147 results match your criteria: "ICAR-Central Plantation Crops Research Institute.[Affiliation]"

Tomato leaf curl New Delhi virus-derived AC4 protein interacts with host proteins involved in auxin biosynthesis and reprograms auxin biosynthesis/signaling to help in viral replication and manifestation of the disease-associated symptoms. Perturbations of phytohormone-mediated gene regulatory network cause growth and developmental defects. Furthermore, plant viral infections cause characteristic disease symptoms similar to hormone-deficient mutants.

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Studies over the decades highlighted the role of lipids in modulating inherent glycaemic response of rice, still much needed to elucidate how the chain length and saturation of fatty acid (FA) influence this. Hence in this study, we investigated the in vitro glycaemic response, starch-lipid complexing ability and resistant starch (RS) formation in three rice types [white rice (WR), black rice (BR) and red rice (RR)] cooked with four fats [ghee, coconut oil (CO), virgin coconut oil (VCO) and rice bran oil (RBO)], with three cooking conditions ('before', 'during' and 'after'). Inherent glycaemic response was found least in RR (81.

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Date palm ( L.; 2n = 36; Arecaceae), cultivated in tropical and sub-tropical regions worldwide, is a staple food for people in the Middle East region and has economic value throughout the world. Tissue culture is considered as a feasible technique for the large-scale multiplication of elite date palm varieties.

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spp. is an oomycetes pathogen which causes serious damage to a wide range of crops. Bud rot disease of coconut palm, caused by , causes huge economic losses since it cannot be detected at an early stage.

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Green synthesis of nanoparticles (NPs) involves the use of diverse extracts of biological origin as substrates to synthesize NPs and can overcome the hazards associated with chemical methods. Coconut inflorescence sap, which is unfermented phloem sap obtained by tapping of coconut inflorescence, is a rich source of sugars and secondary metabolites. In this study, coconut inflorescence sap was used to synthesize silver NPs (AgNPs).

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Genome-wide analysis of small RNAs identifies somatic embryogenesis- specific miRNAs and their targets and provides novel insights into the mechanisms governing somatic embryogenesis in coconut, a highly in vitro recalcitrant species. Coconut, a major plantation crop of the tropics is recalcitrant to in vitro culture with a very low rate of somatic embryo turnover. Clonal propagation to enhance the production of high yielding, disease-free planting material in coconut has remained a distant reality.

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The coconut rhinoceros beetle, L. (Insecta: Coleoptera: Scarabaeidae: Dynastinae is one of the world's most important endemic and incessant pests of coconut (particularly in India and Southeast Asia), causing an estimated 10% yield loss in the crop. Various management strategies formulated and implemented to control this pest include bioagents, insecticide sprays, liquid formulations, pheromone traps, and botanical formulations.

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In this study, the response of 6-month-old cocoa (Theobroma cacao L.) seedlings to elevated CO concentration [ECO], elevated temperature [ET], and their interaction with water deficit stress was studied in an open top chamber (OTC). Each OTC was maintained at chamber control (400 ppm CO), [ECO] 550 ppm, [ECO] 700 ppm, ET 3 °C above chamber control, and ET 3 °C + [ECO] 550 ppm.

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Analysis of stress-associated miRNAs of Glycine max (L.) Merrill reveals wider ramifications of small RNA-mediated (conserved and legume-specific miRNAs) gene regulatory foot prints in molecular adaptive responses. MicroRNAs (miRNAs) are indispensable components of gene regulatory mechanism of plants.

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Microsatellites are ubiquitously distributed, polymorphic repeat sequence valuable for association, selection, population structure and identification. They can be mined by genomic library, probe hybridization and sequencing of selected clones. Such approach has many limitations like biased hybridization and selection of larger repeats.

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Plant RNA silencing systems are organized as a network, regulating plant developmental pathways and restraining invading viruses, by sharing cellular components with overlapping functions. Host regulatory networks operate either at the transcriptional level via RNA-directed DNA methylation, or at the post-transcriptional stage interfering with mRNA to restrict viral infection. However, viral-derived proteins, including suppressors of RNA silencing, favour virus establishment, and also affect plant developmental processes.

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Cryopreservation of Arecanut (Areca catechu L.) Pollen.

Cryo Letters

June 2018

IRD, UMR DIADE, BP 64501, 34394 Montpellier, Cedex 05, France.

Background: Cryopreservation opens new avenues in the field of genetic resource conservation, especially in recalcitrant seeded palms such as arecanut for which field genebanks are exposed to pest and disease attacks and natural calamities. It is only through cryopreservation that the safety of the conserved germplasm can be assured at a relatively low cost for extended periods.

Objective: The objective of this work was to standardize various aspects of arecanut pollen cryopreservation, viz.

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Rhizome rot of turmeric caused by Pythium aphanidermatum is a major threat to turmeric-cultivating areas of India. This study intends to evaluate the performance of fluorescent pseudomonads against Rhizome rot disease and understand the resistance mechanism in Turmeric plants. Fluorescent pseudomonads were screened against Pythium aphanidermatum using dual culture.

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Direct and indirect influences of intercrops on the coconut defoliator .

J Pest Sci (2004)

August 2017

3School of Biosciences, University of Nottingham, Sutton Bonington Campus, Loughborough, Leicestershire, LE12 5RD UK.

Coconut palm () infestation by (Lepidoptera: Oecophoridae) in the Indian subcontinent may occur in November to May each year in the same or adjoining areas of plantations. Parasitoids of may also be consistently present at these times. During other periods, pests and/or parasitoids could be maintained on intercrops that are commonly grown throughout the year.

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Biochemical and nutritional characterization of coconut (Cocos nucifera L.) haustorium.

Food Chem

January 2018

Department of Biochemistry & Molecular Biology, Central University of Kerala, Padannakad, (Transit Campus) 671 314, Kerala, India. Electronic address:

Study was conducted to determine the biochemical constituents in coconut (Cocos nucifera L.) haustorium, a spongy tissue formed during coconut germination. Results indicated that 100g of dried coconut haustorium contained 1.

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To understand bacterial community dynamics during the vermicomposting of lignin-rich coconut leaves using an indigenous isolate of an epigeic earthworm, Eudrilus sp., we employed amplicon-based pyrosequencing of the V1 to V3 region of the 16S rRNA genes. Total community DNA was isolated from two separate vermicomposting tanks in triplicate at four different stages of the process: pre-decomposition (15th day), initial vermicomposting (45th day), 50-70% vermicomposting (75th day) and mature vermicompost (105th day).

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Background: Ozone has shown the potential to control stored product insect pests. The high reactivity of ozone leads to special problems when it passes though an organic medium such as stored grains. Thus, there is a need for a simulation study to understand the concentration profile and flow characteristics of ozone in stored paddy bulks as a function of time.

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"…" Plants, though sessile, have developed a unique strategy to counter biotic and abiotic stresses by symbiotically co-evolving with microorganisms and tapping into their genome for this purpose. Soil is the bank of microbial diversity from which a plant selectively sources its microbiome to suit its needs. Besides soil, seeds, which carry the genetic blueprint of plants during trans-generational propagation, are home to diverse microbiota that acts as the principal source of microbial inoculum in crop cultivation.

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Article Synopsis
  • The production and supply of high-quality planting material is crucial for improving coconut cultivation, but there are significant challenges in achieving this due to the difficulty in propagating coconut palms in vitro.
  • Rapid methods like somatic embryogenesis are promising for mass-producing quality coconut palms, yet the process faces obstacles due to the plant's resistance to in vitro culture.
  • This study utilized RNA-Seq to analyze gene expression in coconut embryogenic calli, identifying key genes involved in the somatic embryogenesis process, and providing valuable insights into the molecular events that could improve propagation techniques.
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Black pepper associated bacterium BP25 was isolated from root endosphere of apparently healthy cultivar Panniyur-5 that protected black pepper against Phytophthora capsici and Radopholus similis - the major production constraints. The bacterium was characterized and mechanisms of its antagonistic action against major pathogens are elucidated. The polyphasic phenotypic analysis revealed its identity as Pseudomonas putida.

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Coconut (Cocos nucifera L.) is one of the important palms grown both as a homestead and plantation crop in countries and most island territories of tropical regions. Different DNA-based marker systems have been utilized to assess the extent of genetic diversity in coconut.

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