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http://krishi.icar.gov.in/jspui/handle/123456789/1037| Title: | Combined application of native Trichoderma isolates possessing multiple functions for the control of Fusarium wilt disease in banana cv. Grand Naine. |
| Other Titles: | Not Available |
| Authors: | Thangavelu, R. and Gopi, M. |
| Published/ Complete Date: | 2015-05-18 |
| Project Code: | Not Available |
| Keywords: | Pathogens, screening, planting, metabolites, bananas, NRCB Research paper |
| Publisher: | Biocontrol Science and Technology |
| Citation: | 0 |
| Series/Report no.: | Not Available; |
| Abstract/Description: | Fusarium wilt caused by Fusarium oxysporum f.sp. cubense (Foc) is considered as a lethal disease of bananas worldwide. To manage the disease effectively, 20 rhizospheric and 43 endophytic Trichoderma isolates obtained from 12 different Foc resistant banana accessions were evaluated against Foc in vitro and in vivo. In vitro screening among Trichoderma isolates for their multiple functions (mycelial and spore germination inhibition, hydrogen cyanide, chitinolytic enzymes, non-volatile and volatile metabolites production) in suppressing Foc and promoting plant growth (IAA production and phosphate solubilization) indicated that the multiple bio-control actions were significantly higher in six isolates of rhizospheric Trichoderma and 10 isolates of endophytic Trichoderma compared to other isolates. The greenhouse evaluation of individual application of these rhizospheric and endophytic Trichoderma isolates against Fusarium wilt pathogen in cv. Grand Naine (AAA) indicated significant suppression of Fusarium wilt disease and increased plant growth characters as compared to Foc pathogen inoculated plants. However, none of these individual Trichoderma isolates recorded complete suppression of Fusarium wilt disease. Therefore the greenhouse evaluation involving combination of rhizospheric Trichoderma sp. NRCB3 + endophytic Trichoderma asperellum Prr2 recorded 100% reduction of Fusarium wilt disease and increased plant growth parameters up to 250% when compared to individual isolates application and Foc alone-inoculated plants. Further, the field evaluation of this combination of Trichoderma isolates applied for three times ((i). At the time of planting (ii) 2nd month after planting (iii) 4th month after planting) resulted in significant reduction of Fusarium wilt disease and also increase in bunch weight as compared to untreated control plants. Therefore, these Trichoderma isolates may be used in combination for the effective suppression of Fusarium wilt disease in banana. |
| Description: | Fusarium wilt of banana is one of the most devastating diseases of bananas in the world (Ploetz & Pegg, 1997). After the emergence of a virulent form of Foc (VCG 01213/16), the disease is posing a serious threat to the multibillion-dollar banana export industry and also to the livelihoods of small-scale banana growers (Ploetz, *Corresponding author. Email: rtbanana@gmail.com Biocontrol Science and Technology, 2015 Vol. 25, No. 10, 1147–1164, http://dx.doi.org/10.1080/09583157.2015.1036727 © 2015 Taylor & Francis Downloaded by [National Research Centre for Banana ] at 21:28 07 June 2015 2005). The fungus survives as chlamydospores in soil and on plant debris and infects the host through the root hairs, root tips and natural wounds along the lateral root base, colonising the vascular system of the rhizome and pseudostem. This induces characteristic wilting symptoms (Blomme et al., 2011) both externally (yellowing and wilting of leaves, longitudinal splitting in the pseudostem, etc.) and internally (reddish-brown discoloration of vascular tissue) (Stover, 1962). Infected plants generally do not produce a bunch and under severely diseased conditions the entire plant dies. In India, Fusarium wilt is considered as the major constraint to banana production (Thangavelu et al., 2001) and is ranked as No.1 banana disease (Molina & Valmayor, 1999). At present, the disease has become widespread and destructive in almost all the banana growing states of India and up to 95.5% of disease incidence was noticed particularly in Tamil Nadu where a greater number of susceptible varieties are grown. The important groups of banana affected by this disease are cvs. Silk (AAB), Neypoovan (AB), Pisang Awak (ABB), Virupakshi (AAB), Bluggoe (ABB) and Monthan (ABB). The cultivars such as Rasthali (Silk AAB) and Virupakshi (PomeAAB-Hill banana) are threatened with extinction (Thangavelu et al., 2001), and the total cultivation area of Rasthali (AAB) (Syn. Amritapani, Malbhog) has been drastically reduced due to this wilt disease. For example, in Andhra Pradesh, the farmers abandoned cultivation of the most susceptible cv. Amritapani (Silk-AAB) for more than 20 years due to this disease |
| ISSN: | Not Available |
| Type(s) of content: | Research Paper |
| Sponsors: | Not Available |
| Language: | English |
| Name of Journal: | Biocontrol Science and Technology |
| Volume No.: | 25(10) |
| Page Number: | 1-32 |
| Name of the Division/Regional Station: | Plant Pathology |
| Source, DOI or any other URL: | http://agris.fao.org/agris-search/search.do?recordID=US201500224683 |
| URI: | http://krishi.icar.gov.in/jspui/handle/123456789/1037 |
| Appears in Collections: | HS-NRCB-Publication |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| BST article-thanga paper.pdf | 405.32 kB | Adobe PDF | View/Open |
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