Publications by authors named "Jesus Leal-Lopez"

In Arabidopsis (Arabidopsis thaliana (L.) Heynh), exposure to volatile compounds (VCs) emitted by Penicillium aurantiogriseum promotes root hair (RH) proliferation and hyper-elongation through mechanisms involving ethylene, auxin, and photosynthesis signaling. In addition, this treatment enhances the levels of the small signaling peptide RAPID ALKALINIZATION FACTOR 22 (RALF22).

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In this work we compiled information on current and emerging microbial-based fertilization practices, especially the use of cell-free microbial culture filtrates (CFs), to promote plant growth, yield and stress tolerance, and their effects on plant-associated beneficial microbiota. In addition, we identified limitations to bring microbial CFs to the market as biostimulants. In nature, plants act as metaorganisms, hosting microorganisms that communicate with the plants by exchanging semiochemicals through the phytosphere.

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Article Synopsis
  • The plastidial enzyme PGI1 in Arabidopsis influences photosynthesis, development, and metabolism by participating in isoprenoid signal synthesis in vascular tissues.
  • Microbial volatile compounds (VCs), with low molecular weights, enhance photosynthesis and growth in plants via mechanisms that don’t involve PGI1, affecting GPT2 transcript levels instead.
  • Experiments with various Arabidopsis mutant plants revealed that while VCs boost growth and starch in wild-type plants, their benefits are diminished in PGI1-null and GPT2-null mutants, although reintroducing GPT2 specifically in vascular tissues restored growth and photosynthesis levels.
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