The role of a microbial consortium on gas exchange and water relations in Allium cepa L. under water and nutritional deficit conditions

Blanco, Erika Lorena; Rada, Fermín; Paolini, Jorge

doi:10.1007/s00203-023-03449-4

Cited by 2 publications

(1 citation statement)

References 34 publications

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“…The bulbs, in the case of FF, had a similar weight as the bulbs from the control plants but with a higher nutrient content (Mg, P, Mn, Cu, and B). In the EF treatment, on its part, the application of nutrients translated into a greater growth of the bulbs pointing to a greater mobilization of water and nutrients through the sink organ [30]. The dilution effect would explain why they were only significant in the case of the FF treatment, although nutrient increases were detected in the EF treatment.…”

Section: Discussionmentioning

confidence: 95%

Combined Soil Microorganism Amendments and Foliar Micronutrient Nanofertilization Increased the Production of Allium cepa L. through Aquaporin Gene Regulation

Berna-Sicilia,

Quizhpe-Romero,

Hurtado-Navarro

et al. 2023

Life

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The aim of this study was to investigate the impact of changes in aquaporin expression on the growth of onion (Allium cepa L.) plants when subjected to dual applications of microorganism-based soil amendments and foliar nanoencapsulated mineral nutrients. Multiple physiological parameters related to water, gas exchange, and nutrient content in leaf, root, and bulb tissues were determined. Additionally, the gene expression of aquaporins, specifically PIP1, PIP2 (aquaporin subfamily plasma membrane intrinsic protein), and TIP2 (aquaporin subfamily tonoplast intrinsic protein), was analyzed. The findings revealed that the foliar application of nutrients in a nanoencapsulated form significantly enhanced nutrient penetration, mobilization, and overall plant growth to a greater extent than free-form fertilizers. Amendments with microorganisms alone did not promote growth but influenced the production of secondary metabolites in the bulbs. The combination of microorganisms and nanoencapsulated mineral nutrients demonstrated synergistic effects, increasing dry matter, mineral content, and aquaporin gene expression. This suggests that aquaporins play a pivotal role in the transport of nutrients from leaves to storage organs, resulting in the overexpression of PIP2 aquaporins in bulbs, improved water uptake, and enhanced cell growth. Therefore, the combined treatment with microorganisms and nanoencapsulated mineral nutrients may be an optimal approach for enhancing onion productivity by regulating aquaporins under field conditions.

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Section: Discussionmentioning

confidence: 95%