Biostimulant action of Lithothamnium sp. promoting growth, yield, and biochemical and chemical changes on onion

Mógor, Átila Francisco; Amatussi, Juliana de Oliveira; Mógor, Gilda; Gemin, Luiz Gabriel

doi:10.1007/s10811-021-02394-3

Cited by 8 publications

(2 citation statements)

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“…2b) indicate the synergy in the algal sources association. The increase in Aa content in onion plants subjected to Lm foliar applications was associated with a greater Nitrogen uptake (Mógor et al 2021), which may occur due to the effect of HA on the increase of adventitious roots and the activity of the enzyme nitrate reductase (NR) (Zandonadi et al 2007), allied to the increased activity of nitrate reductase at early growth (experiment I) that also may contribute to the N assimilation process (Mora et al 2010).…”

Section: Discussionmentioning

confidence: 99%

“…The rise in the demand for food from nature friendly production systems imposes the necessity to develop new biofertilizers and biostimulants. This class of products may contribute to sustainable agriculture (Bayona-Morcillo et al 2020) due to its composition, such as protein hydrolysates (Colla et al 2015), humic substances (Gemin et al 2019), seaweed extracts (Ariole et al 2015), calcareous algae (Mógor et al 2021) and microalgae (Colla and Rouphael 2020). In this sense, the combination of algae sources could show synergistic biostimulatory action, helping to design the next generation of plant biostimulants for sustainable agriculture (Rouphael and Colla 2018).…”

Section: Introductionmentioning

confidence: 99%

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Synergic combination of calcareous algae and cyanobacteria stimulate metabolic alterations improving plant growth and yield

Amatussi

Mógor

Cordeiro

et al. 2022

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The use of natural bioactive sources to promote plant growth and crop yield gains, such as those obtained from algae, are in evidence as a sustainable agriculture practice. In this sense, recently the calcareous alga Lithothamnium sp. had its bioactive plant growth promoting effect related to the presence of high degree of humification humic acid with pronounced auxin-like effects, while the cyanobacterium Arthrospira platensis (Spirulina plantensis) has the plant growth promoting effect attributed to a pool of bioactive molecules, such as the free L-amino acids and polyamines. To explore the effect of algae sources combinations as plant biostimulants, the aim of this work was to evaluate the effects of foliar application of micronized Lithothamnium (Lm) associated with A. platensis (Ap) dried biomass in onion (Allium cepa) metabolism, growth and yield. For that, adopting an step by step approach three experiments were conducted: (i) foliar application to onion plants grown in pots in greenhouse comparing algae sources alone and combined, (ii) foliar application to onion plants in the field under organic system testing algae sources combinations (first season), and (iii) foliar application in the field comparing doses and frequencies of selected combinations (second season). The association of algae sources promoted growth and biochemical changes, thus pigment contents, total sugars, amino acids and nitrate reductase enzyme activity were improved, increasing the onion yield by two seasons in a nature friendly way.

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Section: Discussionmentioning

confidence: 99%