# A novel method for extraction of high purity and high production Phytophthora sojae oospores

## TL;DR

This paper introduces a new method to extract high-quality oospores from Phytophthora sojae, improving research and disease management.

## Contribution

A novel, efficient method for extracting high-purity, viable, and pathogenic P. sojae oospores is developed.

## Key findings

- The new method yields higher quantities of pure oospores compared to traditional methods.
- The extracted oospores show improved viability, germination rates, and pathogenicity in experiments.
- The method supports research on sexual reproduction and disease management strategies for P. sojae.

## Abstract

Phytophthora sojae, a soil-borne oomycete pathogen, has been a yield limiting factor for more than 60 years on soybean. The resurgence of P. sojae (Phytophthora sojae) is primarily ascribed to the durable oospores found in soil and remnants of the disease. P. sojae is capable of infesting at any growth periods of the soybean, and the succeed infestation of P. sojae is predominantly attributed to long-lived oospores present in soil. Comprehending the molecular mechanisms that drive oospores formation and their significance in infestation is the key for effective management of the disease. However, the existing challenges in isolating and extracting significant quantities of oospores pose limitations in investigating the sexual reproductive stages of P. sojae.

The study focused on optimizing and refining the culture conditions and extraction process of P. sojae, resulting in establishment of an efficient and the dependable method for extraction. Novel optimized approach was yielded greater quantities of high-purity P. sojae oospores than traditional methods. The novel approach exceeds the traditional approaches with respect to viability, survival ability, germination rates of new oospores and the pathogenicity of oospores in potting experiments.

The proposed method for extracting P. sojae oospores efficiently yielded a substantial quantity of highly pure, viable, and pathogenic oospores. The enhancements in oospores extraction techniques will promote the research on the sexual reproductive mechanisms of P. sojae and lead to the creation of innovative and effective approaches for managing oomycete diseases.