First report of Aspergillus terreus causing sunken leaf spot on Dracaena aletriformis in India
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RESEARCH NOTE
First report of Aspergillus terreus causing sunken leaf spot on Dracaena aletriformis in India Ashish Kumar Nayak 1,2 & Samarendra Mallick 3 & Bandamaravuri Kishore Babu 1,2 Received: 6 April 2019 / Accepted: 1 July 2019 # Australasian Plant Pathology Society Inc. 2019
Abstract Large-leaved dragon tree (Dracaena aletriformis L.) is an ornamental house plant of Asparagaceae family and native to tropical Africa. In summer 2017, dragon tree leaves showing sunken spots symptoms were observed in several grown on the premises of the CSIR-Central Institute of Medicinal and Aromatic Plants (CIMAP), Lucknow. The fungus was isolated from the lesions and its pathogenicity was confirmed. The fungus was identified based on morphological characteristics and confirmed through analysis of DNA sequences of internal transcribed spacer (ITS) regions of the ribosomal DNA. This is the first report on Dracaena aletriformis sunken leaf spot disease caused by Aspergillus terreus. Keywords Dracaena aletriformis . Sunken leaf spot . Plant pathogenic fungi
Dracaena aletriformis (family- Asparagaceae), commonly called large-leaved dragon tree, is a shrubby species of Dracaena which is a tropical plant native to Madagascar, Mauritius and other nearby islands of the Indian Ocean. It is widely grown as an ornamental plant and houseplant, valued for its richly colored, evergreen, thick and irregular stems (Banerjee et al. 2017). Traditional medicine practitioners of Madagascar and African countries have long believed that different species of Dracaena to cure diseases like dysentery, diarrhea, malarial symptoms, poisoning, dysmenorrhea and to be useful as an antipyretic and hemostatic agent (Randrianarivelojosia et al. 2003). Different species of Dracaena genus have also the capacity to remove a considerable amount of indoor pollutants and significant antimicrobial activity against Staphylococcus aureus, Pseudomonas aeruginosa, and Fusarium oxysporum (MINH et al. 2009). * Bandamaravuri Kishore Babu [email protected] 1
Department of Plant Pathology, Crop Protection Division, CSIR-Central Institute of Medicinal and Aromatic Plants (CIMAP), Lucknow 226015, India
2
Microbial genomics and Diagnostic Lab, Regional Plant Resource Centre (RPRC), Bhubaneswar, Odisha 751015, India
3
Plant taxonomy and DNA fingerprinting Division, Regional Plant Resource Centre (RPRC), Bhubaneswar, Odisha 751015, India
Diseases like anthracnose and leaf spot were previously reported in several species of Dracaena in different parts of the world. Leaf spot of Dracaena hookeriana species was reported from Chandigarh caused by Gloeosporium polymorphism (Sohi 1990). Serious damage by anthracnose (Colletotrichum gloeosporioides) on greenhouse crops of Dracaena deremensis was first time observed in Italy (Lenna and Montecchio 1995). Anthracnose of Dracaena fragranci by Colletotrichum gloeosporioides was recorded from China (Wang et al. 1997). There has been no prior report of sunken leaf spot of Dracaena aletriformis in India. The initial symptoms
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