Publications by authors named "Manoel Teixeira Souza"

Oil palm ( Jacq.) is a oilseed crop of great economic importance drastically affected by abiotic stresses. MicroRNAs (miRNAs) play crucial roles in transcription and post-transcription regulation of gene expression, being essential molecules in the response of plants to abiotic stress.

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Oil palm ( Jacq.) is the number one source of consumed vegetable oil nowadays. It is cultivated in areas of tropical rainforest, where it meets its natural condition of high rainfall throughout the year.

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The multipurpose tree (Jacq.) Walp. adapts to a very high level of salt stress (≥20 dS m) and resumes the production of new leaves around 2 weeks after losing all leaves due to abrupt salinity stress.

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Soil salinity is one abiotic stress that threatens agriculture in more than 100 countries. Gliricidia [Gliricidia sepium (Jacq.) Kunth] is a multipurpose tree known for its ability to adapt to a wide range of soils; however, its tolerance limits and responses to salt stress are not yet well understood.

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Article Synopsis
  • Oil palm is the world's most consumed vegetable oil but is threatened by fatal yellowing (FY), a condition still not understood despite decades of research.
  • The study's objective was to explore metabolic expression in oil palm affected by FY using untargeted metabolomics, employing methods like UHPLC-ESI-MS for detailed analysis.
  • Results identified over 50 metabolites, with nine showing significant differences between symptomatic and non-symptomatic plants, highlighting potential stress responses and nutrient absorption issues linked to FY.
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Background: Photosynthesis can be roughly separated into biochemical and photochemical processes. Both are affected by drought and can be assessed by non-invasive standard methods. Gas exchange, which mainly assesses the first process, has well-defined protocols.

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