Identification of new sources of resistance to dry root rot caused by Macrophomina phaseolina isolates from India and Myanmar in a mungbean mini-core collection

Pandey, Abhay K.; Yee, Myint; Win, Mar Mar; Lwin, Hnin Moh Moh; Adapala, Gopikrishna; Rathore, Abhishek; Sheu, Z.M.; Nair, Ramakrishnan M.

doi:10.1016/j.cropro.2021.105569

Cited by 17 publications

(12 citation statements)

References 22 publications

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“…Therefore, data were transformed by Arcsine transformation technique. Means were separated by least significant difference (LSD) test at 5% probability level where ANOVA indicated significant differences [ 30 ]. The data for the concentrations of extracts and insecticides were analyzed for each concentration, separately since these were not considered as a factor.…”

Section: Methodsmentioning

confidence: 99%

The impact of insecticides and plant extracts on the suppression of insect vector (Bemisia tabaci) of Mungbean yellow mosaic virus (MYMV)

et al. 2021

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Mungbean yellow mosaic virus (MYMV) is an important constraint in successful production of mungbean (Vigna radiata L.) in many countries, including Pakistan. The MYMV spreads by insect vector whitefly (Bemisia tabaci Gennadius). The use of resistant cultivars is the most effective management tactics for MYMV. Twenty mungbean varieties/lines were screened against insect vector of MYMV under field condition in the current study. Resistance levels for varieties/lines were assessed through visual scoring of typical disease symptoms. Furthermore, the impacts of two insecticides ‘Imidacloprid’ and ‘Thiamethoxam’ and two plant extracts, i.e., neem (Azadirachta indica), and Eucalyptus (Eucalyptus camaldulensis) were tested on the suppression of whitefly. Field screening indicated that none of the tested varieties/lines proved immune/highly resistant, while significant variations were recorded among varieties/lines for resistance level. All varieties/lines were systemically infected with MYMV. The varieties ‘AARI-2006’ and ‘Mung-14043’ were considered as resistant to MYMV based on visual symptoms and the lowest vector population. These varieties were followed by ‘NM-2006’ and ‘NL-31’, which proved as moderately resistant to MYMV. All remaining varieties/lines were grouped as moderately to highly susceptible to MYMV based on visual symptoms’ scoring. These results revealed that existing mungbean germplasm do not possess high resistance level MYMV. However, the lines showing higher resistance in the current study must be exploited in breeding programs for the development of resistant mungbean varieties/lines against MYMV. Imidacloprid proved as the most effective insecticide at all concentrations to manage whitefly population. Therefore, use of the varieties with higher resistance level and spraying Imidacloprid could lower the incidence of MYMV.

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Section: Methodsmentioning

confidence: 99%

The impact of insecticides and plant extracts on the suppression of insect vector (Bemisia tabaci) of Mungbean yellow mosaic virus (MYMV)

et al. 2021

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“…Biocontrol measures were not very effective due to the influence of various factors on their efficacy (Nelson, 2004). Genetic improvement by breeding a resistant variety ensures a cost-effective and environment-friendly system for the control of plant diseases (Arunakumar et al, 2021;Pandey et al, 2021). Identification and breeding of resistant mulberry varieties is the only justifiable option to achieve sustainable mulberry cultivation.…”

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confidence: 99%

Characterization and Pathogenicity of Lasiodiplodia theobromae Causing Black Root Rot and Identification of Novel Sources of Resistance in Mulberry Collections

et al. 2022

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Black root rot (BRR) caused by Lasiodiplodia theobromae is an alarming disease of mulberry that causes tremendous economic losses to sericulture farmers in India and China. Successful control of this disease can be attained by screening germplasm and identifying resistant sources. Seventy four diseased root samples were collected from farmer’s fields belonging to four major mulberry growing states of South India. Based on morpho-cultural and scanning electron microscopy studies, 57 fungal isolates were characterized and identified as L. theobromae. Phylogenetic analysis of concatenated internal transcribed spacer and β-tubulin sequences revealed variation of the representative 20 isolates of L. theobromae. Following the root dip method of inoculation, pathogenicity studies on susceptible mulberry genotypes (Victory-1 and Thailand male) recognized the virulent isolate MRR-142. Accordingly, MRR-142 isolate was used to evaluate resistance on a set of 45 diverse mulberry accessions. In the repeated experiments, the mulberry accession ME-0168 which is an Indonesian origin belonging to Morus latifolia was found to be highly resistant consistently against BRR. Eight accessions (G2, ME-0006, ME-0011, ME-0093, MI-0006, MI-0291, MI-0489, and MI-0501) were found to be resistant. These promising resistant resources may be exploited in mulberry breeding for developing BRR resistant varieties and to develop mapping populations which successively helps in the identification of molecular markers associated with BRR.

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“…This relatively low number of cowpea lines expressing resistance to the root rot disease demonstrates the difficulty in sourcing cowpea with high resistance levels to M. phaseolina ( Ndiaye, 2007 ; Ndiaye et al., 2010 ; Muchero et al., 2011 ; Ouédraogo et al., 2021 ). The challenge faced in finding sources of resistance to M. phaseolina is, however, not limited to cowpea since similar challenges have been reported for other grain legumes such as soybean ( Smith and Carvil, 1997 ; Pawlowski et al., 2015 ; Coser et al., 2017 ; Amrate et al., 2019 ), bean ( Mayek-Pérez et al., 2001a ; Hernandez-Delgado et al., 2009 ), mungbean ( Pandey et al., 2021 ) and black gram ( Iqbal et al., 2010 ; Elmerich et al., 2022 ). The relatively few genotypes with resistance to the root rot disease also further emphasise the challenges faced in getting sources of resistance that may be used to improve field resistance of farmer-preferred but susceptible cultivars to the disease.…”

Section: Discussionmentioning

confidence: 93%

Identification of sources of resistance in cowpea lines to Macrophomina root rot disease in Northern Ghana

Lamini¹,

Kusi²,

Cornelius³

et al. 2022

Heliyon

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Identification of new sources of resistance to dry root rot caused by Macrophomina phaseolina isolates from India and Myanmar in a mungbean mini-core collection

Cited by 17 publications

References 22 publications

The impact of insecticides and plant extracts on the suppression of insect vector (Bemisia tabaci) of Mungbean yellow mosaic virus (MYMV)

The impact of insecticides and plant extracts on the suppression of insect vector (Bemisia tabaci) of Mungbean yellow mosaic virus (MYMV)

Characterization and Pathogenicity of Lasiodiplodia theobromae Causing Black Root Rot and Identification of Novel Sources of Resistance in Mulberry Collections

Identification of sources of resistance in cowpea lines to Macrophomina root rot disease in Northern Ghana

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