Fusicoccin activates pathogen-responsive gene expression independently of common resistance signalling pathways, but increases disease symptoms in Pseudomonas syringae-infected tomato plants.

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Defence response Fusicoccin Tomato Pathogenesis-Related gene Signalling

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Fusicoccin activates pathogen-responsive gene expression independently of common resistance signalling pathways, but increases disease symptoms in Pseudomonas syringae-infected tomato plants. / Singh, Jasber; Roberts, Michael R.
In: Planta, Vol. 219, No. 2, 10.03.2004, p. 261-269.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

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@article{626b8e3f7066412f9b7e93d447feaecd,

title = "Fusicoccin activates pathogen-responsive gene expression independently of common resistance signalling pathways, but increases disease symptoms in Pseudomonas syringae-infected tomato plants.",

abstract = "Abstract Fusicoccin (FC), an activator of the plant plasma membrane H+-ATPase, induces several components of plant pathogen resistance responses, including defence hormone biosynthesis and pathogenesis-related (PR) gene expression. The mechanism by which these responses occur, and the effect they have on plant{\^a}��pathogen interactions is unknown. Here, we show that PR gene expression in response to FC in tomato (Lycopersicon esculentum Mill.) plants does not strictly require the common defence hormones, salicylic acid, jasmonic acid and ethylene. We also show that FC-induced PR gene expression requires neither Ca2+ nor reactive oxygen species, typical early pathogen-resistance response signals. The possibility that PR gene expression is related to FC-induced dehydration stress is also discounted. Finally, we show that the defence responses elicited by FC in tomato are not sufficient to confer resistance to the bacterial pathogen Pseudomonas syringae. Rather, FC increases the rate and severity of disease symptom formation in an ethylene-dependent manner.",

keywords = "Defence response Fusicoccin Tomato Pathogenesis-Related gene Signalling",

author = "Jasber Singh and Roberts, {Michael R}",

note = "The definitive versoin of this article is published in the journal, Planta. The original publication is available at www.springerlink.com",

year = "2004",

month = mar,

day = "10",

doi = "10.1007/s00425-004-1234-5",

language = "English",

volume = "219",

pages = "261--269",

journal = "Planta",

issn = "0032-0935",

publisher = "Springer",

number = "2",

}

RIS

TY - JOUR

T1 - Fusicoccin activates pathogen-responsive gene expression independently of common resistance signalling pathways, but increases disease symptoms in Pseudomonas syringae-infected tomato plants.

AU - Singh, Jasber

AU - Roberts, Michael R

N1 - The definitive versoin of this article is published in the journal, Planta. The original publication is available at www.springerlink.com

PY - 2004/3/10

Y1 - 2004/3/10

N2 - Abstract Fusicoccin (FC), an activator of the plant plasma membrane H+-ATPase, induces several components of plant pathogen resistance responses, including defence hormone biosynthesis and pathogenesis-related (PR) gene expression. The mechanism by which these responses occur, and the effect they have on plantâ��pathogen interactions is unknown. Here, we show that PR gene expression in response to FC in tomato (Lycopersicon esculentum Mill.) plants does not strictly require the common defence hormones, salicylic acid, jasmonic acid and ethylene. We also show that FC-induced PR gene expression requires neither Ca2+ nor reactive oxygen species, typical early pathogen-resistance response signals. The possibility that PR gene expression is related to FC-induced dehydration stress is also discounted. Finally, we show that the defence responses elicited by FC in tomato are not sufficient to confer resistance to the bacterial pathogen Pseudomonas syringae. Rather, FC increases the rate and severity of disease symptom formation in an ethylene-dependent manner.

AB - Abstract Fusicoccin (FC), an activator of the plant plasma membrane H+-ATPase, induces several components of plant pathogen resistance responses, including defence hormone biosynthesis and pathogenesis-related (PR) gene expression. The mechanism by which these responses occur, and the effect they have on plantâ��pathogen interactions is unknown. Here, we show that PR gene expression in response to FC in tomato (Lycopersicon esculentum Mill.) plants does not strictly require the common defence hormones, salicylic acid, jasmonic acid and ethylene. We also show that FC-induced PR gene expression requires neither Ca2+ nor reactive oxygen species, typical early pathogen-resistance response signals. The possibility that PR gene expression is related to FC-induced dehydration stress is also discounted. Finally, we show that the defence responses elicited by FC in tomato are not sufficient to confer resistance to the bacterial pathogen Pseudomonas syringae. Rather, FC increases the rate and severity of disease symptom formation in an ethylene-dependent manner.

KW - Defence response Fusicoccin Tomato Pathogenesis-Related gene Signalling

U2 - 10.1007/s00425-004-1234-5

DO - 10.1007/s00425-004-1234-5

M3 - Journal article

VL - 219

SP - 261

EP - 269

JO - Planta

JF - Planta

SN - 0032-0935

IS - 2

ER -

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