Phylogenetic relationships among 50 Phytophthora species and between Phytophthora and other oomycetes were examined on the basis of the ITS sequences of genomic rDNA. Phytophthora grouped with Pythium, Peronospora, and Halophytophthora, distant from genera in the Saprolegniales. Albugo was intermediate between these two groups. Unlike Pythium, Phytophthora was essentially monophyletic, all but ...

The binding of concanavalin A (Con A) to the cell surface of zoospores and cysts of Phytophthora palmivora was studied by radiometry (125I-Con A), ultraviolet microscopy (fluorescein-Con A) and electron microscopy peroxidase-diaminobenzidine technique). Zoospores were found to secrete during the early stages of encystment a Con A-binding material susceptible to trypsin digestion. This glycoprot...

The anamorphic fungus genus Periconia is worldwide in distribution and causes foliar disease on plants mostly in tropical and subtropical regions. This study presents the description and illustration of P. palmivora discovered on leaves of Phoenix dactylifera (Palmae/Arecaceae) from Terai forest region of Uttar Pradesh, India. The taxonomic determination was based on morphological characteristi...

Phytophthora palmivora is a destructive plant pathogenic oomycete that has caused lethal diseases in wide range of hosts. It pan-tropical distributed pathogen can infect plants at all growth stages. Extensive studies have linked P. to severe several crops, such as black pepper, rubber, cocoa, and durian, causing global economic losses. This review covers the following topics depth: (i) phytopat...

The endophytic niches of plants are a rich source of microbes that can directly and indirectly promote plant protection, growth and development. The diversity of culturable endophytic fungi from stems and branches of Theobroma cacao (cacao) and Theobroma grandiflorum (cupuaçu) trees growing in the Amazon region of Brazil was assessed. The collection of fungal endophytic isolates obtained was ap...

Fruit rot disease is very damaging to cacao pods, which caused by Phytoptora palmivora . The attack rate of P. varies. In Java, losses due this reduce yields 90 %. a soil–borne pathogen. It currently included in the Kingdom Chromista. Control with fungicides not successful at time, alternatives biologis control Trichoderma sp. This research used Completely Randomized Design (CRD) was arranged f...

Abstrak. Salah satu perkebunan di Indonesia menghasilkan kakao (Theobroma cacao L.), yang memberikan kontribusi signifikan terhadap perekonomian dan cadangan devisa Indonesia. Masih terdapat tantangan dalam pengembangan seluruh Indonesia, termasuk Provinsi Aceh, antara lain adanya penyakit hama berkontribusi rendahnya produktivitas kakao. Penelitian ini bertujuan adalah untuk mendapatkan isolat...

Oomycetes, or water moulds, are fungal-like organisms phylogenetically related to algae. They cause devastating diseases in both plants and animals. Here, we describe seven oomycete species that are emerging or re-emerging threats to agriculture, horticulture, aquaculture and natural ecosystems. They include the plant pathogens Phytophthora infestans, Phytophthora palmivora, Phytophthora ramoru...

Phvytophthora megakarya is a devastating oomycete pathogen that causes black pod disease in cacao. Phytophthora species produce a protein that has a similar sequence to the necrosis and ethylene inducing protein (Nep1) of Fusarium oxysporum. Multiple copies of NEP1 orthologs (PmegNEP) have been identified in P. megakarya and four other Phytophthora species (P. citrophthora, P. capsici, P. palmi...