First report of southern blight caused by Athelia rolfsii on hemp in Greece

Chatzaki, Anastasia; Papadaki, Anastasia; Krasagakis, Nikolaos; Papaisidorou, Georgios; Goumas, Dimitrios E.; Markakis, Emmanouil A.

doi:10.1007/s42161-022-01072-8

Cited by 2 publications

(3 citation statements)

References 2 publications

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“…The A. rolfsii was the only strain causing disease in a robust manner within this experimental setup (Figure S2). Records also show that A. rolfsii is a prominent disease‐causing agent on C. sativa (Amaradasa et al, 2020; Chatzaki et al, 2022; Punja, 2021; Singh et al, 2022). Therefore, this strain was chosen to perform the plant‐pathogen experiments in this study to examine the pathological effect on C. sativa and the priming effect of chitosan to prevent the infection.…”

Section: Resultsmentioning

confidence: 99%

“…A. rolfsii causing southern blight disease has been increasingly identified to impact C. sativa plantations worldwide. Recently, it was isolated from industrial hemp in Virginia and Louisiana, USA, and Crete, Greece (Amaradasa et al, 2020; Chatzaki et al, 2022; Singh et al, 2022). Infected plants show wilting symptoms, with yellow wilted leaves, and a lower brown stem alongside appearances of cottony white mycelia and dark brown sclerotia near the crown.…”

Section: Introductionmentioning

confidence: 99%

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Hormonal and proteomic analyses of southern blight disease caused by Athelia rolfsii and root chitosan priming on Cannabis sativa in an in vitro hydroponic system

Suwanchaikasem,

Nie,

Selby‐Pham

et al. 2023

Plant Direct

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Southern blight disease, caused by the fungal pathogen Athelia rolfsii, suppresses plant growth and reduces product yield in Cannabis sativa agriculture. Mechanisms of pathology of this soil‐borne disease remain poorly understood, with disease management strategies reliant upon broad‐spectrum antifungal use. Exposure to chitosan, a natural elicitor, has been proposed as an alternative method to control diverse fungal diseases in an eco‐friendly manner. In this study, C. sativa plants were grown in the Root‐TRAPR system, a transparent hydroponic growth device, where plant roots were primed with .2% colloidal chitosan prior to A. rolfsii inoculation. Both chitosan‐primed and unprimed inoculated plants displayed classical symptoms of wilting and yellowish leaves, indicating successful infection. Non‐primed infected plants showed increased shoot defense responses with doubling of peroxidase and chitinase activities. The levels of growth and defense hormones including auxin, cytokinin, and jasmonic acid were increased 2–5‐fold. In chitosan‐primed infected plants, shoot peroxidase activity and phytohormone levels were decreased 1.5–4‐fold relative to the unprimed infected plants. When compared with shoots, roots were less impacted by A. rolfsii infection, but the pathogen secreted cell wall‐degrading enzymes into the root‐growth solution. Chitosan priming inhibited root growth, with root lengths of chitosan‐primed plants approximately 65% shorter than the control, but activated root defense responses, with root peroxidase activity increased 2.7‐fold along with increased secretion of defense proteins. The results suggest that chitosan could be an alternative platform to manage southern blight disease in C. sativa cultivation; however, further optimization is required to maximize effectiveness of chitosan.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Hormonal and proteomic analyses of southern blight disease caused by Athelia rolfsii and root chitosan priming on Cannabis sativa in an in vitro hydroponic system

Suwanchaikasem,

Nie,

Selby‐Pham

et al. 2023

Plant Direct

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“…Penelitian keanekaragaman hayati tumbuhan sebagai fungisida nabati diperlukan untuk menunjang kelestarian lingkungan dan pertanian berkelanjutan. Tanaman kedelai sering terinfeksi Athelia rolfsii (Sclerotium rolfsii) yang menurunkan produksi dan menyebabkan kerugian pada petani (Amirkyaei et al 2022;Chatzaki et al 2022). ).…”

Section: Pendahuluanunclassified

Mansoa alliacea and Allamanda cathartica Extract Formula for The Control of Stem Rot Disease on Soybean Plants

Susun¹,

Darsini

2023

J Fitopatol Indones

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Potensi keanekaragaman hayati flora di Indonesia belum dimanfaatkan secara maksimal sebagai pestisida nabati yang ramah lingkungan, dan mengurangi penggunaan pestisida sintetis pada tanaman. Daun Mansoa alliacea dan Allamanda cathartica memiliki potensi sebagai pestisida nabati karena secara in vitro mampu menghambat Athelia rolfsii, penyebab penyakit busuk batang pada tanaman kedelai. Penelitian dilakukan pada skala lapangan untuk menguji formula aplikasi ekstrak daun M.allicea dan A. cathartica yang berpengaruh terhadap perkembangan penyakit busuk batang, pertumbuhan dan produktivitas tanaman kedelai. Tahapan penelitian meliputi: ekstraksi, pembuatan formula dengan mencampurkan ekstrak daun M.allicea dan A. cathartica, aplikasi formula pada tanaman kedelai, pengamatan, dan pemanenan. Formula ekstrak 1.5% daun M. alliacea dan A. cathartica direkomendasikan untuk diaplikasikan karena dapat menekan penyakit busuk batang, meningkatkan pertumbuhan tanaman dan hasil panen di lapangan.

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First report of southern blight caused by Athelia rolfsii on hemp in Greece

Cited by 2 publications

References 2 publications

Hormonal and proteomic analyses of southern blight disease caused by Athelia rolfsii and root chitosan priming on Cannabis sativa in an in vitro hydroponic system

Hormonal and proteomic analyses of southern blight disease caused by Athelia rolfsii and root chitosan priming on Cannabis sativa in an in vitro hydroponic system

Mansoa alliacea and Allamanda cathartica Extract Formula for The Control of Stem Rot Disease on Soybean Plants

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