Passion fruit plants treated with biostimulants induce defense-related and phytohormone-associated genes

Santos-Jiménez, José Leonardo; Montebianco, Caroline de Barros; Olivares, Fábio Lopes; Canellas, Luciano Pasqualoto; Barreto‐Bergter, Eliana; Rosa, Raul Castro Carriello; Vaslin, Maite F S

doi:10.1016/j.plgene.2022.100357

Cited by 8 publications

(4 citation statements)

References 47 publications

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“…The use of biostimulant substances has intensified in recent years due to the demand for agriculture with less environmental impact. Biostimulant substances can be defined as a technology that allows the plant to be able to overcome biotic or abiotic stresses that negatively impact productivity (SANTOS-JIMENEZ et al, 2022). Several biostimulant substances have shown promising results for the management of PFS.…”

Section: Resultsmentioning

confidence: 99%

“…Several biostimulant substances have shown promising results for the management of PFS. Humic acids, for example, may have an ef-fect on the activation of genes related to passion fruit defense, in addition to other substances such as fungal cell wall glycoproteins (galactomannan peptide -pGM) (SANTOS-JIMENEZ et al, 2022) and acibenzolar (WILLINGHAM et al, 2002), these specifically on PFS. The use of potassium phosphites, in turn, appears as an option, given its efficacy reported in the literature for scab and other passion fruit diseases (JUNQUEIRA et al, 2011) and the results obtained in the present study.…”

Section: Resultsmentioning

confidence: 99%

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Doses and intervals of application of potassium phosphite for the control of passion fruit scab

Bonfim,

Denez,

Innocenti

et al. 2023

Rev. Bras. Frutic.

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Passion fruit scab (PFS), which is caused by species of the fungal complex Cladosporium cladosporioides, occurs both in protected environments and in the field. In view of the importance of the passion fruit scab, this study aimed to evaluate the effect of different intervals and doses of potassium phosphite in the greenhouse and in the field on the incidence of the disease. To evaluate the best dose of potassium phosphite, three experiments were carried out, two in a greenhouse and one in the field. The best application interval was evaluated in another experiment in a greenhouse. The variables evaluated were the incidence of plants with PFS symptoms (%) and the incidence of defoliated plants (%) in all experiments. The harvested fruits were evaluated for their mass (g), diameter (cm), soluble solids, acidity and chlorophyll content. The present work allowed to conclude that the dose of 0.1% of potassium phosphite was the best to control the passion fruit scab in a greenhouse, the treatment with an interval of 28 days of application showed a lower incidence of scab in seedlings at 35 days after inoculation and that potassium phosphite did not interfere in the quality parameters of fruits and leaves of passion fruit evaluated.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Doses and intervals of application of potassium phosphite for the control of passion fruit scab

Bonfim,

Denez,

Innocenti

et al. 2023

Rev. Bras. Frutic.

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“…cyclase) enzymes [29]. It was previously reported that plants treated with HS showed high linolenic acid levels combined with the boosting of LOX activity [30,31].…”

Section: Humic Acids Characteristicsmentioning

confidence: 97%

“…Moreover, 12-oxo-phytodienoic acid (12-OPDA) is synthesized in the sequence channelled by AOS (alene oxide synthase) and AOC (alene oxide cyclase) enzymes [29]. It was previously reported that plants treated with HS showed high linolenic acid levels combined with the boosting of LOX activity [30,31].…”

Section: Introductionmentioning

confidence: 99%

Humic Substances Isolated from Recycled Biomass Trigger Jasmonic Acid Biosynthesis and Signalling

Silva,

Peres,

Peres

et al. 2023

Plants

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Intensive agriculture maintains high crop yields through chemical inputs, which are well known for their adverse effects on environmental quality and human health. Innovative technologies are required to reduce the risk generated by the extensive and harmful use of pesticides. The plant biostimulants made from humic substances isolated from recyclable biomass offer an alternative approach to address the need for replacing conventional agrochemicals without compromising the crop yield. The stimulatory effects of humic substances are commonly associated with plant hormones, particularly auxins. However, jasmonic acid (JA) is crucial metabolite in mediating the defence responses and governing plant growth and development. This work aimed to evaluate the changes in the biosynthesis and signalling pathway of JA in tomato seedlings treated with humic acids (HA) isolated from vermicompost. We use the tomato model system cultivar Micro-Tom (MT) harbouring a reporter gene fused to a synthetic promoter that responds to jasmonic acid (JERE::GUS). The transcript levels of genes involved in JA generation and activity were also determined using qRT-PCR. The application of HA promoted plant growth and altered the JA status, as revealed by both GUS and qRT-PCR assays. Both JA enzymatic synthesis (LOX, OPR3) and JA signalling genes (JAZ and JAR) were found in higher transcription levels in plants treated with HA. In addition, ethylene (ETR4) and auxin (ARF6) signalling components were positively modulated by HA, revealing a hormonal cross-talk. Our results prove that the plant defence system linked to JA can be emulated by HA application without growth inhibition.

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Influence of polyethylene microplastics on Brassica rapa: Toxicity mechanism investigation

Wu,

He,

Chen

et al. 2024

Emerging Contaminants

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Passion fruit plants treated with biostimulants induce defense-related and phytohormone-associated genes

Cited by 8 publications

References 47 publications

Doses and intervals of application of potassium phosphite for the control of passion fruit scab

Doses and intervals of application of potassium phosphite for the control of passion fruit scab

Humic Substances Isolated from Recycled Biomass Trigger Jasmonic Acid Biosynthesis and Signalling

Influence of polyethylene microplastics on Brassica rapa: Toxicity mechanism investigation

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