Browsing by Author "Merin Babu"
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Item Bio- cleansing of coconut palms infested by Rugose spiralling whitefly(2018-01) Josephrajkumar, A.; Chandrika Mohan; Poorani, J; Merin Babu; Krishnakumar, V.Item Community-level management of bio-resources for augmenting income from coconut-based farming systems in Kerala state, India(2020) Kalavathi, S.; Jeena Mathew; Indhuja, S.; Merin Babu; Muralidharan, K.Item Comparative Secretome Prediction and Analysis of Two Phytophthora spp(2017) Kumar Arvind; Rahul C.U; Merin Babu; Tony Grace; Rajesh, M.K.Item Conservation of Biological Control and Bioscavenging: in Rugose Spiralling Whitefly Management in Coconut(2019) Joseph Rajkumar, A.; Chandrika Mohan; Merin Babu; Krishnakumar, V.Item Diagnosis of invasive whitefly species co-occurring on coconut(2020-10) Joseph Rajkumar, A.; Chandrika Mohan; Merin Babu; Prathibha, P.S.; Vinayaka HegdeItem Discovery of a new Steinernema sp. (Rhabditida: Steinernematidae) with higher shelf life and better efficacy against red palm weevil under laboratory conditions(2020) Anes, K.M.; Merin Babu; Jinu Sivadasan; Joseph Rajkumar, A.Item Discovery of a sooty mould scavenging beetle, Leiochrinus nilgirianus Kaszab (Coleoptera: Tenebrionidae) on coconut palms infested by the invasive rugose spiralling whitefly, Aleurodicus rugioperculatus Martin (Hemiptera: Aleyrodidae)(2018) Josephrajkumar, A.; Chandrika Mohan; Poorani, J; Merin Babu; Daliyamol; Krishnakumar, V.; Vinayaka Hegde; Chowdappa, P.Item Domestic quarantine umbrella to prevent spread of root (wilt) disease to be strengthened(2015-08) Regi J. Thomas; Joseph Rajkumar, A.; Shareefa, M.; Merin BabuItem Euwallacea perbrevis (Schedl, 1951) and associated novel fungal symbiont, Fusarium sp.: A potential cause of wilting in cocoa, Theobroma cacao in India(2024) Shivaji Hausrao Thube; R Thava Prakasa Pandian; Rajkumar; Merin Babu; Josephrajkumar, A.; Santhoshkumar P; B.J. Nirmal Kumara; Vinayaka Hegde; Balanagouda Patil; H. Rajashekara; T. Prabhulinga; Babasaheb B. F; Shailesh Gawande; Dipak Nagrale; M. Devindrappa; Rajesh, M.K.Cocoa is a commercially important beverage crop that faces new challenges in the context of climate change, which can alter pest and disease dynamics in cocoa plantations. In the Dakshina Kannada district of Karnataka, India, an abrupt increase in cocoa wilt was observed during the 2017–18 and 2018–19 seasons. Systematic examination of affected trees revealed consistent attacks of Euwallacea perbrevis (Schedl, 1951; Coleoptera: Curculionidae: Scolytinae). In-depth studies of the wilted trees revealed the association of the plant pathogenic fungus Fusarium sp. with Euwallacea perbrevis. The identity of the obtained pure culture from the insect and infected tree was confirmed as Fusarium sp. using amplification of ribosomal DNA, RNA polymerase II largest subunit (RPB1) and translation elongation factor 1 (Tef1) genes. Notably, this study reports a remarkable case of mutualistic association between ambrosia beetles and Fusarium sp., belonging to the Fusarium solani species complex (FSSC), rather than the Ambrosia Fusarium clade (AFC). This finding highlights the intriguing diversity of mutualistic relationships in nature and sheds new light on the complex interactions between organisms. The present study also investigated the impact of rainfall on the colonization and spread of the Euwallacea-Fusarium complex. The findings revealed that rainfall was identified as a predisposing factor for the incidence and spread of attacks. Additionally, the study conducted a comprehensive analysis of the modeling of Euwallacea-Fusarium complex spread over a specific period of time.Item Evaluation of a native isolate of Metarhizium anisopliae (Metschn.) Sorokin TMBMA1 against tea mosquito bug, Helopeltis theivora infesting cocoa (Theobroma cacao L.)(2022) Shivaji Hausrao Thube; Thavaprakaash. N; Merin Babu; Josephrajkumar, A.; Priyank Hanuman Mhatre; P. Santhosh Kumar; B.J. Nirmal Kumar; Vinayaka Hegde; Satish Namdeo ChavanItem First report on the association of ‘Candidatus Phytoplasma asteris’ with lethal wilt disease of coconut (Cocos nucifera L.) in India(2020) Merin Babu; Thangeswari, S.; Joseph Rajkumar, A.; Krishnakumar, V.; Karthikeyan, A.; Selvamani, V.; Daliyamol; Vinayaka Hegde; Maheswarappa, H.P.; Anitha KarunItem Global scenario on phytoplasmal diseases in palms(2022) Vinayaka Hegde; Merin Babu; Josephrajkumar, A.Item Good Management Practices for Pest and Disease Suppression in Coconut(2023) Josephrajkumar A; Anes K.M; Merin Babu; Jilu V. Sajan; Prathibha P.S; Indhuja S; Shareefa M; Manikantan, M.R.; Vinayaka Hegde; Anithakumari PItem Holistic Package to Mitigate Exotic Whiteflies on Coconut(2020-09) Joseph Rajkumar, A.; Anes, K.M.; Merin Babu; Prathibha, P.S.; Chandrika MohanItem Identification and confirmation of hotspot areas and management of root (wilt) disease in coconut(2019) Ramjegathesh Rajendran; Rajeswari Esakkimuthu; Venkatesan Kandasamy; Merin Babu; Maheswarappa, H.P.Item Identification of expressed resistance gene analog sequences in coconut leaf transcriptome and their evolutionary analysis(2015) Rajesh, M.K.; Rachana, K.E.; Naganeeswaran Sudalaimuthu Asari; Shafeeq Rahman; Regi J. Thomas; Shareefa, M.; Merin Babu; Anitha KarunCoconut, an important crop of the tropics and subtropics, is susceptible to a variety of diseases and enhancing disease resistance has been the major goal of coconut breeding programs all over the world. Information on the presence and distribution of disease resistance (R) genes, which play a primary role in the detection of pathogens and the initiation of specific plant defenses, is scarce in coconut. In this study, RNA-Seq was used to generate the transcriptome of leaf samples of coconut root (wilt) disease-resistant cultivar Chowghat Green Dwarf. Comprehensive bioinformatics analysis identified 243 resistance gene analog (RGA) sequences, comprising 6 classes of RGAs. Domain and conserved motif predictions of clusters were performed to analyze the architectural diversity. Phylogenetic analysis of deduced amino acid sequences revealed that coconut NBS-LRR type RGAs were classified into distinct groups based on the presence of TIR or CC motifs in the N-terminal regions. Furthermore, qRT-PCR analysis validated the expression of randomly selected NBS-LRR type RGAs. The results of this study provide a sequence resource for development of RGA-tagged markers in coconut, which would aid mapping of disease-resistant candidate genes. In addition, we hope that this study will provide a genomic framework for isolation of additional RGAs in coconut via comparative genomics and also contribute to the deciphering of mode of evolution of RGAs in Arecaceae.Item Inch of land with bunch of enterprises(2018) Anithakumari, P.; Merin Babu; Indhuja, SItem An Insight into the Regime of Soil Borne Plant Pathogens(2018) Daliyamol; Merin Babu; Rajeev, G.Item An Insight into the Regime of Soil Borne Plant Pathogens(2018) Daliyamol; Merin Babu; Rajeev, G.Item Interlinking Coconut with Microbes(2017-10) Indhuja, S.; Daliyamol; Merin Babu