Ascophyllum nodosum seaweed extract in Inga edulis seedlings under drought and the potential of phenotypic plasticity

Santos, Cleberton Correia; Silva, Antonio Augusto Souza; Carvalho de Oliveira, Caio Henrique; Silverio, Juliana Milene; dos Santos Dias, Anderson; Linné, Jéssica Aline; de Paula Quintão Scalon, Silvana; Alovisi, Alessandra Mayumi Tokura

doi:10.1007/s10811-023-03094-w

Cited by 2 publications

(2 citation statements)

References 53 publications

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“…Our results can be explained by the cultivation conditions and can contribute to understanding the way in which A. nodosum operates by reducing stress, as plants treated with the extract of this alga and exposed to low temperatures accumulated high concentrations of proline [64]. Contrary to what we observed for soybean, other species such as tomato and Inga edulis appear to increase proline synthesis when treated with A. nodosum [19,65].…”

Section: Discussionmentioning

confidence: 48%

Foliar Application of Biostimulant Mitigates Water Stress Effects on Soybean

Melo,

da Silva,

da Costa

et al. 2024

Agronomy

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Climate change has emerged as a challenge for soybean cultivation around the world, stimulating the development of technological alternatives that aim to mitigate the damage caused by water deficit. From this perspective, algae extract-based biostimulants have been tested to reduce water stress in several crops, but little is known about their effects on soybean. Thus, we hypothesize that a commercial biostimulant based on Ascophyllum nodosum can improve the physiological performance and water relations of Glycine max plants subjected to water deficit. To test this hypothesis, we set up an experiment in controlled conditions in a greenhouse, considering five treatments (control; application of biostimulant; water deficit (WD); WD + application of biostimulant; and WD + split application of biostimulant). The experiment was designed in completely randomized blocks with four replications per treatment and conducted in polyethylene pots containing 10 L of soil and three plants per pot. The irrigation was carried out daily; the water deficit was 50% soil moisture at field capacity, starting at the R1 stage (beginning of flowering, where there is at least one flower open at any node on the plant) and maintained for ten days. The biostimulant was applied concurrently with the onset of water deficit. We confirmed the hypothesis that foliar application of 1.0 L ha−1 of the biostimulant reduces the deleterious effects of the common water deficit at the beginning of the reproductive stage of soybean through the reduction of damage from oxidative stress (reduction of malondialdehyde synthesis by 31.2% in relation to the WD plants), maintenance of water potential and cellular homeostasis (10.2% increase in relative water content when compared with WD plants), and conservation of the contents of chlorophyll in leaves and stimulation of photosynthesis and carboxylation (68% increase in net photosynthetic rate and 49.3% increase in carboxylation efficiency in relation to WD plants). However, when applied in installments, the biostimulant was not efficient in reducing soybean water stress. Therefore, we conclude that the application of a biostimulant based on A. nodosum can help reduce the harmful effects of water deficit on soybean plants, opening up perspectives for the mass use of this extract in agricultural crops produced on a large scale.

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Section: Discussionmentioning

confidence: 48%

Foliar Application of Biostimulant Mitigates Water Stress Effects on Soybean

Melo,

da Silva,

da Costa

et al. 2024

Agronomy

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“…Furthermore, although we have not evaluated it, because ANE contains amino acids, and other elicitors compounds in its composition, it may contribute to alleviating the effect of isolated or multiple abiotic stresses. since they are incorporated into chlorophyll, amino acids, proteins and participate in various enzymatic processes(Bang et al 2020;Santos et al 2023). Nitrogen is directly associated with the growth of the shoot plant, and ANE favors the increase of this nutrient and its e ciency of uptake anduse (Łangowski et al 2022; Bernardes et al 2023; Santos et al 2023).…”

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confidence: 99%

Impact of Ascophyllum nodosum extract in soybean seeds treatment and seedling vigor

Oliveira,

Silva,

Santos

et al. 2023

Preprint

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Seeds treatment with biostimulants for soybean is a promising practice, but there are little studies regarding protocols of bioinputs, such as Ascophyllum nodosum L. seaweed extract. We aimed to evaluate the effect of doses of A. nodosum on soybean seeds treatment, and its impact on germination and seedling vigor. Two tests were conducted, i) germination and seedlings vigor, and ii) emergence and photochemical processes in the field. Six doses of A. nodosum extract (ANE) were tested: 0, 1, 2, 3, 4, and 5 mL kg seeds−1, whose seeds were packed in plastic packaging, adding the corresponding dose and homogenizing, leaving them to rest for 15 minutes. ANE treatment did not influence the first count and seed germination. Soybean seedlings from seeds treated with 5 mL kg−1 ANE had greater growth and biomass of the shoot and root. We observed increase 18% for shoot dry matter with seeds treatment of 5 mL kg−1 ANE compared to untreated seeds. The responses were variable for the emergence speed index, and did not influence the photochemical processes in photosystem II in function at ANE, while the seeds treated with ANE had higher chlorophyll index. In cluster analysis seeds treatment with 5 mL kg−1 ANE was isolated from all doses. ANE presented a biostimulant effect on soybean seedlings, providing better growth and biomass characteristics, being promising in seeds treatment, but further studies are suggested in order to increase information regarding its use protocol for soybeans.

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Ascophyllum nodosum seaweed extract in Inga edulis seedlings under drought and the potential of phenotypic plasticity

Cited by 2 publications

References 53 publications

Foliar Application of Biostimulant Mitigates Water Stress Effects on Soybean

Foliar Application of Biostimulant Mitigates Water Stress Effects on Soybean

Impact of Ascophyllum nodosum extract in soybean seeds treatment and seedling vigor

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