β-aminobutyric acid protects Brassica napus plants from infection by Leptosphaeria maculans. Resistance induction or a direct antifungal effect?

Šašek, Vladimír; Nováková, Miroslava; Dobrev, Petre I.; Valentová, Olga; Burketová, Lenka

doi:10.1007/s10658-011-9897-9

Cited by 42 publications

(24 citation statements)

References 40 publications

(53 reference statements)

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“…Recently, however, Šašek et al (2012) found BABA had direct antifungal activity against Leptosphaeria maculans and the effect was comparable with the fungicide tebuconazole [30]. Our study showed that both BABA and GABA had direct toxicity to S. avenae when added to artificial diet.…”

Section: Discussioncontrasting

confidence: 44%

Deciphering the Mechanism of β-Aminobutyric Acid-Induced Resistance in Wheat to the Grain Aphid, Sitobion avenae

et al. 2014

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The non-protein amino acid β-aminobutyric acid (BABA) can induce plant resistance to a broad spectrum of biotic and abiotic stresses. However, BABA-induced plant resistance to insects is less well-studied, especially its underlying mechanism. In this research, we applied BABA to wheat seedlings and tested its effects on Sitobion avenae (F.). When applied as a soil drench, BABA significantly reduced weights of S. avenae, whereas foliar spray and seed treatment had no such effects. BABA-mediated suppression of S. avenae growth was dose dependent and lasted at least for 7 days. The aminobutyric acid concentration in phloem sap of BABA-treated plants was higher and increased with BABA concentrations applied. Moreover, after 10 days of treatment, the aminobutyric acid content in BABA-treated plants was still higher than that in control treatment. Sitobion avenae could not discriminate artificial diet containing BABA from standard diet, indicating that BABA itself is not a deterrent to this aphid. Also S. avenae did not show preference for control plants or BABA-treated plants. Consistent with choice test results, S. avenae had similar feeding activities on control and BABA-treated plants, suggesting that BABA did not induce antifeedants in wheat seedlings. In addition, aminobutyric acid concentration in S. avenae feeding on BABA-treated plants was significantly higher than those feeding on control plants. Sitobion avenae growth rate was reduced on the artificial diet containing BABA, indicating that BABA had direct toxic effects on this aphid species. These results suggest that BABA application reduced S. avenae performance on wheat seedlings and the mechanism is possibly due to direct toxicity of high BABA contents in plant phloem.

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Section: Discussioncontrasting

confidence: 44%

Deciphering the Mechanism of β-Aminobutyric Acid-Induced Resistance in Wheat to the Grain Aphid, Sitobion avenae

et al. 2014

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“…This could be attributed to a lower sporulation rate of the pathogen. BABA has a direct toxic effect on some pathogens such as Leptosphaeria maculans [89], but not towards P. infestans [66]. Tobacco, tomato, and pepper plants express SAR signals and induce PR1a, chitinase and glucanase expression after BABA application [52,54].…”

Section: Plant Resistance Inducers (Pris) In Solanaceae Speciesmentioning

confidence: 99%

Plant Resistance Inducers against Pathogens in Solanaceae Species—From Molecular Mechanisms to Field Application

Alexandersson

Mulugeta

Lankinen

et al. 2016

IJMS

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This review provides a current summary of plant resistance inducers (PRIs) that have been successfully used in the Solanaceae plant family to protect against pathogens by activating the plant’s own defence. Solanaceous species include many important crops such as potato and tomato. We also present findings regarding the molecular processes after application of PRIs, even if the number of such studies still remains limited in this plant family. In general, there is a lack of patterns regarding the efficiency of induced resistance (IR) both between and within solanaceous species. In many cases, a hypersensitivity-like reaction needs to form in order for the PRI to be efficient. “-Omics” studies have already given insight in the complexity of responses, and can explain some of the differences seen in efficacy of PRIs between and within species as well as towards different pathogens. Finally, examples of field applications of PRIs for solanaceous crops are presented and discussed. We predict that PRIs will play a role in future plant protection strategies in Solanaceae crops if they are combined with other means of disease control in different spatial and temporal combinations.

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“…One of the most economically important diseases of Brassica, especially oilseed rape, is Blackleg disease or Phoma stem canker, which is induced by the L. maculans species complex (Howlett et al, 2001;Humpherson-Jones, 1985;Šašek et al, 2011). The disease is present worldwide, being more severe in countries with high summer temperatures.…”

Section: Economically Important Pests and Pathogens Of Brassica Speciesmentioning

confidence: 99%

Beneficial endophytic microorganisms of Brassica – A review

et al. 2015

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β-aminobutyric acid protects Brassica napus plants from infection by Leptosphaeria maculans. Resistance induction or a direct antifungal effect?

Cited by 42 publications

References 40 publications

Deciphering the Mechanism of β-Aminobutyric Acid-Induced Resistance in Wheat to the Grain Aphid, Sitobion avenae

Deciphering the Mechanism of β-Aminobutyric Acid-Induced Resistance in Wheat to the Grain Aphid, Sitobion avenae

Plant Resistance Inducers against Pathogens in Solanaceae Species—From Molecular Mechanisms to Field Application

Beneficial endophytic microorganisms of Brassica – A review

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