. palmivora E. J. Butler. To the best of our knowledge, this is the first report of Phytophthora palmivora infecting Areca triandra in the world.

槟榔。ex Buch.-Ham. 是栽培槟榔 ( Areca catechu L.)的野生近缘种，已知是由Phytophthora meadii Mc Rae引起的果实腐烂的抗性来源。然而，在 2019-20 年季风期间，在印度卡纳塔克邦 Dakshina Kannada 区的A. triandra种植园观察到大量脱落的未成熟坚果带有白色菌丝体生长。从有症状的坚果中分离出相关卵菌的纯培养物，并确认了致病性。基于形态特征和内部转录间隔区 (ITS) 序列，病原体被鉴定为P. palmivora EJ Butler。据我们所知，这是棕榈疫霉的第一份报告在世界范围内感染槟榔。