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All Journal Cropsaver : Journal of Plant Protection Planta Tropika JPT : JURNAL PROTEKSI TANAMAN (JOURNAL OF PLANT PROTECTION) Akta Agrosia Journal of Applied Agricultural Science and Technology Open Science and Technology
Darnetty, Darnetty
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Environmental Science Mechanical Engineering

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Potency of Indigenous Epiphytic Yeast to Control Colletotrichum capsici, the Cause of Anthracnose Disease in Red Chili: Potensi Khamir Epifit Indigenus untuk Mengendalikan Colletotrichum capsici, Penyebab Penyakit Antraknosa pada Buah Cabai Merah Darnetty, Darnetty; Hermaleni, Utari; Yunisman, Yunisman
Jurnal Proteksi Tanaman (Journal of Plant Protection) Vol. 6 No. 2 (2022): December 2022
Publisher : Plant Protection Department, Faculty of Agriculture, Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jpt.6.2.55-64.2022

Abstract

Anthracnose is an important disease in red chili caused by Colletotrichum capsici which can reduce productivity by up to 65%. Controlling using indigenous epiphytic yeasts has never been done. The study aimed to determine the ability of indigenous epiphytic yeast isolates to control C. capsici on red chili. The study was carried out at the Phytopathology Laboratory, Faculty of Agriculture, Universitas Andalas, from August 2019 - April 2020 in vitro and in vivo. The study used a completely randomized design (CRD) which consisted of 6 treatments with five different isolates (4 isolates from fruit and one from leaves) and a control. Parameters observed were macroscopic and microscopic characteristics of yeasts, C. capsici colony area, disease incubation period, and anthracnose symptoms. The results showed that the five epiphytic yeast isolates could suppress the growth of C. capsici, inhibit colony expansion between 27.09 – 59.11%, extend the incubation period for one day, and inhibit the expansion of anthracnose symptoms between 52.30 – 62.64%. Epiphytic yeast isolate KB1 derived from fruit has the highest inhibition.
Application of Trichoderma asperellum Liquid Culture for Inducing Resistance of Chili Plant Against Fusarium Wilt Albana, Hasan; Nurbailis, Nurbailis; Darnetty, Darnetty
PLANTA TROPIKA Vol. 14 No. 1 (2026)
Publisher : Department of Agrotechnology, Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/pt.v14i1.24968

Abstract

Fusarium wilt, caused by the fungus Fusarium oxysporum, is a significant disease that severely reduces the productivity of chili plants. This study investigated the potential of Trichoderma asperellum’s liquid culture as a biological control agent to control this disease and induce plant defense enzymes. Our findings demonstrated that applying the liquid culture of T. asperellum can significantly suppress disease development. Several treatments (A, D, E, and G) proved to be the most effective, showing the lowest disease severity and incidence. Furthermore, these treatments successfully increased the activity of key plant defense enzymes: peroxidase in roots (0.8746 U/g) and phenylalanine ammonia-lyase (PAL) in both roots (0.1886 μmol TCA/g) and stems (0.1653 μmol TCA/g). This increase in enzyme activity suggests that T. asperellum not only directly controls the pathogen but also triggers internal resistance mechanisms within the plant. While the liquid culture did not show a significant effect on plant growth, this may be due to the natural variability of T. asperellum and to additional factors, such as pests and environmental stress, in the field. Liquid culture of T. asperellum shows potential as a bioprotectant by suppressing the pathogen and enhancing host resistance.
Co-Authors Afriyanita, Afriyanita ALBANA, HASAN Eka Candra Lina Hermaleni, Utari Khairul , Ujang Liswarni, Yenny NOVRI NELLY Nurbailis Putri, Desi Afrida Reflin , Reflin Resti , Zurai Ricar, Wahyu Siregar , Sri Lestari Kurnia Sulyanti, Eri Swandi, Fradilla Tores, Farah Nabila UJANG KHAIRUL Wihayyu, Afri Winarto Winarto Yunisman, Yunisman Zurai Resti