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Agronomy
Special Issues
Advances in Soybean Phytophthora Diseases Research
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Advances in Soybean Phytophthora Diseases Research

A special issue of Agronomy (ISSN 2073-4395). This special issue belongs to the section "Pest and Disease Management".

Deadline for manuscript submissions: closed (20 May 2022) | Viewed by 7030

Special Issue Editor

Dr. Guohong Cai

E-Mail Website
Guest Editor
Agricultural Research Services, United States Department of Agriculture, West Lafayette, IN 47907, USA
Interests: soybean; phytophthora; Phytophthora sojae; P. sansomeana

Special Issue Information

Dear Colleagues,

In our ongoing effort to ensure high-quality soybean production, managing diseases and pests plays an important role. Pathogens in the Phytophthora genus inflict heavy costs in soybean production as well as in other crops. In this Special Issue, we welcome reports on most recent progress in all aspects of understanding and managing soybean diseases caused by Phytophthora pathogens.

Dr. Guohong Cai
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Agronomy is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • soybean
  • phytophthora

Published Papers (2 papers)

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Review

10 pages, 719 KiB  
Review
Phytophthora sansomeana, an Emerging Threat to Soybean Production
by Christopher Evan Detranaltes, Jianxin Ma and Guohong Cai
Agronomy 2022, 12(8), 1769; https://0-doi-org.brum.beds.ac.uk/10.3390/agronomy12081769 - 28 Jul 2022
Cited by 3 | Viewed by 1593
Abstract
In 1990, new Phytophthora strains, later recognized as a new species, Phytophthora sansomeana, were found to cause Phytophthora root rot (PRR) in soybean in addition to P. sojae. The emergence and spread of a second pathogen causing PRR poses a significant [...] Read more.
In 1990, new Phytophthora strains, later recognized as a new species, Phytophthora sansomeana, were found to cause Phytophthora root rot (PRR) in soybean in addition to P. sojae. The emergence and spread of a second pathogen causing PRR poses a significant threat to soybean production. While genetic resistance to P. sojae has been developed and widely deployed as a management tool, these varieties appear largely ineffective at controlling P. sansomeana, which has a broad host-range and can infect and survive on non-leguminous hosts including fir trees, Rosaceous fruit trees, maize, and several herbaceous weeds. This contributes potential for broad distributions worldwide across both agricultural and natural ecosystems. Despite having been studied since the 1980s under a variety of informal designations, little is known about the epidemiology, host-interactions, and management of this emergent pathogen. Due to the lack of management options, increased frequency of first reports in new geographic areas, and the overall limited body of knowledge surrounding this novel pathogen, P. sansomeana warrants more research attention from both biological and disease management perspectives. The aim of this review is to summarize the hosts, distribution, pathogenicity, and current management strategies of P. sansomeana and to provide a concise record of where it has been studied under other informal designations. Its role in PRR of soybean is emphasized due to the economic magnitude of PRR-associated losses and its well-documented aggressiveness as a soybean pathogen. Full article
(This article belongs to the Special Issue Advances in Soybean Phytophthora Diseases Research)
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15 pages, 12932 KiB  
Review
Phytophthora Root Rot: Importance of the Disease, Current and Novel Methods of Control
by María L. Giachero, Stéphane Declerck and Nathalie Marquez
Agronomy 2022, 12(3), 610; https://0-doi-org.brum.beds.ac.uk/10.3390/agronomy12030610 - 28 Feb 2022
Cited by 10 | Viewed by 4931
Abstract
Phytophthora sojae is a pathogen of major agricultural importance, responsible for Phytophthora root rot (PRR) in soybean crops, which can cause significant yield losses each year. The severity of the disease depends on the soybean cultivar, its growth stage at the time of [...] Read more.
Phytophthora sojae is a pathogen of major agricultural importance, responsible for Phytophthora root rot (PRR) in soybean crops, which can cause significant yield losses each year. The severity of the disease depends on the soybean cultivar, its growth stage at the time of pathogen infection, and the environmental conditions. High soil moisture and temperature around 25–30 °C are favorable conditions for the development of the disease. Consequently, cultural practices are mainly limited to avoiding bad weather (high moisture) during the sowing or to promoting soil drainage. The use of chemical fungicides is restricted to seed treatments when there is a high risk of disease development. Currently the most economical option for controlling P. sojae is the use of host resistance. However, even if breeding is the main control strategy of PRR, the use of resistant cultivars leads to selection pressure on P. sojae populations, which can lead to high variability of the pathogen and therefore to its adaptation to overcome plant resistance. New strategies are therefore needed, including the use of biological control agents (BCAs). The use of BCAs (i.e., microorganisms or their metabolites) is a promising and sustainable alternative to PRR control that should be strengthened. Therefore, this review addresses the P. sojae–soybean interaction, mechanisms of pathogenicity and host resistance, as well as current and new management strategies with emphasis on the biological control of P. sojae and its associated mechanisms. Full article
(This article belongs to the Special Issue Advances in Soybean Phytophthora Diseases Research)
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