Novel Elicitors Induce Defense Responses in Cut Flowers

Darras, Anastasios I.

doi:10.5772/30180

Cited by 3 publications

(1 citation statement)

References 153 publications

(173 reference statements)

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“…It can induce plant defense genes and activate their mechanisms against biotic and abiotic stresses. Application of MeJA seems to improve the plant defense system against physical injury (e.g., by producing antidigestive proteins against insects) (Darras, 2012), wound healing (Srivastava, 2002;Guiné, et al, 2010), and also microbial pathogens like Botrytis cinerea (Meir, et al, 2003). Additionally, it stimulates defense mechanisms against osmotic stress and ameliorates abiotic stress, such as the deleterious effects of ozone on plant tissues (Srivastava, 2002).…”

Section: Introductionmentioning

confidence: 99%

Improving quality indices of Rosa �Yellow Finesse� using methyl jasmonate and benzyl adenine

Askari‐Khorasgani¹,

Mortazaeinezhad²

2016

JCEA

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Plant growth regulators (PGRs) play a key role in regulating physiological and morphological development of plant species. Application of these PGRs can improve pre-and post-harvest quality and quantity of ornamental flowers and lessen the harmful effects of injury incurred at harvesting time. The objective of this study was to determine the appropriate spraying solution for improving pre-and postharvest quality indices of Rosa hybrida L. cv. 'Yellow Finesse'. So, the effect of methyl jasmonate (MeJA) at 0, 50, 100, or 150 mg*l-1 alone or in combination with benzyl adenine (BA) at 0, 10, or 20 mg*l-1 was investigated. Plants were sprayed at a 15-day interval for two months and then harvested at a mature bud stage. The results showed that flower head diameter and leaf chlorophyll content were improved by applying 100 mg*l-1 MeJA + 20 mg*l-1 BA. The application of 100 mg*l-1 MeJA + 10 mg*l-1 BA or 10 mg*l-1 BA resulted in improving its petal carotenoid content. The plants treated with 150 mg*l-1 MeJA had the longest shelf life. The findings demonstrated that while 100 mg*l-1 MeJA + 20 mg*l-1 BA and 100 mg*l-1 MeJA + 10 mg*l-1 BA were the best preharvest spraying solutions due to the highest carotenoid content and largest flower head diameter. Particularly, 150 mg*l-1 MeJA was the best spraying solution for extending cut flower shelf life and had the potential to function as a postharvest treatment.

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Section: Introductionmentioning

confidence: 99%

Improving quality indices of Rosa �Yellow Finesse� using methyl jasmonate and benzyl adenine

Askari‐Khorasgani¹,

Mortazaeinezhad²

2016

JCEA

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Photophysical, electrochemical, and spectroelectrochemical investigation of electronicpush–pullbenzothiadiazole fluorophores

Wałęsa‐Chorab

Tremblay

Ettaoussi

et al. 2015

Pure and Applied Chemistry

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Two electronic push-pull fluorophores consisting of a benzothiadiazole core and a terminal N,N-dimethylamino electron donating group were prepared. The effect of the terminal electron withdrawing group (-NO 2 and -CN) on the spectroscopic, electrochemical, and spectroelectrochemical properties were examined. The fluorophores were solvatochromic with Stokes shifts upward of 9000 cm −1 being observed in aprotic solvents of varying polarity. It was found that the fluorophores fluoresced appreciably (86 % > Φ fl > 18 %) in hexane, toluene, diethyl ether, dichloromethane, ethyl acetate, and THF. The fluorescence was quenched in acetonitrile, acetone, and DMSO. The fluorophores also fluoresced appreciably in thin films when embedded in poly(methyl methacrylate) and poly(dimethylsiloxane) matrices. Protonating the terminal amine with trifluoroacetic acid quenched the intramolecular charge transfer band, although the fluorophores remained fluorescent. The fluorophores could also be reversibly oxidized electrochemically. The resulting oxidized state was visually different than the neutral form. Electrochemical oxidation also led to reversible changes in both the fluorescence wavelength and intensity.

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Review: implementing plant biostimulants and biocontrol strategies in the agroecological management of cultivated ecosystems

Mire¹,

Nguyen²,

Fassotte³

et al. 2016

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Introduction. In the context of sustainable agricultural production, agroecology aims at optimizing the economic and environmental performances of beneficial ecosystem services in order to (i) increase the productivity and resilience of cultivated ecosystems and (ii) preserve their natural resources. The maintenance of such performances is supported by research via the development of new tools that enhance plant tolerance to numerous biotic and abiotic stresses. Literature. Biostimulants can be used as a tool to complement the use of chemical inputs, by involving non-living-based products, or living-based products containing beneficial rhizosphere microbiome, such as plant growth-promoting rhizobacteria (PGPR). Pest management research has also made major advances in the development of efficient biocontrol methods. Elicitors and semiochemicals are considered to be some of the most promising tools for inducing plant resistance to various diseases and enhancing natural predation, respectively. Several products are already on the market. This review discusses current methods for exploiting and applying biostimulant and biocontrol products in contemporary agricultural systems. Future applications of these tools for sustainable management of cultivated ecosystems are also discussed. Conclusions. These tools are still difficult to use because of their lack of reliability in the field and their uneasy integration in the cropping systems. Further studies are needed to better understand the parameters influencing the efficiency of PGPR, elicitors and semiochemicals. Special attention needs to be given to the formulation and the interactions of these products with plant physiology and the environment.

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Novel Elicitors Induce Defense Responses in Cut Flowers

Cited by 3 publications

References 153 publications

Improving quality indices of Rosa �Yellow Finesse� using methyl jasmonate and benzyl adenine

Improving quality indices of Rosa �Yellow Finesse� using methyl jasmonate and benzyl adenine

Photophysical, electrochemical, and spectroelectrochemical investigation of electronicpush–pullbenzothiadiazole fluorophores

Review: implementing plant biostimulants and biocontrol strategies in the agroecological management of cultivated ecosystems

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