Application of biostimulants in tomato subjected to water deficit: Physiological, enzymatic and production responses

Peripolli, Mariane; Dornelles, Sylvio Henrique Bidel; Lopes, Sidinei José; Tabaldi, Luciane Almeri; Trivisiol, Vinicius Severo; Rubert, Jaíne

doi:10.1590/1807-1929/agriambi.v25n2p90-95

Cited by 10 publications

(8 citation statements)

References 25 publications

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“…Thus, it can be inferred that the photosynthetic apparatus integrity was not compromised, as the plants had Fv/Fm values within the range of 0.75 -0.85. Low values indicate difficulty in fixing CO 2 in the leaf tissue, being an excellent indicator of plant stress (Peripolli et al, 2021). Thus, salinity can cause photoinhibitory damage to PSII reaction centers, as reported by Lima et al (2019) in their study, in which the increase in salinity by up to 9.1 dS m -1 reduced the quantum efficiency of the PSII of 'BRS Rubi' cotton.…”

Section: Resultsmentioning

confidence: 62%

H2O2 alleviates salt stress effects on photochemical efficiency and photosynthetic pigments of cotton genotypes

Veloso

Azevedo

Nobre

et al. 2023

Rev. bras. eng. agríc. ambient.

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The objective of this study was to evaluate the quantum yield and concentrations of photosynthetic pigments of naturally colored cotton genotypes under irrigation with waters of different electrical conductivities and foliar applications of hydrogen peroxide. The design used was randomized blocks in a 4 × 3 × 2 factorial arrangement, corresponding to four concentrations of hydrogen peroxide - H2O2 (0, 25, 50 and 75 μM), three genotypes of colored fiber cotton (‘BRS Rubi’, ‘BRS Topázio’ and ‘BRS Verde’) and two values of electrical conductivity of water (0.8 and 5.3 dS m-1), with three replicates. Irrigation with water of 5.3 dS m-1 reduces the chlorophyll a, chlorophyll b and total chlorophyll concentrations of ‘BRS Rubi’ cotton. The concentrations of photosynthetic pigments, maximum fluorescence, variable fluorescence and quantum efficiency of photosystem II of ‘BRS Rubi’ cotton increased under irrigation with 0.8 dS m-1 water and foliar application of 50 μM of hydrogen peroxide. Water of 5.3 dS m-1 and foliar applications of 75 μM of hydrogen peroxide reduce the concentrations of photosynthetic pigments, but did not cause damage to the efficiency of photosystem II of the colored cotton genotypes.

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Section: Resultsmentioning

confidence: 62%

H2O2 alleviates salt stress effects on photochemical efficiency and photosynthetic pigments of cotton genotypes

Veloso

Azevedo

Nobre

et al. 2023

Rev. bras. eng. agríc. ambient.

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“…Moreover, the application of ERANTHIS ®® reduced the affection of water stress on both chlorophyll and carotenoid leaf levels at the flowering time. Similarly, the use of other Ascophyllum nodosum-based biostimulant limits the damage, caused by water deficit, to the photosynthetic structures of tomato plants under water stress at the flowering time [60].…”

Section: Discussionmentioning

confidence: 99%

A Biostimulant Based on Seaweed (Ascophyllum nodosum and Laminaria digitata) and Yeast Extracts Mitigates Water Stress Effects on Tomato (Solanum lycopersicum L.)

et al. 2021

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Water deficit is one of the most problematic stressors worldwide. In this context, the use of biostimulants represents an increasingly ecological practice aimed to improve crop tolerance and mitigate the negative effects on the productivity. Here, the effect derived from the foliar application of ERANTHIS®, a biostimulant based on seaweed (Ascophyllum nodosum and Laminaria digitata) and yeast extracts, was tested on tomato plants grown under mild water-stress conditions. The potential stress mitigation action was evaluated by monitoring morphometric (fresh weight and dry matter content), physiological (stem water potential) and biochemical (ROS scavenger enzymes activity, proline, abscisic acid, hydrogen peroxide and photosynthetic pigment content) parameters closely related to the occurrence and response to stress at both flowering and fruit-set timing. In general, we observed that plants grown under drought conditions and treated with the biostimulant had a lower amount of ABA, and MDA and proline correlated to a lower activity of ROS scavenger enzymes compared to untreated plants. These data, together with the higher stem water potential and photosynthetic pigment levels recorded for the treated plants, suggest that ERANTHIS® may mitigate water stress effects on tomato.

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“…Significant differences in Fv/Fm were determined between the monitored variants of stimulants application (Table 2). Peripolli et al [45] report an increase in Fv/Fm and the electron transport rate after biostimulator application.…”

Section: Photosynthetic Pigmentsmentioning

confidence: 99%

“…(see Kaur et al [52]). After the stress subsides, the proline is broken down and can be used as an energy source for plant regeneration after stress [45].…”

Section: Proline Contentmentioning

confidence: 99%

The Effect of the Application of Stimulants on the Photosynthetic Apparatus and the Yield of Winter Wheat

et al. 2021

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The use of stimulation preparations seems to be a promising means for mitigating the effects of abiotic and biotic stressors. Their significance includes plant organism stimulation and metabolism optimisation, water regime, and nutrition during periods of stress. They help bridge it over and create conditions for rapid regeneration. In a field experiment, the effect of the application of stimulation preparations on cultivars Triticum aestivum L. with different genetic composition was evaluated (donor of blue aleurone colour KM-72-18; donor of a multi-row spike (MRS) KM-94-18). Our results show a predominantly positive effect of the application of stimulants on the yield and thousand-grain weight (TKW). The results obtained were influenced by the year, based on different temperatures and precipitation. Higher yields were achieved in 2020 with higher total precipitation during the grain filling period and with a higher maximum quantum yield of the photosystem II (Fv/Fm). In 2019, this period was significantly dry and warm, which was reflected in a lower yield and TKM, higher proline content in the leaves, and lower Fv/Fm values. In both experimental years, there was a higher yield of the cultivar with blue aleurone (KM-72-18). In the case of cultivars with coloured grains, the promising use of the content substances in cultivars as natural means of increasing resistance to abiotic and biotic stressors seems to be promising.

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Application of biostimulants in tomato subjected to water deficit: Physiological, enzymatic and production responses

Cited by 10 publications

References 25 publications

H2O2 alleviates salt stress effects on photochemical efficiency and photosynthetic pigments of cotton genotypes

H2O2 alleviates salt stress effects on photochemical efficiency and photosynthetic pigments of cotton genotypes

A Biostimulant Based on Seaweed (Ascophyllum nodosum and Laminaria digitata) and Yeast Extracts Mitigates Water Stress Effects on Tomato (Solanum lycopersicum L.)

The Effect of the Application of Stimulants on the Photosynthetic Apparatus and the Yield of Winter Wheat

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