e-journal

The folate precursor para-aminobenzoic acid elicits induced resistance against Cucumber mosaic virus and Xanthomonas axonopodis

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† Background and Aims:
The use of vitamins including vitamin B1, B2 and K3 for the induction of systemic acquired resistance (SAR) to protect crops against plant pathogens has been evaluated previously. The use of vitamins is beneficial because it is cost effective and safe for the environment. The use of folate precursors, including ortho-aminobenzoic acid, to induce SAR against a soft-rot pathogen in tobacco has been reported previously.

† Methods:
In the present study, para-aminobenzoic acid (PABA, also referred to as vitamin Bx) was selected owing to its effect on the induction of SAR against Xanthomonas axonopodis pv. vesicatoria in pepper plants
through greenhouse screening.

† Key Results:
Dipping of pepper seedlings in a 1 mM PABA solution in field trials induced SAR against artificially
infiltrated X. axonopodis pv. vesicatoria and naturally occurring cucumber mosaic virus. Expression of
the Capsicum annuum pathogenesis-related 4 gene was primed in response to pathogen infection as assessed
by quantitative real-time PCR. The accumulation of cucumber mosaic virus RNA was reduced in PABAtreated
pepper plants at 40 and 105 d post-treatment. Unexpectedly, fruit yield was increased in PABA-treated
plants, indicating that PABA-mediated SAR successfully protected pepper plants from infection by bacterial
and viral pathogens without significant fitness allocation costs.

†Conclusions:
The present study is the first to demonstrate the effective elicitation of SAR by a folate precursor under field conditions.

Key words: Systemic acquired resistance, defence priming, induced systemic resistance, plant growth-promoting
rhizobacteria, PGPR, folate, para-aminobenzoic acid, PABA, vitamin Bx.

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Informasi Detail

Judul Seri

Annals of Botany

No. Panggil

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Penerbit

Oxford : Oxford University Press on behalf of the Annals of Botany Company., 2013

Deskripsi Fisik

Annals of Botany 111: 925–934, 2013

Bahasa

English

ISBN/ISSN

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Klasifikasi

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Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

111: 2013

Subjek

EKOFISIOLOGI TANAMAN

Info Detail Spesifik

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Pernyataan Tanggungjawab

agus

Versi lain/terkait

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