The elicitor AsES stimulates ethylene synthesis, induce ripening and enhance protection against disease naturally produced in avocado fruit

Perato, Silvia Marisa; Martínez‐Zamora, Martin Gustavo; Salazar, Sergio Miguel; Ricci, Juan C. Díaz

doi:10.1016/j.scienta.2018.06.030

Cited by 13 publications

(6 citation statements)

References 29 publications

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“…AsES elicitor does not necessarily fit the concept of a PAMP/effector since it shows features of both classes of molecules. As a PAMP, it acts ubiquitously, triggering a defence response not only in different F. ananassa cultivars, namely Milsei, Tudla, Camarosa and Pájaro (Chalfoun, ; Chalfoun et al ., ), but also in different wild species of strawberry, such as Fragaria vesca (unpublished data), and this defence response is extended to other plant species, such as A. thaliana (Chalfoun et al ., ; Hael‐Conrad et al ., ) and crops such as soybean, sugarcane and avocado (Chalfoun et al ., ,b; Perato et al ., ). Interestingly, AsES treatment protects against both bacterial and fungal pathogens (Chalfoun et al ., ) and among these, against fungi with different lifestyles (Chalfoun et al ., , ,b; Hael‐Conrad et al ., ).…”

Section: Discussionmentioning

confidence: 97%

The fungal subtilase AsES elicits a PTI‐like defence response in Arabidopsis thaliana plants independently of its enzymatic activity

Pilar

Holton

Conti

et al. 2019

Molecular Plant Pathology

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Summary Acremonium strictum elicitor subtilisin (AsES) is a 34‐kDa serine‐protease secreted by the strawberry fungal pathogen A. strictum. On AsES perception, a set of defence reactions is induced, both locally and systemically, in a wide variety of plant species and against pathogens of alternative lifestyles. However, it is not clear whether AsES proteolytic activity is required for triggering a defence response or if the protein itself acts as an elicitor. To investigate the necessity of the protease activity to activate the defence response, AsES coding sequences of the wild‐type gene and a mutant on the active site (S226A) were cloned and expressed in Escherichia coli. Our data show that pretreatment of Arabidopsis plants with inactive proteins, i.e. inhibited with phenylmethylsulphonyl fluoride (PMSF) and mutant, resulted in an increased systemic resistance to Botrytis cinerea and expression of defence‐related genes in a temporal manner that mimics the effect already reported for the native AsES protein. The data presented in this study indicate that the defence‐eliciting property exhibited by AsES is not associated with its proteolytic activity. Moreover, the enhanced expression of some immune marker genes, seedling growth inhibition and the involvement of the co‐receptor BAK1 observed in plants treated with AsES suggests that AsES is being recognized as a pathogen‐associated molecular pattern by a leucine‐rich repeat receptor. The understanding of the mechanism of action of AsES will contribute to the development of new breeding strategies to confer durable resistance in plants.

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Section: Discussionmentioning

confidence: 97%

The fungal subtilase AsES elicits a PTI‐like defence response in Arabidopsis thaliana plants independently of its enzymatic activity

Pilar

Holton

Conti

et al. 2019

Molecular Plant Pathology

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“…AsES is a 34-kDa serine-protease elicitor secreted by the avirulent isolate SS71 of the opportunist strawberry fungal pathogen Acremonium strictum (Chalfoun et al 2013). After perception, it induces a set of local and systemic defence reactions in a wide variety of plant species and against pathogens of alternative lifestyles (Hael Conrad et al 2015Perato et al 2018;Caro et al 2020).…”

Section: Introductionmentioning

confidence: 99%

Fungal-derived extracts induce resistance against Botrytis cinerea in Arabidopsis thaliana

et al. 2020

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“…Otra alternativa a la refrigeración y comúnmente usada en México son los absorbentes de etileno, como el permanganato de potasio (KMnO4). Por ser el aguacate un fruto climatérico, la producción de etileno se incrementa en el almacenamiento, por lo que en cada caja del lote (700-1 100 cajas de 11 kg) se incluye una bolsita de KMnO4, que es relativamente económico (<USD $0.25 por bolsita) (Kant, 2018;Perato et al, 2018). Sin embargo, tanto la refrigeración como las atmósferas controladas reducen procesos fisiológicos del fruto, pero no la presencia de patógenos (Figura 3).…”

Section: Tecnología Durante El Almacenamientounclassified

Situación actual del manejo poscosecha y de enfermedades fungosas del aguacate ‘Hass’ para exportación en Michoacán

González

Baños

García

et al. 2020

Remexca

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México es el principal productor y exportador mundial de aguacate ‘Hass’. Por sus características nutricionales en la salud humana, el aguacate ‘Hass’ ha ganado gran popularidad alrededor del mundo. El objetivo de esta revisión fue conocer el estado actual del manejo de la cosecha y poscosecha del aguacate, así como, revisar el proceso de infección de los hongos Colletotrichum spp. y Lasiodiplodia theobromae, causantes de las enfermedades llamadas antracnosis y pudrición peduncular, respectivamente. Estas patologías se manifiestan durante la maduración poscosecha y almacenamiento. Actualmente, el principal medio de control de estos microorganismos es un complejo de los fungicidas azoxystrobin + fludioxonil, cuya aplicación se permite sólo para exportaciones a Estados Unidos de América. En México, sólo el estado de Michoacán puede exportar aguacate a los Estados Unidos de América, pero se busca aumentar las exportaciones hacia otros mercados internacionales e integrar otras regiones productoras, por lo que es necesario buscar alternativas de control de enfermedades en poscosecha. Mediante el conocimiento de los mecanismos intrínsecos de protección del fruto se podrían sentar las bases para desarrollar y evaluar nuevos modelos de control.

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The elicitor AsES stimulates ethylene synthesis, induce ripening and enhance protection against disease naturally produced in avocado fruit

Cited by 13 publications

References 29 publications

The fungal subtilase AsES elicits a PTI‐like defence response in Arabidopsis thaliana plants independently of its enzymatic activity

The fungal subtilase AsES elicits a PTI‐like defence response in Arabidopsis thaliana plants independently of its enzymatic activity

Fungal-derived extracts induce resistance against Botrytis cinerea in Arabidopsis thaliana

Situación actual del manejo poscosecha y de enfermedades fungosas del aguacate ‘Hass’ para exportación en Michoacán

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