Identification of burrowing nematode (<i>Radopholus similis</i>) resistance in banana (<i>Musa spp</i>) genotypes for natural and challenge inoculated populations

Seenivasan, N.

doi:10.1080/03235408.2017.1321871

Cited by 11 publications

(13 citation statements)

References 18 publications

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“…Plant parasitic activities of R. similis on banana plants were evident in the form of increased density of the nematode that resulted in root damage through necrosis, death and reduced plant biomass. This root burrowing nematode is known to cause such root damage that inhibits water and nutrient uptake from the rhizosphere resulting in poor growth and toppling of banana trees (Devi et al, 2009;Haegeman et al, 2010;Seenivasan, 2017). Root damage by R. similis also allows co-infections by root-invading organisms such as microbial pathogens and other plant-parasitic nematodes involved in plant disease complexes (Khan and Sharma, 2020).…”

Section: Discussionmentioning

confidence: 99%

“…Such enzymes may have further degraded the weakened and damaged roots to facilitate penetration and colonization by R. similis and F. oxysporum V5w2. P-deficiency may also have triggered increased root exudation of organic carbon in the form of sugars into the rhizosphere (Louw-Gaume et al, 2010, 2017Canarini et al, 2019). The organic carbon may have intensified rhizosphere colonization by the saprophytic F. oxysporum V5w2 (Ochieno, 2020;Clocchiatti et al, 2021), making root invasion, colonization and degradation even more severe for easier penetration and multiplication of R. similis.…”

Section: Discussionmentioning

confidence: 99%

“…It should also be considered that microbes such as arbuscular mycorrhizal (AM) fungi known to be beneficial to host plants may also suppress plant growth while increasing infections by plantparasitic nematodes (Frew et al, 2018). In all these, it remains an open question on whether development and evaluation of resistant banana cultivars should focus on independent pest species (Tripathi et al, 2015;Seenivasan, 2017;Rebouças et al, 2018), or whether a broader approach that tries to simultaneously tackle disease complexes and abiotic stresses would be achievable in providing better banana cultivars (Lorenzen et al, 2010;Almeida et al, 2018;Batte et al, 2019;Tripathi et al, 2019Tripathi et al, , 2020Rocha et al, 2020).…”

Section: Discussionmentioning

confidence: 99%

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Soil Microbes Determine Outcomes of Pathogenic Interactions Between Radopholus similis and Fusarium oxysporum V5w2 in Tissue Culture Banana Rhizospheres Starved of Nitrogen, Phosphorus, and Potassium

Ochieno

2022

Front. Sustain. Food Syst.

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The contributions of soil biota toward outcomes of pathogenic interactions between Radopholus similis and Fusarium oxysporum V5w2 in tissue culture banana plants starved of nitrogen (N), phosphorus (P), and potassium (K) were investigated. The study was based on three screenhouse factorial experiments (2 × 2 × 2) comprising of potted banana plants with or without R. similis, with or without F. oxysporum V5w2, and either grown in sterile or non-sterile soil. All plants in each of the three experiments received nutrient solutions that were deficient in N, P, or K, respectively. In all the three nutritional regimes, plants inoculated with R. similis were heavily colonized by the nematode with high percentage dead roots and necrosis, while their root biomasses were low. N-starved plants co-inoculated with R. similis and F. oxysporum V5w2 had lower percentage dead roots and tended to have numerically lower nematode density compared to those treated with R. similis only, especially in non-sterile soil. N-starved plants inoculated with R. similis had higher shoot dry weight, were taller with more leaves that were larger, compared to those not inoculated with the nematode. Plants grown in non-sterile soil had lower percentage dead roots, necrosis and R. similis density than those from sterile soil, regardless of the nutrient regime. N-starved plants from non-sterile soil were shorter with smaller leaves having decreased chlorophyll content and lower biomass, compared to those from sterile soil. By contrast, P and K starved plants from non-sterile soil were taller with larger leaves and more biomass, compared to those from sterile soil. Roots inoculated with R. similis had higher endophytic colonization by Fusarium spp., especially when co-inoculated with F. oxysporum V5w2 and grown in sterile soil among the N and K-starved plants. In conclusion, pathogenic interactions between R. similis and F. oxysporum V5w2 are predominantly suppressed by a complex of soil microbes that exert plant growth promoting effects in tissue culture banana plants through N, P, and K dependent processes. Nitrogen is the most important limiting factor in rhizosphere interactions between banana roots, beneficial microbes and the pathogens. Soil sterilization and the stringent aseptic tissue culture techniques still require the development of alternative innovative ways of conserving microbial services for sustainable agriculture.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Soil Microbes Determine Outcomes of Pathogenic Interactions Between Radopholus similis and Fusarium oxysporum V5w2 in Tissue Culture Banana Rhizospheres Starved of Nitrogen, Phosphorus, and Potassium

Ochieno

2022

Front. Sustain. Food Syst.

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“…Banana and plantain production are affected by various pests and diseases, including bacterial wilt (Addy et al, 2016 ), nematodes (Seenivasan, 2017 ), Fusarium wilt (Dita et al, 2018 ; Arinaitwe et al, 2019 ) and yellow and black Sigatoka diseases (Ferreira et al, 2004 ; Timm et al, 2016 ). Black Sigatoka, caused by the fungus Mycosphaerella fijiensis Morelet [anamorph: Pseudocercospora fijiensis (Morelet) Deighton], can result in considerable negative economic impact, affecting both bananas and plantains across all global growing regions.…”

Section: Introductionmentioning

confidence: 99%

Genetic Improvement for Resistance to Black Sigatoka in Bananas: A Systematic Review

et al. 2021

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Bananas are an important staple food crop in tropical and subtropical regions in Asia, sub-Saharan Africa, and Central and South America. The plant is affected by numerous diseases, with the fungal leaf disease black Sigatoka, caused by Mycosphaerella fijiensis Morelet [anamorph: Pseudocercospora fijiensis (Morelet) Deighton], considered one of the most economically important phytosanitary problem. Although the development of resistant cultivars is recognized as most effective method for long term control of the disease, the majority of today's cultivars are susceptible. In order to gain insights into this pathosystem, this first systematic literature review on the topic is presented. Utilizing six databases (PubMed Central, Web of Science, Google Academic, Springer, CAPES and Scopus Journals) searches were performed using pre-established inclusion and exclusion criteria. From a total of 3,070 published studies examined, 24 were relevant with regard to the Musa-P. fijiensis pathosystem. Relevant papers highlighted that resistant and susceptible cultivars clearly respond differently to infection by this pathogen. M. acuminata wild diploids such as Calcutta 4 and other diploid cultivars can harbor sources of resistance genes, serving as parentals for the generation of improved diploids and subsequent gene introgression in new cultivars. From the sequenced reference genome of Musa acuminata, although the function of many genes in the genome still require validation, on the basis of transcriptome, proteome and biochemical data, numerous candidate genes and molecules have been identified for further evaluation through genetic transformation and gene editing approaches. Genes identified in the resistance response have included those associated with jasmonic acid and ethylene signaling, transcription factors, phenylpropanoid pathways, antioxidants and pathogenesis-related proteins. Papers in this study also revealed gene-derived markers in Musa applicable for downstream application in marker assisted selection. The information gathered in this review furthers understanding of the immune response in Musa to the pathogen P. fijiensis and is relevant for genetic improvement programs for bananas and plantains for control of black Sigatoka.

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“…In India, it is cultivated in 23 states with total area of 6.8 million ha and produced 10.93 million tonnes annually. Tamil Nadu state is the second largest producer of carrot in India that growing carrots in 1.3 million ha with 3900 tonnes of production (Welfare, 2016;Seenivasan, 2017a). To date, the northern root-knot nematode (Meloidogyne hapla Chitwood) is the only species that infects carrot grown on soils in Nilgiris and Kodaikanal hills of Tamil Nadu (Anita and Selvaraj, 2011;Devrajan and Seenivasan, 2002).…”

Section: Introductionmentioning

confidence: 99%

Identification of burrowing nematode (Radopholus similis) resistance in banana (Musa spp) genotypes for natural and challenge inoculated populations

Cited by 11 publications

References 18 publications

Soil Microbes Determine Outcomes of Pathogenic Interactions Between Radopholus similis and Fusarium oxysporum V5w2 in Tissue Culture Banana Rhizospheres Starved of Nitrogen, Phosphorus, and Potassium

Soil Microbes Determine Outcomes of Pathogenic Interactions Between Radopholus similis and Fusarium oxysporum V5w2 in Tissue Culture Banana Rhizospheres Starved of Nitrogen, Phosphorus, and Potassium

Genetic Improvement for Resistance to Black Sigatoka in Bananas: A Systematic Review

Status of Root-Knot Nematode, Meloidogyne hapla Infection on Carrot at Kodaikanal Hills of Tamil Nadu, India and Its Yield Loss Estimation

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